File: | projects/openmp/runtime/src/kmp_tasking.cpp |
Warning: | line 826, column 36 Dereference of null pointer |
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1 | /* | |||
2 | * kmp_tasking.cpp -- OpenMP 3.0 tasking support. | |||
3 | */ | |||
4 | ||||
5 | //===----------------------------------------------------------------------===// | |||
6 | // | |||
7 | // The LLVM Compiler Infrastructure | |||
8 | // | |||
9 | // This file is dual licensed under the MIT and the University of Illinois Open | |||
10 | // Source Licenses. See LICENSE.txt for details. | |||
11 | // | |||
12 | //===----------------------------------------------------------------------===// | |||
13 | ||||
14 | #include "kmp.h" | |||
15 | #include "kmp_i18n.h" | |||
16 | #include "kmp_itt.h" | |||
17 | #include "kmp_stats.h" | |||
18 | #include "kmp_wait_release.h" | |||
19 | #include "kmp_taskdeps.h" | |||
20 | ||||
21 | #if OMPT_SUPPORT1 | |||
22 | #include "ompt-specific.h" | |||
23 | #endif | |||
24 | ||||
25 | #include "tsan_annotations.h" | |||
26 | ||||
27 | /* forward declaration */ | |||
28 | static void __kmp_enable_tasking(kmp_task_team_t *task_team, | |||
29 | kmp_info_t *this_thr); | |||
30 | static void __kmp_alloc_task_deque(kmp_info_t *thread, | |||
31 | kmp_thread_data_t *thread_data); | |||
32 | static int __kmp_realloc_task_threads_data(kmp_info_t *thread, | |||
33 | kmp_task_team_t *task_team); | |||
34 | ||||
35 | #ifdef OMP_45_ENABLED(50 >= 45) | |||
36 | static void __kmp_bottom_half_finish_proxy(kmp_int32 gtid, kmp_task_t *ptask); | |||
37 | #endif | |||
38 | ||||
39 | #ifdef BUILD_TIED_TASK_STACK | |||
40 | ||||
41 | // __kmp_trace_task_stack: print the tied tasks from the task stack in order | |||
42 | // from top do bottom | |||
43 | // | |||
44 | // gtid: global thread identifier for thread containing stack | |||
45 | // thread_data: thread data for task team thread containing stack | |||
46 | // threshold: value above which the trace statement triggers | |||
47 | // location: string identifying call site of this function (for trace) | |||
48 | static void __kmp_trace_task_stack(kmp_int32 gtid, | |||
49 | kmp_thread_data_t *thread_data, | |||
50 | int threshold, char *location) { | |||
51 | kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks; | |||
52 | kmp_taskdata_t **stack_top = task_stack->ts_top; | |||
53 | kmp_int32 entries = task_stack->ts_entries; | |||
54 | kmp_taskdata_t *tied_task; | |||
55 | ||||
56 | KA_TRACE(if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(start): location = %s, gtid = %d, entries = %d, " "first_block = %p, stack_top = %p \n", location, gtid, entries , task_stack->ts_first_block, stack_top); } | |||
57 | threshold,if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(start): location = %s, gtid = %d, entries = %d, " "first_block = %p, stack_top = %p \n", location, gtid, entries , task_stack->ts_first_block, stack_top); } | |||
58 | ("__kmp_trace_task_stack(start): location = %s, gtid = %d, entries = %d, "if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(start): location = %s, gtid = %d, entries = %d, " "first_block = %p, stack_top = %p \n", location, gtid, entries , task_stack->ts_first_block, stack_top); } | |||
59 | "first_block = %p, stack_top = %p \n",if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(start): location = %s, gtid = %d, entries = %d, " "first_block = %p, stack_top = %p \n", location, gtid, entries , task_stack->ts_first_block, stack_top); } | |||
60 | location, gtid, entries, task_stack->ts_first_block, stack_top))if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(start): location = %s, gtid = %d, entries = %d, " "first_block = %p, stack_top = %p \n", location, gtid, entries , task_stack->ts_first_block, stack_top); }; | |||
61 | ||||
62 | KMP_DEBUG_ASSERT(stack_top != NULL)if (!(stack_top != __null)) { __kmp_debug_assert("stack_top != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 62); }; | |||
63 | KMP_DEBUG_ASSERT(entries > 0)if (!(entries > 0)) { __kmp_debug_assert("entries > 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 63); }; | |||
64 | ||||
65 | while (entries != 0) { | |||
66 | KMP_DEBUG_ASSERT(stack_top != &task_stack->ts_first_block.sb_block[0])if (!(stack_top != &task_stack->ts_first_block.sb_block [0])) { __kmp_debug_assert("stack_top != &task_stack->ts_first_block.sb_block[0]" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 66); }; | |||
67 | // fix up ts_top if we need to pop from previous block | |||
68 | if (entries & TASK_STACK_INDEX_MASK == 0) { | |||
69 | kmp_stack_block_t *stack_block = (kmp_stack_block_t *)(stack_top); | |||
70 | ||||
71 | stack_block = stack_block->sb_prev; | |||
72 | stack_top = &stack_block->sb_block[TASK_STACK_BLOCK_SIZE]; | |||
73 | } | |||
74 | ||||
75 | // finish bookkeeping | |||
76 | stack_top--; | |||
77 | entries--; | |||
78 | ||||
79 | tied_task = *stack_top; | |||
80 | ||||
81 | KMP_DEBUG_ASSERT(tied_task != NULL)if (!(tied_task != __null)) { __kmp_debug_assert("tied_task != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 81); }; | |||
82 | KMP_DEBUG_ASSERT(tied_task->td_flags.tasktype == TASK_TIED)if (!(tied_task->td_flags.tasktype == 1)) { __kmp_debug_assert ("tied_task->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 82); }; | |||
83 | ||||
84 | KA_TRACE(threshold,if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(%s): gtid=%d, entry=%d, " "stack_top=%p, tied_task=%p\n", location, gtid, entries, stack_top , tied_task); } | |||
85 | ("__kmp_trace_task_stack(%s): gtid=%d, entry=%d, "if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(%s): gtid=%d, entry=%d, " "stack_top=%p, tied_task=%p\n", location, gtid, entries, stack_top , tied_task); } | |||
86 | "stack_top=%p, tied_task=%p\n",if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(%s): gtid=%d, entry=%d, " "stack_top=%p, tied_task=%p\n", location, gtid, entries, stack_top , tied_task); } | |||
87 | location, gtid, entries, stack_top, tied_task))if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(%s): gtid=%d, entry=%d, " "stack_top=%p, tied_task=%p\n", location, gtid, entries, stack_top , tied_task); }; | |||
88 | } | |||
89 | KMP_DEBUG_ASSERT(stack_top == &task_stack->ts_first_block.sb_block[0])if (!(stack_top == &task_stack->ts_first_block.sb_block [0])) { __kmp_debug_assert("stack_top == &task_stack->ts_first_block.sb_block[0]" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 89); }; | |||
90 | ||||
91 | KA_TRACE(threshold,if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(exit): location = %s, gtid = %d\n" , location, gtid); } | |||
92 | ("__kmp_trace_task_stack(exit): location = %s, gtid = %d\n",if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(exit): location = %s, gtid = %d\n" , location, gtid); } | |||
93 | location, gtid))if (kmp_a_debug >= threshold) { __kmp_debug_printf ("__kmp_trace_task_stack(exit): location = %s, gtid = %d\n" , location, gtid); }; | |||
94 | } | |||
95 | ||||
96 | // __kmp_init_task_stack: initialize the task stack for the first time | |||
97 | // after a thread_data structure is created. | |||
98 | // It should not be necessary to do this again (assuming the stack works). | |||
99 | // | |||
100 | // gtid: global thread identifier of calling thread | |||
101 | // thread_data: thread data for task team thread containing stack | |||
102 | static void __kmp_init_task_stack(kmp_int32 gtid, | |||
103 | kmp_thread_data_t *thread_data) { | |||
104 | kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks; | |||
105 | kmp_stack_block_t *first_block; | |||
106 | ||||
107 | // set up the first block of the stack | |||
108 | first_block = &task_stack->ts_first_block; | |||
109 | task_stack->ts_top = (kmp_taskdata_t **)first_block; | |||
110 | memset((void *)first_block, '\0', | |||
111 | TASK_STACK_BLOCK_SIZE * sizeof(kmp_taskdata_t *)); | |||
112 | ||||
113 | // initialize the stack to be empty | |||
114 | task_stack->ts_entries = TASK_STACK_EMPTY; | |||
115 | first_block->sb_next = NULL__null; | |||
116 | first_block->sb_prev = NULL__null; | |||
117 | } | |||
118 | ||||
119 | // __kmp_free_task_stack: free the task stack when thread_data is destroyed. | |||
120 | // | |||
121 | // gtid: global thread identifier for calling thread | |||
122 | // thread_data: thread info for thread containing stack | |||
123 | static void __kmp_free_task_stack(kmp_int32 gtid, | |||
124 | kmp_thread_data_t *thread_data) { | |||
125 | kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks; | |||
126 | kmp_stack_block_t *stack_block = &task_stack->ts_first_block; | |||
127 | ||||
128 | KMP_DEBUG_ASSERT(task_stack->ts_entries == TASK_STACK_EMPTY)if (!(task_stack->ts_entries == TASK_STACK_EMPTY)) { __kmp_debug_assert ("task_stack->ts_entries == TASK_STACK_EMPTY", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 128); }; | |||
129 | // free from the second block of the stack | |||
130 | while (stack_block != NULL__null) { | |||
131 | kmp_stack_block_t *next_block = (stack_block) ? stack_block->sb_next : NULL__null; | |||
132 | ||||
133 | stack_block->sb_next = NULL__null; | |||
134 | stack_block->sb_prev = NULL__null; | |||
135 | if (stack_block != &task_stack->ts_first_block) { | |||
136 | __kmp_thread_free(thread,___kmp_thread_free((thread), (stack_block), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 137) | |||
137 | stack_block)___kmp_thread_free((thread), (stack_block), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 137); // free the block, if not the first | |||
138 | } | |||
139 | stack_block = next_block; | |||
140 | } | |||
141 | // initialize the stack to be empty | |||
142 | task_stack->ts_entries = 0; | |||
143 | task_stack->ts_top = NULL__null; | |||
144 | } | |||
145 | ||||
146 | // __kmp_push_task_stack: Push the tied task onto the task stack. | |||
147 | // Grow the stack if necessary by allocating another block. | |||
148 | // | |||
149 | // gtid: global thread identifier for calling thread | |||
150 | // thread: thread info for thread containing stack | |||
151 | // tied_task: the task to push on the stack | |||
152 | static void __kmp_push_task_stack(kmp_int32 gtid, kmp_info_t *thread, | |||
153 | kmp_taskdata_t *tied_task) { | |||
154 | // GEH - need to consider what to do if tt_threads_data not allocated yet | |||
155 | kmp_thread_data_t *thread_data = | |||
156 | &thread->th.th_task_team->tt.tt_threads_data[__kmp_tid_from_gtid(gtid)]; | |||
157 | kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks; | |||
158 | ||||
159 | if (tied_task->td_flags.team_serial || tied_task->td_flags.tasking_ser) { | |||
160 | return; // Don't push anything on stack if team or team tasks are serialized | |||
161 | } | |||
162 | ||||
163 | KMP_DEBUG_ASSERT(tied_task->td_flags.tasktype == TASK_TIED)if (!(tied_task->td_flags.tasktype == 1)) { __kmp_debug_assert ("tied_task->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 163); }; | |||
164 | KMP_DEBUG_ASSERT(task_stack->ts_top != NULL)if (!(task_stack->ts_top != __null)) { __kmp_debug_assert( "task_stack->ts_top != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 164); }; | |||
165 | ||||
166 | KA_TRACE(20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task_stack(enter): GTID: %d; THREAD: %p; TASK: %p\n" , gtid, thread, tied_task); } | |||
167 | ("__kmp_push_task_stack(enter): GTID: %d; THREAD: %p; TASK: %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task_stack(enter): GTID: %d; THREAD: %p; TASK: %p\n" , gtid, thread, tied_task); } | |||
168 | gtid, thread, tied_task))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task_stack(enter): GTID: %d; THREAD: %p; TASK: %p\n" , gtid, thread, tied_task); }; | |||
169 | // Store entry | |||
170 | *(task_stack->ts_top) = tied_task; | |||
171 | ||||
172 | // Do bookkeeping for next push | |||
173 | task_stack->ts_top++; | |||
174 | task_stack->ts_entries++; | |||
175 | ||||
176 | if (task_stack->ts_entries & TASK_STACK_INDEX_MASK == 0) { | |||
177 | // Find beginning of this task block | |||
178 | kmp_stack_block_t *stack_block = | |||
179 | (kmp_stack_block_t *)(task_stack->ts_top - TASK_STACK_BLOCK_SIZE); | |||
180 | ||||
181 | // Check if we already have a block | |||
182 | if (stack_block->sb_next != | |||
183 | NULL__null) { // reset ts_top to beginning of next block | |||
184 | task_stack->ts_top = &stack_block->sb_next->sb_block[0]; | |||
185 | } else { // Alloc new block and link it up | |||
186 | kmp_stack_block_t *new_block = (kmp_stack_block_t *)__kmp_thread_calloc( | |||
187 | thread, sizeof(kmp_stack_block_t)); | |||
188 | ||||
189 | task_stack->ts_top = &new_block->sb_block[0]; | |||
190 | stack_block->sb_next = new_block; | |||
191 | new_block->sb_prev = stack_block; | |||
192 | new_block->sb_next = NULL__null; | |||
193 | ||||
194 | KA_TRACE(if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_push_task_stack(): GTID: %d; TASK: %p; Alloc new block: %p\n" , gtid, tied_task, new_block); } | |||
195 | 30,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_push_task_stack(): GTID: %d; TASK: %p; Alloc new block: %p\n" , gtid, tied_task, new_block); } | |||
196 | ("__kmp_push_task_stack(): GTID: %d; TASK: %p; Alloc new block: %p\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_push_task_stack(): GTID: %d; TASK: %p; Alloc new block: %p\n" , gtid, tied_task, new_block); } | |||
197 | gtid, tied_task, new_block))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_push_task_stack(): GTID: %d; TASK: %p; Alloc new block: %p\n" , gtid, tied_task, new_block); }; | |||
198 | } | |||
199 | } | |||
200 | KA_TRACE(20, ("__kmp_push_task_stack(exit): GTID: %d; TASK: %p\n", gtid,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task_stack(exit): GTID: %d; TASK: %p\n" , gtid, tied_task); } | |||
201 | tied_task))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task_stack(exit): GTID: %d; TASK: %p\n" , gtid, tied_task); }; | |||
202 | } | |||
203 | ||||
204 | // __kmp_pop_task_stack: Pop the tied task from the task stack. Don't return | |||
205 | // the task, just check to make sure it matches the ending task passed in. | |||
206 | // | |||
207 | // gtid: global thread identifier for the calling thread | |||
208 | // thread: thread info structure containing stack | |||
209 | // tied_task: the task popped off the stack | |||
210 | // ending_task: the task that is ending (should match popped task) | |||
211 | static void __kmp_pop_task_stack(kmp_int32 gtid, kmp_info_t *thread, | |||
212 | kmp_taskdata_t *ending_task) { | |||
213 | // GEH - need to consider what to do if tt_threads_data not allocated yet | |||
214 | kmp_thread_data_t *thread_data = | |||
215 | &thread->th.th_task_team->tt_threads_data[__kmp_tid_from_gtid(gtid)]; | |||
216 | kmp_task_stack_t *task_stack = &thread_data->td.td_susp_tied_tasks; | |||
217 | kmp_taskdata_t *tied_task; | |||
218 | ||||
219 | if (ending_task->td_flags.team_serial || ending_task->td_flags.tasking_ser) { | |||
220 | // Don't pop anything from stack if team or team tasks are serialized | |||
221 | return; | |||
222 | } | |||
223 | ||||
224 | KMP_DEBUG_ASSERT(task_stack->ts_top != NULL)if (!(task_stack->ts_top != __null)) { __kmp_debug_assert( "task_stack->ts_top != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 224); }; | |||
225 | KMP_DEBUG_ASSERT(task_stack->ts_entries > 0)if (!(task_stack->ts_entries > 0)) { __kmp_debug_assert ("task_stack->ts_entries > 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 225); }; | |||
226 | ||||
227 | KA_TRACE(20, ("__kmp_pop_task_stack(enter): GTID: %d; THREAD: %p\n", gtid,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_pop_task_stack(enter): GTID: %d; THREAD: %p\n" , gtid, thread); } | |||
228 | thread))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_pop_task_stack(enter): GTID: %d; THREAD: %p\n" , gtid, thread); }; | |||
229 | ||||
230 | // fix up ts_top if we need to pop from previous block | |||
231 | if (task_stack->ts_entries & TASK_STACK_INDEX_MASK == 0) { | |||
232 | kmp_stack_block_t *stack_block = (kmp_stack_block_t *)(task_stack->ts_top); | |||
233 | ||||
234 | stack_block = stack_block->sb_prev; | |||
235 | task_stack->ts_top = &stack_block->sb_block[TASK_STACK_BLOCK_SIZE]; | |||
236 | } | |||
237 | ||||
238 | // finish bookkeeping | |||
239 | task_stack->ts_top--; | |||
240 | task_stack->ts_entries--; | |||
241 | ||||
242 | tied_task = *(task_stack->ts_top); | |||
243 | ||||
244 | KMP_DEBUG_ASSERT(tied_task != NULL)if (!(tied_task != __null)) { __kmp_debug_assert("tied_task != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 244); }; | |||
245 | KMP_DEBUG_ASSERT(tied_task->td_flags.tasktype == TASK_TIED)if (!(tied_task->td_flags.tasktype == 1)) { __kmp_debug_assert ("tied_task->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 245); }; | |||
246 | KMP_DEBUG_ASSERT(tied_task == ending_task)if (!(tied_task == ending_task)) { __kmp_debug_assert("tied_task == ending_task" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 246); }; // If we built the stack correctly | |||
247 | ||||
248 | KA_TRACE(20, ("__kmp_pop_task_stack(exit): GTID: %d; TASK: %p\n", gtid,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_pop_task_stack(exit): GTID: %d; TASK: %p\n" , gtid, tied_task); } | |||
249 | tied_task))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_pop_task_stack(exit): GTID: %d; TASK: %p\n" , gtid, tied_task); }; | |||
250 | return; | |||
251 | } | |||
252 | #endif /* BUILD_TIED_TASK_STACK */ | |||
253 | ||||
254 | // __kmp_push_task: Add a task to the thread's deque | |||
255 | static kmp_int32 __kmp_push_task(kmp_int32 gtid, kmp_task_t *task) { | |||
256 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
257 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
258 | kmp_task_team_t *task_team = thread->th.th_task_team; | |||
259 | kmp_int32 tid = __kmp_tid_from_gtid(gtid); | |||
260 | kmp_thread_data_t *thread_data; | |||
261 | ||||
262 | KA_TRACE(20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d trying to push task %p.\n" , gtid, taskdata); } | |||
263 | ("__kmp_push_task: T#%d trying to push task %p.\n", gtid, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d trying to push task %p.\n" , gtid, taskdata); }; | |||
264 | ||||
265 | if (taskdata->td_flags.tiedness == TASK_UNTIED0) { | |||
266 | // untied task needs to increment counter so that the task structure is not | |||
267 | // freed prematurely | |||
268 | kmp_int32 counter = 1 + KMP_ATOMIC_INC(&taskdata->td_untied_count)(&taskdata->td_untied_count)->fetch_add(1, std::memory_order_acq_rel ); | |||
269 | KMP_DEBUG_USE_VAR(counter); | |||
270 | KA_TRACE(if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d untied_count (%d) incremented for task %p\n" , gtid, counter, taskdata); } | |||
271 | 20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d untied_count (%d) incremented for task %p\n" , gtid, counter, taskdata); } | |||
272 | ("__kmp_push_task: T#%d untied_count (%d) incremented for task %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d untied_count (%d) incremented for task %p\n" , gtid, counter, taskdata); } | |||
273 | gtid, counter, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d untied_count (%d) incremented for task %p\n" , gtid, counter, taskdata); }; | |||
274 | } | |||
275 | ||||
276 | // The first check avoids building task_team thread data if serialized | |||
277 | if (taskdata->td_flags.task_serial) { | |||
278 | KA_TRACE(20, ("__kmp_push_task: T#%d team serialized; returning "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d team serialized; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); } | |||
279 | "TASK_NOT_PUSHED for task %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d team serialized; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); } | |||
280 | gtid, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d team serialized; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); }; | |||
281 | return TASK_NOT_PUSHED1; | |||
282 | } | |||
283 | ||||
284 | // Now that serialized tasks have returned, we can assume that we are not in | |||
285 | // immediate exec mode | |||
286 | KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec)if (!(__kmp_tasking_mode != tskm_immediate_exec)) { __kmp_debug_assert ("__kmp_tasking_mode != tskm_immediate_exec", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 286); }; | |||
287 | if (!KMP_TASKING_ENABLED(task_team)(((task_team)->tt.tt_found_tasks) == (!0))) { | |||
288 | __kmp_enable_tasking(task_team, thread); | |||
289 | } | |||
290 | KMP_DEBUG_ASSERT(TCR_4(task_team->tt.tt_found_tasks) == TRUE)if (!((task_team->tt.tt_found_tasks) == (!0))) { __kmp_debug_assert ("(task_team->tt.tt_found_tasks) == (!0)", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 290); }; | |||
291 | KMP_DEBUG_ASSERT(TCR_PTR(task_team->tt.tt_threads_data) != NULL)if (!(((void *)(task_team->tt.tt_threads_data)) != __null) ) { __kmp_debug_assert("((void *)(task_team->tt.tt_threads_data)) != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 291); }; | |||
292 | ||||
293 | // Find tasking deque specific to encountering thread | |||
294 | thread_data = &task_team->tt.tt_threads_data[tid]; | |||
295 | ||||
296 | // No lock needed since only owner can allocate | |||
297 | if (thread_data->td.td_deque == NULL__null) { | |||
298 | __kmp_alloc_task_deque(thread, thread_data); | |||
299 | } | |||
300 | ||||
301 | // Check if deque is full | |||
302 | if (TCR_4(thread_data->td.td_deque_ntasks)(thread_data->td.td_deque_ntasks) >= | |||
303 | TASK_DEQUE_SIZE(thread_data->td)((thread_data->td).td_deque_size)) { | |||
304 | KA_TRACE(20, ("__kmp_push_task: T#%d deque is full; returning "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d deque is full; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); } | |||
305 | "TASK_NOT_PUSHED for task %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d deque is full; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); } | |||
306 | gtid, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d deque is full; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); }; | |||
307 | return TASK_NOT_PUSHED1; | |||
308 | } | |||
309 | ||||
310 | // Lock the deque for the task push operation | |||
311 | __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
312 | ||||
313 | #if OMP_45_ENABLED(50 >= 45) | |||
314 | // Need to recheck as we can get a proxy task from a thread outside of OpenMP | |||
315 | if (TCR_4(thread_data->td.td_deque_ntasks)(thread_data->td.td_deque_ntasks) >= | |||
316 | TASK_DEQUE_SIZE(thread_data->td)((thread_data->td).td_deque_size)) { | |||
317 | __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
318 | KA_TRACE(20, ("__kmp_push_task: T#%d deque is full on 2nd check; returning "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d deque is full on 2nd check; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); } | |||
319 | "TASK_NOT_PUSHED for task %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d deque is full on 2nd check; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); } | |||
320 | gtid, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d deque is full on 2nd check; returning " "TASK_NOT_PUSHED for task %p\n", gtid, taskdata); }; | |||
321 | return TASK_NOT_PUSHED1; | |||
322 | } | |||
323 | #else | |||
324 | // Must have room since no thread can add tasks but calling thread | |||
325 | KMP_DEBUG_ASSERT(TCR_4(thread_data->td.td_deque_ntasks) <if (!((thread_data->td.td_deque_ntasks) < ((thread_data ->td).td_deque_size))) { __kmp_debug_assert("(thread_data->td.td_deque_ntasks) < ((thread_data->td).td_deque_size)" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 326); } | |||
326 | TASK_DEQUE_SIZE(thread_data->td))if (!((thread_data->td.td_deque_ntasks) < ((thread_data ->td).td_deque_size))) { __kmp_debug_assert("(thread_data->td.td_deque_ntasks) < ((thread_data->td).td_deque_size)" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 326); }; | |||
327 | #endif | |||
328 | ||||
329 | thread_data->td.td_deque[thread_data->td.td_deque_tail] = | |||
330 | taskdata; // Push taskdata | |||
331 | // Wrap index. | |||
332 | thread_data->td.td_deque_tail = | |||
333 | (thread_data->td.td_deque_tail + 1) & TASK_DEQUE_MASK(thread_data->td)((thread_data->td).td_deque_size - 1); | |||
334 | TCW_4(thread_data->td.td_deque_ntasks,(thread_data->td.td_deque_ntasks) = ((thread_data->td.td_deque_ntasks ) + 1) | |||
335 | TCR_4(thread_data->td.td_deque_ntasks) + 1)(thread_data->td.td_deque_ntasks) = ((thread_data->td.td_deque_ntasks ) + 1); // Adjust task count | |||
336 | ||||
337 | KA_TRACE(20, ("__kmp_push_task: T#%d returning TASK_SUCCESSFULLY_PUSHED: "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d returning TASK_SUCCESSFULLY_PUSHED: " "task=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data ->td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); } | |||
338 | "task=%p ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d returning TASK_SUCCESSFULLY_PUSHED: " "task=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data ->td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); } | |||
339 | gtid, taskdata, thread_data->td.td_deque_ntasks,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d returning TASK_SUCCESSFULLY_PUSHED: " "task=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data ->td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); } | |||
340 | thread_data->td.td_deque_head, thread_data->td.td_deque_tail))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_push_task: T#%d returning TASK_SUCCESSFULLY_PUSHED: " "task=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data ->td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); }; | |||
341 | ||||
342 | __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
343 | ||||
344 | return TASK_SUCCESSFULLY_PUSHED0; | |||
345 | } | |||
346 | ||||
347 | // __kmp_pop_current_task_from_thread: set up current task from called thread | |||
348 | // when team ends | |||
349 | // | |||
350 | // this_thr: thread structure to set current_task in. | |||
351 | void __kmp_pop_current_task_from_thread(kmp_info_t *this_thr) { | |||
352 | KF_TRACE(10, ("__kmp_pop_current_task_from_thread(enter): T#%d "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(enter): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
353 | "this_thread=%p, curtask=%p, "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(enter): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
354 | "curtask_parent=%p\n",if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(enter): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
355 | 0, this_thr, this_thr->th.th_current_task,if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(enter): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
356 | this_thr->th.th_current_task->td_parent))if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(enter): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); }; | |||
357 | ||||
358 | this_thr->th.th_current_task = this_thr->th.th_current_task->td_parent; | |||
359 | ||||
360 | KF_TRACE(10, ("__kmp_pop_current_task_from_thread(exit): T#%d "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(exit): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
361 | "this_thread=%p, curtask=%p, "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(exit): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
362 | "curtask_parent=%p\n",if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(exit): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
363 | 0, this_thr, this_thr->th.th_current_task,if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(exit): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); } | |||
364 | this_thr->th.th_current_task->td_parent))if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_pop_current_task_from_thread(exit): T#%d " "this_thread=%p, curtask=%p, " "curtask_parent=%p\n", 0, this_thr , this_thr->th.th_current_task, this_thr->th.th_current_task ->td_parent); }; | |||
365 | } | |||
366 | ||||
367 | // __kmp_push_current_task_to_thread: set up current task in called thread for a | |||
368 | // new team | |||
369 | // | |||
370 | // this_thr: thread structure to set up | |||
371 | // team: team for implicit task data | |||
372 | // tid: thread within team to set up | |||
373 | void __kmp_push_current_task_to_thread(kmp_info_t *this_thr, kmp_team_t *team, | |||
374 | int tid) { | |||
375 | // current task of the thread is a parent of the new just created implicit | |||
376 | // tasks of new team | |||
377 | KF_TRACE(10, ("__kmp_push_current_task_to_thread(enter): T#%d this_thread=%p "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(enter): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
378 | "curtask=%p "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(enter): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
379 | "parent_task=%p\n",if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(enter): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
380 | tid, this_thr, this_thr->th.th_current_task,if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(enter): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
381 | team->t.t_implicit_task_taskdata[tid].td_parent))if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(enter): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); }; | |||
382 | ||||
383 | KMP_DEBUG_ASSERT(this_thr != NULL)if (!(this_thr != __null)) { __kmp_debug_assert("this_thr != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 383); }; | |||
384 | ||||
385 | if (tid == 0) { | |||
386 | if (this_thr->th.th_current_task != &team->t.t_implicit_task_taskdata[0]) { | |||
387 | team->t.t_implicit_task_taskdata[0].td_parent = | |||
388 | this_thr->th.th_current_task; | |||
389 | this_thr->th.th_current_task = &team->t.t_implicit_task_taskdata[0]; | |||
390 | } | |||
391 | } else { | |||
392 | team->t.t_implicit_task_taskdata[tid].td_parent = | |||
393 | team->t.t_implicit_task_taskdata[0].td_parent; | |||
394 | this_thr->th.th_current_task = &team->t.t_implicit_task_taskdata[tid]; | |||
395 | } | |||
396 | ||||
397 | KF_TRACE(10, ("__kmp_push_current_task_to_thread(exit): T#%d this_thread=%p "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(exit): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
398 | "curtask=%p "if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(exit): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
399 | "parent_task=%p\n",if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(exit): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
400 | tid, this_thr, this_thr->th.th_current_task,if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(exit): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); } | |||
401 | team->t.t_implicit_task_taskdata[tid].td_parent))if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_push_current_task_to_thread(exit): T#%d this_thread=%p " "curtask=%p " "parent_task=%p\n", tid, this_thr, this_thr-> th.th_current_task, team->t.t_implicit_task_taskdata[tid]. td_parent); }; | |||
402 | } | |||
403 | ||||
404 | // __kmp_task_start: bookkeeping for a task starting execution | |||
405 | // | |||
406 | // GTID: global thread id of calling thread | |||
407 | // task: task starting execution | |||
408 | // current_task: task suspending | |||
409 | static void __kmp_task_start(kmp_int32 gtid, kmp_task_t *task, | |||
410 | kmp_taskdata_t *current_task) { | |||
411 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
412 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
413 | ||||
414 | KA_TRACE(10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_start(enter): T#%d starting task %p: current_task=%p\n" , gtid, taskdata, current_task); } | |||
415 | ("__kmp_task_start(enter): T#%d starting task %p: current_task=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_start(enter): T#%d starting task %p: current_task=%p\n" , gtid, taskdata, current_task); } | |||
416 | gtid, taskdata, current_task))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_start(enter): T#%d starting task %p: current_task=%p\n" , gtid, taskdata, current_task); }; | |||
417 | ||||
418 | KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT)if (!(taskdata->td_flags.tasktype == 1)) { __kmp_debug_assert ("taskdata->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 418); }; | |||
419 | ||||
420 | // mark currently executing task as suspended | |||
421 | // TODO: GEH - make sure root team implicit task is initialized properly. | |||
422 | // KMP_DEBUG_ASSERT( current_task -> td_flags.executing == 1 ); | |||
423 | current_task->td_flags.executing = 0; | |||
424 | ||||
425 | // Add task to stack if tied | |||
426 | #ifdef BUILD_TIED_TASK_STACK | |||
427 | if (taskdata->td_flags.tiedness == TASK_TIED1) { | |||
428 | __kmp_push_task_stack(gtid, thread, taskdata); | |||
429 | } | |||
430 | #endif /* BUILD_TIED_TASK_STACK */ | |||
431 | ||||
432 | // mark starting task as executing and as current task | |||
433 | thread->th.th_current_task = taskdata; | |||
434 | ||||
435 | KMP_DEBUG_ASSERT(taskdata->td_flags.started == 0 ||if (!(taskdata->td_flags.started == 0 || taskdata->td_flags .tiedness == 0)) { __kmp_debug_assert("taskdata->td_flags.started == 0 || taskdata->td_flags.tiedness == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 436); } | |||
436 | taskdata->td_flags.tiedness == TASK_UNTIED)if (!(taskdata->td_flags.started == 0 || taskdata->td_flags .tiedness == 0)) { __kmp_debug_assert("taskdata->td_flags.started == 0 || taskdata->td_flags.tiedness == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 436); }; | |||
437 | KMP_DEBUG_ASSERT(taskdata->td_flags.executing == 0 ||if (!(taskdata->td_flags.executing == 0 || taskdata->td_flags .tiedness == 0)) { __kmp_debug_assert("taskdata->td_flags.executing == 0 || taskdata->td_flags.tiedness == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 438); } | |||
438 | taskdata->td_flags.tiedness == TASK_UNTIED)if (!(taskdata->td_flags.executing == 0 || taskdata->td_flags .tiedness == 0)) { __kmp_debug_assert("taskdata->td_flags.executing == 0 || taskdata->td_flags.tiedness == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 438); }; | |||
439 | taskdata->td_flags.started = 1; | |||
440 | taskdata->td_flags.executing = 1; | |||
441 | KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 0)if (!(taskdata->td_flags.complete == 0)) { __kmp_debug_assert ("taskdata->td_flags.complete == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 441); }; | |||
442 | KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0)if (!(taskdata->td_flags.freed == 0)) { __kmp_debug_assert ("taskdata->td_flags.freed == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 442); }; | |||
443 | ||||
444 | // GEH TODO: shouldn't we pass some sort of location identifier here? | |||
445 | // APT: yes, we will pass location here. | |||
446 | // need to store current thread state (in a thread or taskdata structure) | |||
447 | // before setting work_state, otherwise wrong state is set after end of task | |||
448 | ||||
449 | KA_TRACE(10, ("__kmp_task_start(exit): T#%d task=%p\n", gtid, taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_start(exit): T#%d task=%p\n" , gtid, taskdata); }; | |||
450 | ||||
451 | return; | |||
452 | } | |||
453 | ||||
454 | #if OMPT_SUPPORT1 | |||
455 | //------------------------------------------------------------------------------ | |||
456 | // __ompt_task_init: | |||
457 | // Initialize OMPT fields maintained by a task. This will only be called after | |||
458 | // ompt_start_tool, so we already know whether ompt is enabled or not. | |||
459 | ||||
460 | static inline void __ompt_task_init(kmp_taskdata_t *task, int tid) { | |||
461 | // The calls to __ompt_task_init already have the ompt_enabled condition. | |||
462 | task->ompt_task_info.task_data.value = 0; | |||
463 | task->ompt_task_info.frame.exit_frame = NULL__null; | |||
464 | task->ompt_task_info.frame.enter_frame = NULL__null; | |||
465 | #if OMP_40_ENABLED(50 >= 40) | |||
466 | task->ompt_task_info.ndeps = 0; | |||
467 | task->ompt_task_info.deps = NULL__null; | |||
468 | #endif /* OMP_40_ENABLED */ | |||
469 | } | |||
470 | ||||
471 | // __ompt_task_start: | |||
472 | // Build and trigger task-begin event | |||
473 | static inline void __ompt_task_start(kmp_task_t *task, | |||
474 | kmp_taskdata_t *current_task, | |||
475 | kmp_int32 gtid) { | |||
476 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
477 | ompt_task_status_t status = ompt_task_switch; | |||
478 | if (__kmp_threads[gtid]->th.ompt_thread_info.ompt_task_yielded) { | |||
479 | status = ompt_task_yield; | |||
480 | __kmp_threads[gtid]->th.ompt_thread_info.ompt_task_yielded = 0; | |||
481 | } | |||
482 | /* let OMPT know that we're about to run this task */ | |||
483 | if (ompt_enabled.ompt_callback_task_schedule) { | |||
484 | ompt_callbacks.ompt_callback(ompt_callback_task_schedule)ompt_callback_task_schedule_callback( | |||
485 | &(current_task->ompt_task_info.task_data), status, | |||
486 | &(taskdata->ompt_task_info.task_data)); | |||
487 | } | |||
488 | taskdata->ompt_task_info.scheduling_parent = current_task; | |||
489 | } | |||
490 | ||||
491 | // __ompt_task_finish: | |||
492 | // Build and trigger final task-schedule event | |||
493 | static inline void | |||
494 | __ompt_task_finish(kmp_task_t *task, kmp_taskdata_t *resumed_task, | |||
495 | ompt_task_status_t status = ompt_task_complete) { | |||
496 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
497 | if (__kmp_omp_cancellation && taskdata->td_taskgroup && | |||
498 | taskdata->td_taskgroup->cancel_request == cancel_taskgroup) { | |||
499 | status = ompt_task_cancel; | |||
500 | } | |||
501 | ||||
502 | /* let OMPT know that we're returning to the callee task */ | |||
503 | if (ompt_enabled.ompt_callback_task_schedule) { | |||
504 | ompt_callbacks.ompt_callback(ompt_callback_task_schedule)ompt_callback_task_schedule_callback( | |||
505 | &(taskdata->ompt_task_info.task_data), status, | |||
506 | &((resumed_task ? resumed_task | |||
507 | : (taskdata->ompt_task_info.scheduling_parent | |||
508 | ? taskdata->ompt_task_info.scheduling_parent | |||
509 | : taskdata->td_parent)) | |||
510 | ->ompt_task_info.task_data)); | |||
511 | } | |||
512 | } | |||
513 | #endif | |||
514 | ||||
515 | template <bool ompt> | |||
516 | static void __kmpc_omp_task_begin_if0_template(ident_t *loc_ref, kmp_int32 gtid, | |||
517 | kmp_task_t *task, | |||
518 | void *frame_address, | |||
519 | void *return_address) { | |||
520 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
521 | kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task; | |||
522 | ||||
523 | KA_TRACE(10, ("__kmpc_omp_task_begin_if0(enter): T#%d loc=%p task=%p "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0(enter): T#%d loc=%p task=%p " "current_task=%p\n", gtid, loc_ref, taskdata, current_task); } | |||
524 | "current_task=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0(enter): T#%d loc=%p task=%p " "current_task=%p\n", gtid, loc_ref, taskdata, current_task); } | |||
525 | gtid, loc_ref, taskdata, current_task))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0(enter): T#%d loc=%p task=%p " "current_task=%p\n", gtid, loc_ref, taskdata, current_task); }; | |||
526 | ||||
527 | if (taskdata->td_flags.tiedness == TASK_UNTIED0) { | |||
528 | // untied task needs to increment counter so that the task structure is not | |||
529 | // freed prematurely | |||
530 | kmp_int32 counter = 1 + KMP_ATOMIC_INC(&taskdata->td_untied_count)(&taskdata->td_untied_count)->fetch_add(1, std::memory_order_acq_rel ); | |||
531 | KMP_DEBUG_USE_VAR(counter); | |||
532 | KA_TRACE(20, ("__kmpc_omp_task_begin_if0: T#%d untied_count (%d) "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0: T#%d untied_count (%d) " "incremented for task %p\n", gtid, counter, taskdata); } | |||
533 | "incremented for task %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0: T#%d untied_count (%d) " "incremented for task %p\n", gtid, counter, taskdata); } | |||
534 | gtid, counter, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0: T#%d untied_count (%d) " "incremented for task %p\n", gtid, counter, taskdata); }; | |||
535 | } | |||
536 | ||||
537 | taskdata->td_flags.task_serial = | |||
538 | 1; // Execute this task immediately, not deferred. | |||
539 | __kmp_task_start(gtid, task, current_task); | |||
540 | ||||
541 | #if OMPT_SUPPORT1 | |||
542 | if (ompt) { | |||
543 | if (current_task->ompt_task_info.frame.enter_frame == NULL__null) { | |||
544 | current_task->ompt_task_info.frame.enter_frame = | |||
545 | taskdata->ompt_task_info.frame.exit_frame = frame_address; | |||
546 | } | |||
547 | if (ompt_enabled.ompt_callback_task_create) { | |||
548 | ompt_task_info_t *parent_info = &(current_task->ompt_task_info); | |||
549 | ompt_callbacks.ompt_callback(ompt_callback_task_create)ompt_callback_task_create_callback( | |||
550 | &(parent_info->task_data), &(parent_info->frame), | |||
551 | &(taskdata->ompt_task_info.task_data), | |||
552 | ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(taskdata)((taskdata->td_flags.task_serial || taskdata->td_flags. tasking_ser) ? ompt_task_undeferred : 0x0) | ((!(taskdata-> td_flags.tiedness)) ? ompt_task_untied : 0x0) | (taskdata-> td_flags.final ? ompt_task_final : 0x0) | (taskdata->td_flags .merged_if0 ? ompt_task_mergeable : 0x0), 0, | |||
553 | return_address); | |||
554 | } | |||
555 | __ompt_task_start(task, current_task, gtid); | |||
556 | } | |||
557 | #endif // OMPT_SUPPORT | |||
558 | ||||
559 | KA_TRACE(10, ("__kmpc_omp_task_begin_if0(exit): T#%d loc=%p task=%p,\n", gtid,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0(exit): T#%d loc=%p task=%p,\n" , gtid, loc_ref, taskdata); } | |||
560 | loc_ref, taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin_if0(exit): T#%d loc=%p task=%p,\n" , gtid, loc_ref, taskdata); }; | |||
561 | } | |||
562 | ||||
563 | #if OMPT_SUPPORT1 | |||
564 | OMPT_NOINLINE__attribute__((noinline)) | |||
565 | static void __kmpc_omp_task_begin_if0_ompt(ident_t *loc_ref, kmp_int32 gtid, | |||
566 | kmp_task_t *task, | |||
567 | void *frame_address, | |||
568 | void *return_address) { | |||
569 | __kmpc_omp_task_begin_if0_template<true>(loc_ref, gtid, task, frame_address, | |||
570 | return_address); | |||
571 | } | |||
572 | #endif // OMPT_SUPPORT | |||
573 | ||||
574 | // __kmpc_omp_task_begin_if0: report that a given serialized task has started | |||
575 | // execution | |||
576 | // | |||
577 | // loc_ref: source location information; points to beginning of task block. | |||
578 | // gtid: global thread number. | |||
579 | // task: task thunk for the started task. | |||
580 | void __kmpc_omp_task_begin_if0(ident_t *loc_ref, kmp_int32 gtid, | |||
581 | kmp_task_t *task) { | |||
582 | #if OMPT_SUPPORT1 | |||
583 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
584 | OMPT_STORE_RETURN_ADDRESS(gtid)if (ompt_enabled.enabled && gtid >= 0 && __kmp_threads [gtid] && !__kmp_threads[gtid]->th.ompt_thread_info .return_address) __kmp_threads[gtid]->th.ompt_thread_info. return_address = __builtin_return_address(0); | |||
585 | __kmpc_omp_task_begin_if0_ompt(loc_ref, gtid, task, | |||
586 | OMPT_GET_FRAME_ADDRESS(1)__builtin_frame_address(1), | |||
587 | OMPT_LOAD_RETURN_ADDRESS(gtid)__ompt_load_return_address(gtid)); | |||
588 | return; | |||
589 | } | |||
590 | #endif | |||
591 | __kmpc_omp_task_begin_if0_template<false>(loc_ref, gtid, task, NULL__null, NULL__null); | |||
592 | } | |||
593 | ||||
594 | #ifdef TASK_UNUSED | |||
595 | // __kmpc_omp_task_begin: report that a given task has started execution | |||
596 | // NEVER GENERATED BY COMPILER, DEPRECATED!!! | |||
597 | void __kmpc_omp_task_begin(ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *task) { | |||
598 | kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task; | |||
599 | ||||
600 | KA_TRACE(if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin(enter): T#%d loc=%p task=%p current_task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1), current_task ); } | |||
601 | 10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin(enter): T#%d loc=%p task=%p current_task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1), current_task ); } | |||
602 | ("__kmpc_omp_task_begin(enter): T#%d loc=%p task=%p current_task=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin(enter): T#%d loc=%p task=%p current_task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1), current_task ); } | |||
603 | gtid, loc_ref, KMP_TASK_TO_TASKDATA(task), current_task))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin(enter): T#%d loc=%p task=%p current_task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1), current_task ); }; | |||
604 | ||||
605 | __kmp_task_start(gtid, task, current_task); | |||
606 | ||||
607 | KA_TRACE(10, ("__kmpc_omp_task_begin(exit): T#%d loc=%p task=%p,\n", gtid,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin(exit): T#%d loc=%p task=%p,\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); } | |||
608 | loc_ref, KMP_TASK_TO_TASKDATA(task)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_begin(exit): T#%d loc=%p task=%p,\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); }; | |||
609 | return; | |||
610 | } | |||
611 | #endif // TASK_UNUSED | |||
612 | ||||
613 | // __kmp_free_task: free the current task space and the space for shareds | |||
614 | // | |||
615 | // gtid: Global thread ID of calling thread | |||
616 | // taskdata: task to free | |||
617 | // thread: thread data structure of caller | |||
618 | static void __kmp_free_task(kmp_int32 gtid, kmp_taskdata_t *taskdata, | |||
619 | kmp_info_t *thread) { | |||
620 | KA_TRACE(30, ("__kmp_free_task: T#%d freeing data from task %p\n", gtid,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_free_task: T#%d freeing data from task %p\n" , gtid, taskdata); } | |||
621 | taskdata))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_free_task: T#%d freeing data from task %p\n" , gtid, taskdata); }; | |||
622 | ||||
623 | // Check to make sure all flags and counters have the correct values | |||
624 | KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT)if (!(taskdata->td_flags.tasktype == 1)) { __kmp_debug_assert ("taskdata->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 624); }; | |||
625 | KMP_DEBUG_ASSERT(taskdata->td_flags.executing == 0)if (!(taskdata->td_flags.executing == 0)) { __kmp_debug_assert ("taskdata->td_flags.executing == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 625); }; | |||
626 | KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 1)if (!(taskdata->td_flags.complete == 1)) { __kmp_debug_assert ("taskdata->td_flags.complete == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 626); }; | |||
627 | KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0)if (!(taskdata->td_flags.freed == 0)) { __kmp_debug_assert ("taskdata->td_flags.freed == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 627); }; | |||
628 | KMP_DEBUG_ASSERT(taskdata->td_allocated_child_tasks == 0 ||if (!(taskdata->td_allocated_child_tasks == 0 || taskdata-> td_flags.task_serial == 1)) { __kmp_debug_assert("taskdata->td_allocated_child_tasks == 0 || taskdata->td_flags.task_serial == 1" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 629); } | |||
629 | taskdata->td_flags.task_serial == 1)if (!(taskdata->td_allocated_child_tasks == 0 || taskdata-> td_flags.task_serial == 1)) { __kmp_debug_assert("taskdata->td_allocated_child_tasks == 0 || taskdata->td_flags.task_serial == 1" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 629); }; | |||
630 | KMP_DEBUG_ASSERT(taskdata->td_incomplete_child_tasks == 0)if (!(taskdata->td_incomplete_child_tasks == 0)) { __kmp_debug_assert ("taskdata->td_incomplete_child_tasks == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 630); }; | |||
631 | ||||
632 | taskdata->td_flags.freed = 1; | |||
633 | ANNOTATE_HAPPENS_BEFORE(taskdata); | |||
634 | // deallocate the taskdata and shared variable blocks associated with this task | |||
635 | #if USE_FAST_MEMORY3 | |||
636 | __kmp_fast_free(thread, taskdata)___kmp_fast_free((thread), (taskdata), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 636); | |||
637 | #else /* ! USE_FAST_MEMORY */ | |||
638 | __kmp_thread_free(thread, taskdata)___kmp_thread_free((thread), (taskdata), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 638); | |||
639 | #endif | |||
640 | ||||
641 | KA_TRACE(20, ("__kmp_free_task: T#%d freed task %p\n", gtid, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task: T#%d freed task %p\n" , gtid, taskdata); }; | |||
642 | } | |||
643 | ||||
644 | // __kmp_free_task_and_ancestors: free the current task and ancestors without | |||
645 | // children | |||
646 | // | |||
647 | // gtid: Global thread ID of calling thread | |||
648 | // taskdata: task to free | |||
649 | // thread: thread data structure of caller | |||
650 | static void __kmp_free_task_and_ancestors(kmp_int32 gtid, | |||
651 | kmp_taskdata_t *taskdata, | |||
652 | kmp_info_t *thread) { | |||
653 | #if OMP_45_ENABLED(50 >= 45) | |||
654 | // Proxy tasks must always be allowed to free their parents | |||
655 | // because they can be run in background even in serial mode. | |||
656 | kmp_int32 team_serial = | |||
657 | (taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser) && | |||
658 | !taskdata->td_flags.proxy; | |||
659 | #else | |||
660 | kmp_int32 team_serial = | |||
661 | taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser; | |||
662 | #endif | |||
663 | KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT)if (!(taskdata->td_flags.tasktype == 1)) { __kmp_debug_assert ("taskdata->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 663); }; | |||
664 | ||||
665 | kmp_int32 children = KMP_ATOMIC_DEC(&taskdata->td_allocated_child_tasks)(&taskdata->td_allocated_child_tasks)->fetch_sub(1, std::memory_order_acq_rel) - 1; | |||
666 | KMP_DEBUG_ASSERT(children >= 0)if (!(children >= 0)) { __kmp_debug_assert("children >= 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 666); }; | |||
667 | ||||
668 | // Now, go up the ancestor tree to see if any ancestors can now be freed. | |||
669 | while (children == 0) { | |||
670 | kmp_taskdata_t *parent_taskdata = taskdata->td_parent; | |||
671 | ||||
672 | KA_TRACE(20, ("__kmp_free_task_and_ancestors(enter): T#%d task %p complete "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_and_ancestors(enter): T#%d task %p complete " "and freeing itself\n", gtid, taskdata); } | |||
673 | "and freeing itself\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_and_ancestors(enter): T#%d task %p complete " "and freeing itself\n", gtid, taskdata); } | |||
674 | gtid, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_and_ancestors(enter): T#%d task %p complete " "and freeing itself\n", gtid, taskdata); }; | |||
675 | ||||
676 | // --- Deallocate my ancestor task --- | |||
677 | __kmp_free_task(gtid, taskdata, thread); | |||
678 | ||||
679 | taskdata = parent_taskdata; | |||
680 | ||||
681 | // Stop checking ancestors at implicit task instead of walking up ancestor | |||
682 | // tree to avoid premature deallocation of ancestors. | |||
683 | if (team_serial || taskdata->td_flags.tasktype == TASK_IMPLICIT0) | |||
684 | return; | |||
685 | ||||
686 | // Predecrement simulated by "- 1" calculation | |||
687 | children = KMP_ATOMIC_DEC(&taskdata->td_allocated_child_tasks)(&taskdata->td_allocated_child_tasks)->fetch_sub(1, std::memory_order_acq_rel) - 1; | |||
688 | KMP_DEBUG_ASSERT(children >= 0)if (!(children >= 0)) { __kmp_debug_assert("children >= 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 688); }; | |||
689 | } | |||
690 | ||||
691 | KA_TRACE(if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_and_ancestors(exit): T#%d task %p has %d children; " "not freeing it yet\n", gtid, taskdata, children); } | |||
692 | 20, ("__kmp_free_task_and_ancestors(exit): T#%d task %p has %d children; "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_and_ancestors(exit): T#%d task %p has %d children; " "not freeing it yet\n", gtid, taskdata, children); } | |||
693 | "not freeing it yet\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_and_ancestors(exit): T#%d task %p has %d children; " "not freeing it yet\n", gtid, taskdata, children); } | |||
694 | gtid, taskdata, children))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_and_ancestors(exit): T#%d task %p has %d children; " "not freeing it yet\n", gtid, taskdata, children); }; | |||
695 | } | |||
696 | ||||
697 | // __kmp_task_finish: bookkeeping to do when a task finishes execution | |||
698 | // | |||
699 | // gtid: global thread ID for calling thread | |||
700 | // task: task to be finished | |||
701 | // resumed_task: task to be resumed. (may be NULL if task is serialized) | |||
702 | template <bool ompt> | |||
703 | static void __kmp_task_finish(kmp_int32 gtid, kmp_task_t *task, | |||
704 | kmp_taskdata_t *resumed_task) { | |||
705 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
706 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
707 | kmp_task_team_t *task_team = | |||
708 | thread->th.th_task_team; // might be NULL for serial teams... | |||
709 | kmp_int32 children = 0; | |||
710 | ||||
711 | KA_TRACE(10, ("__kmp_task_finish(enter): T#%d finishing task %p and resuming "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(enter): T#%d finishing task %p and resuming " "task %p\n", gtid, taskdata, resumed_task); } | |||
712 | "task %p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(enter): T#%d finishing task %p and resuming " "task %p\n", gtid, taskdata, resumed_task); } | |||
713 | gtid, taskdata, resumed_task))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(enter): T#%d finishing task %p and resuming " "task %p\n", gtid, taskdata, resumed_task); }; | |||
714 | ||||
715 | KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT)if (!(taskdata->td_flags.tasktype == 1)) { __kmp_debug_assert ("taskdata->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 715); }; | |||
716 | ||||
717 | // Pop task from stack if tied | |||
718 | #ifdef BUILD_TIED_TASK_STACK | |||
719 | if (taskdata->td_flags.tiedness == TASK_TIED1) { | |||
720 | __kmp_pop_task_stack(gtid, thread, taskdata); | |||
721 | } | |||
722 | #endif /* BUILD_TIED_TASK_STACK */ | |||
723 | ||||
724 | if (taskdata->td_flags.tiedness == TASK_UNTIED0) { | |||
725 | // untied task needs to check the counter so that the task structure is not | |||
726 | // freed prematurely | |||
727 | kmp_int32 counter = KMP_ATOMIC_DEC(&taskdata->td_untied_count)(&taskdata->td_untied_count)->fetch_sub(1, std::memory_order_acq_rel ) - 1; | |||
728 | KA_TRACE(if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_finish: T#%d untied_count (%d) decremented for task %p\n" , gtid, counter, taskdata); } | |||
729 | 20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_finish: T#%d untied_count (%d) decremented for task %p\n" , gtid, counter, taskdata); } | |||
730 | ("__kmp_task_finish: T#%d untied_count (%d) decremented for task %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_finish: T#%d untied_count (%d) decremented for task %p\n" , gtid, counter, taskdata); } | |||
731 | gtid, counter, taskdata))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_finish: T#%d untied_count (%d) decremented for task %p\n" , gtid, counter, taskdata); }; | |||
732 | if (counter > 0) { | |||
733 | // untied task is not done, to be continued possibly by other thread, do | |||
734 | // not free it now | |||
735 | if (resumed_task == NULL__null) { | |||
736 | KMP_DEBUG_ASSERT(taskdata->td_flags.task_serial)if (!(taskdata->td_flags.task_serial)) { __kmp_debug_assert ("taskdata->td_flags.task_serial", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 736); }; | |||
737 | resumed_task = taskdata->td_parent; // In a serialized task, the resumed | |||
738 | // task is the parent | |||
739 | } | |||
740 | thread->th.th_current_task = resumed_task; // restore current_task | |||
741 | resumed_task->td_flags.executing = 1; // resume previous task | |||
742 | KA_TRACE(10, ("__kmp_task_finish(exit): T#%d partially done task %p, "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(exit): T#%d partially done task %p, " "resuming task %p\n", gtid, taskdata, resumed_task); } | |||
743 | "resuming task %p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(exit): T#%d partially done task %p, " "resuming task %p\n", gtid, taskdata, resumed_task); } | |||
744 | gtid, taskdata, resumed_task))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(exit): T#%d partially done task %p, " "resuming task %p\n", gtid, taskdata, resumed_task); }; | |||
745 | return; | |||
746 | } | |||
747 | } | |||
748 | #if OMPT_SUPPORT1 | |||
749 | if (ompt) | |||
750 | __ompt_task_finish(task, resumed_task); | |||
751 | #endif | |||
752 | ||||
753 | KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 0)if (!(taskdata->td_flags.complete == 0)) { __kmp_debug_assert ("taskdata->td_flags.complete == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 753); }; | |||
754 | taskdata->td_flags.complete = 1; // mark the task as completed | |||
755 | KMP_DEBUG_ASSERT(taskdata->td_flags.started == 1)if (!(taskdata->td_flags.started == 1)) { __kmp_debug_assert ("taskdata->td_flags.started == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 755); }; | |||
756 | KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0)if (!(taskdata->td_flags.freed == 0)) { __kmp_debug_assert ("taskdata->td_flags.freed == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 756); }; | |||
757 | ||||
758 | // Only need to keep track of count if team parallel and tasking not | |||
759 | // serialized | |||
760 | if (!(taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser)) { | |||
761 | // Predecrement simulated by "- 1" calculation | |||
762 | children = | |||
763 | KMP_ATOMIC_DEC(&taskdata->td_parent->td_incomplete_child_tasks)(&taskdata->td_parent->td_incomplete_child_tasks)-> fetch_sub(1, std::memory_order_acq_rel) - 1; | |||
764 | KMP_DEBUG_ASSERT(children >= 0)if (!(children >= 0)) { __kmp_debug_assert("children >= 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 764); }; | |||
765 | #if OMP_40_ENABLED(50 >= 40) | |||
766 | if (taskdata->td_taskgroup) | |||
767 | KMP_ATOMIC_DEC(&taskdata->td_taskgroup->count)(&taskdata->td_taskgroup->count)->fetch_sub(1, std ::memory_order_acq_rel); | |||
768 | __kmp_release_deps(gtid, taskdata); | |||
769 | #if OMP_45_ENABLED(50 >= 45) | |||
770 | } else if (task_team && task_team->tt.tt_found_proxy_tasks) { | |||
771 | // if we found proxy tasks there could exist a dependency chain | |||
772 | // with the proxy task as origin | |||
773 | __kmp_release_deps(gtid, taskdata); | |||
774 | #endif // OMP_45_ENABLED | |||
775 | #endif // OMP_40_ENABLED | |||
776 | } | |||
777 | ||||
778 | // td_flags.executing must be marked as 0 after __kmp_release_deps has been | |||
779 | // called. Othertwise, if a task is executed immediately from the release_deps | |||
780 | // code, the flag will be reset to 1 again by this same function | |||
781 | KMP_DEBUG_ASSERT(taskdata->td_flags.executing == 1)if (!(taskdata->td_flags.executing == 1)) { __kmp_debug_assert ("taskdata->td_flags.executing == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 781); }; | |||
782 | taskdata->td_flags.executing = 0; // suspend the finishing task | |||
783 | ||||
784 | KA_TRACE(if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_finish: T#%d finished task %p, %d incomplete children\n" , gtid, taskdata, children); } | |||
785 | 20, ("__kmp_task_finish: T#%d finished task %p, %d incomplete children\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_finish: T#%d finished task %p, %d incomplete children\n" , gtid, taskdata, children); } | |||
786 | gtid, taskdata, children))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_finish: T#%d finished task %p, %d incomplete children\n" , gtid, taskdata, children); }; | |||
787 | ||||
788 | #if OMP_40_ENABLED(50 >= 40) | |||
789 | /* If the tasks' destructor thunk flag has been set, we need to invoke the | |||
790 | destructor thunk that has been generated by the compiler. The code is | |||
791 | placed here, since at this point other tasks might have been released | |||
792 | hence overlapping the destructor invokations with some other work in the | |||
793 | released tasks. The OpenMP spec is not specific on when the destructors | |||
794 | are invoked, so we should be free to choose. */ | |||
795 | if (taskdata->td_flags.destructors_thunk) { | |||
796 | kmp_routine_entry_t destr_thunk = task->data1.destructors; | |||
797 | KMP_ASSERT(destr_thunk)if (!(destr_thunk)) { __kmp_debug_assert("destr_thunk", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 797); }; | |||
798 | destr_thunk(gtid, task); | |||
799 | } | |||
800 | #endif // OMP_40_ENABLED | |||
801 | ||||
802 | // bookkeeping for resuming task: | |||
803 | // GEH - note tasking_ser => task_serial | |||
804 | KMP_DEBUG_ASSERT(if (!((taskdata->td_flags.tasking_ser || taskdata->td_flags .task_serial) == taskdata->td_flags.task_serial)) { __kmp_debug_assert ("(taskdata->td_flags.tasking_ser || taskdata->td_flags.task_serial) == taskdata->td_flags.task_serial" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 806); } | |||
805 | (taskdata->td_flags.tasking_ser || taskdata->td_flags.task_serial) ==if (!((taskdata->td_flags.tasking_ser || taskdata->td_flags .task_serial) == taskdata->td_flags.task_serial)) { __kmp_debug_assert ("(taskdata->td_flags.tasking_ser || taskdata->td_flags.task_serial) == taskdata->td_flags.task_serial" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 806); } | |||
806 | taskdata->td_flags.task_serial)if (!((taskdata->td_flags.tasking_ser || taskdata->td_flags .task_serial) == taskdata->td_flags.task_serial)) { __kmp_debug_assert ("(taskdata->td_flags.tasking_ser || taskdata->td_flags.task_serial) == taskdata->td_flags.task_serial" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 806); }; | |||
807 | if (taskdata->td_flags.task_serial) { | |||
808 | if (resumed_task == NULL__null) { | |||
809 | resumed_task = taskdata->td_parent; // In a serialized task, the resumed | |||
810 | // task is the parent | |||
811 | } | |||
812 | } else { | |||
813 | KMP_DEBUG_ASSERT(resumed_task !=if (!(resumed_task != __null)) { __kmp_debug_assert("resumed_task != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 814); } | |||
814 | NULL)if (!(resumed_task != __null)) { __kmp_debug_assert("resumed_task != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 814); }; // verify that resumed task is passed as arguemnt | |||
815 | } | |||
816 | ||||
817 | // Free this task and then ancestor tasks if they have no children. | |||
818 | // Restore th_current_task first as suggested by John: | |||
819 | // johnmc: if an asynchronous inquiry peers into the runtime system | |||
820 | // it doesn't see the freed task as the current task. | |||
821 | thread->th.th_current_task = resumed_task; | |||
822 | __kmp_free_task_and_ancestors(gtid, taskdata, thread); | |||
823 | ||||
824 | // TODO: GEH - make sure root team implicit task is initialized properly. | |||
825 | // KMP_DEBUG_ASSERT( resumed_task->td_flags.executing == 0 ); | |||
826 | resumed_task->td_flags.executing = 1; // resume previous task | |||
| ||||
827 | ||||
828 | KA_TRACE(if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(exit): T#%d finished task %p, resuming task %p\n" , gtid, taskdata, resumed_task); } | |||
829 | 10, ("__kmp_task_finish(exit): T#%d finished task %p, resuming task %p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(exit): T#%d finished task %p, resuming task %p\n" , gtid, taskdata, resumed_task); } | |||
830 | gtid, taskdata, resumed_task))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_finish(exit): T#%d finished task %p, resuming task %p\n" , gtid, taskdata, resumed_task); }; | |||
831 | ||||
832 | return; | |||
833 | } | |||
834 | ||||
835 | template <bool ompt> | |||
836 | static void __kmpc_omp_task_complete_if0_template(ident_t *loc_ref, | |||
837 | kmp_int32 gtid, | |||
838 | kmp_task_t *task) { | |||
839 | KA_TRACE(10, ("__kmpc_omp_task_complete_if0(enter): T#%d loc=%p task=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete_if0(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); } | |||
840 | gtid, loc_ref, KMP_TASK_TO_TASKDATA(task)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete_if0(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); }; | |||
841 | // this routine will provide task to resume | |||
842 | __kmp_task_finish<ompt>(gtid, task, NULL__null); | |||
843 | ||||
844 | KA_TRACE(10, ("__kmpc_omp_task_complete_if0(exit): T#%d loc=%p task=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete_if0(exit): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); } | |||
845 | gtid, loc_ref, KMP_TASK_TO_TASKDATA(task)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete_if0(exit): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); }; | |||
846 | ||||
847 | #if OMPT_SUPPORT1 | |||
848 | if (ompt) { | |||
849 | omp_frame_t *ompt_frame; | |||
850 | __ompt_get_task_info_internal(0, NULL__null, NULL__null, &ompt_frame, NULL__null, NULL__null); | |||
851 | ompt_frame->enter_frame = NULL__null; | |||
852 | } | |||
853 | #endif | |||
854 | ||||
855 | return; | |||
856 | } | |||
857 | ||||
858 | #if OMPT_SUPPORT1 | |||
859 | OMPT_NOINLINE__attribute__((noinline)) | |||
860 | void __kmpc_omp_task_complete_if0_ompt(ident_t *loc_ref, kmp_int32 gtid, | |||
861 | kmp_task_t *task) { | |||
862 | __kmpc_omp_task_complete_if0_template<true>(loc_ref, gtid, task); | |||
863 | } | |||
864 | #endif // OMPT_SUPPORT | |||
865 | ||||
866 | // __kmpc_omp_task_complete_if0: report that a task has completed execution | |||
867 | // | |||
868 | // loc_ref: source location information; points to end of task block. | |||
869 | // gtid: global thread number. | |||
870 | // task: task thunk for the completed task. | |||
871 | void __kmpc_omp_task_complete_if0(ident_t *loc_ref, kmp_int32 gtid, | |||
872 | kmp_task_t *task) { | |||
873 | #if OMPT_SUPPORT1 | |||
874 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
| ||||
875 | __kmpc_omp_task_complete_if0_ompt(loc_ref, gtid, task); | |||
876 | return; | |||
877 | } | |||
878 | #endif | |||
879 | __kmpc_omp_task_complete_if0_template<false>(loc_ref, gtid, task); | |||
880 | } | |||
881 | ||||
882 | #ifdef TASK_UNUSED | |||
883 | // __kmpc_omp_task_complete: report that a task has completed execution | |||
884 | // NEVER GENERATED BY COMPILER, DEPRECATED!!! | |||
885 | void __kmpc_omp_task_complete(ident_t *loc_ref, kmp_int32 gtid, | |||
886 | kmp_task_t *task) { | |||
887 | KA_TRACE(10, ("__kmpc_omp_task_complete(enter): T#%d loc=%p task=%p\n", gtid,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); } | |||
888 | loc_ref, KMP_TASK_TO_TASKDATA(task)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); }; | |||
889 | ||||
890 | __kmp_task_finish<false>(gtid, task, | |||
891 | NULL__null); // Not sure how to find task to resume | |||
892 | ||||
893 | KA_TRACE(10, ("__kmpc_omp_task_complete(exit): T#%d loc=%p task=%p\n", gtid,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete(exit): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); } | |||
894 | loc_ref, KMP_TASK_TO_TASKDATA(task)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_complete(exit): T#%d loc=%p task=%p\n" , gtid, loc_ref, (((kmp_taskdata_t *)task) - 1)); }; | |||
895 | return; | |||
896 | } | |||
897 | #endif // TASK_UNUSED | |||
898 | ||||
899 | // __kmp_init_implicit_task: Initialize the appropriate fields in the implicit | |||
900 | // task for a given thread | |||
901 | // | |||
902 | // loc_ref: reference to source location of parallel region | |||
903 | // this_thr: thread data structure corresponding to implicit task | |||
904 | // team: team for this_thr | |||
905 | // tid: thread id of given thread within team | |||
906 | // set_curr_task: TRUE if need to push current task to thread | |||
907 | // NOTE: Routine does not set up the implicit task ICVS. This is assumed to | |||
908 | // have already been done elsewhere. | |||
909 | // TODO: Get better loc_ref. Value passed in may be NULL | |||
910 | void __kmp_init_implicit_task(ident_t *loc_ref, kmp_info_t *this_thr, | |||
911 | kmp_team_t *team, int tid, int set_curr_task) { | |||
912 | kmp_taskdata_t *task = &team->t.t_implicit_task_taskdata[tid]; | |||
913 | ||||
914 | KF_TRACE(if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_init_implicit_task(enter): T#:%d team=%p task=%p, reinit=%s\n" , tid, team, task, set_curr_task ? "TRUE" : "FALSE"); } | |||
915 | 10,if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_init_implicit_task(enter): T#:%d team=%p task=%p, reinit=%s\n" , tid, team, task, set_curr_task ? "TRUE" : "FALSE"); } | |||
916 | ("__kmp_init_implicit_task(enter): T#:%d team=%p task=%p, reinit=%s\n",if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_init_implicit_task(enter): T#:%d team=%p task=%p, reinit=%s\n" , tid, team, task, set_curr_task ? "TRUE" : "FALSE"); } | |||
917 | tid, team, task, set_curr_task ? "TRUE" : "FALSE"))if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_init_implicit_task(enter): T#:%d team=%p task=%p, reinit=%s\n" , tid, team, task, set_curr_task ? "TRUE" : "FALSE"); }; | |||
918 | ||||
919 | task->td_task_id = KMP_GEN_TASK_ID()(~0); | |||
920 | task->td_team = team; | |||
921 | // task->td_parent = NULL; // fix for CQ230101 (broken parent task info | |||
922 | // in debugger) | |||
923 | task->td_ident = loc_ref; | |||
924 | task->td_taskwait_ident = NULL__null; | |||
925 | task->td_taskwait_counter = 0; | |||
926 | task->td_taskwait_thread = 0; | |||
927 | ||||
928 | task->td_flags.tiedness = TASK_TIED1; | |||
929 | task->td_flags.tasktype = TASK_IMPLICIT0; | |||
930 | #if OMP_45_ENABLED(50 >= 45) | |||
931 | task->td_flags.proxy = TASK_FULL0; | |||
932 | #endif | |||
933 | ||||
934 | // All implicit tasks are executed immediately, not deferred | |||
935 | task->td_flags.task_serial = 1; | |||
936 | task->td_flags.tasking_ser = (__kmp_tasking_mode == tskm_immediate_exec); | |||
937 | task->td_flags.team_serial = (team->t.t_serialized) ? 1 : 0; | |||
938 | ||||
939 | task->td_flags.started = 1; | |||
940 | task->td_flags.executing = 1; | |||
941 | task->td_flags.complete = 0; | |||
942 | task->td_flags.freed = 0; | |||
943 | ||||
944 | #if OMP_40_ENABLED(50 >= 40) | |||
945 | task->td_depnode = NULL__null; | |||
946 | #endif | |||
947 | task->td_last_tied = task; | |||
948 | ||||
949 | if (set_curr_task) { // only do this init first time thread is created | |||
950 | KMP_ATOMIC_ST_REL(&task->td_incomplete_child_tasks, 0)(&task->td_incomplete_child_tasks)->store(0, std::memory_order_release ); | |||
951 | // Not used: don't need to deallocate implicit task | |||
952 | KMP_ATOMIC_ST_REL(&task->td_allocated_child_tasks, 0)(&task->td_allocated_child_tasks)->store(0, std::memory_order_release ); | |||
953 | #if OMP_40_ENABLED(50 >= 40) | |||
954 | task->td_taskgroup = NULL__null; // An implicit task does not have taskgroup | |||
955 | task->td_dephash = NULL__null; | |||
956 | #endif | |||
957 | __kmp_push_current_task_to_thread(this_thr, team, tid); | |||
958 | } else { | |||
959 | KMP_DEBUG_ASSERT(task->td_incomplete_child_tasks == 0)if (!(task->td_incomplete_child_tasks == 0)) { __kmp_debug_assert ("task->td_incomplete_child_tasks == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 959); }; | |||
960 | KMP_DEBUG_ASSERT(task->td_allocated_child_tasks == 0)if (!(task->td_allocated_child_tasks == 0)) { __kmp_debug_assert ("task->td_allocated_child_tasks == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 960); }; | |||
961 | } | |||
962 | ||||
963 | #if OMPT_SUPPORT1 | |||
964 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) | |||
965 | __ompt_task_init(task, tid); | |||
966 | #endif | |||
967 | ||||
968 | KF_TRACE(10, ("__kmp_init_implicit_task(exit): T#:%d team=%p task=%p\n", tid,if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_init_implicit_task(exit): T#:%d team=%p task=%p\n" , tid, team, task); } | |||
969 | team, task))if (kmp_f_debug >= 10) { __kmp_debug_printf ("__kmp_init_implicit_task(exit): T#:%d team=%p task=%p\n" , tid, team, task); }; | |||
970 | } | |||
971 | ||||
972 | // __kmp_finish_implicit_task: Release resources associated to implicit tasks | |||
973 | // at the end of parallel regions. Some resources are kept for reuse in the next | |||
974 | // parallel region. | |||
975 | // | |||
976 | // thread: thread data structure corresponding to implicit task | |||
977 | void __kmp_finish_implicit_task(kmp_info_t *thread) { | |||
978 | kmp_taskdata_t *task = thread->th.th_current_task; | |||
979 | if (task->td_dephash) | |||
980 | __kmp_dephash_free_entries(thread, task->td_dephash); | |||
981 | } | |||
982 | ||||
983 | // __kmp_free_implicit_task: Release resources associated to implicit tasks | |||
984 | // when these are destroyed regions | |||
985 | // | |||
986 | // thread: thread data structure corresponding to implicit task | |||
987 | void __kmp_free_implicit_task(kmp_info_t *thread) { | |||
988 | kmp_taskdata_t *task = thread->th.th_current_task; | |||
989 | if (task && task->td_dephash) { | |||
990 | __kmp_dephash_free(thread, task->td_dephash); | |||
991 | task->td_dephash = NULL__null; | |||
992 | } | |||
993 | } | |||
994 | ||||
995 | // Round up a size to a power of two specified by val: Used to insert padding | |||
996 | // between structures co-allocated using a single malloc() call | |||
997 | static size_t __kmp_round_up_to_val(size_t size, size_t val) { | |||
998 | if (size & (val - 1)) { | |||
999 | size &= ~(val - 1); | |||
1000 | if (size <= KMP_SIZE_T_MAX(0xFFFFFFFFFFFFFFFF) - val) { | |||
1001 | size += val; // Round up if there is no overflow. | |||
1002 | } | |||
1003 | } | |||
1004 | return size; | |||
1005 | } // __kmp_round_up_to_va | |||
1006 | ||||
1007 | // __kmp_task_alloc: Allocate the taskdata and task data structures for a task | |||
1008 | // | |||
1009 | // loc_ref: source location information | |||
1010 | // gtid: global thread number. | |||
1011 | // flags: include tiedness & task type (explicit vs. implicit) of the ''new'' | |||
1012 | // task encountered. Converted from kmp_int32 to kmp_tasking_flags_t in routine. | |||
1013 | // sizeof_kmp_task_t: Size in bytes of kmp_task_t data structure including | |||
1014 | // private vars accessed in task. | |||
1015 | // sizeof_shareds: Size in bytes of array of pointers to shared vars accessed | |||
1016 | // in task. | |||
1017 | // task_entry: Pointer to task code entry point generated by compiler. | |||
1018 | // returns: a pointer to the allocated kmp_task_t structure (task). | |||
1019 | kmp_task_t *__kmp_task_alloc(ident_t *loc_ref, kmp_int32 gtid, | |||
1020 | kmp_tasking_flags_t *flags, | |||
1021 | size_t sizeof_kmp_task_t, size_t sizeof_shareds, | |||
1022 | kmp_routine_entry_t task_entry) { | |||
1023 | kmp_task_t *task; | |||
1024 | kmp_taskdata_t *taskdata; | |||
1025 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
1026 | kmp_team_t *team = thread->th.th_team; | |||
1027 | kmp_taskdata_t *parent_task = thread->th.th_current_task; | |||
1028 | size_t shareds_offset; | |||
1029 | ||||
1030 | if (!TCR_4(__kmp_init_middle)(__kmp_init_middle)) | |||
1031 | __kmp_middle_initialize(); | |||
1032 | ||||
1033 | KA_TRACE(10, ("__kmp_task_alloc(enter): T#%d loc=%p, flags=(0x%x) "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_alloc(enter): T#%d loc=%p, flags=(0x%x) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , *((kmp_int32 *)flags), sizeof_kmp_task_t, sizeof_shareds, task_entry ); } | |||
1034 | "sizeof_task=%ld sizeof_shared=%ld entry=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_alloc(enter): T#%d loc=%p, flags=(0x%x) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , *((kmp_int32 *)flags), sizeof_kmp_task_t, sizeof_shareds, task_entry ); } | |||
1035 | gtid, loc_ref, *((kmp_int32 *)flags), sizeof_kmp_task_t,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_alloc(enter): T#%d loc=%p, flags=(0x%x) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , *((kmp_int32 *)flags), sizeof_kmp_task_t, sizeof_shareds, task_entry ); } | |||
1036 | sizeof_shareds, task_entry))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_alloc(enter): T#%d loc=%p, flags=(0x%x) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , *((kmp_int32 *)flags), sizeof_kmp_task_t, sizeof_shareds, task_entry ); }; | |||
1037 | ||||
1038 | if (parent_task->td_flags.final) { | |||
1039 | if (flags->merged_if0) { | |||
1040 | } | |||
1041 | flags->final = 1; | |||
1042 | } | |||
1043 | if (flags->tiedness == TASK_UNTIED0 && !team->t.t_serialized) { | |||
1044 | // Untied task encountered causes the TSC algorithm to check entire deque of | |||
1045 | // the victim thread. If no untied task encountered, then checking the head | |||
1046 | // of the deque should be enough. | |||
1047 | KMP_CHECK_UPDATE(thread->th.th_task_team->tt.tt_untied_task_encountered, 1)if ((thread->th.th_task_team->tt.tt_untied_task_encountered ) != (1)) (thread->th.th_task_team->tt.tt_untied_task_encountered ) = (1); | |||
1048 | } | |||
1049 | ||||
1050 | #if OMP_45_ENABLED(50 >= 45) | |||
1051 | if (flags->proxy == TASK_PROXY1) { | |||
1052 | flags->tiedness = TASK_UNTIED0; | |||
1053 | flags->merged_if0 = 1; | |||
1054 | ||||
1055 | /* are we running in a sequential parallel or tskm_immediate_exec... we need | |||
1056 | tasking support enabled */ | |||
1057 | if ((thread->th.th_task_team) == NULL__null) { | |||
1058 | /* This should only happen if the team is serialized | |||
1059 | setup a task team and propagate it to the thread */ | |||
1060 | KMP_DEBUG_ASSERT(team->t.t_serialized)if (!(team->t.t_serialized)) { __kmp_debug_assert("team->t.t_serialized" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1060); }; | |||
1061 | KA_TRACE(30,if (kmp_a_debug >= 30) { __kmp_debug_printf ("T#%d creating task team in __kmp_task_alloc for proxy task\n" , gtid); } | |||
1062 | ("T#%d creating task team in __kmp_task_alloc for proxy task\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("T#%d creating task team in __kmp_task_alloc for proxy task\n" , gtid); } | |||
1063 | gtid))if (kmp_a_debug >= 30) { __kmp_debug_printf ("T#%d creating task team in __kmp_task_alloc for proxy task\n" , gtid); }; | |||
1064 | __kmp_task_team_setup( | |||
1065 | thread, team, | |||
1066 | 1); // 1 indicates setup the current team regardless of nthreads | |||
1067 | thread->th.th_task_team = team->t.t_task_team[thread->th.th_task_state]; | |||
1068 | } | |||
1069 | kmp_task_team_t *task_team = thread->th.th_task_team; | |||
1070 | ||||
1071 | /* tasking must be enabled now as the task might not be pushed */ | |||
1072 | if (!KMP_TASKING_ENABLED(task_team)(((task_team)->tt.tt_found_tasks) == (!0))) { | |||
1073 | KA_TRACE(if (kmp_a_debug >= 30) { __kmp_debug_printf ("T#%d enabling tasking in __kmp_task_alloc for proxy task\n" , gtid); } | |||
1074 | 30,if (kmp_a_debug >= 30) { __kmp_debug_printf ("T#%d enabling tasking in __kmp_task_alloc for proxy task\n" , gtid); } | |||
1075 | ("T#%d enabling tasking in __kmp_task_alloc for proxy task\n", gtid))if (kmp_a_debug >= 30) { __kmp_debug_printf ("T#%d enabling tasking in __kmp_task_alloc for proxy task\n" , gtid); }; | |||
1076 | __kmp_enable_tasking(task_team, thread); | |||
1077 | kmp_int32 tid = thread->th.th_info.ds.ds_tid; | |||
1078 | kmp_thread_data_t *thread_data = &task_team->tt.tt_threads_data[tid]; | |||
1079 | // No lock needed since only owner can allocate | |||
1080 | if (thread_data->td.td_deque == NULL__null) { | |||
1081 | __kmp_alloc_task_deque(thread, thread_data); | |||
1082 | } | |||
1083 | } | |||
1084 | ||||
1085 | if (task_team->tt.tt_found_proxy_tasks == FALSE0) | |||
1086 | TCW_4(task_team->tt.tt_found_proxy_tasks, TRUE)(task_team->tt.tt_found_proxy_tasks) = ((!0)); | |||
1087 | } | |||
1088 | #endif | |||
1089 | ||||
1090 | // Calculate shared structure offset including padding after kmp_task_t struct | |||
1091 | // to align pointers in shared struct | |||
1092 | shareds_offset = sizeof(kmp_taskdata_t) + sizeof_kmp_task_t; | |||
1093 | shareds_offset = __kmp_round_up_to_val(shareds_offset, sizeof(void *)); | |||
1094 | ||||
1095 | // Allocate a kmp_taskdata_t block and a kmp_task_t block. | |||
1096 | KA_TRACE(30, ("__kmp_task_alloc: T#%d First malloc size: %ld\n", gtid,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_task_alloc: T#%d First malloc size: %ld\n" , gtid, shareds_offset); } | |||
1097 | shareds_offset))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_task_alloc: T#%d First malloc size: %ld\n" , gtid, shareds_offset); }; | |||
1098 | KA_TRACE(30, ("__kmp_task_alloc: T#%d Second malloc size: %ld\n", gtid,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_task_alloc: T#%d Second malloc size: %ld\n" , gtid, sizeof_shareds); } | |||
1099 | sizeof_shareds))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_task_alloc: T#%d Second malloc size: %ld\n" , gtid, sizeof_shareds); }; | |||
1100 | ||||
1101 | // Avoid double allocation here by combining shareds with taskdata | |||
1102 | #if USE_FAST_MEMORY3 | |||
1103 | taskdata = (kmp_taskdata_t *)__kmp_fast_allocate(thread, shareds_offset +___kmp_fast_allocate((thread), (shareds_offset + sizeof_shareds ), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1104) | |||
1104 | sizeof_shareds)___kmp_fast_allocate((thread), (shareds_offset + sizeof_shareds ), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1104); | |||
1105 | #else /* ! USE_FAST_MEMORY */ | |||
1106 | taskdata = (kmp_taskdata_t *)__kmp_thread_malloc(thread, shareds_offset +___kmp_thread_malloc((thread), (shareds_offset + sizeof_shareds ), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1107) | |||
1107 | sizeof_shareds)___kmp_thread_malloc((thread), (shareds_offset + sizeof_shareds ), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1107); | |||
1108 | #endif /* USE_FAST_MEMORY */ | |||
1109 | ANNOTATE_HAPPENS_AFTER(taskdata); | |||
1110 | ||||
1111 | task = KMP_TASKDATA_TO_TASK(taskdata)(kmp_task_t *)(taskdata + 1); | |||
1112 | ||||
1113 | // Make sure task & taskdata are aligned appropriately | |||
1114 | #if KMP_ARCH_X860 || KMP_ARCH_PPC64(0 || 0) || !KMP_HAVE_QUAD0 | |||
1115 | KMP_DEBUG_ASSERT((((kmp_uintptr_t)taskdata) & (sizeof(double) - 1)) == 0)if (!((((kmp_uintptr_t)taskdata) & (sizeof(double) - 1)) == 0)) { __kmp_debug_assert("(((kmp_uintptr_t)taskdata) & (sizeof(double) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1115); }; | |||
1116 | KMP_DEBUG_ASSERT((((kmp_uintptr_t)task) & (sizeof(double) - 1)) == 0)if (!((((kmp_uintptr_t)task) & (sizeof(double) - 1)) == 0 )) { __kmp_debug_assert("(((kmp_uintptr_t)task) & (sizeof(double) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1116); }; | |||
1117 | #else | |||
1118 | KMP_DEBUG_ASSERT((((kmp_uintptr_t)taskdata) & (sizeof(_Quad) - 1)) == 0)if (!((((kmp_uintptr_t)taskdata) & (sizeof(_Quad) - 1)) == 0)) { __kmp_debug_assert("(((kmp_uintptr_t)taskdata) & (sizeof(_Quad) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1118); }; | |||
1119 | KMP_DEBUG_ASSERT((((kmp_uintptr_t)task) & (sizeof(_Quad) - 1)) == 0)if (!((((kmp_uintptr_t)task) & (sizeof(_Quad) - 1)) == 0) ) { __kmp_debug_assert("(((kmp_uintptr_t)task) & (sizeof(_Quad) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1119); }; | |||
1120 | #endif | |||
1121 | if (sizeof_shareds > 0) { | |||
1122 | // Avoid double allocation here by combining shareds with taskdata | |||
1123 | task->shareds = &((char *)taskdata)[shareds_offset]; | |||
1124 | // Make sure shareds struct is aligned to pointer size | |||
1125 | KMP_DEBUG_ASSERT((((kmp_uintptr_t)task->shareds) & (sizeof(void *) - 1)) ==if (!((((kmp_uintptr_t)task->shareds) & (sizeof(void * ) - 1)) == 0)) { __kmp_debug_assert("(((kmp_uintptr_t)task->shareds) & (sizeof(void *) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1126); } | |||
1126 | 0)if (!((((kmp_uintptr_t)task->shareds) & (sizeof(void * ) - 1)) == 0)) { __kmp_debug_assert("(((kmp_uintptr_t)task->shareds) & (sizeof(void *) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1126); }; | |||
1127 | } else { | |||
1128 | task->shareds = NULL__null; | |||
1129 | } | |||
1130 | task->routine = task_entry; | |||
1131 | task->part_id = 0; // AC: Always start with 0 part id | |||
1132 | ||||
1133 | taskdata->td_task_id = KMP_GEN_TASK_ID()(~0); | |||
1134 | taskdata->td_team = team; | |||
1135 | taskdata->td_alloc_thread = thread; | |||
1136 | taskdata->td_parent = parent_task; | |||
1137 | taskdata->td_level = parent_task->td_level + 1; // increment nesting level | |||
1138 | KMP_ATOMIC_ST_RLX(&taskdata->td_untied_count, 0)(&taskdata->td_untied_count)->store(0, std::memory_order_relaxed ); | |||
1139 | taskdata->td_ident = loc_ref; | |||
1140 | taskdata->td_taskwait_ident = NULL__null; | |||
1141 | taskdata->td_taskwait_counter = 0; | |||
1142 | taskdata->td_taskwait_thread = 0; | |||
1143 | KMP_DEBUG_ASSERT(taskdata->td_parent != NULL)if (!(taskdata->td_parent != __null)) { __kmp_debug_assert ("taskdata->td_parent != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1143); }; | |||
1144 | #if OMP_45_ENABLED(50 >= 45) | |||
1145 | // avoid copying icvs for proxy tasks | |||
1146 | if (flags->proxy == TASK_FULL0) | |||
1147 | #endif | |||
1148 | copy_icvs(&taskdata->td_icvs, &taskdata->td_parent->td_icvs); | |||
1149 | ||||
1150 | taskdata->td_flags.tiedness = flags->tiedness; | |||
1151 | taskdata->td_flags.final = flags->final; | |||
1152 | taskdata->td_flags.merged_if0 = flags->merged_if0; | |||
1153 | #if OMP_40_ENABLED(50 >= 40) | |||
1154 | taskdata->td_flags.destructors_thunk = flags->destructors_thunk; | |||
1155 | #endif // OMP_40_ENABLED | |||
1156 | #if OMP_45_ENABLED(50 >= 45) | |||
1157 | taskdata->td_flags.proxy = flags->proxy; | |||
1158 | taskdata->td_task_team = thread->th.th_task_team; | |||
1159 | taskdata->td_size_alloc = shareds_offset + sizeof_shareds; | |||
1160 | #endif | |||
1161 | taskdata->td_flags.tasktype = TASK_EXPLICIT1; | |||
1162 | ||||
1163 | // GEH - TODO: fix this to copy parent task's value of tasking_ser flag | |||
1164 | taskdata->td_flags.tasking_ser = (__kmp_tasking_mode == tskm_immediate_exec); | |||
1165 | ||||
1166 | // GEH - TODO: fix this to copy parent task's value of team_serial flag | |||
1167 | taskdata->td_flags.team_serial = (team->t.t_serialized) ? 1 : 0; | |||
1168 | ||||
1169 | // GEH - Note we serialize the task if the team is serialized to make sure | |||
1170 | // implicit parallel region tasks are not left until program termination to | |||
1171 | // execute. Also, it helps locality to execute immediately. | |||
1172 | ||||
1173 | taskdata->td_flags.task_serial = | |||
1174 | (parent_task->td_flags.final || taskdata->td_flags.team_serial || | |||
1175 | taskdata->td_flags.tasking_ser); | |||
1176 | ||||
1177 | taskdata->td_flags.started = 0; | |||
1178 | taskdata->td_flags.executing = 0; | |||
1179 | taskdata->td_flags.complete = 0; | |||
1180 | taskdata->td_flags.freed = 0; | |||
1181 | ||||
1182 | taskdata->td_flags.native = flags->native; | |||
1183 | ||||
1184 | KMP_ATOMIC_ST_RLX(&taskdata->td_incomplete_child_tasks, 0)(&taskdata->td_incomplete_child_tasks)->store(0, std ::memory_order_relaxed); | |||
1185 | // start at one because counts current task and children | |||
1186 | KMP_ATOMIC_ST_RLX(&taskdata->td_allocated_child_tasks, 1)(&taskdata->td_allocated_child_tasks)->store(1, std ::memory_order_relaxed); | |||
1187 | #if OMP_40_ENABLED(50 >= 40) | |||
1188 | taskdata->td_taskgroup = | |||
1189 | parent_task->td_taskgroup; // task inherits taskgroup from the parent task | |||
1190 | taskdata->td_dephash = NULL__null; | |||
1191 | taskdata->td_depnode = NULL__null; | |||
1192 | #endif | |||
1193 | if (flags->tiedness == TASK_UNTIED0) | |||
1194 | taskdata->td_last_tied = NULL__null; // will be set when the task is scheduled | |||
1195 | else | |||
1196 | taskdata->td_last_tied = taskdata; | |||
1197 | ||||
1198 | #if OMPT_SUPPORT1 | |||
1199 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) | |||
1200 | __ompt_task_init(taskdata, gtid); | |||
1201 | #endif | |||
1202 | // Only need to keep track of child task counts if team parallel and tasking not | |||
1203 | // serialized or if it is a proxy task | |||
1204 | #if OMP_45_ENABLED(50 >= 45) | |||
1205 | if (flags->proxy == TASK_PROXY1 || | |||
1206 | !(taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser)) | |||
1207 | #else | |||
1208 | if (!(taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser)) | |||
1209 | #endif | |||
1210 | { | |||
1211 | KMP_ATOMIC_INC(&parent_task->td_incomplete_child_tasks)(&parent_task->td_incomplete_child_tasks)->fetch_add (1, std::memory_order_acq_rel); | |||
1212 | #if OMP_40_ENABLED(50 >= 40) | |||
1213 | if (parent_task->td_taskgroup) | |||
1214 | KMP_ATOMIC_INC(&parent_task->td_taskgroup->count)(&parent_task->td_taskgroup->count)->fetch_add(1 , std::memory_order_acq_rel); | |||
1215 | #endif | |||
1216 | // Only need to keep track of allocated child tasks for explicit tasks since | |||
1217 | // implicit not deallocated | |||
1218 | if (taskdata->td_parent->td_flags.tasktype == TASK_EXPLICIT1) { | |||
1219 | KMP_ATOMIC_INC(&taskdata->td_parent->td_allocated_child_tasks)(&taskdata->td_parent->td_allocated_child_tasks)-> fetch_add(1, std::memory_order_acq_rel); | |||
1220 | } | |||
1221 | } | |||
1222 | ||||
1223 | KA_TRACE(20, ("__kmp_task_alloc(exit): T#%d created task %p parent=%p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_alloc(exit): T#%d created task %p parent=%p\n" , gtid, taskdata, taskdata->td_parent); } | |||
1224 | gtid, taskdata, taskdata->td_parent))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_alloc(exit): T#%d created task %p parent=%p\n" , gtid, taskdata, taskdata->td_parent); }; | |||
1225 | ANNOTATE_HAPPENS_BEFORE(task); | |||
1226 | ||||
1227 | return task; | |||
1228 | } | |||
1229 | ||||
1230 | kmp_task_t *__kmpc_omp_task_alloc(ident_t *loc_ref, kmp_int32 gtid, | |||
1231 | kmp_int32 flags, size_t sizeof_kmp_task_t, | |||
1232 | size_t sizeof_shareds, | |||
1233 | kmp_routine_entry_t task_entry) { | |||
1234 | kmp_task_t *retval; | |||
1235 | kmp_tasking_flags_t *input_flags = (kmp_tasking_flags_t *)&flags; | |||
1236 | ||||
1237 | input_flags->native = FALSE0; | |||
1238 | // __kmp_task_alloc() sets up all other runtime flags | |||
1239 | ||||
1240 | #if OMP_45_ENABLED(50 >= 45) | |||
1241 | KA_TRACE(10, ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s %s) "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s %s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", input_flags ->proxy ? "proxy" : "", sizeof_kmp_task_t, sizeof_shareds, task_entry); } | |||
1242 | "sizeof_task=%ld sizeof_shared=%ld entry=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s %s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", input_flags ->proxy ? "proxy" : "", sizeof_kmp_task_t, sizeof_shareds, task_entry); } | |||
1243 | gtid, loc_ref, input_flags->tiedness ? "tied " : "untied",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s %s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", input_flags ->proxy ? "proxy" : "", sizeof_kmp_task_t, sizeof_shareds, task_entry); } | |||
1244 | input_flags->proxy ? "proxy" : "", sizeof_kmp_task_t,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s %s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", input_flags ->proxy ? "proxy" : "", sizeof_kmp_task_t, sizeof_shareds, task_entry); } | |||
1245 | sizeof_shareds, task_entry))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s %s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", input_flags ->proxy ? "proxy" : "", sizeof_kmp_task_t, sizeof_shareds, task_entry); }; | |||
1246 | #else | |||
1247 | KA_TRACE(10, ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s) "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", sizeof_kmp_task_t , sizeof_shareds, task_entry); } | |||
1248 | "sizeof_task=%ld sizeof_shared=%ld entry=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", sizeof_kmp_task_t , sizeof_shareds, task_entry); } | |||
1249 | gtid, loc_ref, input_flags->tiedness ? "tied " : "untied",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", sizeof_kmp_task_t , sizeof_shareds, task_entry); } | |||
1250 | sizeof_kmp_task_t, sizeof_shareds, task_entry))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_alloc(enter): T#%d loc=%p, flags=(%s) " "sizeof_task=%ld sizeof_shared=%ld entry=%p\n", gtid, loc_ref , input_flags->tiedness ? "tied " : "untied", sizeof_kmp_task_t , sizeof_shareds, task_entry); }; | |||
1251 | #endif | |||
1252 | ||||
1253 | retval = __kmp_task_alloc(loc_ref, gtid, input_flags, sizeof_kmp_task_t, | |||
1254 | sizeof_shareds, task_entry); | |||
1255 | ||||
1256 | KA_TRACE(20, ("__kmpc_omp_task_alloc(exit): T#%d retval %p\n", gtid, retval))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_omp_task_alloc(exit): T#%d retval %p\n" , gtid, retval); }; | |||
1257 | ||||
1258 | return retval; | |||
1259 | } | |||
1260 | ||||
1261 | // __kmp_invoke_task: invoke the specified task | |||
1262 | // | |||
1263 | // gtid: global thread ID of caller | |||
1264 | // task: the task to invoke | |||
1265 | // current_task: the task to resume after task invokation | |||
1266 | static void __kmp_invoke_task(kmp_int32 gtid, kmp_task_t *task, | |||
1267 | kmp_taskdata_t *current_task) { | |||
1268 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
1269 | kmp_info_t *thread; | |||
1270 | #if OMP_40_ENABLED(50 >= 40) | |||
1271 | int discard = 0 /* false */; | |||
1272 | #endif | |||
1273 | KA_TRACE(if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(enter): T#%d invoking task %p, current_task=%p\n" , gtid, taskdata, current_task); } | |||
1274 | 30, ("__kmp_invoke_task(enter): T#%d invoking task %p, current_task=%p\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(enter): T#%d invoking task %p, current_task=%p\n" , gtid, taskdata, current_task); } | |||
1275 | gtid, taskdata, current_task))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(enter): T#%d invoking task %p, current_task=%p\n" , gtid, taskdata, current_task); }; | |||
1276 | KMP_DEBUG_ASSERT(task)if (!(task)) { __kmp_debug_assert("task", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1276); }; | |||
1277 | #if OMP_45_ENABLED(50 >= 45) | |||
1278 | if (taskdata->td_flags.proxy == TASK_PROXY1 && | |||
1279 | taskdata->td_flags.complete == 1) { | |||
1280 | // This is a proxy task that was already completed but it needs to run | |||
1281 | // its bottom-half finish | |||
1282 | KA_TRACE(if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task: T#%d running bottom finish for proxy task %p\n" , gtid, taskdata); } | |||
1283 | 30,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task: T#%d running bottom finish for proxy task %p\n" , gtid, taskdata); } | |||
1284 | ("__kmp_invoke_task: T#%d running bottom finish for proxy task %p\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task: T#%d running bottom finish for proxy task %p\n" , gtid, taskdata); } | |||
1285 | gtid, taskdata))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task: T#%d running bottom finish for proxy task %p\n" , gtid, taskdata); }; | |||
1286 | ||||
1287 | __kmp_bottom_half_finish_proxy(gtid, task); | |||
1288 | ||||
1289 | KA_TRACE(30, ("__kmp_invoke_task(exit): T#%d completed bottom finish for "if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(exit): T#%d completed bottom finish for " "proxy task %p, resuming task %p\n", gtid, taskdata, current_task ); } | |||
1290 | "proxy task %p, resuming task %p\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(exit): T#%d completed bottom finish for " "proxy task %p, resuming task %p\n", gtid, taskdata, current_task ); } | |||
1291 | gtid, taskdata, current_task))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(exit): T#%d completed bottom finish for " "proxy task %p, resuming task %p\n", gtid, taskdata, current_task ); }; | |||
1292 | ||||
1293 | return; | |||
1294 | } | |||
1295 | #endif | |||
1296 | ||||
1297 | #if OMPT_SUPPORT1 | |||
1298 | // For untied tasks, the first task executed only calls __kmpc_omp_task and | |||
1299 | // does not execute code. | |||
1300 | ompt_thread_info_t oldInfo; | |||
1301 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
1302 | // Store the threads states and restore them after the task | |||
1303 | thread = __kmp_threads[gtid]; | |||
1304 | oldInfo = thread->th.ompt_thread_info; | |||
1305 | thread->th.ompt_thread_info.wait_id = 0; | |||
1306 | thread->th.ompt_thread_info.state = (thread->th.th_team_serialized) | |||
1307 | ? omp_state_work_serial | |||
1308 | : omp_state_work_parallel; | |||
1309 | taskdata->ompt_task_info.frame.exit_frame = OMPT_GET_FRAME_ADDRESS(0)__builtin_frame_address(0); | |||
1310 | } | |||
1311 | #endif | |||
1312 | ||||
1313 | #if OMP_45_ENABLED(50 >= 45) | |||
1314 | // Proxy tasks are not handled by the runtime | |||
1315 | if (taskdata->td_flags.proxy != TASK_PROXY1) { | |||
1316 | #endif | |||
1317 | ANNOTATE_HAPPENS_AFTER(task); | |||
1318 | __kmp_task_start(gtid, task, current_task); // OMPT only if not discarded | |||
1319 | #if OMP_45_ENABLED(50 >= 45) | |||
1320 | } | |||
1321 | #endif | |||
1322 | ||||
1323 | #if OMP_40_ENABLED(50 >= 40) | |||
1324 | // TODO: cancel tasks if the parallel region has also been cancelled | |||
1325 | // TODO: check if this sequence can be hoisted above __kmp_task_start | |||
1326 | // if cancellation has been enabled for this run ... | |||
1327 | if (__kmp_omp_cancellation) { | |||
1328 | thread = __kmp_threads[gtid]; | |||
1329 | kmp_team_t *this_team = thread->th.th_team; | |||
1330 | kmp_taskgroup_t *taskgroup = taskdata->td_taskgroup; | |||
1331 | if ((taskgroup && taskgroup->cancel_request) || | |||
1332 | (this_team->t.t_cancel_request == cancel_parallel)) { | |||
1333 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
1334 | ompt_data_t *task_data; | |||
1335 | if (UNLIKELY(ompt_enabled.ompt_callback_cancel)__builtin_expect(!!(ompt_enabled.ompt_callback_cancel), 0)) { | |||
1336 | __ompt_get_task_info_internal(0, NULL__null, &task_data, NULL__null, NULL__null, NULL__null); | |||
1337 | ompt_callbacks.ompt_callback(ompt_callback_cancel)ompt_callback_cancel_callback( | |||
1338 | task_data, | |||
1339 | ((taskgroup && taskgroup->cancel_request) ? ompt_cancel_taskgroup | |||
1340 | : ompt_cancel_parallel) | | |||
1341 | ompt_cancel_discarded_task, | |||
1342 | NULL__null); | |||
1343 | } | |||
1344 | #endif | |||
1345 | KMP_COUNT_BLOCK(TASK_cancelled)((void)0); | |||
1346 | // this task belongs to a task group and we need to cancel it | |||
1347 | discard = 1 /* true */; | |||
1348 | } | |||
1349 | } | |||
1350 | ||||
1351 | // Invoke the task routine and pass in relevant data. | |||
1352 | // Thunks generated by gcc take a different argument list. | |||
1353 | if (!discard) { | |||
1354 | if (taskdata->td_flags.tiedness == TASK_UNTIED0) { | |||
1355 | taskdata->td_last_tied = current_task->td_last_tied; | |||
1356 | KMP_DEBUG_ASSERT(taskdata->td_last_tied)if (!(taskdata->td_last_tied)) { __kmp_debug_assert("taskdata->td_last_tied" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1356); }; | |||
1357 | } | |||
1358 | #if KMP_STATS_ENABLED0 | |||
1359 | KMP_COUNT_BLOCK(TASK_executed)((void)0); | |||
1360 | switch (KMP_GET_THREAD_STATE()((void)0)) { | |||
1361 | case FORK_JOIN_BARRIER: | |||
1362 | KMP_PUSH_PARTITIONED_TIMER(OMP_task_join_bar)((void)0); | |||
1363 | break; | |||
1364 | case PLAIN_BARRIER: | |||
1365 | KMP_PUSH_PARTITIONED_TIMER(OMP_task_plain_bar)((void)0); | |||
1366 | break; | |||
1367 | case TASKYIELD: | |||
1368 | KMP_PUSH_PARTITIONED_TIMER(OMP_task_taskyield)((void)0); | |||
1369 | break; | |||
1370 | case TASKWAIT: | |||
1371 | KMP_PUSH_PARTITIONED_TIMER(OMP_task_taskwait)((void)0); | |||
1372 | break; | |||
1373 | case TASKGROUP: | |||
1374 | KMP_PUSH_PARTITIONED_TIMER(OMP_task_taskgroup)((void)0); | |||
1375 | break; | |||
1376 | default: | |||
1377 | KMP_PUSH_PARTITIONED_TIMER(OMP_task_immediate)((void)0); | |||
1378 | break; | |||
1379 | } | |||
1380 | #endif // KMP_STATS_ENABLED | |||
1381 | #endif // OMP_40_ENABLED | |||
1382 | ||||
1383 | // OMPT task begin | |||
1384 | #if OMPT_SUPPORT1 | |||
1385 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) | |||
1386 | __ompt_task_start(task, current_task, gtid); | |||
1387 | #endif | |||
1388 | ||||
1389 | #if USE_ITT_BUILD1 && USE_ITT_NOTIFY1 | |||
1390 | kmp_uint64 cur_time; | |||
1391 | kmp_int32 kmp_itt_count_task = | |||
1392 | __kmp_forkjoin_frames_mode == 3 && !taskdata->td_flags.task_serial && | |||
1393 | current_task->td_flags.tasktype == TASK_IMPLICIT0; | |||
1394 | if (kmp_itt_count_task) { | |||
1395 | thread = __kmp_threads[gtid]; | |||
1396 | // Time outer level explicit task on barrier for adjusting imbalance time | |||
1397 | if (thread->th.th_bar_arrive_time) | |||
1398 | cur_time = __itt_get_timestamp(!__kmp_itt_get_timestamp_ptr__3_0) ? 0 : __kmp_itt_get_timestamp_ptr__3_0(); | |||
1399 | else | |||
1400 | kmp_itt_count_task = 0; // thread is not on a barrier - skip timing | |||
1401 | } | |||
1402 | #endif | |||
1403 | ||||
1404 | #ifdef KMP_GOMP_COMPAT | |||
1405 | if (taskdata->td_flags.native) { | |||
1406 | ((void (*)(void *))(*(task->routine)))(task->shareds); | |||
1407 | } else | |||
1408 | #endif /* KMP_GOMP_COMPAT */ | |||
1409 | { | |||
1410 | (*(task->routine))(gtid, task); | |||
1411 | } | |||
1412 | KMP_POP_PARTITIONED_TIMER()((void)0); | |||
1413 | ||||
1414 | #if USE_ITT_BUILD1 && USE_ITT_NOTIFY1 | |||
1415 | if (kmp_itt_count_task) { | |||
1416 | // Barrier imbalance - adjust arrive time with the task duration | |||
1417 | thread->th.th_bar_arrive_time += (__itt_get_timestamp(!__kmp_itt_get_timestamp_ptr__3_0) ? 0 : __kmp_itt_get_timestamp_ptr__3_0() - cur_time); | |||
1418 | } | |||
1419 | #endif | |||
1420 | ||||
1421 | #if OMP_40_ENABLED(50 >= 40) | |||
1422 | } | |||
1423 | #endif // OMP_40_ENABLED | |||
1424 | ||||
1425 | ||||
1426 | #if OMP_45_ENABLED(50 >= 45) | |||
1427 | // Proxy tasks are not handled by the runtime | |||
1428 | if (taskdata->td_flags.proxy != TASK_PROXY1) { | |||
1429 | #endif | |||
1430 | ANNOTATE_HAPPENS_BEFORE(taskdata->td_parent); | |||
1431 | #if OMPT_SUPPORT1 | |||
1432 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
1433 | thread->th.ompt_thread_info = oldInfo; | |||
1434 | if (taskdata->td_flags.tiedness == TASK_TIED1) { | |||
1435 | taskdata->ompt_task_info.frame.exit_frame = NULL__null; | |||
1436 | } | |||
1437 | __kmp_task_finish<true>(gtid, task, current_task); | |||
1438 | } else | |||
1439 | #endif | |||
1440 | __kmp_task_finish<false>(gtid, task, current_task); | |||
1441 | #if OMP_45_ENABLED(50 >= 45) | |||
1442 | } | |||
1443 | #endif | |||
1444 | ||||
1445 | KA_TRACE(if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(exit): T#%d completed task %p, resuming task %p\n" , gtid, taskdata, current_task); } | |||
1446 | 30,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(exit): T#%d completed task %p, resuming task %p\n" , gtid, taskdata, current_task); } | |||
1447 | ("__kmp_invoke_task(exit): T#%d completed task %p, resuming task %p\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(exit): T#%d completed task %p, resuming task %p\n" , gtid, taskdata, current_task); } | |||
1448 | gtid, taskdata, current_task))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_invoke_task(exit): T#%d completed task %p, resuming task %p\n" , gtid, taskdata, current_task); }; | |||
1449 | return; | |||
1450 | } | |||
1451 | ||||
1452 | // __kmpc_omp_task_parts: Schedule a thread-switchable task for execution | |||
1453 | // | |||
1454 | // loc_ref: location of original task pragma (ignored) | |||
1455 | // gtid: Global Thread ID of encountering thread | |||
1456 | // new_task: task thunk allocated by __kmp_omp_task_alloc() for the ''new task'' | |||
1457 | // Returns: | |||
1458 | // TASK_CURRENT_NOT_QUEUED (0) if did not suspend and queue current task to | |||
1459 | // be resumed later. | |||
1460 | // TASK_CURRENT_QUEUED (1) if suspended and queued the current task to be | |||
1461 | // resumed later. | |||
1462 | kmp_int32 __kmpc_omp_task_parts(ident_t *loc_ref, kmp_int32 gtid, | |||
1463 | kmp_task_t *new_task) { | |||
1464 | kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task)(((kmp_taskdata_t *)new_task) - 1); | |||
1465 | ||||
1466 | KA_TRACE(10, ("__kmpc_omp_task_parts(enter): T#%d loc=%p task=%p\n", gtid,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_parts(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, new_taskdata); } | |||
1467 | loc_ref, new_taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_parts(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, new_taskdata); }; | |||
1468 | ||||
1469 | #if OMPT_SUPPORT1 | |||
1470 | kmp_taskdata_t *parent; | |||
1471 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
1472 | parent = new_taskdata->td_parent; | |||
1473 | if (ompt_enabled.ompt_callback_task_create) { | |||
1474 | ompt_data_t task_data = ompt_data_none; | |||
1475 | ompt_callbacks.ompt_callback(ompt_callback_task_create)ompt_callback_task_create_callback( | |||
1476 | parent ? &(parent->ompt_task_info.task_data) : &task_data, | |||
1477 | parent ? &(parent->ompt_task_info.frame) : NULL__null, | |||
1478 | &(new_taskdata->ompt_task_info.task_data), ompt_task_explicit, 0, | |||
1479 | OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0)); | |||
1480 | } | |||
1481 | } | |||
1482 | #endif | |||
1483 | ||||
1484 | /* Should we execute the new task or queue it? For now, let's just always try | |||
1485 | to queue it. If the queue fills up, then we'll execute it. */ | |||
1486 | ||||
1487 | if (__kmp_push_task(gtid, new_task) == TASK_NOT_PUSHED1) // if cannot defer | |||
1488 | { // Execute this task immediately | |||
1489 | kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task; | |||
1490 | new_taskdata->td_flags.task_serial = 1; | |||
1491 | __kmp_invoke_task(gtid, new_task, current_task); | |||
1492 | } | |||
1493 | ||||
1494 | KA_TRACE(if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_parts(exit): T#%d returning TASK_CURRENT_NOT_QUEUED: " "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n", gtid, loc_ref , new_taskdata); } | |||
1495 | 10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_parts(exit): T#%d returning TASK_CURRENT_NOT_QUEUED: " "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n", gtid, loc_ref , new_taskdata); } | |||
1496 | ("__kmpc_omp_task_parts(exit): T#%d returning TASK_CURRENT_NOT_QUEUED: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_parts(exit): T#%d returning TASK_CURRENT_NOT_QUEUED: " "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n", gtid, loc_ref , new_taskdata); } | |||
1497 | "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_parts(exit): T#%d returning TASK_CURRENT_NOT_QUEUED: " "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n", gtid, loc_ref , new_taskdata); } | |||
1498 | gtid, loc_ref, new_taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task_parts(exit): T#%d returning TASK_CURRENT_NOT_QUEUED: " "loc=%p task=%p, return: TASK_CURRENT_NOT_QUEUED\n", gtid, loc_ref , new_taskdata); }; | |||
1499 | ||||
1500 | ANNOTATE_HAPPENS_BEFORE(new_task); | |||
1501 | #if OMPT_SUPPORT1 | |||
1502 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
1503 | parent->ompt_task_info.frame.enter_frame = NULL__null; | |||
1504 | } | |||
1505 | #endif | |||
1506 | return TASK_CURRENT_NOT_QUEUED0; | |||
1507 | } | |||
1508 | ||||
1509 | // __kmp_omp_task: Schedule a non-thread-switchable task for execution | |||
1510 | // | |||
1511 | // gtid: Global Thread ID of encountering thread | |||
1512 | // new_task:non-thread-switchable task thunk allocated by __kmp_omp_task_alloc() | |||
1513 | // serialize_immediate: if TRUE then if the task is executed immediately its | |||
1514 | // execution will be serialized | |||
1515 | // Returns: | |||
1516 | // TASK_CURRENT_NOT_QUEUED (0) if did not suspend and queue current task to | |||
1517 | // be resumed later. | |||
1518 | // TASK_CURRENT_QUEUED (1) if suspended and queued the current task to be | |||
1519 | // resumed later. | |||
1520 | kmp_int32 __kmp_omp_task(kmp_int32 gtid, kmp_task_t *new_task, | |||
1521 | bool serialize_immediate) { | |||
1522 | kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task)(((kmp_taskdata_t *)new_task) - 1); | |||
1523 | ||||
1524 | /* Should we execute the new task or queue it? For now, let's just always try to | |||
1525 | queue it. If the queue fills up, then we'll execute it. */ | |||
1526 | #if OMP_45_ENABLED(50 >= 45) | |||
1527 | if (new_taskdata->td_flags.proxy == TASK_PROXY1 || | |||
1528 | __kmp_push_task(gtid, new_task) == TASK_NOT_PUSHED1) // if cannot defer | |||
1529 | #else | |||
1530 | if (__kmp_push_task(gtid, new_task) == TASK_NOT_PUSHED1) // if cannot defer | |||
1531 | #endif | |||
1532 | { // Execute this task immediately | |||
1533 | kmp_taskdata_t *current_task = __kmp_threads[gtid]->th.th_current_task; | |||
1534 | if (serialize_immediate) | |||
1535 | new_taskdata->td_flags.task_serial = 1; | |||
1536 | __kmp_invoke_task(gtid, new_task, current_task); | |||
1537 | } | |||
1538 | ||||
1539 | ANNOTATE_HAPPENS_BEFORE(new_task); | |||
1540 | return TASK_CURRENT_NOT_QUEUED0; | |||
1541 | } | |||
1542 | ||||
1543 | // __kmpc_omp_task: Wrapper around __kmp_omp_task to schedule a | |||
1544 | // non-thread-switchable task from the parent thread only! | |||
1545 | // | |||
1546 | // loc_ref: location of original task pragma (ignored) | |||
1547 | // gtid: Global Thread ID of encountering thread | |||
1548 | // new_task: non-thread-switchable task thunk allocated by | |||
1549 | // __kmp_omp_task_alloc() | |||
1550 | // Returns: | |||
1551 | // TASK_CURRENT_NOT_QUEUED (0) if did not suspend and queue current task to | |||
1552 | // be resumed later. | |||
1553 | // TASK_CURRENT_QUEUED (1) if suspended and queued the current task to be | |||
1554 | // resumed later. | |||
1555 | kmp_int32 __kmpc_omp_task(ident_t *loc_ref, kmp_int32 gtid, | |||
1556 | kmp_task_t *new_task) { | |||
1557 | kmp_int32 res; | |||
1558 | KMP_SET_THREAD_STATE_BLOCK(EXPLICIT_TASK)((void)0); | |||
1559 | ||||
1560 | #if KMP_DEBUG1 || OMPT_SUPPORT1 | |||
1561 | kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task)(((kmp_taskdata_t *)new_task) - 1); | |||
1562 | #endif | |||
1563 | KA_TRACE(10, ("__kmpc_omp_task(enter): T#%d loc=%p task=%p\n", gtid, loc_ref,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, new_taskdata); } | |||
1564 | new_taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, new_taskdata); }; | |||
1565 | ||||
1566 | #if OMPT_SUPPORT1 | |||
1567 | kmp_taskdata_t *parent = NULL__null; | |||
1568 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
1569 | if (!new_taskdata->td_flags.started) { | |||
1570 | OMPT_STORE_RETURN_ADDRESS(gtid)if (ompt_enabled.enabled && gtid >= 0 && __kmp_threads [gtid] && !__kmp_threads[gtid]->th.ompt_thread_info .return_address) __kmp_threads[gtid]->th.ompt_thread_info. return_address = __builtin_return_address(0); | |||
1571 | parent = new_taskdata->td_parent; | |||
1572 | if (!parent->ompt_task_info.frame.enter_frame) { | |||
1573 | parent->ompt_task_info.frame.enter_frame = OMPT_GET_FRAME_ADDRESS(1)__builtin_frame_address(1); | |||
1574 | } | |||
1575 | if (ompt_enabled.ompt_callback_task_create) { | |||
1576 | ompt_data_t task_data = ompt_data_none; | |||
1577 | ompt_callbacks.ompt_callback(ompt_callback_task_create)ompt_callback_task_create_callback( | |||
1578 | parent ? &(parent->ompt_task_info.task_data) : &task_data, | |||
1579 | parent ? &(parent->ompt_task_info.frame) : NULL__null, | |||
1580 | &(new_taskdata->ompt_task_info.task_data), | |||
1581 | ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(new_taskdata)((new_taskdata->td_flags.task_serial || new_taskdata->td_flags .tasking_ser) ? ompt_task_undeferred : 0x0) | ((!(new_taskdata ->td_flags.tiedness)) ? ompt_task_untied : 0x0) | (new_taskdata ->td_flags.final ? ompt_task_final : 0x0) | (new_taskdata-> td_flags.merged_if0 ? ompt_task_mergeable : 0x0), 0, | |||
1582 | OMPT_LOAD_RETURN_ADDRESS(gtid)__ompt_load_return_address(gtid)); | |||
1583 | } | |||
1584 | } else { | |||
1585 | // We are scheduling the continuation of an UNTIED task. | |||
1586 | // Scheduling back to the parent task. | |||
1587 | __ompt_task_finish(new_task, | |||
1588 | new_taskdata->ompt_task_info.scheduling_parent, | |||
1589 | ompt_task_switch); | |||
1590 | new_taskdata->ompt_task_info.frame.exit_frame = NULL__null; | |||
1591 | } | |||
1592 | } | |||
1593 | #endif | |||
1594 | ||||
1595 | res = __kmp_omp_task(gtid, new_task, true); | |||
1596 | ||||
1597 | KA_TRACE(10, ("__kmpc_omp_task(exit): T#%d returning "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(exit): T#%d returning " "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n", gtid, loc_ref, new_taskdata ); } | |||
1598 | "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(exit): T#%d returning " "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n", gtid, loc_ref, new_taskdata ); } | |||
1599 | gtid, loc_ref, new_taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(exit): T#%d returning " "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n", gtid, loc_ref, new_taskdata ); }; | |||
1600 | #if OMPT_SUPPORT1 | |||
1601 | if (UNLIKELY(ompt_enabled.enabled && parent != NULL)__builtin_expect(!!(ompt_enabled.enabled && parent != __null), 0)) { | |||
1602 | parent->ompt_task_info.frame.enter_frame = NULL__null; | |||
1603 | } | |||
1604 | #endif | |||
1605 | return res; | |||
1606 | } | |||
1607 | ||||
1608 | // __kmp_omp_taskloop_task: Wrapper around __kmp_omp_task to schedule | |||
1609 | // a taskloop task with the correct OMPT return address | |||
1610 | // | |||
1611 | // loc_ref: location of original task pragma (ignored) | |||
1612 | // gtid: Global Thread ID of encountering thread | |||
1613 | // new_task: non-thread-switchable task thunk allocated by | |||
1614 | // __kmp_omp_task_alloc() | |||
1615 | // codeptr_ra: return address for OMPT callback | |||
1616 | // Returns: | |||
1617 | // TASK_CURRENT_NOT_QUEUED (0) if did not suspend and queue current task to | |||
1618 | // be resumed later. | |||
1619 | // TASK_CURRENT_QUEUED (1) if suspended and queued the current task to be | |||
1620 | // resumed later. | |||
1621 | kmp_int32 __kmp_omp_taskloop_task(ident_t *loc_ref, kmp_int32 gtid, | |||
1622 | kmp_task_t *new_task, void *codeptr_ra) { | |||
1623 | kmp_int32 res; | |||
1624 | KMP_SET_THREAD_STATE_BLOCK(EXPLICIT_TASK)((void)0); | |||
1625 | ||||
1626 | #if KMP_DEBUG1 || OMPT_SUPPORT1 | |||
1627 | kmp_taskdata_t *new_taskdata = KMP_TASK_TO_TASKDATA(new_task)(((kmp_taskdata_t *)new_task) - 1); | |||
1628 | #endif | |||
1629 | KA_TRACE(10, ("__kmpc_omp_task(enter): T#%d loc=%p task=%p\n", gtid, loc_ref,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, new_taskdata); } | |||
1630 | new_taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(enter): T#%d loc=%p task=%p\n" , gtid, loc_ref, new_taskdata); }; | |||
1631 | ||||
1632 | #if OMPT_SUPPORT1 | |||
1633 | kmp_taskdata_t *parent = NULL__null; | |||
1634 | if (UNLIKELY(ompt_enabled.enabled && !new_taskdata->td_flags.started)__builtin_expect(!!(ompt_enabled.enabled && !new_taskdata ->td_flags.started), 0)) { | |||
1635 | parent = new_taskdata->td_parent; | |||
1636 | if (!parent->ompt_task_info.frame.enter_frame) | |||
1637 | parent->ompt_task_info.frame.enter_frame = OMPT_GET_FRAME_ADDRESS(1)__builtin_frame_address(1); | |||
1638 | if (ompt_enabled.ompt_callback_task_create) { | |||
1639 | ompt_data_t task_data = ompt_data_none; | |||
1640 | ompt_callbacks.ompt_callback(ompt_callback_task_create)ompt_callback_task_create_callback( | |||
1641 | parent ? &(parent->ompt_task_info.task_data) : &task_data, | |||
1642 | parent ? &(parent->ompt_task_info.frame) : NULL__null, | |||
1643 | &(new_taskdata->ompt_task_info.task_data), | |||
1644 | ompt_task_explicit | TASK_TYPE_DETAILS_FORMAT(new_taskdata)((new_taskdata->td_flags.task_serial || new_taskdata->td_flags .tasking_ser) ? ompt_task_undeferred : 0x0) | ((!(new_taskdata ->td_flags.tiedness)) ? ompt_task_untied : 0x0) | (new_taskdata ->td_flags.final ? ompt_task_final : 0x0) | (new_taskdata-> td_flags.merged_if0 ? ompt_task_mergeable : 0x0), 0, | |||
1645 | codeptr_ra); | |||
1646 | } | |||
1647 | } | |||
1648 | #endif | |||
1649 | ||||
1650 | res = __kmp_omp_task(gtid, new_task, true); | |||
1651 | ||||
1652 | KA_TRACE(10, ("__kmpc_omp_task(exit): T#%d returning "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(exit): T#%d returning " "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n", gtid, loc_ref, new_taskdata ); } | |||
1653 | "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(exit): T#%d returning " "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n", gtid, loc_ref, new_taskdata ); } | |||
1654 | gtid, loc_ref, new_taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_task(exit): T#%d returning " "TASK_CURRENT_NOT_QUEUED: loc=%p task=%p\n", gtid, loc_ref, new_taskdata ); }; | |||
1655 | #if OMPT_SUPPORT1 | |||
1656 | if (UNLIKELY(ompt_enabled.enabled && parent != NULL)__builtin_expect(!!(ompt_enabled.enabled && parent != __null), 0)) { | |||
1657 | parent->ompt_task_info.frame.enter_frame = NULL__null; | |||
1658 | } | |||
1659 | #endif | |||
1660 | return res; | |||
1661 | } | |||
1662 | ||||
1663 | template <bool ompt> | |||
1664 | static kmp_int32 __kmpc_omp_taskwait_template(ident_t *loc_ref, kmp_int32 gtid, | |||
1665 | void *frame_address, | |||
1666 | void *return_address) { | |||
1667 | kmp_taskdata_t *taskdata; | |||
1668 | kmp_info_t *thread; | |||
1669 | int thread_finished = FALSE0; | |||
1670 | KMP_SET_THREAD_STATE_BLOCK(TASKWAIT)((void)0); | |||
1671 | ||||
1672 | KA_TRACE(10, ("__kmpc_omp_taskwait(enter): T#%d loc=%p\n", gtid, loc_ref))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskwait(enter): T#%d loc=%p\n" , gtid, loc_ref); }; | |||
1673 | ||||
1674 | if (__kmp_tasking_mode != tskm_immediate_exec) { | |||
1675 | thread = __kmp_threads[gtid]; | |||
1676 | taskdata = thread->th.th_current_task; | |||
1677 | ||||
1678 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
1679 | ompt_data_t *my_task_data; | |||
1680 | ompt_data_t *my_parallel_data; | |||
1681 | ||||
1682 | if (ompt) { | |||
1683 | my_task_data = &(taskdata->ompt_task_info.task_data); | |||
1684 | my_parallel_data = OMPT_CUR_TEAM_DATA(thread)(&(thread->th.th_team->t.ompt_team_info.parallel_data )); | |||
1685 | ||||
1686 | taskdata->ompt_task_info.frame.enter_frame = frame_address; | |||
1687 | ||||
1688 | if (ompt_enabled.ompt_callback_sync_region) { | |||
1689 | ompt_callbacks.ompt_callback(ompt_callback_sync_region)ompt_callback_sync_region_callback( | |||
1690 | ompt_sync_region_taskwait, ompt_scope_begin, my_parallel_data, | |||
1691 | my_task_data, return_address); | |||
1692 | } | |||
1693 | ||||
1694 | if (ompt_enabled.ompt_callback_sync_region_wait) { | |||
1695 | ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)ompt_callback_sync_region_wait_callback( | |||
1696 | ompt_sync_region_taskwait, ompt_scope_begin, my_parallel_data, | |||
1697 | my_task_data, return_address); | |||
1698 | } | |||
1699 | } | |||
1700 | #endif // OMPT_SUPPORT && OMPT_OPTIONAL | |||
1701 | ||||
1702 | // Debugger: The taskwait is active. Store location and thread encountered the | |||
1703 | // taskwait. | |||
1704 | #if USE_ITT_BUILD1 | |||
1705 | // Note: These values are used by ITT events as well. | |||
1706 | #endif /* USE_ITT_BUILD */ | |||
1707 | taskdata->td_taskwait_counter += 1; | |||
1708 | taskdata->td_taskwait_ident = loc_ref; | |||
1709 | taskdata->td_taskwait_thread = gtid + 1; | |||
1710 | ||||
1711 | #if USE_ITT_BUILD1 | |||
1712 | void *itt_sync_obj = __kmp_itt_taskwait_object(gtid); | |||
1713 | if (itt_sync_obj != NULL__null) | |||
1714 | __kmp_itt_taskwait_starting(gtid, itt_sync_obj); | |||
1715 | #endif /* USE_ITT_BUILD */ | |||
1716 | ||||
1717 | bool must_wait = | |||
1718 | !taskdata->td_flags.team_serial && !taskdata->td_flags.final; | |||
1719 | ||||
1720 | #if OMP_45_ENABLED(50 >= 45) | |||
1721 | must_wait = must_wait || (thread->th.th_task_team != NULL__null && | |||
1722 | thread->th.th_task_team->tt.tt_found_proxy_tasks); | |||
1723 | #endif | |||
1724 | if (must_wait) { | |||
1725 | kmp_flag_32 flag(RCAST(std::atomic<kmp_uint32> *,reinterpret_cast<std::atomic<kmp_uint32> *>(& (taskdata->td_incomplete_child_tasks)) | |||
1726 | &(taskdata->td_incomplete_child_tasks))reinterpret_cast<std::atomic<kmp_uint32> *>(& (taskdata->td_incomplete_child_tasks)), | |||
1727 | 0U); | |||
1728 | while (KMP_ATOMIC_LD_ACQ(&taskdata->td_incomplete_child_tasks)(&taskdata->td_incomplete_child_tasks)->load(std::memory_order_acquire ) != 0) { | |||
1729 | flag.execute_tasks(thread, gtid, FALSE0, | |||
1730 | &thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), itt_sync_obj, | |||
1731 | __kmp_task_stealing_constraint); | |||
1732 | } | |||
1733 | } | |||
1734 | #if USE_ITT_BUILD1 | |||
1735 | if (itt_sync_obj != NULL__null) | |||
1736 | __kmp_itt_taskwait_finished(gtid, itt_sync_obj); | |||
1737 | #endif /* USE_ITT_BUILD */ | |||
1738 | ||||
1739 | // Debugger: The taskwait is completed. Location remains, but thread is | |||
1740 | // negated. | |||
1741 | taskdata->td_taskwait_thread = -taskdata->td_taskwait_thread; | |||
1742 | ||||
1743 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
1744 | if (ompt) { | |||
1745 | if (ompt_enabled.ompt_callback_sync_region_wait) { | |||
1746 | ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)ompt_callback_sync_region_wait_callback( | |||
1747 | ompt_sync_region_taskwait, ompt_scope_end, my_parallel_data, | |||
1748 | my_task_data, return_address); | |||
1749 | } | |||
1750 | if (ompt_enabled.ompt_callback_sync_region) { | |||
1751 | ompt_callbacks.ompt_callback(ompt_callback_sync_region)ompt_callback_sync_region_callback( | |||
1752 | ompt_sync_region_taskwait, ompt_scope_end, my_parallel_data, | |||
1753 | my_task_data, return_address); | |||
1754 | } | |||
1755 | taskdata->ompt_task_info.frame.enter_frame = NULL__null; | |||
1756 | } | |||
1757 | #endif // OMPT_SUPPORT && OMPT_OPTIONAL | |||
1758 | ||||
1759 | ANNOTATE_HAPPENS_AFTER(taskdata); | |||
1760 | } | |||
1761 | ||||
1762 | KA_TRACE(10, ("__kmpc_omp_taskwait(exit): T#%d task %p finished waiting, "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskwait(exit): T#%d task %p finished waiting, " "returning TASK_CURRENT_NOT_QUEUED\n", gtid, taskdata); } | |||
1763 | "returning TASK_CURRENT_NOT_QUEUED\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskwait(exit): T#%d task %p finished waiting, " "returning TASK_CURRENT_NOT_QUEUED\n", gtid, taskdata); } | |||
1764 | gtid, taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskwait(exit): T#%d task %p finished waiting, " "returning TASK_CURRENT_NOT_QUEUED\n", gtid, taskdata); }; | |||
1765 | ||||
1766 | return TASK_CURRENT_NOT_QUEUED0; | |||
1767 | } | |||
1768 | ||||
1769 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
1770 | OMPT_NOINLINE__attribute__((noinline)) | |||
1771 | static kmp_int32 __kmpc_omp_taskwait_ompt(ident_t *loc_ref, kmp_int32 gtid, | |||
1772 | void *frame_address, | |||
1773 | void *return_address) { | |||
1774 | return __kmpc_omp_taskwait_template<true>(loc_ref, gtid, frame_address, | |||
1775 | return_address); | |||
1776 | } | |||
1777 | #endif // OMPT_SUPPORT && OMPT_OPTIONAL | |||
1778 | ||||
1779 | // __kmpc_omp_taskwait: Wait until all tasks generated by the current task are | |||
1780 | // complete | |||
1781 | kmp_int32 __kmpc_omp_taskwait(ident_t *loc_ref, kmp_int32 gtid) { | |||
1782 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
1783 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
1784 | OMPT_STORE_RETURN_ADDRESS(gtid)if (ompt_enabled.enabled && gtid >= 0 && __kmp_threads [gtid] && !__kmp_threads[gtid]->th.ompt_thread_info .return_address) __kmp_threads[gtid]->th.ompt_thread_info. return_address = __builtin_return_address(0); | |||
1785 | return __kmpc_omp_taskwait_ompt(loc_ref, gtid, OMPT_GET_FRAME_ADDRESS(1)__builtin_frame_address(1), | |||
1786 | OMPT_LOAD_RETURN_ADDRESS(gtid)__ompt_load_return_address(gtid)); | |||
1787 | } | |||
1788 | #endif | |||
1789 | return __kmpc_omp_taskwait_template<false>(loc_ref, gtid, NULL__null, NULL__null); | |||
1790 | } | |||
1791 | ||||
1792 | // __kmpc_omp_taskyield: switch to a different task | |||
1793 | kmp_int32 __kmpc_omp_taskyield(ident_t *loc_ref, kmp_int32 gtid, int end_part) { | |||
1794 | kmp_taskdata_t *taskdata; | |||
1795 | kmp_info_t *thread; | |||
1796 | int thread_finished = FALSE0; | |||
1797 | ||||
1798 | KMP_COUNT_BLOCK(OMP_TASKYIELD)((void)0); | |||
1799 | KMP_SET_THREAD_STATE_BLOCK(TASKYIELD)((void)0); | |||
1800 | ||||
1801 | KA_TRACE(10, ("__kmpc_omp_taskyield(enter): T#%d loc=%p end_part = %d\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskyield(enter): T#%d loc=%p end_part = %d\n" , gtid, loc_ref, end_part); } | |||
1802 | gtid, loc_ref, end_part))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskyield(enter): T#%d loc=%p end_part = %d\n" , gtid, loc_ref, end_part); }; | |||
1803 | ||||
1804 | if (__kmp_tasking_mode != tskm_immediate_exec && __kmp_init_parallel) { | |||
1805 | thread = __kmp_threads[gtid]; | |||
1806 | taskdata = thread->th.th_current_task; | |||
1807 | // Should we model this as a task wait or not? | |||
1808 | // Debugger: The taskwait is active. Store location and thread encountered the | |||
1809 | // taskwait. | |||
1810 | #if USE_ITT_BUILD1 | |||
1811 | // Note: These values are used by ITT events as well. | |||
1812 | #endif /* USE_ITT_BUILD */ | |||
1813 | taskdata->td_taskwait_counter += 1; | |||
1814 | taskdata->td_taskwait_ident = loc_ref; | |||
1815 | taskdata->td_taskwait_thread = gtid + 1; | |||
1816 | ||||
1817 | #if USE_ITT_BUILD1 | |||
1818 | void *itt_sync_obj = __kmp_itt_taskwait_object(gtid); | |||
1819 | if (itt_sync_obj != NULL__null) | |||
1820 | __kmp_itt_taskwait_starting(gtid, itt_sync_obj); | |||
1821 | #endif /* USE_ITT_BUILD */ | |||
1822 | if (!taskdata->td_flags.team_serial) { | |||
1823 | kmp_task_team_t *task_team = thread->th.th_task_team; | |||
1824 | if (task_team != NULL__null) { | |||
1825 | if (KMP_TASKING_ENABLED(task_team)(((task_team)->tt.tt_found_tasks) == (!0))) { | |||
1826 | #if OMPT_SUPPORT1 | |||
1827 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) | |||
1828 | thread->th.ompt_thread_info.ompt_task_yielded = 1; | |||
1829 | #endif | |||
1830 | __kmp_execute_tasks_32( | |||
1831 | thread, gtid, NULL__null, FALSE0, | |||
1832 | &thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), itt_sync_obj, | |||
1833 | __kmp_task_stealing_constraint); | |||
1834 | #if OMPT_SUPPORT1 | |||
1835 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) | |||
1836 | thread->th.ompt_thread_info.ompt_task_yielded = 0; | |||
1837 | #endif | |||
1838 | } | |||
1839 | } | |||
1840 | } | |||
1841 | #if USE_ITT_BUILD1 | |||
1842 | if (itt_sync_obj != NULL__null) | |||
1843 | __kmp_itt_taskwait_finished(gtid, itt_sync_obj); | |||
1844 | #endif /* USE_ITT_BUILD */ | |||
1845 | ||||
1846 | // Debugger: The taskwait is completed. Location remains, but thread is | |||
1847 | // negated. | |||
1848 | taskdata->td_taskwait_thread = -taskdata->td_taskwait_thread; | |||
1849 | } | |||
1850 | ||||
1851 | KA_TRACE(10, ("__kmpc_omp_taskyield(exit): T#%d task %p resuming, "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskyield(exit): T#%d task %p resuming, " "returning TASK_CURRENT_NOT_QUEUED\n", gtid, taskdata); } | |||
1852 | "returning TASK_CURRENT_NOT_QUEUED\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskyield(exit): T#%d task %p resuming, " "returning TASK_CURRENT_NOT_QUEUED\n", gtid, taskdata); } | |||
1853 | gtid, taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_omp_taskyield(exit): T#%d task %p resuming, " "returning TASK_CURRENT_NOT_QUEUED\n", gtid, taskdata); }; | |||
1854 | ||||
1855 | return TASK_CURRENT_NOT_QUEUED0; | |||
1856 | } | |||
1857 | ||||
1858 | #if OMP_50_ENABLED(50 >= 50) | |||
1859 | // Task Reduction implementation | |||
1860 | ||||
1861 | typedef struct kmp_task_red_flags { | |||
1862 | unsigned lazy_priv : 1; // hint: (1) use lazy allocation (big objects) | |||
1863 | unsigned reserved31 : 31; | |||
1864 | } kmp_task_red_flags_t; | |||
1865 | ||||
1866 | // internal structure for reduction data item related info | |||
1867 | typedef struct kmp_task_red_data { | |||
1868 | void *reduce_shar; // shared reduction item | |||
1869 | size_t reduce_size; // size of data item | |||
1870 | void *reduce_priv; // thread specific data | |||
1871 | void *reduce_pend; // end of private data for comparison op | |||
1872 | void *reduce_init; // data initialization routine | |||
1873 | void *reduce_fini; // data finalization routine | |||
1874 | void *reduce_comb; // data combiner routine | |||
1875 | kmp_task_red_flags_t flags; // flags for additional info from compiler | |||
1876 | } kmp_task_red_data_t; | |||
1877 | ||||
1878 | // structure sent us by compiler - one per reduction item | |||
1879 | typedef struct kmp_task_red_input { | |||
1880 | void *reduce_shar; // shared reduction item | |||
1881 | size_t reduce_size; // size of data item | |||
1882 | void *reduce_init; // data initialization routine | |||
1883 | void *reduce_fini; // data finalization routine | |||
1884 | void *reduce_comb; // data combiner routine | |||
1885 | kmp_task_red_flags_t flags; // flags for additional info from compiler | |||
1886 | } kmp_task_red_input_t; | |||
1887 | ||||
1888 | /*! | |||
1889 | @ingroup TASKING | |||
1890 | @param gtid Global thread ID | |||
1891 | @param num Number of data items to reduce | |||
1892 | @param data Array of data for reduction | |||
1893 | @return The taskgroup identifier | |||
1894 | ||||
1895 | Initialize task reduction for the taskgroup. | |||
1896 | */ | |||
1897 | void *__kmpc_task_reduction_init(int gtid, int num, void *data) { | |||
1898 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
1899 | kmp_taskgroup_t *tg = thread->th.th_current_task->td_taskgroup; | |||
1900 | kmp_int32 nth = thread->th.th_team_nproc; | |||
1901 | kmp_task_red_input_t *input = (kmp_task_red_input_t *)data; | |||
1902 | kmp_task_red_data_t *arr; | |||
1903 | ||||
1904 | // check input data just in case | |||
1905 | KMP_ASSERT(tg != NULL)if (!(tg != __null)) { __kmp_debug_assert("tg != NULL", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1905); }; | |||
1906 | KMP_ASSERT(data != NULL)if (!(data != __null)) { __kmp_debug_assert("data != NULL", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1906); }; | |||
1907 | KMP_ASSERT(num > 0)if (!(num > 0)) { __kmp_debug_assert("num > 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1907); }; | |||
1908 | if (nth == 1) { | |||
1909 | KA_TRACE(10, ("__kmpc_task_reduction_init: T#%d, tg %p, exiting nth=1\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_task_reduction_init: T#%d, tg %p, exiting nth=1\n" , gtid, tg); } | |||
1910 | gtid, tg))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_task_reduction_init: T#%d, tg %p, exiting nth=1\n" , gtid, tg); }; | |||
1911 | return (void *)tg; | |||
1912 | } | |||
1913 | KA_TRACE(10, ("__kmpc_task_reduction_init: T#%d, taskgroup %p, #items %d\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_task_reduction_init: T#%d, taskgroup %p, #items %d\n" , gtid, tg, num); } | |||
1914 | gtid, tg, num))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_task_reduction_init: T#%d, taskgroup %p, #items %d\n" , gtid, tg, num); }; | |||
1915 | arr = (kmp_task_red_data_t *)__kmp_thread_malloc(___kmp_thread_malloc((thread), (num * sizeof(kmp_task_red_data_t )), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1916) | |||
1916 | thread, num * sizeof(kmp_task_red_data_t))___kmp_thread_malloc((thread), (num * sizeof(kmp_task_red_data_t )), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1916); | |||
1917 | for (int i = 0; i < num; ++i) { | |||
1918 | void (*f_init)(void *) = (void (*)(void *))(input[i].reduce_init); | |||
1919 | size_t size = input[i].reduce_size - 1; | |||
1920 | // round the size up to cache line per thread-specific item | |||
1921 | size += CACHE_LINE64 - size % CACHE_LINE64; | |||
1922 | KMP_ASSERT(input[i].reduce_comb != NULL)if (!(input[i].reduce_comb != __null)) { __kmp_debug_assert("input[i].reduce_comb != NULL" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1922); }; // combiner is mandatory | |||
1923 | arr[i].reduce_shar = input[i].reduce_shar; | |||
1924 | arr[i].reduce_size = size; | |||
1925 | arr[i].reduce_init = input[i].reduce_init; | |||
1926 | arr[i].reduce_fini = input[i].reduce_fini; | |||
1927 | arr[i].reduce_comb = input[i].reduce_comb; | |||
1928 | arr[i].flags = input[i].flags; | |||
1929 | if (!input[i].flags.lazy_priv) { | |||
1930 | // allocate cache-line aligned block and fill it with zeros | |||
1931 | arr[i].reduce_priv = __kmp_allocate(nth * size)___kmp_allocate((nth * size), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1931); | |||
1932 | arr[i].reduce_pend = (char *)(arr[i].reduce_priv) + nth * size; | |||
1933 | if (f_init != NULL__null) { | |||
1934 | // initialize thread-specific items | |||
1935 | for (int j = 0; j < nth; ++j) { | |||
1936 | f_init((char *)(arr[i].reduce_priv) + j * size); | |||
1937 | } | |||
1938 | } | |||
1939 | } else { | |||
1940 | // only allocate space for pointers now, | |||
1941 | // objects will be lazily allocated/initialized once requested | |||
1942 | arr[i].reduce_priv = __kmp_allocate(nth * sizeof(void *))___kmp_allocate((nth * sizeof(void *)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1942); | |||
1943 | } | |||
1944 | } | |||
1945 | tg->reduce_data = (void *)arr; | |||
1946 | tg->reduce_num_data = num; | |||
1947 | return (void *)tg; | |||
1948 | } | |||
1949 | ||||
1950 | /*! | |||
1951 | @ingroup TASKING | |||
1952 | @param gtid Global thread ID | |||
1953 | @param tskgrp The taskgroup ID (optional) | |||
1954 | @param data Shared location of the item | |||
1955 | @return The pointer to per-thread data | |||
1956 | ||||
1957 | Get thread-specific location of data item | |||
1958 | */ | |||
1959 | void *__kmpc_task_reduction_get_th_data(int gtid, void *tskgrp, void *data) { | |||
1960 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
1961 | kmp_int32 nth = thread->th.th_team_nproc; | |||
1962 | if (nth == 1) | |||
1963 | return data; // nothing to do | |||
1964 | ||||
1965 | kmp_taskgroup_t *tg = (kmp_taskgroup_t *)tskgrp; | |||
1966 | if (tg == NULL__null) | |||
1967 | tg = thread->th.th_current_task->td_taskgroup; | |||
1968 | KMP_ASSERT(tg != NULL)if (!(tg != __null)) { __kmp_debug_assert("tg != NULL", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1968); }; | |||
1969 | kmp_task_red_data_t *arr = (kmp_task_red_data_t *)(tg->reduce_data); | |||
1970 | kmp_int32 num = tg->reduce_num_data; | |||
1971 | kmp_int32 tid = thread->th.th_info.ds.ds_tid; | |||
1972 | ||||
1973 | KMP_ASSERT(data != NULL)if (!(data != __null)) { __kmp_debug_assert("data != NULL", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1973); }; | |||
1974 | while (tg != NULL__null) { | |||
1975 | for (int i = 0; i < num; ++i) { | |||
1976 | if (!arr[i].flags.lazy_priv) { | |||
1977 | if (data == arr[i].reduce_shar || | |||
1978 | (data >= arr[i].reduce_priv && data < arr[i].reduce_pend)) | |||
1979 | return (char *)(arr[i].reduce_priv) + tid * arr[i].reduce_size; | |||
1980 | } else { | |||
1981 | // check shared location first | |||
1982 | void **p_priv = (void **)(arr[i].reduce_priv); | |||
1983 | if (data == arr[i].reduce_shar) | |||
1984 | goto found; | |||
1985 | // check if we get some thread specific location as parameter | |||
1986 | for (int j = 0; j < nth; ++j) | |||
1987 | if (data == p_priv[j]) | |||
1988 | goto found; | |||
1989 | continue; // not found, continue search | |||
1990 | found: | |||
1991 | if (p_priv[tid] == NULL__null) { | |||
1992 | // allocate thread specific object lazily | |||
1993 | void (*f_init)(void *) = (void (*)(void *))(arr[i].reduce_init); | |||
1994 | p_priv[tid] = __kmp_allocate(arr[i].reduce_size)___kmp_allocate((arr[i].reduce_size), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 1994); | |||
1995 | if (f_init != NULL__null) { | |||
1996 | f_init(p_priv[tid]); | |||
1997 | } | |||
1998 | } | |||
1999 | return p_priv[tid]; | |||
2000 | } | |||
2001 | } | |||
2002 | tg = tg->parent; | |||
2003 | arr = (kmp_task_red_data_t *)(tg->reduce_data); | |||
2004 | num = tg->reduce_num_data; | |||
2005 | } | |||
2006 | KMP_ASSERT2(0, "Unknown task reduction item")if (!(0)) { __kmp_debug_assert(("Unknown task reduction item" ), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2006); }; | |||
2007 | return NULL__null; // ERROR, this line never executed | |||
2008 | } | |||
2009 | ||||
2010 | // Finalize task reduction. | |||
2011 | // Called from __kmpc_end_taskgroup() | |||
2012 | static void __kmp_task_reduction_fini(kmp_info_t *th, kmp_taskgroup_t *tg) { | |||
2013 | kmp_int32 nth = th->th.th_team_nproc; | |||
2014 | KMP_DEBUG_ASSERT(nth > 1)if (!(nth > 1)) { __kmp_debug_assert("nth > 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2014); }; // should not be called if nth == 1 | |||
2015 | kmp_task_red_data_t *arr = (kmp_task_red_data_t *)tg->reduce_data; | |||
2016 | kmp_int32 num = tg->reduce_num_data; | |||
2017 | for (int i = 0; i < num; ++i) { | |||
2018 | void *sh_data = arr[i].reduce_shar; | |||
2019 | void (*f_fini)(void *) = (void (*)(void *))(arr[i].reduce_fini); | |||
2020 | void (*f_comb)(void *, void *) = | |||
2021 | (void (*)(void *, void *))(arr[i].reduce_comb); | |||
2022 | if (!arr[i].flags.lazy_priv) { | |||
2023 | void *pr_data = arr[i].reduce_priv; | |||
2024 | size_t size = arr[i].reduce_size; | |||
2025 | for (int j = 0; j < nth; ++j) { | |||
2026 | void *priv_data = (char *)pr_data + j * size; | |||
2027 | f_comb(sh_data, priv_data); // combine results | |||
2028 | if (f_fini) | |||
2029 | f_fini(priv_data); // finalize if needed | |||
2030 | } | |||
2031 | } else { | |||
2032 | void **pr_data = (void **)(arr[i].reduce_priv); | |||
2033 | for (int j = 0; j < nth; ++j) { | |||
2034 | if (pr_data[j] != NULL__null) { | |||
2035 | f_comb(sh_data, pr_data[j]); // combine results | |||
2036 | if (f_fini) | |||
2037 | f_fini(pr_data[j]); // finalize if needed | |||
2038 | __kmp_free(pr_data[j])___kmp_free((pr_data[j]), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2038); | |||
2039 | } | |||
2040 | } | |||
2041 | } | |||
2042 | __kmp_free(arr[i].reduce_priv)___kmp_free((arr[i].reduce_priv), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2042); | |||
2043 | } | |||
2044 | __kmp_thread_free(th, arr)___kmp_thread_free((th), (arr), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2044); | |||
2045 | tg->reduce_data = NULL__null; | |||
2046 | tg->reduce_num_data = 0; | |||
2047 | } | |||
2048 | #endif | |||
2049 | ||||
2050 | #if OMP_40_ENABLED(50 >= 40) | |||
2051 | // __kmpc_taskgroup: Start a new taskgroup | |||
2052 | void __kmpc_taskgroup(ident_t *loc, int gtid) { | |||
2053 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
2054 | kmp_taskdata_t *taskdata = thread->th.th_current_task; | |||
2055 | kmp_taskgroup_t *tg_new = | |||
2056 | (kmp_taskgroup_t *)__kmp_thread_malloc(thread, sizeof(kmp_taskgroup_t))___kmp_thread_malloc((thread), (sizeof(kmp_taskgroup_t)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2056); | |||
2057 | KA_TRACE(10, ("__kmpc_taskgroup: T#%d loc=%p group=%p\n", gtid, loc, tg_new))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_taskgroup: T#%d loc=%p group=%p\n" , gtid, loc, tg_new); }; | |||
2058 | KMP_ATOMIC_ST_RLX(&tg_new->count, 0)(&tg_new->count)->store(0, std::memory_order_relaxed ); | |||
2059 | KMP_ATOMIC_ST_RLX(&tg_new->cancel_request, cancel_noreq)(&tg_new->cancel_request)->store(cancel_noreq, std:: memory_order_relaxed); | |||
2060 | tg_new->parent = taskdata->td_taskgroup; | |||
2061 | #if OMP_50_ENABLED(50 >= 50) | |||
2062 | tg_new->reduce_data = NULL__null; | |||
2063 | tg_new->reduce_num_data = 0; | |||
2064 | #endif | |||
2065 | taskdata->td_taskgroup = tg_new; | |||
2066 | ||||
2067 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
2068 | if (UNLIKELY(ompt_enabled.ompt_callback_sync_region)__builtin_expect(!!(ompt_enabled.ompt_callback_sync_region), 0 )) { | |||
2069 | void *codeptr = OMPT_LOAD_RETURN_ADDRESS(gtid)__ompt_load_return_address(gtid); | |||
2070 | if (!codeptr) | |||
2071 | codeptr = OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0); | |||
2072 | kmp_team_t *team = thread->th.th_team; | |||
2073 | ompt_data_t my_task_data = taskdata->ompt_task_info.task_data; | |||
2074 | // FIXME: I think this is wrong for lwt! | |||
2075 | ompt_data_t my_parallel_data = team->t.ompt_team_info.parallel_data; | |||
2076 | ||||
2077 | ompt_callbacks.ompt_callback(ompt_callback_sync_region)ompt_callback_sync_region_callback( | |||
2078 | ompt_sync_region_taskgroup, ompt_scope_begin, &(my_parallel_data), | |||
2079 | &(my_task_data), codeptr); | |||
2080 | } | |||
2081 | #endif | |||
2082 | } | |||
2083 | ||||
2084 | // __kmpc_end_taskgroup: Wait until all tasks generated by the current task | |||
2085 | // and its descendants are complete | |||
2086 | void __kmpc_end_taskgroup(ident_t *loc, int gtid) { | |||
2087 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
2088 | kmp_taskdata_t *taskdata = thread->th.th_current_task; | |||
2089 | kmp_taskgroup_t *taskgroup = taskdata->td_taskgroup; | |||
2090 | int thread_finished = FALSE0; | |||
2091 | ||||
2092 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
2093 | kmp_team_t *team; | |||
2094 | ompt_data_t my_task_data; | |||
2095 | ompt_data_t my_parallel_data; | |||
2096 | void *codeptr; | |||
2097 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) { | |||
2098 | team = thread->th.th_team; | |||
2099 | my_task_data = taskdata->ompt_task_info.task_data; | |||
2100 | // FIXME: I think this is wrong for lwt! | |||
2101 | my_parallel_data = team->t.ompt_team_info.parallel_data; | |||
2102 | codeptr = OMPT_LOAD_RETURN_ADDRESS(gtid)__ompt_load_return_address(gtid); | |||
2103 | if (!codeptr) | |||
2104 | codeptr = OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0); | |||
2105 | } | |||
2106 | #endif | |||
2107 | ||||
2108 | KA_TRACE(10, ("__kmpc_end_taskgroup(enter): T#%d loc=%p\n", gtid, loc))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_end_taskgroup(enter): T#%d loc=%p\n" , gtid, loc); }; | |||
2109 | KMP_DEBUG_ASSERT(taskgroup != NULL)if (!(taskgroup != __null)) { __kmp_debug_assert("taskgroup != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2109); }; | |||
2110 | KMP_SET_THREAD_STATE_BLOCK(TASKGROUP)((void)0); | |||
2111 | ||||
2112 | if (__kmp_tasking_mode != tskm_immediate_exec) { | |||
2113 | // mark task as waiting not on a barrier | |||
2114 | taskdata->td_taskwait_counter += 1; | |||
2115 | taskdata->td_taskwait_ident = loc; | |||
2116 | taskdata->td_taskwait_thread = gtid + 1; | |||
2117 | #if USE_ITT_BUILD1 | |||
2118 | // For ITT the taskgroup wait is similar to taskwait until we need to | |||
2119 | // distinguish them | |||
2120 | void *itt_sync_obj = __kmp_itt_taskwait_object(gtid); | |||
2121 | if (itt_sync_obj != NULL__null) | |||
2122 | __kmp_itt_taskwait_starting(gtid, itt_sync_obj); | |||
2123 | #endif /* USE_ITT_BUILD */ | |||
2124 | ||||
2125 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
2126 | if (UNLIKELY(ompt_enabled.ompt_callback_sync_region_wait)__builtin_expect(!!(ompt_enabled.ompt_callback_sync_region_wait ), 0)) { | |||
2127 | ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)ompt_callback_sync_region_wait_callback( | |||
2128 | ompt_sync_region_taskgroup, ompt_scope_begin, &(my_parallel_data), | |||
2129 | &(my_task_data), codeptr); | |||
2130 | } | |||
2131 | #endif | |||
2132 | ||||
2133 | #if OMP_45_ENABLED(50 >= 45) | |||
2134 | if (!taskdata->td_flags.team_serial || | |||
2135 | (thread->th.th_task_team != NULL__null && | |||
2136 | thread->th.th_task_team->tt.tt_found_proxy_tasks)) | |||
2137 | #else | |||
2138 | if (!taskdata->td_flags.team_serial) | |||
2139 | #endif | |||
2140 | { | |||
2141 | kmp_flag_32 flag(RCAST(std::atomic<kmp_uint32> *, &(taskgroup->count))reinterpret_cast<std::atomic<kmp_uint32> *>(& (taskgroup->count)), | |||
2142 | 0U); | |||
2143 | while (KMP_ATOMIC_LD_ACQ(&taskgroup->count)(&taskgroup->count)->load(std::memory_order_acquire ) != 0) { | |||
2144 | flag.execute_tasks(thread, gtid, FALSE0, | |||
2145 | &thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), itt_sync_obj, | |||
2146 | __kmp_task_stealing_constraint); | |||
2147 | } | |||
2148 | } | |||
2149 | taskdata->td_taskwait_thread = -taskdata->td_taskwait_thread; // end waiting | |||
2150 | ||||
2151 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
2152 | if (UNLIKELY(ompt_enabled.ompt_callback_sync_region_wait)__builtin_expect(!!(ompt_enabled.ompt_callback_sync_region_wait ), 0)) { | |||
2153 | ompt_callbacks.ompt_callback(ompt_callback_sync_region_wait)ompt_callback_sync_region_wait_callback( | |||
2154 | ompt_sync_region_taskgroup, ompt_scope_end, &(my_parallel_data), | |||
2155 | &(my_task_data), codeptr); | |||
2156 | } | |||
2157 | #endif | |||
2158 | ||||
2159 | #if USE_ITT_BUILD1 | |||
2160 | if (itt_sync_obj != NULL__null) | |||
2161 | __kmp_itt_taskwait_finished(gtid, itt_sync_obj); | |||
2162 | #endif /* USE_ITT_BUILD */ | |||
2163 | } | |||
2164 | KMP_DEBUG_ASSERT(taskgroup->count == 0)if (!(taskgroup->count == 0)) { __kmp_debug_assert("taskgroup->count == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2164); }; | |||
2165 | ||||
2166 | #if OMP_50_ENABLED(50 >= 50) | |||
2167 | if (taskgroup->reduce_data != NULL__null) // need to reduce? | |||
2168 | __kmp_task_reduction_fini(thread, taskgroup); | |||
2169 | #endif | |||
2170 | // Restore parent taskgroup for the current task | |||
2171 | taskdata->td_taskgroup = taskgroup->parent; | |||
2172 | __kmp_thread_free(thread, taskgroup)___kmp_thread_free((thread), (taskgroup), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2172); | |||
2173 | ||||
2174 | KA_TRACE(10, ("__kmpc_end_taskgroup(exit): T#%d task %p finished waiting\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_end_taskgroup(exit): T#%d task %p finished waiting\n" , gtid, taskdata); } | |||
2175 | gtid, taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmpc_end_taskgroup(exit): T#%d task %p finished waiting\n" , gtid, taskdata); }; | |||
2176 | ANNOTATE_HAPPENS_AFTER(taskdata); | |||
2177 | ||||
2178 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
2179 | if (UNLIKELY(ompt_enabled.ompt_callback_sync_region)__builtin_expect(!!(ompt_enabled.ompt_callback_sync_region), 0 )) { | |||
2180 | ompt_callbacks.ompt_callback(ompt_callback_sync_region)ompt_callback_sync_region_callback( | |||
2181 | ompt_sync_region_taskgroup, ompt_scope_end, &(my_parallel_data), | |||
2182 | &(my_task_data), codeptr); | |||
2183 | } | |||
2184 | #endif | |||
2185 | } | |||
2186 | #endif | |||
2187 | ||||
2188 | // __kmp_remove_my_task: remove a task from my own deque | |||
2189 | static kmp_task_t *__kmp_remove_my_task(kmp_info_t *thread, kmp_int32 gtid, | |||
2190 | kmp_task_team_t *task_team, | |||
2191 | kmp_int32 is_constrained) { | |||
2192 | kmp_task_t *task; | |||
2193 | kmp_taskdata_t *taskdata; | |||
2194 | kmp_thread_data_t *thread_data; | |||
2195 | kmp_uint32 tail; | |||
2196 | ||||
2197 | KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec)if (!(__kmp_tasking_mode != tskm_immediate_exec)) { __kmp_debug_assert ("__kmp_tasking_mode != tskm_immediate_exec", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2197); }; | |||
2198 | KMP_DEBUG_ASSERT(task_team->tt.tt_threads_data !=if (!(task_team->tt.tt_threads_data != __null)) { __kmp_debug_assert ("task_team->tt.tt_threads_data != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2199); } | |||
2199 | NULL)if (!(task_team->tt.tt_threads_data != __null)) { __kmp_debug_assert ("task_team->tt.tt_threads_data != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2199); }; // Caller should check this condition | |||
2200 | ||||
2201 | thread_data = &task_team->tt.tt_threads_data[__kmp_tid_from_gtid(gtid)]; | |||
2202 | ||||
2203 | KA_TRACE(10, ("__kmp_remove_my_task(enter): T#%d ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(enter): T#%d ntasks=%d head=%u tail=%u\n" , gtid, thread_data->td.td_deque_ntasks, thread_data->td .td_deque_head, thread_data->td.td_deque_tail); } | |||
2204 | gtid, thread_data->td.td_deque_ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(enter): T#%d ntasks=%d head=%u tail=%u\n" , gtid, thread_data->td.td_deque_ntasks, thread_data->td .td_deque_head, thread_data->td.td_deque_tail); } | |||
2205 | thread_data->td.td_deque_head, thread_data->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(enter): T#%d ntasks=%d head=%u tail=%u\n" , gtid, thread_data->td.td_deque_ntasks, thread_data->td .td_deque_head, thread_data->td.td_deque_tail); }; | |||
2206 | ||||
2207 | if (TCR_4(thread_data->td.td_deque_ntasks)(thread_data->td.td_deque_ntasks) == 0) { | |||
2208 | KA_TRACE(10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #1): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2209 | ("__kmp_remove_my_task(exit #1): T#%d No tasks to remove: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #1): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2210 | "ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #1): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2211 | gtid, thread_data->td.td_deque_ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #1): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2212 | thread_data->td.td_deque_head, thread_data->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #1): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); }; | |||
2213 | return NULL__null; | |||
2214 | } | |||
2215 | ||||
2216 | __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
2217 | ||||
2218 | if (TCR_4(thread_data->td.td_deque_ntasks)(thread_data->td.td_deque_ntasks) == 0) { | |||
2219 | __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
2220 | KA_TRACE(10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2221 | ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2222 | "ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2223 | gtid, thread_data->td.td_deque_ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2224 | thread_data->td.td_deque_head, thread_data->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); }; | |||
2225 | return NULL__null; | |||
2226 | } | |||
2227 | ||||
2228 | tail = (thread_data->td.td_deque_tail - 1) & | |||
2229 | TASK_DEQUE_MASK(thread_data->td)((thread_data->td).td_deque_size - 1); // Wrap index. | |||
2230 | taskdata = thread_data->td.td_deque[tail]; | |||
2231 | ||||
2232 | if (is_constrained && (taskdata->td_flags.tiedness == TASK_TIED1)) { | |||
2233 | // we need to check if the candidate obeys task scheduling constraint (TSC) | |||
2234 | // only descendant of all deferred tied tasks can be scheduled, checking | |||
2235 | // the last one is enough, as it in turn is the descendant of all others | |||
2236 | kmp_taskdata_t *current = thread->th.th_current_task->td_last_tied; | |||
2237 | KMP_DEBUG_ASSERT(current != NULL)if (!(current != __null)) { __kmp_debug_assert("current != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2237); }; | |||
2238 | // check if last tied task is not suspended on barrier | |||
2239 | if (current->td_flags.tasktype == TASK_EXPLICIT1 || | |||
2240 | current->td_taskwait_thread > 0) { // <= 0 on barrier | |||
2241 | kmp_int32 level = current->td_level; | |||
2242 | kmp_taskdata_t *parent = taskdata->td_parent; | |||
2243 | while (parent != current && parent->td_level > level) { | |||
2244 | parent = parent->td_parent; // check generation up to the level of the | |||
2245 | // current task | |||
2246 | KMP_DEBUG_ASSERT(parent != NULL)if (!(parent != __null)) { __kmp_debug_assert("parent != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2246); }; | |||
2247 | } | |||
2248 | if (parent != current) { | |||
2249 | // The TSC does not allow to steal victim task | |||
2250 | __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
2251 | KA_TRACE(10, ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2252 | "ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2253 | gtid, thread_data->td.td_deque_ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2254 | thread_data->td.td_deque_head,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); } | |||
2255 | thread_data->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d No tasks to remove: " "ntasks=%d head=%u tail=%u\n", gtid, thread_data->td.td_deque_ntasks , thread_data->td.td_deque_head, thread_data->td.td_deque_tail ); }; | |||
2256 | return NULL__null; | |||
2257 | } | |||
2258 | } | |||
2259 | } | |||
2260 | ||||
2261 | thread_data->td.td_deque_tail = tail; | |||
2262 | TCW_4(thread_data->td.td_deque_ntasks, thread_data->td.td_deque_ntasks - 1)(thread_data->td.td_deque_ntasks) = (thread_data->td.td_deque_ntasks - 1); | |||
2263 | ||||
2264 | __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
2265 | ||||
2266 | KA_TRACE(10, ("__kmp_remove_my_task(exit #2): T#%d task %p removed: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d task %p removed: " "ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data-> td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); } | |||
2267 | "ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d task %p removed: " "ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data-> td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); } | |||
2268 | gtid, taskdata, thread_data->td.td_deque_ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d task %p removed: " "ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data-> td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); } | |||
2269 | thread_data->td.td_deque_head, thread_data->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_remove_my_task(exit #2): T#%d task %p removed: " "ntasks=%d head=%u tail=%u\n", gtid, taskdata, thread_data-> td.td_deque_ntasks, thread_data->td.td_deque_head, thread_data ->td.td_deque_tail); }; | |||
2270 | ||||
2271 | task = KMP_TASKDATA_TO_TASK(taskdata)(kmp_task_t *)(taskdata + 1); | |||
2272 | return task; | |||
2273 | } | |||
2274 | ||||
2275 | // __kmp_steal_task: remove a task from another thread's deque | |||
2276 | // Assume that calling thread has already checked existence of | |||
2277 | // task_team thread_data before calling this routine. | |||
2278 | static kmp_task_t *__kmp_steal_task(kmp_info_t *victim_thr, kmp_int32 gtid, | |||
2279 | kmp_task_team_t *task_team, | |||
2280 | std::atomic<kmp_int32> *unfinished_threads, | |||
2281 | int *thread_finished, | |||
2282 | kmp_int32 is_constrained) { | |||
2283 | kmp_task_t *task; | |||
2284 | kmp_taskdata_t *taskdata; | |||
2285 | kmp_taskdata_t *current; | |||
2286 | kmp_thread_data_t *victim_td, *threads_data; | |||
2287 | kmp_int32 level, target; | |||
2288 | kmp_int32 victim_tid; | |||
2289 | ||||
2290 | KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec)if (!(__kmp_tasking_mode != tskm_immediate_exec)) { __kmp_debug_assert ("__kmp_tasking_mode != tskm_immediate_exec", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2290); }; | |||
2291 | ||||
2292 | threads_data = task_team->tt.tt_threads_data; | |||
2293 | KMP_DEBUG_ASSERT(threads_data != NULL)if (!(threads_data != __null)) { __kmp_debug_assert("threads_data != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2293); }; // Caller should check this condition | |||
2294 | ||||
2295 | victim_tid = victim_thr->th.th_info.ds.ds_tid; | |||
2296 | victim_td = &threads_data[victim_tid]; | |||
2297 | ||||
2298 | KA_TRACE(10, ("__kmp_steal_task(enter): T#%d try to steal from T#%d: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(enter): T#%d try to steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2299 | "task_team=%p ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(enter): T#%d try to steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2300 | gtid, __kmp_gtid_from_thread(victim_thr), task_team,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(enter): T#%d try to steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2301 | victim_td->td.td_deque_ntasks, victim_td->td.td_deque_head,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(enter): T#%d try to steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2302 | victim_td->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(enter): T#%d try to steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); }; | |||
2303 | ||||
2304 | if (TCR_4(victim_td->td.td_deque_ntasks)(victim_td->td.td_deque_ntasks) == 0) { | |||
2305 | KA_TRACE(10, ("__kmp_steal_task(exit #1): T#%d could not steal from T#%d: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #1): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2306 | "task_team=%p ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #1): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2307 | gtid, __kmp_gtid_from_thread(victim_thr), task_team,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #1): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2308 | victim_td->td.td_deque_ntasks, victim_td->td.td_deque_head,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #1): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); } | |||
2309 | victim_td->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #1): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, victim_td->td.td_deque_ntasks, victim_td ->td.td_deque_head, victim_td->td.td_deque_tail); }; | |||
2310 | return NULL__null; | |||
2311 | } | |||
2312 | ||||
2313 | __kmp_acquire_bootstrap_lock(&victim_td->td.td_deque_lock); | |||
2314 | ||||
2315 | int ntasks = TCR_4(victim_td->td.td_deque_ntasks)(victim_td->td.td_deque_ntasks); | |||
2316 | // Check again after we acquire the lock | |||
2317 | if (ntasks == 0) { | |||
2318 | __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock); | |||
2319 | KA_TRACE(10, ("__kmp_steal_task(exit #2): T#%d could not steal from T#%d: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #2): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2320 | "task_team=%p ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #2): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2321 | gtid, __kmp_gtid_from_thread(victim_thr), task_team, ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #2): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2322 | victim_td->td.td_deque_head, victim_td->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #2): T#%d could not steal from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); }; | |||
2323 | return NULL__null; | |||
2324 | } | |||
2325 | ||||
2326 | KMP_DEBUG_ASSERT(victim_td->td.td_deque != NULL)if (!(victim_td->td.td_deque != __null)) { __kmp_debug_assert ("victim_td->td.td_deque != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2326); }; | |||
2327 | ||||
2328 | taskdata = victim_td->td.td_deque[victim_td->td.td_deque_head]; | |||
2329 | if (is_constrained && (taskdata->td_flags.tiedness == TASK_TIED1)) { | |||
2330 | // we need to check if the candidate obeys task scheduling constraint (TSC) | |||
2331 | // only descendant of all deferred tied tasks can be scheduled, checking | |||
2332 | // the last one is enough, as it in turn is the descendant of all others | |||
2333 | current = __kmp_threads[gtid]->th.th_current_task->td_last_tied; | |||
2334 | KMP_DEBUG_ASSERT(current != NULL)if (!(current != __null)) { __kmp_debug_assert("current != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2334); }; | |||
2335 | // check if last tied task is not suspended on barrier | |||
2336 | if (current->td_flags.tasktype == TASK_EXPLICIT1 || | |||
2337 | current->td_taskwait_thread > 0) { // <= 0 on barrier | |||
2338 | level = current->td_level; | |||
2339 | kmp_taskdata_t *parent = taskdata->td_parent; | |||
2340 | while (parent != current && parent->td_level > level) { | |||
2341 | parent = parent->td_parent; // check generation up to the level of the | |||
2342 | // current task | |||
2343 | KMP_DEBUG_ASSERT(parent != NULL)if (!(parent != __null)) { __kmp_debug_assert("parent != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2343); }; | |||
2344 | } | |||
2345 | if (parent != current) { | |||
2346 | if (!task_team->tt.tt_untied_task_encountered) { | |||
2347 | // The TSC does not allow to steal victim task | |||
2348 | __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock); | |||
2349 | KA_TRACE(10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #3): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2350 | ("__kmp_steal_task(exit #3): T#%d could not steal from "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #3): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2351 | "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #3): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2352 | gtid, __kmp_gtid_from_thread(victim_thr), task_team, ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #3): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2353 | victim_td->td.td_deque_head, victim_td->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #3): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); }; | |||
2354 | return NULL__null; | |||
2355 | } | |||
2356 | taskdata = NULL__null; // will check other tasks in victim's deque | |||
2357 | } | |||
2358 | } | |||
2359 | } | |||
2360 | if (taskdata != NULL__null) { | |||
2361 | // Bump head pointer and Wrap. | |||
2362 | victim_td->td.td_deque_head = | |||
2363 | (victim_td->td.td_deque_head + 1) & TASK_DEQUE_MASK(victim_td->td)((victim_td->td).td_deque_size - 1); | |||
2364 | } else { | |||
2365 | int i; | |||
2366 | // walk through victim's deque trying to steal any task | |||
2367 | target = victim_td->td.td_deque_head; | |||
2368 | for (i = 1; i < ntasks; ++i) { | |||
2369 | target = (target + 1) & TASK_DEQUE_MASK(victim_td->td)((victim_td->td).td_deque_size - 1); | |||
2370 | taskdata = victim_td->td.td_deque[target]; | |||
2371 | if (taskdata->td_flags.tiedness == TASK_TIED1) { | |||
2372 | // check if the candidate obeys the TSC | |||
2373 | kmp_taskdata_t *parent = taskdata->td_parent; | |||
2374 | // check generation up to the level of the current task | |||
2375 | while (parent != current && parent->td_level > level) { | |||
2376 | parent = parent->td_parent; | |||
2377 | KMP_DEBUG_ASSERT(parent != NULL)if (!(parent != __null)) { __kmp_debug_assert("parent != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2377); }; | |||
2378 | } | |||
2379 | if (parent != current) { | |||
2380 | // The TSC does not allow to steal the candidate | |||
2381 | taskdata = NULL__null; | |||
2382 | continue; | |||
2383 | } else { | |||
2384 | // found victim tied task | |||
2385 | break; | |||
2386 | } | |||
2387 | } else { | |||
2388 | // found victim untied task | |||
2389 | break; | |||
2390 | } | |||
2391 | } | |||
2392 | if (taskdata == NULL__null) { | |||
2393 | // No appropriate candidate to steal found | |||
2394 | __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock); | |||
2395 | KA_TRACE(10, ("__kmp_steal_task(exit #4): T#%d could not steal from "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #4): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2396 | "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #4): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2397 | gtid, __kmp_gtid_from_thread(victim_thr), task_team, ntasks,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #4): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2398 | victim_td->td.td_deque_head, victim_td->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #4): T#%d could not steal from " "T#%d: task_team=%p ntasks=%d head=%u tail=%u\n", gtid, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); }; | |||
2399 | return NULL__null; | |||
2400 | } | |||
2401 | int prev = target; | |||
2402 | for (i = i + 1; i < ntasks; ++i) { | |||
2403 | // shift remaining tasks in the deque left by 1 | |||
2404 | target = (target + 1) & TASK_DEQUE_MASK(victim_td->td)((victim_td->td).td_deque_size - 1); | |||
2405 | victim_td->td.td_deque[prev] = victim_td->td.td_deque[target]; | |||
2406 | prev = target; | |||
2407 | } | |||
2408 | KMP_DEBUG_ASSERT(if (!(victim_td->td.td_deque_tail == (kmp_uint32)((target + 1) & ((victim_td->td).td_deque_size - 1)))) { __kmp_debug_assert ("victim_td->td.td_deque_tail == (kmp_uint32)((target + 1) & ((victim_td->td).td_deque_size - 1))" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2410); } | |||
2409 | victim_td->td.td_deque_tail ==if (!(victim_td->td.td_deque_tail == (kmp_uint32)((target + 1) & ((victim_td->td).td_deque_size - 1)))) { __kmp_debug_assert ("victim_td->td.td_deque_tail == (kmp_uint32)((target + 1) & ((victim_td->td).td_deque_size - 1))" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2410); } | |||
2410 | (kmp_uint32)((target + 1) & TASK_DEQUE_MASK(victim_td->td)))if (!(victim_td->td.td_deque_tail == (kmp_uint32)((target + 1) & ((victim_td->td).td_deque_size - 1)))) { __kmp_debug_assert ("victim_td->td.td_deque_tail == (kmp_uint32)((target + 1) & ((victim_td->td).td_deque_size - 1))" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2410); }; | |||
2411 | victim_td->td.td_deque_tail = target; // tail -= 1 (wrapped)) | |||
2412 | } | |||
2413 | if (*thread_finished) { | |||
2414 | // We need to un-mark this victim as a finished victim. This must be done | |||
2415 | // before releasing the lock, or else other threads (starting with the | |||
2416 | // master victim) might be prematurely released from the barrier!!! | |||
2417 | kmp_int32 count; | |||
2418 | ||||
2419 | count = KMP_ATOMIC_INC(unfinished_threads)(unfinished_threads)->fetch_add(1, std::memory_order_acq_rel ); | |||
2420 | ||||
2421 | KA_TRACE(if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_steal_task: T#%d inc unfinished_threads to %d: task_team=%p\n" , gtid, count + 1, task_team); } | |||
2422 | 20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_steal_task: T#%d inc unfinished_threads to %d: task_team=%p\n" , gtid, count + 1, task_team); } | |||
2423 | ("__kmp_steal_task: T#%d inc unfinished_threads to %d: task_team=%p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_steal_task: T#%d inc unfinished_threads to %d: task_team=%p\n" , gtid, count + 1, task_team); } | |||
2424 | gtid, count + 1, task_team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_steal_task: T#%d inc unfinished_threads to %d: task_team=%p\n" , gtid, count + 1, task_team); }; | |||
2425 | ||||
2426 | *thread_finished = FALSE0; | |||
2427 | } | |||
2428 | TCW_4(victim_td->td.td_deque_ntasks, ntasks - 1)(victim_td->td.td_deque_ntasks) = (ntasks - 1); | |||
2429 | ||||
2430 | __kmp_release_bootstrap_lock(&victim_td->td.td_deque_lock); | |||
2431 | ||||
2432 | KMP_COUNT_BLOCK(TASK_stolen)((void)0); | |||
2433 | KA_TRACE(10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #5): T#%d stole task %p from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2434 | ("__kmp_steal_task(exit #5): T#%d stole task %p from T#%d: "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #5): T#%d stole task %p from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2435 | "task_team=%p ntasks=%d head=%u tail=%u\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #5): T#%d stole task %p from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2436 | gtid, taskdata, __kmp_gtid_from_thread(victim_thr), task_team,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #5): T#%d stole task %p from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); } | |||
2437 | ntasks, victim_td->td.td_deque_head, victim_td->td.td_deque_tail))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_steal_task(exit #5): T#%d stole task %p from T#%d: " "task_team=%p ntasks=%d head=%u tail=%u\n", gtid, taskdata, __kmp_gtid_from_thread (victim_thr), task_team, ntasks, victim_td->td.td_deque_head , victim_td->td.td_deque_tail); }; | |||
2438 | ||||
2439 | task = KMP_TASKDATA_TO_TASK(taskdata)(kmp_task_t *)(taskdata + 1); | |||
2440 | return task; | |||
2441 | } | |||
2442 | ||||
2443 | // __kmp_execute_tasks_template: Choose and execute tasks until either the | |||
2444 | // condition is statisfied (return true) or there are none left (return false). | |||
2445 | // | |||
2446 | // final_spin is TRUE if this is the spin at the release barrier. | |||
2447 | // thread_finished indicates whether the thread is finished executing all | |||
2448 | // the tasks it has on its deque, and is at the release barrier. | |||
2449 | // spinner is the location on which to spin. | |||
2450 | // spinner == NULL means only execute a single task and return. | |||
2451 | // checker is the value to check to terminate the spin. | |||
2452 | template <class C> | |||
2453 | static inline int __kmp_execute_tasks_template( | |||
2454 | kmp_info_t *thread, kmp_int32 gtid, C *flag, int final_spin, | |||
2455 | int *thread_finished USE_ITT_BUILD_ARG(void *itt_sync_obj), void *itt_sync_obj, | |||
2456 | kmp_int32 is_constrained) { | |||
2457 | kmp_task_team_t *task_team = thread->th.th_task_team; | |||
2458 | kmp_thread_data_t *threads_data; | |||
2459 | kmp_task_t *task; | |||
2460 | kmp_info_t *other_thread; | |||
2461 | kmp_taskdata_t *current_task = thread->th.th_current_task; | |||
2462 | std::atomic<kmp_int32> *unfinished_threads; | |||
2463 | kmp_int32 nthreads, victim_tid = -2, use_own_tasks = 1, new_victim = 0, | |||
2464 | tid = thread->th.th_info.ds.ds_tid; | |||
2465 | ||||
2466 | KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec)if (!(__kmp_tasking_mode != tskm_immediate_exec)) { __kmp_debug_assert ("__kmp_tasking_mode != tskm_immediate_exec", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2466); }; | |||
2467 | KMP_DEBUG_ASSERT(thread == __kmp_threads[gtid])if (!(thread == __kmp_threads[gtid])) { __kmp_debug_assert("thread == __kmp_threads[gtid]" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2467); }; | |||
2468 | ||||
2469 | if (task_team == NULL__null || current_task == NULL__null) | |||
2470 | return FALSE0; | |||
2471 | ||||
2472 | KA_TRACE(15, ("__kmp_execute_tasks_template(enter): T#%d final_spin=%d "if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template(enter): T#%d final_spin=%d " "*thread_finished=%d\n", gtid, final_spin, *thread_finished) ; } | |||
2473 | "*thread_finished=%d\n",if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template(enter): T#%d final_spin=%d " "*thread_finished=%d\n", gtid, final_spin, *thread_finished) ; } | |||
2474 | gtid, final_spin, *thread_finished))if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template(enter): T#%d final_spin=%d " "*thread_finished=%d\n", gtid, final_spin, *thread_finished) ; }; | |||
2475 | ||||
2476 | thread->th.th_reap_state = KMP_NOT_SAFE_TO_REAP0; | |||
2477 | threads_data = (kmp_thread_data_t *)TCR_PTR(task_team->tt.tt_threads_data)((void *)(task_team->tt.tt_threads_data)); | |||
2478 | KMP_DEBUG_ASSERT(threads_data != NULL)if (!(threads_data != __null)) { __kmp_debug_assert("threads_data != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2478); }; | |||
2479 | ||||
2480 | nthreads = task_team->tt.tt_nproc; | |||
2481 | unfinished_threads = &(task_team->tt.tt_unfinished_threads); | |||
2482 | #if OMP_45_ENABLED(50 >= 45) | |||
2483 | KMP_DEBUG_ASSERT(nthreads > 1 || task_team->tt.tt_found_proxy_tasks)if (!(nthreads > 1 || task_team->tt.tt_found_proxy_tasks )) { __kmp_debug_assert("nthreads > 1 || task_team->tt.tt_found_proxy_tasks" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2483); }; | |||
2484 | #else | |||
2485 | KMP_DEBUG_ASSERT(nthreads > 1)if (!(nthreads > 1)) { __kmp_debug_assert("nthreads > 1" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2485); }; | |||
2486 | #endif | |||
2487 | KMP_DEBUG_ASSERT(*unfinished_threads >= 0)if (!(*unfinished_threads >= 0)) { __kmp_debug_assert("*unfinished_threads >= 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2487); }; | |||
2488 | ||||
2489 | while (1) { // Outer loop keeps trying to find tasks in case of single thread | |||
2490 | // getting tasks from target constructs | |||
2491 | while (1) { // Inner loop to find a task and execute it | |||
2492 | task = NULL__null; | |||
2493 | if (use_own_tasks) { // check on own queue first | |||
2494 | task = __kmp_remove_my_task(thread, gtid, task_team, is_constrained); | |||
2495 | } | |||
2496 | if ((task == NULL__null) && (nthreads > 1)) { // Steal a task | |||
2497 | int asleep = 1; | |||
2498 | use_own_tasks = 0; | |||
2499 | // Try to steal from the last place I stole from successfully. | |||
2500 | if (victim_tid == -2) { // haven't stolen anything yet | |||
2501 | victim_tid = threads_data[tid].td.td_deque_last_stolen; | |||
2502 | if (victim_tid != | |||
2503 | -1) // if we have a last stolen from victim, get the thread | |||
2504 | other_thread = threads_data[victim_tid].td.td_thr; | |||
2505 | } | |||
2506 | if (victim_tid != -1) { // found last victim | |||
2507 | asleep = 0; | |||
2508 | } else if (!new_victim) { // no recent steals and we haven't already | |||
2509 | // used a new victim; select a random thread | |||
2510 | do { // Find a different thread to steal work from. | |||
2511 | // Pick a random thread. Initial plan was to cycle through all the | |||
2512 | // threads, and only return if we tried to steal from every thread, | |||
2513 | // and failed. Arch says that's not such a great idea. | |||
2514 | victim_tid = __kmp_get_random(thread) % (nthreads - 1); | |||
2515 | if (victim_tid >= tid) { | |||
2516 | ++victim_tid; // Adjusts random distribution to exclude self | |||
2517 | } | |||
2518 | // Found a potential victim | |||
2519 | other_thread = threads_data[victim_tid].td.td_thr; | |||
2520 | // There is a slight chance that __kmp_enable_tasking() did not wake | |||
2521 | // up all threads waiting at the barrier. If victim is sleeping, | |||
2522 | // then wake it up. Since we were going to pay the cache miss | |||
2523 | // penalty for referencing another thread's kmp_info_t struct | |||
2524 | // anyway, | |||
2525 | // the check shouldn't cost too much performance at this point. In | |||
2526 | // extra barrier mode, tasks do not sleep at the separate tasking | |||
2527 | // barrier, so this isn't a problem. | |||
2528 | asleep = 0; | |||
2529 | if ((__kmp_tasking_mode == tskm_task_teams) && | |||
2530 | (__kmp_dflt_blocktime != KMP_MAX_BLOCKTIME(2147483647)) && | |||
2531 | (TCR_PTR(CCAST(void *, other_thread->th.th_sleep_loc))((void *)(const_cast<void *>(other_thread->th.th_sleep_loc ))) != | |||
2532 | NULL__null)) { | |||
2533 | asleep = 1; | |||
2534 | __kmp_null_resume_wrapper(__kmp_gtid_from_thread(other_thread), | |||
2535 | other_thread->th.th_sleep_loc); | |||
2536 | // A sleeping thread should not have any tasks on it's queue. | |||
2537 | // There is a slight possibility that it resumes, steals a task | |||
2538 | // from another thread, which spawns more tasks, all in the time | |||
2539 | // that it takes this thread to check => don't write an assertion | |||
2540 | // that the victim's queue is empty. Try stealing from a | |||
2541 | // different thread. | |||
2542 | } | |||
2543 | } while (asleep); | |||
2544 | } | |||
2545 | ||||
2546 | if (!asleep) { | |||
2547 | // We have a victim to try to steal from | |||
2548 | task = __kmp_steal_task(other_thread, gtid, task_team, | |||
2549 | unfinished_threads, thread_finished, | |||
2550 | is_constrained); | |||
2551 | } | |||
2552 | if (task != NULL__null) { // set last stolen to victim | |||
2553 | if (threads_data[tid].td.td_deque_last_stolen != victim_tid) { | |||
2554 | threads_data[tid].td.td_deque_last_stolen = victim_tid; | |||
2555 | // The pre-refactored code did not try more than 1 successful new | |||
2556 | // vicitm, unless the last one generated more local tasks; | |||
2557 | // new_victim keeps track of this | |||
2558 | new_victim = 1; | |||
2559 | } | |||
2560 | } else { // No tasks found; unset last_stolen | |||
2561 | KMP_CHECK_UPDATE(threads_data[tid].td.td_deque_last_stolen, -1)if ((threads_data[tid].td.td_deque_last_stolen) != (-1)) (threads_data [tid].td.td_deque_last_stolen) = (-1); | |||
2562 | victim_tid = -2; // no successful victim found | |||
2563 | } | |||
2564 | } | |||
2565 | ||||
2566 | if (task == NULL__null) // break out of tasking loop | |||
2567 | break; | |||
2568 | ||||
2569 | // Found a task; execute it | |||
2570 | #if USE_ITT_BUILD1 && USE_ITT_NOTIFY1 | |||
2571 | if (__itt_sync_create_ptr__kmp_itt_sync_create_ptr__3_0 || KMP_ITT_DEBUG0) { | |||
2572 | if (itt_sync_obj == NULL__null) { // we are at fork barrier where we could not | |||
2573 | // get the object reliably | |||
2574 | itt_sync_obj = __kmp_itt_barrier_object(gtid, bs_forkjoin_barrier); | |||
2575 | } | |||
2576 | __kmp_itt_task_starting(itt_sync_obj); | |||
2577 | } | |||
2578 | #endif /* USE_ITT_BUILD && USE_ITT_NOTIFY */ | |||
2579 | __kmp_invoke_task(gtid, task, current_task); | |||
2580 | #if USE_ITT_BUILD1 | |||
2581 | if (itt_sync_obj != NULL__null) | |||
2582 | __kmp_itt_task_finished(itt_sync_obj); | |||
2583 | #endif /* USE_ITT_BUILD */ | |||
2584 | // If this thread is only partway through the barrier and the condition is | |||
2585 | // met, then return now, so that the barrier gather/release pattern can | |||
2586 | // proceed. If this thread is in the last spin loop in the barrier, | |||
2587 | // waiting to be released, we know that the termination condition will not | |||
2588 | // be satisified, so don't waste any cycles checking it. | |||
2589 | if (flag == NULL__null || (!final_spin && flag->done_check())) { | |||
2590 | KA_TRACE(if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); } | |||
2591 | 15,if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); } | |||
2592 | ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n",if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); } | |||
2593 | gtid))if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); }; | |||
2594 | return TRUE(!0); | |||
2595 | } | |||
2596 | if (thread->th.th_task_team == NULL__null) { | |||
2597 | break; | |||
2598 | } | |||
2599 | // Yield before executing next task | |||
2600 | KMP_YIELD(__kmp_library == library_throughput){ __kmp_x86_pause(); __kmp_yield((__kmp_library == library_throughput )); }; | |||
2601 | // If execution of a stolen task results in more tasks being placed on our | |||
2602 | // run queue, reset use_own_tasks | |||
2603 | if (!use_own_tasks && TCR_4(threads_data[tid].td.td_deque_ntasks)(threads_data[tid].td.td_deque_ntasks) != 0) { | |||
2604 | KA_TRACE(20, ("__kmp_execute_tasks_template: T#%d stolen task spawned "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d stolen task spawned " "other tasks, restart\n", gtid); } | |||
2605 | "other tasks, restart\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d stolen task spawned " "other tasks, restart\n", gtid); } | |||
2606 | gtid))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d stolen task spawned " "other tasks, restart\n", gtid); }; | |||
2607 | use_own_tasks = 1; | |||
2608 | new_victim = 0; | |||
2609 | } | |||
2610 | } | |||
2611 | ||||
2612 | // The task source has been exhausted. If in final spin loop of barrier, check | |||
2613 | // if termination condition is satisfied. | |||
2614 | #if OMP_45_ENABLED(50 >= 45) | |||
2615 | // The work queue may be empty but there might be proxy tasks still | |||
2616 | // executing | |||
2617 | if (final_spin && | |||
2618 | KMP_ATOMIC_LD_ACQ(¤t_task->td_incomplete_child_tasks)(¤t_task->td_incomplete_child_tasks)->load(std ::memory_order_acquire) == 0) | |||
2619 | #else | |||
2620 | if (final_spin) | |||
2621 | #endif | |||
2622 | { | |||
2623 | // First, decrement the #unfinished threads, if that has not already been | |||
2624 | // done. This decrement might be to the spin location, and result in the | |||
2625 | // termination condition being satisfied. | |||
2626 | if (!*thread_finished) { | |||
2627 | kmp_int32 count; | |||
2628 | ||||
2629 | count = KMP_ATOMIC_DEC(unfinished_threads)(unfinished_threads)->fetch_sub(1, std::memory_order_acq_rel ) - 1; | |||
2630 | KA_TRACE(20, ("__kmp_execute_tasks_template: T#%d dec "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d dec " "unfinished_threads to %d task_team=%p\n", gtid, count, task_team ); } | |||
2631 | "unfinished_threads to %d task_team=%p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d dec " "unfinished_threads to %d task_team=%p\n", gtid, count, task_team ); } | |||
2632 | gtid, count, task_team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d dec " "unfinished_threads to %d task_team=%p\n", gtid, count, task_team ); }; | |||
2633 | *thread_finished = TRUE(!0); | |||
2634 | } | |||
2635 | ||||
2636 | // It is now unsafe to reference thread->th.th_team !!! | |||
2637 | // Decrementing task_team->tt.tt_unfinished_threads can allow the master | |||
2638 | // thread to pass through the barrier, where it might reset each thread's | |||
2639 | // th.th_team field for the next parallel region. If we can steal more | |||
2640 | // work, we know that this has not happened yet. | |||
2641 | if (flag != NULL__null && flag->done_check()) { | |||
2642 | KA_TRACE(if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); } | |||
2643 | 15,if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); } | |||
2644 | ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n",if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); } | |||
2645 | gtid))if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d spin condition satisfied\n" , gtid); }; | |||
2646 | return TRUE(!0); | |||
2647 | } | |||
2648 | } | |||
2649 | ||||
2650 | // If this thread's task team is NULL, master has recognized that there are | |||
2651 | // no more tasks; bail out | |||
2652 | if (thread->th.th_task_team == NULL__null) { | |||
2653 | KA_TRACE(15,if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d no more tasks\n" , gtid); } | |||
2654 | ("__kmp_execute_tasks_template: T#%d no more tasks\n", gtid))if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d no more tasks\n" , gtid); }; | |||
2655 | return FALSE0; | |||
2656 | } | |||
2657 | ||||
2658 | #if OMP_45_ENABLED(50 >= 45) | |||
2659 | // We could be getting tasks from target constructs; if this is the only | |||
2660 | // thread, keep trying to execute tasks from own queue | |||
2661 | if (nthreads == 1) | |||
2662 | use_own_tasks = 1; | |||
2663 | else | |||
2664 | #endif | |||
2665 | { | |||
2666 | KA_TRACE(15,if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d can't find work\n" , gtid); } | |||
2667 | ("__kmp_execute_tasks_template: T#%d can't find work\n", gtid))if (kmp_a_debug >= 15) { __kmp_debug_printf ("__kmp_execute_tasks_template: T#%d can't find work\n" , gtid); }; | |||
2668 | return FALSE0; | |||
2669 | } | |||
2670 | } | |||
2671 | } | |||
2672 | ||||
2673 | int __kmp_execute_tasks_32( | |||
2674 | kmp_info_t *thread, kmp_int32 gtid, kmp_flag_32 *flag, int final_spin, | |||
2675 | int *thread_finished USE_ITT_BUILD_ARG(void *itt_sync_obj), void *itt_sync_obj, | |||
2676 | kmp_int32 is_constrained) { | |||
2677 | return __kmp_execute_tasks_template( | |||
2678 | thread, gtid, flag, final_spin, | |||
2679 | thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), itt_sync_obj, is_constrained); | |||
2680 | } | |||
2681 | ||||
2682 | int __kmp_execute_tasks_64( | |||
2683 | kmp_info_t *thread, kmp_int32 gtid, kmp_flag_64 *flag, int final_spin, | |||
2684 | int *thread_finished USE_ITT_BUILD_ARG(void *itt_sync_obj), void *itt_sync_obj, | |||
2685 | kmp_int32 is_constrained) { | |||
2686 | return __kmp_execute_tasks_template( | |||
2687 | thread, gtid, flag, final_spin, | |||
2688 | thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), itt_sync_obj, is_constrained); | |||
2689 | } | |||
2690 | ||||
2691 | int __kmp_execute_tasks_oncore( | |||
2692 | kmp_info_t *thread, kmp_int32 gtid, kmp_flag_oncore *flag, int final_spin, | |||
2693 | int *thread_finished USE_ITT_BUILD_ARG(void *itt_sync_obj), void *itt_sync_obj, | |||
2694 | kmp_int32 is_constrained) { | |||
2695 | return __kmp_execute_tasks_template( | |||
2696 | thread, gtid, flag, final_spin, | |||
2697 | thread_finished USE_ITT_BUILD_ARG(itt_sync_obj), itt_sync_obj, is_constrained); | |||
2698 | } | |||
2699 | ||||
2700 | // __kmp_enable_tasking: Allocate task team and resume threads sleeping at the | |||
2701 | // next barrier so they can assist in executing enqueued tasks. | |||
2702 | // First thread in allocates the task team atomically. | |||
2703 | static void __kmp_enable_tasking(kmp_task_team_t *task_team, | |||
2704 | kmp_info_t *this_thr) { | |||
2705 | kmp_thread_data_t *threads_data; | |||
2706 | int nthreads, i, is_init_thread; | |||
2707 | ||||
2708 | KA_TRACE(10, ("__kmp_enable_tasking(enter): T#%d\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_enable_tasking(enter): T#%d\n" , __kmp_gtid_from_thread(this_thr)); } | |||
2709 | __kmp_gtid_from_thread(this_thr)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_enable_tasking(enter): T#%d\n" , __kmp_gtid_from_thread(this_thr)); }; | |||
2710 | ||||
2711 | KMP_DEBUG_ASSERT(task_team != NULL)if (!(task_team != __null)) { __kmp_debug_assert("task_team != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2711); }; | |||
2712 | KMP_DEBUG_ASSERT(this_thr->th.th_team != NULL)if (!(this_thr->th.th_team != __null)) { __kmp_debug_assert ("this_thr->th.th_team != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2712); }; | |||
2713 | ||||
2714 | nthreads = task_team->tt.tt_nproc; | |||
2715 | KMP_DEBUG_ASSERT(nthreads > 0)if (!(nthreads > 0)) { __kmp_debug_assert("nthreads > 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2715); }; | |||
2716 | KMP_DEBUG_ASSERT(nthreads == this_thr->th.th_team->t.t_nproc)if (!(nthreads == this_thr->th.th_team->t.t_nproc)) { __kmp_debug_assert ("nthreads == this_thr->th.th_team->t.t_nproc", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2716); }; | |||
2717 | ||||
2718 | // Allocate or increase the size of threads_data if necessary | |||
2719 | is_init_thread = __kmp_realloc_task_threads_data(this_thr, task_team); | |||
2720 | ||||
2721 | if (!is_init_thread) { | |||
2722 | // Some other thread already set up the array. | |||
2723 | KA_TRACE(if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_enable_tasking(exit): T#%d: threads array already set up.\n" , __kmp_gtid_from_thread(this_thr)); } | |||
2724 | 20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_enable_tasking(exit): T#%d: threads array already set up.\n" , __kmp_gtid_from_thread(this_thr)); } | |||
2725 | ("__kmp_enable_tasking(exit): T#%d: threads array already set up.\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_enable_tasking(exit): T#%d: threads array already set up.\n" , __kmp_gtid_from_thread(this_thr)); } | |||
2726 | __kmp_gtid_from_thread(this_thr)))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_enable_tasking(exit): T#%d: threads array already set up.\n" , __kmp_gtid_from_thread(this_thr)); }; | |||
2727 | return; | |||
2728 | } | |||
2729 | threads_data = (kmp_thread_data_t *)TCR_PTR(task_team->tt.tt_threads_data)((void *)(task_team->tt.tt_threads_data)); | |||
2730 | KMP_DEBUG_ASSERT(threads_data != NULL)if (!(threads_data != __null)) { __kmp_debug_assert("threads_data != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2730); }; | |||
2731 | ||||
2732 | if ((__kmp_tasking_mode == tskm_task_teams) && | |||
2733 | (__kmp_dflt_blocktime != KMP_MAX_BLOCKTIME(2147483647))) { | |||
2734 | // Release any threads sleeping at the barrier, so that they can steal | |||
2735 | // tasks and execute them. In extra barrier mode, tasks do not sleep | |||
2736 | // at the separate tasking barrier, so this isn't a problem. | |||
2737 | for (i = 0; i < nthreads; i++) { | |||
2738 | volatile void *sleep_loc; | |||
2739 | kmp_info_t *thread = threads_data[i].td.td_thr; | |||
2740 | ||||
2741 | if (i == this_thr->th.th_info.ds.ds_tid) { | |||
2742 | continue; | |||
2743 | } | |||
2744 | // Since we haven't locked the thread's suspend mutex lock at this | |||
2745 | // point, there is a small window where a thread might be putting | |||
2746 | // itself to sleep, but hasn't set the th_sleep_loc field yet. | |||
2747 | // To work around this, __kmp_execute_tasks_template() periodically checks | |||
2748 | // see if other threads are sleeping (using the same random mechanism that | |||
2749 | // is used for task stealing) and awakens them if they are. | |||
2750 | if ((sleep_loc = TCR_PTR(CCAST(void *, thread->th.th_sleep_loc))((void *)(const_cast<void *>(thread->th.th_sleep_loc )))) != | |||
2751 | NULL__null) { | |||
2752 | KF_TRACE(50, ("__kmp_enable_tasking: T#%d waking up thread T#%d\n",if (kmp_f_debug >= 50) { __kmp_debug_printf ("__kmp_enable_tasking: T#%d waking up thread T#%d\n" , __kmp_gtid_from_thread(this_thr), __kmp_gtid_from_thread(thread )); } | |||
2753 | __kmp_gtid_from_thread(this_thr),if (kmp_f_debug >= 50) { __kmp_debug_printf ("__kmp_enable_tasking: T#%d waking up thread T#%d\n" , __kmp_gtid_from_thread(this_thr), __kmp_gtid_from_thread(thread )); } | |||
2754 | __kmp_gtid_from_thread(thread)))if (kmp_f_debug >= 50) { __kmp_debug_printf ("__kmp_enable_tasking: T#%d waking up thread T#%d\n" , __kmp_gtid_from_thread(this_thr), __kmp_gtid_from_thread(thread )); }; | |||
2755 | __kmp_null_resume_wrapper(__kmp_gtid_from_thread(thread), sleep_loc); | |||
2756 | } else { | |||
2757 | KF_TRACE(50, ("__kmp_enable_tasking: T#%d don't wake up thread T#%d\n",if (kmp_f_debug >= 50) { __kmp_debug_printf ("__kmp_enable_tasking: T#%d don't wake up thread T#%d\n" , __kmp_gtid_from_thread(this_thr), __kmp_gtid_from_thread(thread )); } | |||
2758 | __kmp_gtid_from_thread(this_thr),if (kmp_f_debug >= 50) { __kmp_debug_printf ("__kmp_enable_tasking: T#%d don't wake up thread T#%d\n" , __kmp_gtid_from_thread(this_thr), __kmp_gtid_from_thread(thread )); } | |||
2759 | __kmp_gtid_from_thread(thread)))if (kmp_f_debug >= 50) { __kmp_debug_printf ("__kmp_enable_tasking: T#%d don't wake up thread T#%d\n" , __kmp_gtid_from_thread(this_thr), __kmp_gtid_from_thread(thread )); }; | |||
2760 | } | |||
2761 | } | |||
2762 | } | |||
2763 | ||||
2764 | KA_TRACE(10, ("__kmp_enable_tasking(exit): T#%d\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_enable_tasking(exit): T#%d\n" , __kmp_gtid_from_thread(this_thr)); } | |||
2765 | __kmp_gtid_from_thread(this_thr)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_enable_tasking(exit): T#%d\n" , __kmp_gtid_from_thread(this_thr)); }; | |||
2766 | } | |||
2767 | ||||
2768 | /* // TODO: Check the comment consistency | |||
2769 | * Utility routines for "task teams". A task team (kmp_task_t) is kind of | |||
2770 | * like a shadow of the kmp_team_t data struct, with a different lifetime. | |||
2771 | * After a child * thread checks into a barrier and calls __kmp_release() from | |||
2772 | * the particular variant of __kmp_<barrier_kind>_barrier_gather(), it can no | |||
2773 | * longer assume that the kmp_team_t structure is intact (at any moment, the | |||
2774 | * master thread may exit the barrier code and free the team data structure, | |||
2775 | * and return the threads to the thread pool). | |||
2776 | * | |||
2777 | * This does not work with the the tasking code, as the thread is still | |||
2778 | * expected to participate in the execution of any tasks that may have been | |||
2779 | * spawned my a member of the team, and the thread still needs access to all | |||
2780 | * to each thread in the team, so that it can steal work from it. | |||
2781 | * | |||
2782 | * Enter the existence of the kmp_task_team_t struct. It employs a reference | |||
2783 | * counting mechanims, and is allocated by the master thread before calling | |||
2784 | * __kmp_<barrier_kind>_release, and then is release by the last thread to | |||
2785 | * exit __kmp_<barrier_kind>_release at the next barrier. I.e. the lifetimes | |||
2786 | * of the kmp_task_team_t structs for consecutive barriers can overlap | |||
2787 | * (and will, unless the master thread is the last thread to exit the barrier | |||
2788 | * release phase, which is not typical). | |||
2789 | * | |||
2790 | * The existence of such a struct is useful outside the context of tasking, | |||
2791 | * but for now, I'm trying to keep it specific to the OMP_30_ENABLED macro, | |||
2792 | * so that any performance differences show up when comparing the 2.5 vs. 3.0 | |||
2793 | * libraries. | |||
2794 | * | |||
2795 | * We currently use the existence of the threads array as an indicator that | |||
2796 | * tasks were spawned since the last barrier. If the structure is to be | |||
2797 | * useful outside the context of tasking, then this will have to change, but | |||
2798 | * not settting the field minimizes the performance impact of tasking on | |||
2799 | * barriers, when no explicit tasks were spawned (pushed, actually). | |||
2800 | */ | |||
2801 | ||||
2802 | static kmp_task_team_t *__kmp_free_task_teams = | |||
2803 | NULL__null; // Free list for task_team data structures | |||
2804 | // Lock for task team data structures | |||
2805 | kmp_bootstrap_lock_t __kmp_task_team_lock = | |||
2806 | KMP_BOOTSTRAP_LOCK_INITIALIZER(__kmp_task_team_lock){ { { true } , &((__kmp_task_team_lock)), __null, { 0U }, { 0U }, { 0 }, { -1 } } }; | |||
2807 | ||||
2808 | // __kmp_alloc_task_deque: | |||
2809 | // Allocates a task deque for a particular thread, and initialize the necessary | |||
2810 | // data structures relating to the deque. This only happens once per thread | |||
2811 | // per task team since task teams are recycled. No lock is needed during | |||
2812 | // allocation since each thread allocates its own deque. | |||
2813 | static void __kmp_alloc_task_deque(kmp_info_t *thread, | |||
2814 | kmp_thread_data_t *thread_data) { | |||
2815 | __kmp_init_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
2816 | KMP_DEBUG_ASSERT(thread_data->td.td_deque == NULL)if (!(thread_data->td.td_deque == __null)) { __kmp_debug_assert ("thread_data->td.td_deque == __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2816); }; | |||
2817 | ||||
2818 | // Initialize last stolen task field to "none" | |||
2819 | thread_data->td.td_deque_last_stolen = -1; | |||
2820 | ||||
2821 | KMP_DEBUG_ASSERT(TCR_4(thread_data->td.td_deque_ntasks) == 0)if (!((thread_data->td.td_deque_ntasks) == 0)) { __kmp_debug_assert ("(thread_data->td.td_deque_ntasks) == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2821); }; | |||
2822 | KMP_DEBUG_ASSERT(thread_data->td.td_deque_head == 0)if (!(thread_data->td.td_deque_head == 0)) { __kmp_debug_assert ("thread_data->td.td_deque_head == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2822); }; | |||
2823 | KMP_DEBUG_ASSERT(thread_data->td.td_deque_tail == 0)if (!(thread_data->td.td_deque_tail == 0)) { __kmp_debug_assert ("thread_data->td.td_deque_tail == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2823); }; | |||
2824 | ||||
2825 | KE_TRACE(if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_alloc_task_deque: T#%d allocating deque[%d] for thread_data %p\n" , __kmp_gtid_from_thread(thread), (1 << 8), thread_data ); } | |||
2826 | 10,if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_alloc_task_deque: T#%d allocating deque[%d] for thread_data %p\n" , __kmp_gtid_from_thread(thread), (1 << 8), thread_data ); } | |||
2827 | ("__kmp_alloc_task_deque: T#%d allocating deque[%d] for thread_data %p\n",if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_alloc_task_deque: T#%d allocating deque[%d] for thread_data %p\n" , __kmp_gtid_from_thread(thread), (1 << 8), thread_data ); } | |||
2828 | __kmp_gtid_from_thread(thread), INITIAL_TASK_DEQUE_SIZE, thread_data))if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_alloc_task_deque: T#%d allocating deque[%d] for thread_data %p\n" , __kmp_gtid_from_thread(thread), (1 << 8), thread_data ); }; | |||
2829 | // Allocate space for task deque, and zero the deque | |||
2830 | // Cannot use __kmp_thread_calloc() because threads not around for | |||
2831 | // kmp_reap_task_team( ). | |||
2832 | thread_data->td.td_deque = (kmp_taskdata_t **)__kmp_allocate(___kmp_allocate(((1 << 8) * sizeof(kmp_taskdata_t *)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2833) | |||
2833 | INITIAL_TASK_DEQUE_SIZE * sizeof(kmp_taskdata_t *))___kmp_allocate(((1 << 8) * sizeof(kmp_taskdata_t *)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2833); | |||
2834 | thread_data->td.td_deque_size = INITIAL_TASK_DEQUE_SIZE(1 << 8); | |||
2835 | } | |||
2836 | ||||
2837 | // __kmp_realloc_task_deque: | |||
2838 | // Re-allocates a task deque for a particular thread, copies the content from | |||
2839 | // the old deque and adjusts the necessary data structures relating to the | |||
2840 | // deque. This operation must be done with a the deque_lock being held | |||
2841 | static void __kmp_realloc_task_deque(kmp_info_t *thread, | |||
2842 | kmp_thread_data_t *thread_data) { | |||
2843 | kmp_int32 size = TASK_DEQUE_SIZE(thread_data->td)((thread_data->td).td_deque_size); | |||
2844 | kmp_int32 new_size = 2 * size; | |||
2845 | ||||
2846 | KE_TRACE(10, ("__kmp_realloc_task_deque: T#%d reallocating deque[from %d to "if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_deque: T#%d reallocating deque[from %d to " "%d] for thread_data %p\n", __kmp_gtid_from_thread(thread), size , new_size, thread_data); } | |||
2847 | "%d] for thread_data %p\n",if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_deque: T#%d reallocating deque[from %d to " "%d] for thread_data %p\n", __kmp_gtid_from_thread(thread), size , new_size, thread_data); } | |||
2848 | __kmp_gtid_from_thread(thread), size, new_size, thread_data))if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_deque: T#%d reallocating deque[from %d to " "%d] for thread_data %p\n", __kmp_gtid_from_thread(thread), size , new_size, thread_data); }; | |||
2849 | ||||
2850 | kmp_taskdata_t **new_deque = | |||
2851 | (kmp_taskdata_t **)__kmp_allocate(new_size * sizeof(kmp_taskdata_t *))___kmp_allocate((new_size * sizeof(kmp_taskdata_t *)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2851); | |||
2852 | ||||
2853 | int i, j; | |||
2854 | for (i = thread_data->td.td_deque_head, j = 0; j < size; | |||
2855 | i = (i + 1) & TASK_DEQUE_MASK(thread_data->td)((thread_data->td).td_deque_size - 1), j++) | |||
2856 | new_deque[j] = thread_data->td.td_deque[i]; | |||
2857 | ||||
2858 | __kmp_free(thread_data->td.td_deque)___kmp_free((thread_data->td.td_deque), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2858); | |||
2859 | ||||
2860 | thread_data->td.td_deque_head = 0; | |||
2861 | thread_data->td.td_deque_tail = size; | |||
2862 | thread_data->td.td_deque = new_deque; | |||
2863 | thread_data->td.td_deque_size = new_size; | |||
2864 | } | |||
2865 | ||||
2866 | // __kmp_free_task_deque: | |||
2867 | // Deallocates a task deque for a particular thread. Happens at library | |||
2868 | // deallocation so don't need to reset all thread data fields. | |||
2869 | static void __kmp_free_task_deque(kmp_thread_data_t *thread_data) { | |||
2870 | if (thread_data->td.td_deque != NULL__null) { | |||
2871 | __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
2872 | TCW_4(thread_data->td.td_deque_ntasks, 0)(thread_data->td.td_deque_ntasks) = (0); | |||
2873 | __kmp_free(thread_data->td.td_deque)___kmp_free((thread_data->td.td_deque), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2873); | |||
2874 | thread_data->td.td_deque = NULL__null; | |||
2875 | __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
2876 | } | |||
2877 | ||||
2878 | #ifdef BUILD_TIED_TASK_STACK | |||
2879 | // GEH: Figure out what to do here for td_susp_tied_tasks | |||
2880 | if (thread_data->td.td_susp_tied_tasks.ts_entries != TASK_STACK_EMPTY) { | |||
2881 | __kmp_free_task_stack(__kmp_thread_from_gtid(gtid), thread_data); | |||
2882 | } | |||
2883 | #endif // BUILD_TIED_TASK_STACK | |||
2884 | } | |||
2885 | ||||
2886 | // __kmp_realloc_task_threads_data: | |||
2887 | // Allocates a threads_data array for a task team, either by allocating an | |||
2888 | // initial array or enlarging an existing array. Only the first thread to get | |||
2889 | // the lock allocs or enlarges the array and re-initializes the array eleemnts. | |||
2890 | // That thread returns "TRUE", the rest return "FALSE". | |||
2891 | // Assumes that the new array size is given by task_team -> tt.tt_nproc. | |||
2892 | // The current size is given by task_team -> tt.tt_max_threads. | |||
2893 | static int __kmp_realloc_task_threads_data(kmp_info_t *thread, | |||
2894 | kmp_task_team_t *task_team) { | |||
2895 | kmp_thread_data_t **threads_data_p; | |||
2896 | kmp_int32 nthreads, maxthreads; | |||
2897 | int is_init_thread = FALSE0; | |||
2898 | ||||
2899 | if (TCR_4(task_team->tt.tt_found_tasks)(task_team->tt.tt_found_tasks)) { | |||
2900 | // Already reallocated and initialized. | |||
2901 | return FALSE0; | |||
2902 | } | |||
2903 | ||||
2904 | threads_data_p = &task_team->tt.tt_threads_data; | |||
2905 | nthreads = task_team->tt.tt_nproc; | |||
2906 | maxthreads = task_team->tt.tt_max_threads; | |||
2907 | ||||
2908 | // All threads must lock when they encounter the first task of the implicit | |||
2909 | // task region to make sure threads_data fields are (re)initialized before | |||
2910 | // used. | |||
2911 | __kmp_acquire_bootstrap_lock(&task_team->tt.tt_threads_lock); | |||
2912 | ||||
2913 | if (!TCR_4(task_team->tt.tt_found_tasks)(task_team->tt.tt_found_tasks)) { | |||
2914 | // first thread to enable tasking | |||
2915 | kmp_team_t *team = thread->th.th_team; | |||
2916 | int i; | |||
2917 | ||||
2918 | is_init_thread = TRUE(!0); | |||
2919 | if (maxthreads < nthreads) { | |||
2920 | ||||
2921 | if (*threads_data_p != NULL__null) { | |||
2922 | kmp_thread_data_t *old_data = *threads_data_p; | |||
2923 | kmp_thread_data_t *new_data = NULL__null; | |||
2924 | ||||
2925 | KE_TRACE(if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d reallocating " "threads data for task_team %p, new_size = %d, old_size = %d\n" , __kmp_gtid_from_thread(thread), task_team, nthreads, maxthreads ); } | |||
2926 | 10,if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d reallocating " "threads data for task_team %p, new_size = %d, old_size = %d\n" , __kmp_gtid_from_thread(thread), task_team, nthreads, maxthreads ); } | |||
2927 | ("__kmp_realloc_task_threads_data: T#%d reallocating "if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d reallocating " "threads data for task_team %p, new_size = %d, old_size = %d\n" , __kmp_gtid_from_thread(thread), task_team, nthreads, maxthreads ); } | |||
2928 | "threads data for task_team %p, new_size = %d, old_size = %d\n",if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d reallocating " "threads data for task_team %p, new_size = %d, old_size = %d\n" , __kmp_gtid_from_thread(thread), task_team, nthreads, maxthreads ); } | |||
2929 | __kmp_gtid_from_thread(thread), task_team, nthreads, maxthreads))if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d reallocating " "threads data for task_team %p, new_size = %d, old_size = %d\n" , __kmp_gtid_from_thread(thread), task_team, nthreads, maxthreads ); }; | |||
2930 | // Reallocate threads_data to have more elements than current array | |||
2931 | // Cannot use __kmp_thread_realloc() because threads not around for | |||
2932 | // kmp_reap_task_team( ). Note all new array entries are initialized | |||
2933 | // to zero by __kmp_allocate(). | |||
2934 | new_data = (kmp_thread_data_t *)__kmp_allocate(___kmp_allocate((nthreads * sizeof(kmp_thread_data_t)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2935) | |||
2935 | nthreads * sizeof(kmp_thread_data_t))___kmp_allocate((nthreads * sizeof(kmp_thread_data_t)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2935); | |||
2936 | // copy old data to new data | |||
2937 | KMP_MEMCPY_S((void *)new_data, nthreads * sizeof(kmp_thread_data_t),memcpy((void *)new_data, (void *)old_data, maxthreads * sizeof (kmp_thread_data_t)) | |||
2938 | (void *)old_data, maxthreads * sizeof(kmp_thread_data_t))memcpy((void *)new_data, (void *)old_data, maxthreads * sizeof (kmp_thread_data_t)); | |||
2939 | ||||
2940 | #ifdef BUILD_TIED_TASK_STACK | |||
2941 | // GEH: Figure out if this is the right thing to do | |||
2942 | for (i = maxthreads; i < nthreads; i++) { | |||
2943 | kmp_thread_data_t *thread_data = &(*threads_data_p)[i]; | |||
2944 | __kmp_init_task_stack(__kmp_gtid_from_thread(thread), thread_data); | |||
2945 | } | |||
2946 | #endif // BUILD_TIED_TASK_STACK | |||
2947 | // Install the new data and free the old data | |||
2948 | (*threads_data_p) = new_data; | |||
2949 | __kmp_free(old_data)___kmp_free((old_data), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2949); | |||
2950 | } else { | |||
2951 | KE_TRACE(10, ("__kmp_realloc_task_threads_data: T#%d allocating "if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d allocating " "threads data for task_team %p, size = %d\n", __kmp_gtid_from_thread (thread), task_team, nthreads); } | |||
2952 | "threads data for task_team %p, size = %d\n",if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d allocating " "threads data for task_team %p, size = %d\n", __kmp_gtid_from_thread (thread), task_team, nthreads); } | |||
2953 | __kmp_gtid_from_thread(thread), task_team, nthreads))if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_realloc_task_threads_data: T#%d allocating " "threads data for task_team %p, size = %d\n", __kmp_gtid_from_thread (thread), task_team, nthreads); }; | |||
2954 | // Make the initial allocate for threads_data array, and zero entries | |||
2955 | // Cannot use __kmp_thread_calloc() because threads not around for | |||
2956 | // kmp_reap_task_team( ). | |||
2957 | ANNOTATE_IGNORE_WRITES_BEGIN(); | |||
2958 | *threads_data_p = (kmp_thread_data_t *)__kmp_allocate(___kmp_allocate((nthreads * sizeof(kmp_thread_data_t)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2959) | |||
2959 | nthreads * sizeof(kmp_thread_data_t))___kmp_allocate((nthreads * sizeof(kmp_thread_data_t)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2959); | |||
2960 | ANNOTATE_IGNORE_WRITES_END(); | |||
2961 | #ifdef BUILD_TIED_TASK_STACK | |||
2962 | // GEH: Figure out if this is the right thing to do | |||
2963 | for (i = 0; i < nthreads; i++) { | |||
2964 | kmp_thread_data_t *thread_data = &(*threads_data_p)[i]; | |||
2965 | __kmp_init_task_stack(__kmp_gtid_from_thread(thread), thread_data); | |||
2966 | } | |||
2967 | #endif // BUILD_TIED_TASK_STACK | |||
2968 | } | |||
2969 | task_team->tt.tt_max_threads = nthreads; | |||
2970 | } else { | |||
2971 | // If array has (more than) enough elements, go ahead and use it | |||
2972 | KMP_DEBUG_ASSERT(*threads_data_p != NULL)if (!(*threads_data_p != __null)) { __kmp_debug_assert("*threads_data_p != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 2972); }; | |||
2973 | } | |||
2974 | ||||
2975 | // initialize threads_data pointers back to thread_info structures | |||
2976 | for (i = 0; i < nthreads; i++) { | |||
2977 | kmp_thread_data_t *thread_data = &(*threads_data_p)[i]; | |||
2978 | thread_data->td.td_thr = team->t.t_threads[i]; | |||
2979 | ||||
2980 | if (thread_data->td.td_deque_last_stolen >= nthreads) { | |||
2981 | // The last stolen field survives across teams / barrier, and the number | |||
2982 | // of threads may have changed. It's possible (likely?) that a new | |||
2983 | // parallel region will exhibit the same behavior as previous region. | |||
2984 | thread_data->td.td_deque_last_stolen = -1; | |||
2985 | } | |||
2986 | } | |||
2987 | ||||
2988 | KMP_MB(); | |||
2989 | TCW_SYNC_4(task_team->tt.tt_found_tasks, TRUE)(task_team->tt.tt_found_tasks) = ((!0)); | |||
2990 | } | |||
2991 | ||||
2992 | __kmp_release_bootstrap_lock(&task_team->tt.tt_threads_lock); | |||
2993 | return is_init_thread; | |||
2994 | } | |||
2995 | ||||
2996 | // __kmp_free_task_threads_data: | |||
2997 | // Deallocates a threads_data array for a task team, including any attached | |||
2998 | // tasking deques. Only occurs at library shutdown. | |||
2999 | static void __kmp_free_task_threads_data(kmp_task_team_t *task_team) { | |||
3000 | __kmp_acquire_bootstrap_lock(&task_team->tt.tt_threads_lock); | |||
3001 | if (task_team->tt.tt_threads_data != NULL__null) { | |||
3002 | int i; | |||
3003 | for (i = 0; i < task_team->tt.tt_max_threads; i++) { | |||
3004 | __kmp_free_task_deque(&task_team->tt.tt_threads_data[i]); | |||
3005 | } | |||
3006 | __kmp_free(task_team->tt.tt_threads_data)___kmp_free((task_team->tt.tt_threads_data), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3006); | |||
3007 | task_team->tt.tt_threads_data = NULL__null; | |||
3008 | } | |||
3009 | __kmp_release_bootstrap_lock(&task_team->tt.tt_threads_lock); | |||
3010 | } | |||
3011 | ||||
3012 | // __kmp_allocate_task_team: | |||
3013 | // Allocates a task team associated with a specific team, taking it from | |||
3014 | // the global task team free list if possible. Also initializes data | |||
3015 | // structures. | |||
3016 | static kmp_task_team_t *__kmp_allocate_task_team(kmp_info_t *thread, | |||
3017 | kmp_team_t *team) { | |||
3018 | kmp_task_team_t *task_team = NULL__null; | |||
3019 | int nthreads; | |||
3020 | ||||
3021 | KA_TRACE(20, ("__kmp_allocate_task_team: T#%d entering; team = %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d entering; team = %p\n" , (thread ? __kmp_gtid_from_thread(thread) : -1), team); } | |||
3022 | (thread ? __kmp_gtid_from_thread(thread) : -1), team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d entering; team = %p\n" , (thread ? __kmp_gtid_from_thread(thread) : -1), team); }; | |||
3023 | ||||
3024 | if (TCR_PTR(__kmp_free_task_teams)((void *)(__kmp_free_task_teams)) != NULL__null) { | |||
3025 | // Take a task team from the task team pool | |||
3026 | __kmp_acquire_bootstrap_lock(&__kmp_task_team_lock); | |||
3027 | if (__kmp_free_task_teams != NULL__null) { | |||
3028 | task_team = __kmp_free_task_teams; | |||
3029 | TCW_PTR(__kmp_free_task_teams, task_team->tt.tt_next)((__kmp_free_task_teams)) = ((task_team->tt.tt_next)); | |||
3030 | task_team->tt.tt_next = NULL__null; | |||
3031 | } | |||
3032 | __kmp_release_bootstrap_lock(&__kmp_task_team_lock); | |||
3033 | } | |||
3034 | ||||
3035 | if (task_team == NULL__null) { | |||
3036 | KE_TRACE(10, ("__kmp_allocate_task_team: T#%d allocating "if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d allocating " "task team for team %p\n", __kmp_gtid_from_thread(thread), team ); } | |||
3037 | "task team for team %p\n",if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d allocating " "task team for team %p\n", __kmp_gtid_from_thread(thread), team ); } | |||
3038 | __kmp_gtid_from_thread(thread), team))if (kmp_e_debug >= 10) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d allocating " "task team for team %p\n", __kmp_gtid_from_thread(thread), team ); }; | |||
3039 | // Allocate a new task team if one is not available. | |||
3040 | // Cannot use __kmp_thread_malloc() because threads not around for | |||
3041 | // kmp_reap_task_team( ). | |||
3042 | task_team = (kmp_task_team_t *)__kmp_allocate(sizeof(kmp_task_team_t))___kmp_allocate((sizeof(kmp_task_team_t)), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3042); | |||
3043 | __kmp_init_bootstrap_lock(&task_team->tt.tt_threads_lock); | |||
3044 | // AC: __kmp_allocate zeroes returned memory | |||
3045 | // task_team -> tt.tt_threads_data = NULL; | |||
3046 | // task_team -> tt.tt_max_threads = 0; | |||
3047 | // task_team -> tt.tt_next = NULL; | |||
3048 | } | |||
3049 | ||||
3050 | TCW_4(task_team->tt.tt_found_tasks, FALSE)(task_team->tt.tt_found_tasks) = (0); | |||
3051 | #if OMP_45_ENABLED(50 >= 45) | |||
3052 | TCW_4(task_team->tt.tt_found_proxy_tasks, FALSE)(task_team->tt.tt_found_proxy_tasks) = (0); | |||
3053 | #endif | |||
3054 | task_team->tt.tt_nproc = nthreads = team->t.t_nproc; | |||
3055 | ||||
3056 | KMP_ATOMIC_ST_REL(&task_team->tt.tt_unfinished_threads, nthreads)(&task_team->tt.tt_unfinished_threads)->store(nthreads , std::memory_order_release); | |||
3057 | TCW_4(task_team->tt.tt_active, TRUE)(task_team->tt.tt_active) = ((!0)); | |||
3058 | ||||
3059 | KA_TRACE(20, ("__kmp_allocate_task_team: T#%d exiting; task_team = %p "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d exiting; task_team = %p " "unfinished_threads init'd to %d\n", (thread ? __kmp_gtid_from_thread (thread) : -1), task_team, (&task_team->tt.tt_unfinished_threads )->load(std::memory_order_relaxed)); } | |||
3060 | "unfinished_threads init'd to %d\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d exiting; task_team = %p " "unfinished_threads init'd to %d\n", (thread ? __kmp_gtid_from_thread (thread) : -1), task_team, (&task_team->tt.tt_unfinished_threads )->load(std::memory_order_relaxed)); } | |||
3061 | (thread ? __kmp_gtid_from_thread(thread) : -1), task_team,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d exiting; task_team = %p " "unfinished_threads init'd to %d\n", (thread ? __kmp_gtid_from_thread (thread) : -1), task_team, (&task_team->tt.tt_unfinished_threads )->load(std::memory_order_relaxed)); } | |||
3062 | KMP_ATOMIC_LD_RLX(&task_team->tt.tt_unfinished_threads)))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_allocate_task_team: T#%d exiting; task_team = %p " "unfinished_threads init'd to %d\n", (thread ? __kmp_gtid_from_thread (thread) : -1), task_team, (&task_team->tt.tt_unfinished_threads )->load(std::memory_order_relaxed)); }; | |||
3063 | return task_team; | |||
3064 | } | |||
3065 | ||||
3066 | // __kmp_free_task_team: | |||
3067 | // Frees the task team associated with a specific thread, and adds it | |||
3068 | // to the global task team free list. | |||
3069 | void __kmp_free_task_team(kmp_info_t *thread, kmp_task_team_t *task_team) { | |||
3070 | KA_TRACE(20, ("__kmp_free_task_team: T#%d task_team = %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_team: T#%d task_team = %p\n" , thread ? __kmp_gtid_from_thread(thread) : -1, task_team); } | |||
3071 | thread ? __kmp_gtid_from_thread(thread) : -1, task_team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_free_task_team: T#%d task_team = %p\n" , thread ? __kmp_gtid_from_thread(thread) : -1, task_team); }; | |||
3072 | ||||
3073 | // Put task team back on free list | |||
3074 | __kmp_acquire_bootstrap_lock(&__kmp_task_team_lock); | |||
3075 | ||||
3076 | KMP_DEBUG_ASSERT(task_team->tt.tt_next == NULL)if (!(task_team->tt.tt_next == __null)) { __kmp_debug_assert ("task_team->tt.tt_next == __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3076); }; | |||
3077 | task_team->tt.tt_next = __kmp_free_task_teams; | |||
3078 | TCW_PTR(__kmp_free_task_teams, task_team)((__kmp_free_task_teams)) = ((task_team)); | |||
3079 | ||||
3080 | __kmp_release_bootstrap_lock(&__kmp_task_team_lock); | |||
3081 | } | |||
3082 | ||||
3083 | // __kmp_reap_task_teams: | |||
3084 | // Free all the task teams on the task team free list. | |||
3085 | // Should only be done during library shutdown. | |||
3086 | // Cannot do anything that needs a thread structure or gtid since they are | |||
3087 | // already gone. | |||
3088 | void __kmp_reap_task_teams(void) { | |||
3089 | kmp_task_team_t *task_team; | |||
3090 | ||||
3091 | if (TCR_PTR(__kmp_free_task_teams)((void *)(__kmp_free_task_teams)) != NULL__null) { | |||
3092 | // Free all task_teams on the free list | |||
3093 | __kmp_acquire_bootstrap_lock(&__kmp_task_team_lock); | |||
3094 | while ((task_team = __kmp_free_task_teams) != NULL__null) { | |||
3095 | __kmp_free_task_teams = task_team->tt.tt_next; | |||
3096 | task_team->tt.tt_next = NULL__null; | |||
3097 | ||||
3098 | // Free threads_data if necessary | |||
3099 | if (task_team->tt.tt_threads_data != NULL__null) { | |||
3100 | __kmp_free_task_threads_data(task_team); | |||
3101 | } | |||
3102 | __kmp_free(task_team)___kmp_free((task_team), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3102); | |||
3103 | } | |||
3104 | __kmp_release_bootstrap_lock(&__kmp_task_team_lock); | |||
3105 | } | |||
3106 | } | |||
3107 | ||||
3108 | // __kmp_wait_to_unref_task_teams: | |||
3109 | // Some threads could still be in the fork barrier release code, possibly | |||
3110 | // trying to steal tasks. Wait for each thread to unreference its task team. | |||
3111 | void __kmp_wait_to_unref_task_teams(void) { | |||
3112 | kmp_info_t *thread; | |||
3113 | kmp_uint32 spins; | |||
3114 | int done; | |||
3115 | ||||
3116 | KMP_INIT_YIELD(spins){ (spins) = __kmp_yield_init; }; | |||
3117 | ||||
3118 | for (;;) { | |||
3119 | done = TRUE(!0); | |||
3120 | ||||
3121 | // TODO: GEH - this may be is wrong because some sync would be necessary | |||
3122 | // in case threads are added to the pool during the traversal. Need to | |||
3123 | // verify that lock for thread pool is held when calling this routine. | |||
3124 | for (thread = CCAST(kmp_info_t *, __kmp_thread_pool)const_cast<kmp_info_t *>(__kmp_thread_pool); thread != NULL__null; | |||
3125 | thread = thread->th.th_next_pool) { | |||
3126 | #if KMP_OS_WINDOWS0 | |||
3127 | DWORD exit_val; | |||
3128 | #endif | |||
3129 | if (TCR_PTR(thread->th.th_task_team)((void *)(thread->th.th_task_team)) == NULL__null) { | |||
3130 | KA_TRACE(10, ("__kmp_wait_to_unref_task_team: T#%d task_team == NULL\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: T#%d task_team == NULL\n" , __kmp_gtid_from_thread(thread)); } | |||
3131 | __kmp_gtid_from_thread(thread)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: T#%d task_team == NULL\n" , __kmp_gtid_from_thread(thread)); }; | |||
3132 | continue; | |||
3133 | } | |||
3134 | #if KMP_OS_WINDOWS0 | |||
3135 | // TODO: GEH - add this check for Linux* OS / OS X* as well? | |||
3136 | if (!__kmp_is_thread_alive(thread, &exit_val)) { | |||
3137 | thread->th.th_task_team = NULL__null; | |||
3138 | continue; | |||
3139 | } | |||
3140 | #endif | |||
3141 | ||||
3142 | done = FALSE0; // Because th_task_team pointer is not NULL for this thread | |||
3143 | ||||
3144 | KA_TRACE(10, ("__kmp_wait_to_unref_task_team: Waiting for T#%d to "if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: Waiting for T#%d to " "unreference task_team\n", __kmp_gtid_from_thread(thread)); } | |||
3145 | "unreference task_team\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: Waiting for T#%d to " "unreference task_team\n", __kmp_gtid_from_thread(thread)); } | |||
3146 | __kmp_gtid_from_thread(thread)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: Waiting for T#%d to " "unreference task_team\n", __kmp_gtid_from_thread(thread)); }; | |||
3147 | ||||
3148 | if (__kmp_dflt_blocktime != KMP_MAX_BLOCKTIME(2147483647)) { | |||
3149 | volatile void *sleep_loc; | |||
3150 | // If the thread is sleeping, awaken it. | |||
3151 | if ((sleep_loc = TCR_PTR(CCAST(void *, thread->th.th_sleep_loc))((void *)(const_cast<void *>(thread->th.th_sleep_loc )))) != | |||
3152 | NULL__null) { | |||
3153 | KA_TRACE(if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: T#%d waking up thread T#%d\n" , __kmp_gtid_from_thread(thread), __kmp_gtid_from_thread(thread )); } | |||
3154 | 10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: T#%d waking up thread T#%d\n" , __kmp_gtid_from_thread(thread), __kmp_gtid_from_thread(thread )); } | |||
3155 | ("__kmp_wait_to_unref_task_team: T#%d waking up thread T#%d\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: T#%d waking up thread T#%d\n" , __kmp_gtid_from_thread(thread), __kmp_gtid_from_thread(thread )); } | |||
3156 | __kmp_gtid_from_thread(thread), __kmp_gtid_from_thread(thread)))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_wait_to_unref_task_team: T#%d waking up thread T#%d\n" , __kmp_gtid_from_thread(thread), __kmp_gtid_from_thread(thread )); }; | |||
3157 | __kmp_null_resume_wrapper(__kmp_gtid_from_thread(thread), sleep_loc); | |||
3158 | } | |||
3159 | } | |||
3160 | } | |||
3161 | if (done) { | |||
3162 | break; | |||
3163 | } | |||
3164 | ||||
3165 | // If we are oversubscribed, or have waited a bit (and library mode is | |||
3166 | // throughput), yield. Pause is in the following code. | |||
3167 | KMP_YIELD(TCR_4(__kmp_nth) > __kmp_avail_proc){ __kmp_x86_pause(); __kmp_yield(((__kmp_nth) > __kmp_avail_proc )); }; | |||
3168 | KMP_YIELD_SPIN(spins){ __kmp_x86_pause(); (spins) -= 2; if (!(spins)) { __kmp_yield (1); (spins) = __kmp_yield_next; } }; // Yields only if KMP_LIBRARY=throughput | |||
3169 | } | |||
3170 | } | |||
3171 | ||||
3172 | // __kmp_task_team_setup: Create a task_team for the current team, but use | |||
3173 | // an already created, unused one if it already exists. | |||
3174 | void __kmp_task_team_setup(kmp_info_t *this_thr, kmp_team_t *team, int always) { | |||
3175 | KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec)if (!(__kmp_tasking_mode != tskm_immediate_exec)) { __kmp_debug_assert ("__kmp_tasking_mode != tskm_immediate_exec", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3175); }; | |||
3176 | ||||
3177 | // If this task_team hasn't been created yet, allocate it. It will be used in | |||
3178 | // the region after the next. | |||
3179 | // If it exists, it is the current task team and shouldn't be touched yet as | |||
3180 | // it may still be in use. | |||
3181 | if (team->t.t_task_team[this_thr->th.th_task_state] == NULL__null && | |||
3182 | (always || team->t.t_nproc > 1)) { | |||
3183 | team->t.t_task_team[this_thr->th.th_task_state] = | |||
3184 | __kmp_allocate_task_team(this_thr, team); | |||
3185 | KA_TRACE(20, ("__kmp_task_team_setup: Master T#%d created new task_team %p "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created new task_team %p " "for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[this_thr->th.th_task_state], ((team != __null) ? team->t.t_id : -1), this_thr->th.th_task_state ); } | |||
3186 | "for team %d at parity=%d\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created new task_team %p " "for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[this_thr->th.th_task_state], ((team != __null) ? team->t.t_id : -1), this_thr->th.th_task_state ); } | |||
3187 | __kmp_gtid_from_thread(this_thr),if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created new task_team %p " "for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[this_thr->th.th_task_state], ((team != __null) ? team->t.t_id : -1), this_thr->th.th_task_state ); } | |||
3188 | team->t.t_task_team[this_thr->th.th_task_state],if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created new task_team %p " "for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[this_thr->th.th_task_state], ((team != __null) ? team->t.t_id : -1), this_thr->th.th_task_state ); } | |||
3189 | ((team != NULL) ? team->t.t_id : -1),if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created new task_team %p " "for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[this_thr->th.th_task_state], ((team != __null) ? team->t.t_id : -1), this_thr->th.th_task_state ); } | |||
3190 | this_thr->th.th_task_state))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created new task_team %p " "for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[this_thr->th.th_task_state], ((team != __null) ? team->t.t_id : -1), this_thr->th.th_task_state ); }; | |||
3191 | } | |||
3192 | ||||
3193 | // After threads exit the release, they will call sync, and then point to this | |||
3194 | // other task_team; make sure it is allocated and properly initialized. As | |||
3195 | // threads spin in the barrier release phase, they will continue to use the | |||
3196 | // previous task_team struct(above), until they receive the signal to stop | |||
3197 | // checking for tasks (they can't safely reference the kmp_team_t struct, | |||
3198 | // which could be reallocated by the master thread). No task teams are formed | |||
3199 | // for serialized teams. | |||
3200 | if (team->t.t_nproc > 1) { | |||
3201 | int other_team = 1 - this_thr->th.th_task_state; | |||
3202 | if (team->t.t_task_team[other_team] == NULL__null) { // setup other team as well | |||
3203 | team->t.t_task_team[other_team] = | |||
3204 | __kmp_allocate_task_team(this_thr, team); | |||
3205 | KA_TRACE(20, ("__kmp_task_team_setup: Master T#%d created second new "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created second new " "task_team %p for team %d at parity=%d\n", __kmp_gtid_from_thread (this_thr), team->t.t_task_team[other_team], ((team != __null ) ? team->t.t_id : -1), other_team); } | |||
3206 | "task_team %p for team %d at parity=%d\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created second new " "task_team %p for team %d at parity=%d\n", __kmp_gtid_from_thread (this_thr), team->t.t_task_team[other_team], ((team != __null ) ? team->t.t_id : -1), other_team); } | |||
3207 | __kmp_gtid_from_thread(this_thr),if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created second new " "task_team %p for team %d at parity=%d\n", __kmp_gtid_from_thread (this_thr), team->t.t_task_team[other_team], ((team != __null ) ? team->t.t_id : -1), other_team); } | |||
3208 | team->t.t_task_team[other_team],if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created second new " "task_team %p for team %d at parity=%d\n", __kmp_gtid_from_thread (this_thr), team->t.t_task_team[other_team], ((team != __null ) ? team->t.t_id : -1), other_team); } | |||
3209 | ((team != NULL) ? team->t.t_id : -1), other_team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d created second new " "task_team %p for team %d at parity=%d\n", __kmp_gtid_from_thread (this_thr), team->t.t_task_team[other_team], ((team != __null ) ? team->t.t_id : -1), other_team); }; | |||
3210 | } else { // Leave the old task team struct in place for the upcoming region; | |||
3211 | // adjust as needed | |||
3212 | kmp_task_team_t *task_team = team->t.t_task_team[other_team]; | |||
3213 | if (!task_team->tt.tt_active || | |||
3214 | team->t.t_nproc != task_team->tt.tt_nproc) { | |||
3215 | TCW_4(task_team->tt.tt_nproc, team->t.t_nproc)(task_team->tt.tt_nproc) = (team->t.t_nproc); | |||
3216 | TCW_4(task_team->tt.tt_found_tasks, FALSE)(task_team->tt.tt_found_tasks) = (0); | |||
3217 | #if OMP_45_ENABLED(50 >= 45) | |||
3218 | TCW_4(task_team->tt.tt_found_proxy_tasks, FALSE)(task_team->tt.tt_found_proxy_tasks) = (0); | |||
3219 | #endif | |||
3220 | KMP_ATOMIC_ST_REL(&task_team->tt.tt_unfinished_threads,(&task_team->tt.tt_unfinished_threads)->store(team-> t.t_nproc, std::memory_order_release) | |||
3221 | team->t.t_nproc)(&task_team->tt.tt_unfinished_threads)->store(team-> t.t_nproc, std::memory_order_release); | |||
3222 | TCW_4(task_team->tt.tt_active, TRUE)(task_team->tt.tt_active) = ((!0)); | |||
3223 | } | |||
3224 | // if team size has changed, the first thread to enable tasking will | |||
3225 | // realloc threads_data if necessary | |||
3226 | KA_TRACE(20, ("__kmp_task_team_setup: Master T#%d reset next task_team "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d reset next task_team " "%p for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[other_team], ((team != __null) ? team ->t.t_id : -1), other_team); } | |||
3227 | "%p for team %d at parity=%d\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d reset next task_team " "%p for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[other_team], ((team != __null) ? team ->t.t_id : -1), other_team); } | |||
3228 | __kmp_gtid_from_thread(this_thr),if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d reset next task_team " "%p for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[other_team], ((team != __null) ? team ->t.t_id : -1), other_team); } | |||
3229 | team->t.t_task_team[other_team],if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d reset next task_team " "%p for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[other_team], ((team != __null) ? team ->t.t_id : -1), other_team); } | |||
3230 | ((team != NULL) ? team->t.t_id : -1), other_team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_setup: Master T#%d reset next task_team " "%p for team %d at parity=%d\n", __kmp_gtid_from_thread(this_thr ), team->t.t_task_team[other_team], ((team != __null) ? team ->t.t_id : -1), other_team); }; | |||
3231 | } | |||
3232 | } | |||
3233 | } | |||
3234 | ||||
3235 | // __kmp_task_team_sync: Propagation of task team data from team to threads | |||
3236 | // which happens just after the release phase of a team barrier. This may be | |||
3237 | // called by any thread, but only for teams with # threads > 1. | |||
3238 | void __kmp_task_team_sync(kmp_info_t *this_thr, kmp_team_t *team) { | |||
3239 | KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec)if (!(__kmp_tasking_mode != tskm_immediate_exec)) { __kmp_debug_assert ("__kmp_tasking_mode != tskm_immediate_exec", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3239); }; | |||
3240 | ||||
3241 | // Toggle the th_task_state field, to switch which task_team this thread | |||
3242 | // refers to | |||
3243 | this_thr->th.th_task_state = 1 - this_thr->th.th_task_state; | |||
3244 | // It is now safe to propagate the task team pointer from the team struct to | |||
3245 | // the current thread. | |||
3246 | TCW_PTR(this_thr->th.th_task_team,((this_thr->th.th_task_team)) = ((team->t.t_task_team[this_thr ->th.th_task_state])) | |||
3247 | team->t.t_task_team[this_thr->th.th_task_state])((this_thr->th.th_task_team)) = ((team->t.t_task_team[this_thr ->th.th_task_state])); | |||
3248 | KA_TRACE(20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_sync: Thread T#%d task team switched to task_team " "%p from Team #%d (parity=%d)\n", __kmp_gtid_from_thread(this_thr ), this_thr->th.th_task_team, ((team != __null) ? team-> t.t_id : -1), this_thr->th.th_task_state); } | |||
3249 | ("__kmp_task_team_sync: Thread T#%d task team switched to task_team "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_sync: Thread T#%d task team switched to task_team " "%p from Team #%d (parity=%d)\n", __kmp_gtid_from_thread(this_thr ), this_thr->th.th_task_team, ((team != __null) ? team-> t.t_id : -1), this_thr->th.th_task_state); } | |||
3250 | "%p from Team #%d (parity=%d)\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_sync: Thread T#%d task team switched to task_team " "%p from Team #%d (parity=%d)\n", __kmp_gtid_from_thread(this_thr ), this_thr->th.th_task_team, ((team != __null) ? team-> t.t_id : -1), this_thr->th.th_task_state); } | |||
3251 | __kmp_gtid_from_thread(this_thr), this_thr->th.th_task_team,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_sync: Thread T#%d task team switched to task_team " "%p from Team #%d (parity=%d)\n", __kmp_gtid_from_thread(this_thr ), this_thr->th.th_task_team, ((team != __null) ? team-> t.t_id : -1), this_thr->th.th_task_state); } | |||
3252 | ((team != NULL) ? team->t.t_id : -1), this_thr->th.th_task_state))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_sync: Thread T#%d task team switched to task_team " "%p from Team #%d (parity=%d)\n", __kmp_gtid_from_thread(this_thr ), this_thr->th.th_task_team, ((team != __null) ? team-> t.t_id : -1), this_thr->th.th_task_state); }; | |||
3253 | } | |||
3254 | ||||
3255 | // __kmp_task_team_wait: Master thread waits for outstanding tasks after the | |||
3256 | // barrier gather phase. Only called by master thread if #threads in team > 1 or | |||
3257 | // if proxy tasks were created. | |||
3258 | // | |||
3259 | // wait is a flag that defaults to 1 (see kmp.h), but waiting can be turned off | |||
3260 | // by passing in 0 optionally as the last argument. When wait is zero, master | |||
3261 | // thread does not wait for unfinished_threads to reach 0. | |||
3262 | void __kmp_task_team_wait( | |||
3263 | kmp_info_t *this_thr, | |||
3264 | kmp_team_t *team USE_ITT_BUILD_ARG(void *itt_sync_obj), void *itt_sync_obj, int wait) { | |||
3265 | kmp_task_team_t *task_team = team->t.t_task_team[this_thr->th.th_task_state]; | |||
3266 | ||||
3267 | KMP_DEBUG_ASSERT(__kmp_tasking_mode != tskm_immediate_exec)if (!(__kmp_tasking_mode != tskm_immediate_exec)) { __kmp_debug_assert ("__kmp_tasking_mode != tskm_immediate_exec", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3267); }; | |||
3268 | KMP_DEBUG_ASSERT(task_team == this_thr->th.th_task_team)if (!(task_team == this_thr->th.th_task_team)) { __kmp_debug_assert ("task_team == this_thr->th.th_task_team", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3268); }; | |||
3269 | ||||
3270 | if ((task_team != NULL__null) && KMP_TASKING_ENABLED(task_team)(((task_team)->tt.tt_found_tasks) == (!0))) { | |||
3271 | if (wait) { | |||
3272 | KA_TRACE(20, ("__kmp_task_team_wait: Master T#%d waiting for all tasks "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d waiting for all tasks " "(for unfinished_threads to reach 0) on task_team = %p\n", __kmp_gtid_from_thread (this_thr), task_team); } | |||
3273 | "(for unfinished_threads to reach 0) on task_team = %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d waiting for all tasks " "(for unfinished_threads to reach 0) on task_team = %p\n", __kmp_gtid_from_thread (this_thr), task_team); } | |||
3274 | __kmp_gtid_from_thread(this_thr), task_team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d waiting for all tasks " "(for unfinished_threads to reach 0) on task_team = %p\n", __kmp_gtid_from_thread (this_thr), task_team); }; | |||
3275 | // Worker threads may have dropped through to release phase, but could | |||
3276 | // still be executing tasks. Wait here for tasks to complete. To avoid | |||
3277 | // memory contention, only master thread checks termination condition. | |||
3278 | kmp_flag_32 flag(RCAST(std::atomic<kmp_uint32> *,reinterpret_cast<std::atomic<kmp_uint32> *>(& task_team->tt.tt_unfinished_threads) | |||
3279 | &task_team->tt.tt_unfinished_threads)reinterpret_cast<std::atomic<kmp_uint32> *>(& task_team->tt.tt_unfinished_threads), | |||
3280 | 0U); | |||
3281 | flag.wait(this_thr, TRUE(!0) USE_ITT_BUILD_ARG(itt_sync_obj), itt_sync_obj); | |||
3282 | } | |||
3283 | // Deactivate the old task team, so that the worker threads will stop | |||
3284 | // referencing it while spinning. | |||
3285 | KA_TRACE(if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d deactivating task_team %p: " "setting active to false, setting local and team's pointer to NULL\n" , __kmp_gtid_from_thread(this_thr), task_team); } | |||
3286 | 20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d deactivating task_team %p: " "setting active to false, setting local and team's pointer to NULL\n" , __kmp_gtid_from_thread(this_thr), task_team); } | |||
3287 | ("__kmp_task_team_wait: Master T#%d deactivating task_team %p: "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d deactivating task_team %p: " "setting active to false, setting local and team's pointer to NULL\n" , __kmp_gtid_from_thread(this_thr), task_team); } | |||
3288 | "setting active to false, setting local and team's pointer to NULL\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d deactivating task_team %p: " "setting active to false, setting local and team's pointer to NULL\n" , __kmp_gtid_from_thread(this_thr), task_team); } | |||
3289 | __kmp_gtid_from_thread(this_thr), task_team))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_team_wait: Master T#%d deactivating task_team %p: " "setting active to false, setting local and team's pointer to NULL\n" , __kmp_gtid_from_thread(this_thr), task_team); }; | |||
3290 | #if OMP_45_ENABLED(50 >= 45) | |||
3291 | KMP_DEBUG_ASSERT(task_team->tt.tt_nproc > 1 ||if (!(task_team->tt.tt_nproc > 1 || task_team->tt.tt_found_proxy_tasks == (!0))) { __kmp_debug_assert("task_team->tt.tt_nproc > 1 || task_team->tt.tt_found_proxy_tasks == (!0)" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3292); } | |||
3292 | task_team->tt.tt_found_proxy_tasks == TRUE)if (!(task_team->tt.tt_nproc > 1 || task_team->tt.tt_found_proxy_tasks == (!0))) { __kmp_debug_assert("task_team->tt.tt_nproc > 1 || task_team->tt.tt_found_proxy_tasks == (!0)" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3292); }; | |||
3293 | TCW_SYNC_4(task_team->tt.tt_found_proxy_tasks, FALSE)(task_team->tt.tt_found_proxy_tasks) = (0); | |||
3294 | #else | |||
3295 | KMP_DEBUG_ASSERT(task_team->tt.tt_nproc > 1)if (!(task_team->tt.tt_nproc > 1)) { __kmp_debug_assert ("task_team->tt.tt_nproc > 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3295); }; | |||
3296 | #endif | |||
3297 | KMP_CHECK_UPDATE(task_team->tt.tt_untied_task_encountered, 0)if ((task_team->tt.tt_untied_task_encountered) != (0)) (task_team ->tt.tt_untied_task_encountered) = (0); | |||
3298 | TCW_SYNC_4(task_team->tt.tt_active, FALSE)(task_team->tt.tt_active) = (0); | |||
3299 | KMP_MB(); | |||
3300 | ||||
3301 | TCW_PTR(this_thr->th.th_task_team, NULL)((this_thr->th.th_task_team)) = ((__null)); | |||
3302 | } | |||
3303 | } | |||
3304 | ||||
3305 | // __kmp_tasking_barrier: | |||
3306 | // This routine may only called when __kmp_tasking_mode == tskm_extra_barrier. | |||
3307 | // Internal function to execute all tasks prior to a regular barrier or a join | |||
3308 | // barrier. It is a full barrier itself, which unfortunately turns regular | |||
3309 | // barriers into double barriers and join barriers into 1 1/2 barriers. | |||
3310 | void __kmp_tasking_barrier(kmp_team_t *team, kmp_info_t *thread, int gtid) { | |||
3311 | std::atomic<kmp_uint32> *spin = RCAST(reinterpret_cast<std::atomic<kmp_uint32> *>(& team->t.t_task_team[thread->th.th_task_state]->tt.tt_unfinished_threads ) | |||
3312 | std::atomic<kmp_uint32> *,reinterpret_cast<std::atomic<kmp_uint32> *>(& team->t.t_task_team[thread->th.th_task_state]->tt.tt_unfinished_threads ) | |||
3313 | &team->t.t_task_team[thread->th.th_task_state]->tt.tt_unfinished_threads)reinterpret_cast<std::atomic<kmp_uint32> *>(& team->t.t_task_team[thread->th.th_task_state]->tt.tt_unfinished_threads ); | |||
3314 | int flag = FALSE0; | |||
3315 | KMP_DEBUG_ASSERT(__kmp_tasking_mode == tskm_extra_barrier)if (!(__kmp_tasking_mode == tskm_extra_barrier)) { __kmp_debug_assert ("__kmp_tasking_mode == tskm_extra_barrier", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3315); }; | |||
3316 | ||||
3317 | #if USE_ITT_BUILD1 | |||
3318 | KMP_FSYNC_SPIN_INIT(spin, NULL)int sync_iters = 0; if (__kmp_itt_fsync_prepare_ptr__3_0) { if (spin == __null) { spin = __null; } } __asm__ __volatile__("movl %0, %%ebx; .byte 0x64, 0x67, 0x90 " ::"i"(0x4376) : "%ebx"); | |||
3319 | #endif /* USE_ITT_BUILD */ | |||
3320 | kmp_flag_32 spin_flag(spin, 0U); | |||
3321 | while (!spin_flag.execute_tasks(thread, gtid, TRUE(!0), | |||
3322 | &flag USE_ITT_BUILD_ARG(NULL), __null, 0)) { | |||
3323 | #if USE_ITT_BUILD1 | |||
3324 | // TODO: What about itt_sync_obj?? | |||
3325 | KMP_FSYNC_SPIN_PREPARE(RCAST(void *, spin))do { if (__kmp_itt_fsync_prepare_ptr__3_0 && sync_iters < __kmp_itt_prepare_delay) { ++sync_iters; if (sync_iters >= __kmp_itt_prepare_delay) { (!__kmp_itt_fsync_prepare_ptr__3_0 ) ? (void)0 : __kmp_itt_fsync_prepare_ptr__3_0((void *)((void *)reinterpret_cast<void *>(spin))); } } } while (0); | |||
3326 | #endif /* USE_ITT_BUILD */ | |||
3327 | ||||
3328 | if (TCR_4(__kmp_global.g.g_done)(__kmp_global.g.g_done)) { | |||
3329 | if (__kmp_global.g.g_abort) | |||
3330 | __kmp_abort_thread(); | |||
3331 | break; | |||
3332 | } | |||
3333 | KMP_YIELD(TRUE){ __kmp_x86_pause(); __kmp_yield(((!0))); }; // GH: We always yield here | |||
3334 | } | |||
3335 | #if USE_ITT_BUILD1 | |||
3336 | KMP_FSYNC_SPIN_ACQUIRED(RCAST(void *, spin))do { __asm__ __volatile__("movl %0, %%ebx; .byte 0x64, 0x67, 0x90 " ::"i"(0x4377) : "%ebx"); if (sync_iters >= __kmp_itt_prepare_delay ) { (!__kmp_itt_fsync_acquired_ptr__3_0) ? (void)0 : __kmp_itt_fsync_acquired_ptr__3_0 ((void *)((void *)reinterpret_cast<void *>(spin))); } } while (0); | |||
3337 | #endif /* USE_ITT_BUILD */ | |||
3338 | } | |||
3339 | ||||
3340 | #if OMP_45_ENABLED(50 >= 45) | |||
3341 | ||||
3342 | // __kmp_give_task puts a task into a given thread queue if: | |||
3343 | // - the queue for that thread was created | |||
3344 | // - there's space in that queue | |||
3345 | // Because of this, __kmp_push_task needs to check if there's space after | |||
3346 | // getting the lock | |||
3347 | static bool __kmp_give_task(kmp_info_t *thread, kmp_int32 tid, kmp_task_t *task, | |||
3348 | kmp_int32 pass) { | |||
3349 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
3350 | kmp_task_team_t *task_team = taskdata->td_task_team; | |||
3351 | ||||
3352 | KA_TRACE(20, ("__kmp_give_task: trying to give task %p to thread %d.\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_give_task: trying to give task %p to thread %d.\n" , taskdata, tid); } | |||
3353 | taskdata, tid))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_give_task: trying to give task %p to thread %d.\n" , taskdata, tid); }; | |||
3354 | ||||
3355 | // If task_team is NULL something went really bad... | |||
3356 | KMP_DEBUG_ASSERT(task_team != NULL)if (!(task_team != __null)) { __kmp_debug_assert("task_team != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3356); }; | |||
3357 | ||||
3358 | bool result = false; | |||
3359 | kmp_thread_data_t *thread_data = &task_team->tt.tt_threads_data[tid]; | |||
3360 | ||||
3361 | if (thread_data->td.td_deque == NULL__null) { | |||
3362 | // There's no queue in this thread, go find another one | |||
3363 | // We're guaranteed that at least one thread has a queue | |||
3364 | KA_TRACE(30,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: thread %d has no queue while giving task %p.\n" , tid, taskdata); } | |||
3365 | ("__kmp_give_task: thread %d has no queue while giving task %p.\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: thread %d has no queue while giving task %p.\n" , tid, taskdata); } | |||
3366 | tid, taskdata))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: thread %d has no queue while giving task %p.\n" , tid, taskdata); }; | |||
3367 | return result; | |||
3368 | } | |||
3369 | ||||
3370 | if (TCR_4(thread_data->td.td_deque_ntasks)(thread_data->td.td_deque_ntasks) >= | |||
3371 | TASK_DEQUE_SIZE(thread_data->td)((thread_data->td).td_deque_size)) { | |||
3372 | KA_TRACE(if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: queue is full while giving task %p to thread %d.\n" , taskdata, tid); } | |||
3373 | 30,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: queue is full while giving task %p to thread %d.\n" , taskdata, tid); } | |||
3374 | ("__kmp_give_task: queue is full while giving task %p to thread %d.\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: queue is full while giving task %p to thread %d.\n" , taskdata, tid); } | |||
3375 | taskdata, tid))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: queue is full while giving task %p to thread %d.\n" , taskdata, tid); }; | |||
3376 | ||||
3377 | // if this deque is bigger than the pass ratio give a chance to another | |||
3378 | // thread | |||
3379 | if (TASK_DEQUE_SIZE(thread_data->td)((thread_data->td).td_deque_size) / INITIAL_TASK_DEQUE_SIZE(1 << 8) >= pass) | |||
3380 | return result; | |||
3381 | ||||
3382 | __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
3383 | __kmp_realloc_task_deque(thread, thread_data); | |||
3384 | ||||
3385 | } else { | |||
3386 | ||||
3387 | __kmp_acquire_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
3388 | ||||
3389 | if (TCR_4(thread_data->td.td_deque_ntasks)(thread_data->td.td_deque_ntasks) >= | |||
3390 | TASK_DEQUE_SIZE(thread_data->td)((thread_data->td).td_deque_size)) { | |||
3391 | KA_TRACE(30, ("__kmp_give_task: queue is full while giving task %p to "if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: queue is full while giving task %p to " "thread %d.\n", taskdata, tid); } | |||
3392 | "thread %d.\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: queue is full while giving task %p to " "thread %d.\n", taskdata, tid); } | |||
3393 | taskdata, tid))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: queue is full while giving task %p to " "thread %d.\n", taskdata, tid); }; | |||
3394 | ||||
3395 | // if this deque is bigger than the pass ratio give a chance to another | |||
3396 | // thread | |||
3397 | if (TASK_DEQUE_SIZE(thread_data->td)((thread_data->td).td_deque_size) / INITIAL_TASK_DEQUE_SIZE(1 << 8) >= pass) | |||
3398 | goto release_and_exit; | |||
3399 | ||||
3400 | __kmp_realloc_task_deque(thread, thread_data); | |||
3401 | } | |||
3402 | } | |||
3403 | ||||
3404 | // lock is held here, and there is space in the deque | |||
3405 | ||||
3406 | thread_data->td.td_deque[thread_data->td.td_deque_tail] = taskdata; | |||
3407 | // Wrap index. | |||
3408 | thread_data->td.td_deque_tail = | |||
3409 | (thread_data->td.td_deque_tail + 1) & TASK_DEQUE_MASK(thread_data->td)((thread_data->td).td_deque_size - 1); | |||
3410 | TCW_4(thread_data->td.td_deque_ntasks,(thread_data->td.td_deque_ntasks) = ((thread_data->td.td_deque_ntasks ) + 1) | |||
3411 | TCR_4(thread_data->td.td_deque_ntasks) + 1)(thread_data->td.td_deque_ntasks) = ((thread_data->td.td_deque_ntasks ) + 1); | |||
3412 | ||||
3413 | result = true; | |||
3414 | KA_TRACE(30, ("__kmp_give_task: successfully gave task %p to thread %d.\n",if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: successfully gave task %p to thread %d.\n" , taskdata, tid); } | |||
3415 | taskdata, tid))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_give_task: successfully gave task %p to thread %d.\n" , taskdata, tid); }; | |||
3416 | ||||
3417 | release_and_exit: | |||
3418 | __kmp_release_bootstrap_lock(&thread_data->td.td_deque_lock); | |||
3419 | ||||
3420 | return result; | |||
3421 | } | |||
3422 | ||||
3423 | /* The finish of the proxy tasks is divided in two pieces: | |||
3424 | - the top half is the one that can be done from a thread outside the team | |||
3425 | - the bottom half must be run from a them within the team | |||
3426 | ||||
3427 | In order to run the bottom half the task gets queued back into one of the | |||
3428 | threads of the team. Once the td_incomplete_child_task counter of the parent | |||
3429 | is decremented the threads can leave the barriers. So, the bottom half needs | |||
3430 | to be queued before the counter is decremented. The top half is therefore | |||
3431 | divided in two parts: | |||
3432 | - things that can be run before queuing the bottom half | |||
3433 | - things that must be run after queuing the bottom half | |||
3434 | ||||
3435 | This creates a second race as the bottom half can free the task before the | |||
3436 | second top half is executed. To avoid this we use the | |||
3437 | td_incomplete_child_task of the proxy task to synchronize the top and bottom | |||
3438 | half. */ | |||
3439 | static void __kmp_first_top_half_finish_proxy(kmp_taskdata_t *taskdata) { | |||
3440 | KMP_DEBUG_ASSERT(taskdata->td_flags.tasktype == TASK_EXPLICIT)if (!(taskdata->td_flags.tasktype == 1)) { __kmp_debug_assert ("taskdata->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3440); }; | |||
3441 | KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY)if (!(taskdata->td_flags.proxy == 1)) { __kmp_debug_assert ("taskdata->td_flags.proxy == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3441); }; | |||
3442 | KMP_DEBUG_ASSERT(taskdata->td_flags.complete == 0)if (!(taskdata->td_flags.complete == 0)) { __kmp_debug_assert ("taskdata->td_flags.complete == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3442); }; | |||
3443 | KMP_DEBUG_ASSERT(taskdata->td_flags.freed == 0)if (!(taskdata->td_flags.freed == 0)) { __kmp_debug_assert ("taskdata->td_flags.freed == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3443); }; | |||
3444 | ||||
3445 | taskdata->td_flags.complete = 1; // mark the task as completed | |||
3446 | ||||
3447 | if (taskdata->td_taskgroup) | |||
3448 | KMP_ATOMIC_DEC(&taskdata->td_taskgroup->count)(&taskdata->td_taskgroup->count)->fetch_sub(1, std ::memory_order_acq_rel); | |||
3449 | ||||
3450 | // Create an imaginary children for this task so the bottom half cannot | |||
3451 | // release the task before we have completed the second top half | |||
3452 | KMP_ATOMIC_INC(&taskdata->td_incomplete_child_tasks)(&taskdata->td_incomplete_child_tasks)->fetch_add(1 , std::memory_order_acq_rel); | |||
3453 | } | |||
3454 | ||||
3455 | static void __kmp_second_top_half_finish_proxy(kmp_taskdata_t *taskdata) { | |||
3456 | kmp_int32 children = 0; | |||
3457 | ||||
3458 | // Predecrement simulated by "- 1" calculation | |||
3459 | children = | |||
3460 | KMP_ATOMIC_DEC(&taskdata->td_parent->td_incomplete_child_tasks)(&taskdata->td_parent->td_incomplete_child_tasks)-> fetch_sub(1, std::memory_order_acq_rel) - 1; | |||
3461 | KMP_DEBUG_ASSERT(children >= 0)if (!(children >= 0)) { __kmp_debug_assert("children >= 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3461); }; | |||
3462 | ||||
3463 | // Remove the imaginary children | |||
3464 | KMP_ATOMIC_DEC(&taskdata->td_incomplete_child_tasks)(&taskdata->td_incomplete_child_tasks)->fetch_sub(1 , std::memory_order_acq_rel); | |||
3465 | } | |||
3466 | ||||
3467 | static void __kmp_bottom_half_finish_proxy(kmp_int32 gtid, kmp_task_t *ptask) { | |||
3468 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(ptask)(((kmp_taskdata_t *)ptask) - 1); | |||
3469 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
3470 | ||||
3471 | KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY)if (!(taskdata->td_flags.proxy == 1)) { __kmp_debug_assert ("taskdata->td_flags.proxy == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3471); }; | |||
3472 | KMP_DEBUG_ASSERT(taskdata->td_flags.complete ==if (!(taskdata->td_flags.complete == 1)) { __kmp_debug_assert ("taskdata->td_flags.complete == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3473); } | |||
3473 | 1)if (!(taskdata->td_flags.complete == 1)) { __kmp_debug_assert ("taskdata->td_flags.complete == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3473); }; // top half must run before bottom half | |||
3474 | ||||
3475 | // We need to wait to make sure the top half is finished | |||
3476 | // Spinning here should be ok as this should happen quickly | |||
3477 | while (KMP_ATOMIC_LD_ACQ(&taskdata->td_incomplete_child_tasks)(&taskdata->td_incomplete_child_tasks)->load(std::memory_order_acquire ) > 0) | |||
3478 | ; | |||
3479 | ||||
3480 | __kmp_release_deps(gtid, taskdata); | |||
3481 | __kmp_free_task_and_ancestors(gtid, taskdata, thread); | |||
3482 | } | |||
3483 | ||||
3484 | /*! | |||
3485 | @ingroup TASKING | |||
3486 | @param gtid Global Thread ID of encountering thread | |||
3487 | @param ptask Task which execution is completed | |||
3488 | ||||
3489 | Execute the completation of a proxy task from a thread of that is part of the | |||
3490 | team. Run first and bottom halves directly. | |||
3491 | */ | |||
3492 | void __kmpc_proxy_task_completed(kmp_int32 gtid, kmp_task_t *ptask) { | |||
3493 | KMP_DEBUG_ASSERT(ptask != NULL)if (!(ptask != __null)) { __kmp_debug_assert("ptask != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3493); }; | |||
3494 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(ptask)(((kmp_taskdata_t *)ptask) - 1); | |||
3495 | KA_TRACE(if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed(enter): T#%d proxy task %p completing\n" , gtid, taskdata); } | |||
3496 | 10, ("__kmp_proxy_task_completed(enter): T#%d proxy task %p completing\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed(enter): T#%d proxy task %p completing\n" , gtid, taskdata); } | |||
3497 | gtid, taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed(enter): T#%d proxy task %p completing\n" , gtid, taskdata); }; | |||
3498 | ||||
3499 | KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY)if (!(taskdata->td_flags.proxy == 1)) { __kmp_debug_assert ("taskdata->td_flags.proxy == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3499); }; | |||
3500 | ||||
3501 | __kmp_first_top_half_finish_proxy(taskdata); | |||
3502 | __kmp_second_top_half_finish_proxy(taskdata); | |||
3503 | __kmp_bottom_half_finish_proxy(gtid, ptask); | |||
3504 | ||||
3505 | KA_TRACE(10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed(exit): T#%d proxy task %p completing\n" , gtid, taskdata); } | |||
3506 | ("__kmp_proxy_task_completed(exit): T#%d proxy task %p completing\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed(exit): T#%d proxy task %p completing\n" , gtid, taskdata); } | |||
3507 | gtid, taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed(exit): T#%d proxy task %p completing\n" , gtid, taskdata); }; | |||
3508 | } | |||
3509 | ||||
3510 | /*! | |||
3511 | @ingroup TASKING | |||
3512 | @param ptask Task which execution is completed | |||
3513 | ||||
3514 | Execute the completation of a proxy task from a thread that could not belong to | |||
3515 | the team. | |||
3516 | */ | |||
3517 | void __kmpc_proxy_task_completed_ooo(kmp_task_t *ptask) { | |||
3518 | KMP_DEBUG_ASSERT(ptask != NULL)if (!(ptask != __null)) { __kmp_debug_assert("ptask != __null" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3518); }; | |||
3519 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(ptask)(((kmp_taskdata_t *)ptask) - 1); | |||
3520 | ||||
3521 | KA_TRACE(if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(enter): proxy task completing ooo %p\n" , taskdata); } | |||
3522 | 10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(enter): proxy task completing ooo %p\n" , taskdata); } | |||
3523 | ("__kmp_proxy_task_completed_ooo(enter): proxy task completing ooo %p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(enter): proxy task completing ooo %p\n" , taskdata); } | |||
3524 | taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(enter): proxy task completing ooo %p\n" , taskdata); }; | |||
3525 | ||||
3526 | KMP_DEBUG_ASSERT(taskdata->td_flags.proxy == TASK_PROXY)if (!(taskdata->td_flags.proxy == 1)) { __kmp_debug_assert ("taskdata->td_flags.proxy == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3526); }; | |||
3527 | ||||
3528 | __kmp_first_top_half_finish_proxy(taskdata); | |||
3529 | ||||
3530 | // Enqueue task to complete bottom half completion from a thread within the | |||
3531 | // corresponding team | |||
3532 | kmp_team_t *team = taskdata->td_team; | |||
3533 | kmp_int32 nthreads = team->t.t_nproc; | |||
3534 | kmp_info_t *thread; | |||
3535 | ||||
3536 | // This should be similar to start_k = __kmp_get_random( thread ) % nthreads | |||
3537 | // but we cannot use __kmp_get_random here | |||
3538 | kmp_int32 start_k = 0; | |||
3539 | kmp_int32 pass = 1; | |||
3540 | kmp_int32 k = start_k; | |||
3541 | ||||
3542 | do { | |||
3543 | // For now we're just linearly trying to find a thread | |||
3544 | thread = team->t.t_threads[k]; | |||
3545 | k = (k + 1) % nthreads; | |||
3546 | ||||
3547 | // we did a full pass through all the threads | |||
3548 | if (k == start_k) | |||
3549 | pass = pass << 1; | |||
3550 | ||||
3551 | } while (!__kmp_give_task(thread, k, ptask, pass)); | |||
3552 | ||||
3553 | __kmp_second_top_half_finish_proxy(taskdata); | |||
3554 | ||||
3555 | KA_TRACE(if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(exit): proxy task completing ooo %p\n" , taskdata); } | |||
3556 | 10,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(exit): proxy task completing ooo %p\n" , taskdata); } | |||
3557 | ("__kmp_proxy_task_completed_ooo(exit): proxy task completing ooo %p\n",if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(exit): proxy task completing ooo %p\n" , taskdata); } | |||
3558 | taskdata))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_proxy_task_completed_ooo(exit): proxy task completing ooo %p\n" , taskdata); }; | |||
3559 | } | |||
3560 | ||||
3561 | // __kmp_task_dup_alloc: Allocate the taskdata and make a copy of source task | |||
3562 | // for taskloop | |||
3563 | // | |||
3564 | // thread: allocating thread | |||
3565 | // task_src: pointer to source task to be duplicated | |||
3566 | // returns: a pointer to the allocated kmp_task_t structure (task). | |||
3567 | kmp_task_t *__kmp_task_dup_alloc(kmp_info_t *thread, kmp_task_t *task_src) { | |||
3568 | kmp_task_t *task; | |||
3569 | kmp_taskdata_t *taskdata; | |||
3570 | kmp_taskdata_t *taskdata_src; | |||
3571 | kmp_taskdata_t *parent_task = thread->th.th_current_task; | |||
3572 | size_t shareds_offset; | |||
3573 | size_t task_size; | |||
3574 | ||||
3575 | KA_TRACE(10, ("__kmp_task_dup_alloc(enter): Th %p, source task %p\n", thread,if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_dup_alloc(enter): Th %p, source task %p\n" , thread, task_src); } | |||
3576 | task_src))if (kmp_a_debug >= 10) { __kmp_debug_printf ("__kmp_task_dup_alloc(enter): Th %p, source task %p\n" , thread, task_src); }; | |||
3577 | taskdata_src = KMP_TASK_TO_TASKDATA(task_src)(((kmp_taskdata_t *)task_src) - 1); | |||
3578 | KMP_DEBUG_ASSERT(taskdata_src->td_flags.proxy ==if (!(taskdata_src->td_flags.proxy == 0)) { __kmp_debug_assert ("taskdata_src->td_flags.proxy == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3579); } | |||
3579 | TASK_FULL)if (!(taskdata_src->td_flags.proxy == 0)) { __kmp_debug_assert ("taskdata_src->td_flags.proxy == 0", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3579); }; // it should not be proxy task | |||
3580 | KMP_DEBUG_ASSERT(taskdata_src->td_flags.tasktype == TASK_EXPLICIT)if (!(taskdata_src->td_flags.tasktype == 1)) { __kmp_debug_assert ("taskdata_src->td_flags.tasktype == 1", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3580); }; | |||
3581 | task_size = taskdata_src->td_size_alloc; | |||
3582 | ||||
3583 | // Allocate a kmp_taskdata_t block and a kmp_task_t block. | |||
3584 | KA_TRACE(30, ("__kmp_task_dup_alloc: Th %p, malloc size %ld\n", thread,if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_task_dup_alloc: Th %p, malloc size %ld\n" , thread, task_size); } | |||
3585 | task_size))if (kmp_a_debug >= 30) { __kmp_debug_printf ("__kmp_task_dup_alloc: Th %p, malloc size %ld\n" , thread, task_size); }; | |||
3586 | #if USE_FAST_MEMORY3 | |||
3587 | taskdata = (kmp_taskdata_t *)__kmp_fast_allocate(thread, task_size)___kmp_fast_allocate((thread), (task_size), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3587); | |||
3588 | #else | |||
3589 | taskdata = (kmp_taskdata_t *)__kmp_thread_malloc(thread, task_size)___kmp_thread_malloc((thread), (task_size), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3589); | |||
3590 | #endif /* USE_FAST_MEMORY */ | |||
3591 | KMP_MEMCPYmemcpy(taskdata, taskdata_src, task_size); | |||
3592 | ||||
3593 | task = KMP_TASKDATA_TO_TASK(taskdata)(kmp_task_t *)(taskdata + 1); | |||
3594 | ||||
3595 | // Initialize new task (only specific fields not affected by memcpy) | |||
3596 | taskdata->td_task_id = KMP_GEN_TASK_ID()(~0); | |||
3597 | if (task->shareds != NULL__null) { // need setup shareds pointer | |||
3598 | shareds_offset = (char *)task_src->shareds - (char *)taskdata_src; | |||
3599 | task->shareds = &((char *)taskdata)[shareds_offset]; | |||
3600 | KMP_DEBUG_ASSERT((((kmp_uintptr_t)task->shareds) & (sizeof(void *) - 1)) ==if (!((((kmp_uintptr_t)task->shareds) & (sizeof(void * ) - 1)) == 0)) { __kmp_debug_assert("(((kmp_uintptr_t)task->shareds) & (sizeof(void *) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3601); } | |||
3601 | 0)if (!((((kmp_uintptr_t)task->shareds) & (sizeof(void * ) - 1)) == 0)) { __kmp_debug_assert("(((kmp_uintptr_t)task->shareds) & (sizeof(void *) - 1)) == 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3601); }; | |||
3602 | } | |||
3603 | taskdata->td_alloc_thread = thread; | |||
3604 | taskdata->td_parent = parent_task; | |||
3605 | taskdata->td_taskgroup = | |||
3606 | parent_task | |||
3607 | ->td_taskgroup; // task inherits the taskgroup from the parent task | |||
3608 | ||||
3609 | // Only need to keep track of child task counts if team parallel and tasking | |||
3610 | // not serialized | |||
3611 | if (!(taskdata->td_flags.team_serial || taskdata->td_flags.tasking_ser)) { | |||
3612 | KMP_ATOMIC_INC(&parent_task->td_incomplete_child_tasks)(&parent_task->td_incomplete_child_tasks)->fetch_add (1, std::memory_order_acq_rel); | |||
3613 | if (parent_task->td_taskgroup) | |||
3614 | KMP_ATOMIC_INC(&parent_task->td_taskgroup->count)(&parent_task->td_taskgroup->count)->fetch_add(1 , std::memory_order_acq_rel); | |||
3615 | // Only need to keep track of allocated child tasks for explicit tasks since | |||
3616 | // implicit not deallocated | |||
3617 | if (taskdata->td_parent->td_flags.tasktype == TASK_EXPLICIT1) | |||
3618 | KMP_ATOMIC_INC(&taskdata->td_parent->td_allocated_child_tasks)(&taskdata->td_parent->td_allocated_child_tasks)-> fetch_add(1, std::memory_order_acq_rel); | |||
3619 | } | |||
3620 | ||||
3621 | KA_TRACE(20,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_dup_alloc(exit): Th %p, created task %p, parent=%p\n" , thread, taskdata, taskdata->td_parent); } | |||
3622 | ("__kmp_task_dup_alloc(exit): Th %p, created task %p, parent=%p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_dup_alloc(exit): Th %p, created task %p, parent=%p\n" , thread, taskdata, taskdata->td_parent); } | |||
3623 | thread, taskdata, taskdata->td_parent))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_task_dup_alloc(exit): Th %p, created task %p, parent=%p\n" , thread, taskdata, taskdata->td_parent); }; | |||
3624 | #if OMPT_SUPPORT1 | |||
3625 | if (UNLIKELY(ompt_enabled.enabled)__builtin_expect(!!(ompt_enabled.enabled), 0)) | |||
3626 | __ompt_task_init(taskdata, thread->th.th_info.ds.ds_gtid); | |||
3627 | #endif | |||
3628 | return task; | |||
3629 | } | |||
3630 | ||||
3631 | // Routine optionally generated by the compiler for setting the lastprivate flag | |||
3632 | // and calling needed constructors for private/firstprivate objects | |||
3633 | // (used to form taskloop tasks from pattern task) | |||
3634 | // Parameters: dest task, src task, lastprivate flag. | |||
3635 | typedef void (*p_task_dup_t)(kmp_task_t *, kmp_task_t *, kmp_int32); | |||
3636 | ||||
3637 | KMP_BUILD_ASSERT(sizeof(long) == 4 || sizeof(long) == 8)static_assert(sizeof(long) == 4 || sizeof(long) == 8, "Build condition error" ); | |||
3638 | ||||
3639 | // class to encapsulate manipulating loop bounds in a taskloop task. | |||
3640 | // this abstracts away the Intel vs GOMP taskloop interface for setting/getting | |||
3641 | // the loop bound variables. | |||
3642 | class kmp_taskloop_bounds_t { | |||
3643 | kmp_task_t *task; | |||
3644 | const kmp_taskdata_t *taskdata; | |||
3645 | size_t lower_offset; | |||
3646 | size_t upper_offset; | |||
3647 | ||||
3648 | public: | |||
3649 | kmp_taskloop_bounds_t(kmp_task_t *_task, kmp_uint64 *lb, kmp_uint64 *ub) | |||
3650 | : task(_task), taskdata(KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1)), | |||
3651 | lower_offset((char *)lb - (char *)task), | |||
3652 | upper_offset((char *)ub - (char *)task) { | |||
3653 | KMP_DEBUG_ASSERT((char *)lb > (char *)_task)if (!((char *)lb > (char *)_task)) { __kmp_debug_assert("(char *)lb > (char *)_task" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3653); }; | |||
3654 | KMP_DEBUG_ASSERT((char *)ub > (char *)_task)if (!((char *)ub > (char *)_task)) { __kmp_debug_assert("(char *)ub > (char *)_task" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3654); }; | |||
3655 | } | |||
3656 | kmp_taskloop_bounds_t(kmp_task_t *_task, const kmp_taskloop_bounds_t &bounds) | |||
3657 | : task(_task), taskdata(KMP_TASK_TO_TASKDATA(_task)(((kmp_taskdata_t *)_task) - 1)), | |||
3658 | lower_offset(bounds.lower_offset), upper_offset(bounds.upper_offset) {} | |||
3659 | size_t get_lower_offset() const { return lower_offset; } | |||
3660 | size_t get_upper_offset() const { return upper_offset; } | |||
3661 | kmp_uint64 get_lb() const { | |||
3662 | kmp_int64 retval; | |||
3663 | #if defined(KMP_GOMP_COMPAT) | |||
3664 | // Intel task just returns the lower bound normally | |||
3665 | if (!taskdata->td_flags.native) { | |||
3666 | retval = *(kmp_int64 *)((char *)task + lower_offset); | |||
3667 | } else { | |||
3668 | // GOMP task has to take into account the sizeof(long) | |||
3669 | if (taskdata->td_size_loop_bounds == 4) { | |||
3670 | kmp_int32 *lb = RCAST(kmp_int32 *, task->shareds)reinterpret_cast<kmp_int32 *>(task->shareds); | |||
3671 | retval = (kmp_int64)*lb; | |||
3672 | } else { | |||
3673 | kmp_int64 *lb = RCAST(kmp_int64 *, task->shareds)reinterpret_cast<kmp_int64 *>(task->shareds); | |||
3674 | retval = (kmp_int64)*lb; | |||
3675 | } | |||
3676 | } | |||
3677 | #else | |||
3678 | retval = *(kmp_int64 *)((char *)task + lower_offset); | |||
3679 | #endif // defined(KMP_GOMP_COMPAT) | |||
3680 | return retval; | |||
3681 | } | |||
3682 | kmp_uint64 get_ub() const { | |||
3683 | kmp_int64 retval; | |||
3684 | #if defined(KMP_GOMP_COMPAT) | |||
3685 | // Intel task just returns the upper bound normally | |||
3686 | if (!taskdata->td_flags.native) { | |||
3687 | retval = *(kmp_int64 *)((char *)task + upper_offset); | |||
3688 | } else { | |||
3689 | // GOMP task has to take into account the sizeof(long) | |||
3690 | if (taskdata->td_size_loop_bounds == 4) { | |||
3691 | kmp_int32 *ub = RCAST(kmp_int32 *, task->shareds)reinterpret_cast<kmp_int32 *>(task->shareds) + 1; | |||
3692 | retval = (kmp_int64)*ub; | |||
3693 | } else { | |||
3694 | kmp_int64 *ub = RCAST(kmp_int64 *, task->shareds)reinterpret_cast<kmp_int64 *>(task->shareds) + 1; | |||
3695 | retval = (kmp_int64)*ub; | |||
3696 | } | |||
3697 | } | |||
3698 | #else | |||
3699 | retval = *(kmp_int64 *)((char *)task + upper_offset); | |||
3700 | #endif // defined(KMP_GOMP_COMPAT) | |||
3701 | return retval; | |||
3702 | } | |||
3703 | void set_lb(kmp_uint64 lb) { | |||
3704 | #if defined(KMP_GOMP_COMPAT) | |||
3705 | // Intel task just sets the lower bound normally | |||
3706 | if (!taskdata->td_flags.native) { | |||
3707 | *(kmp_uint64 *)((char *)task + lower_offset) = lb; | |||
3708 | } else { | |||
3709 | // GOMP task has to take into account the sizeof(long) | |||
3710 | if (taskdata->td_size_loop_bounds == 4) { | |||
3711 | kmp_uint32 *lower = RCAST(kmp_uint32 *, task->shareds)reinterpret_cast<kmp_uint32 *>(task->shareds); | |||
3712 | *lower = (kmp_uint32)lb; | |||
3713 | } else { | |||
3714 | kmp_uint64 *lower = RCAST(kmp_uint64 *, task->shareds)reinterpret_cast<kmp_uint64 *>(task->shareds); | |||
3715 | *lower = (kmp_uint64)lb; | |||
3716 | } | |||
3717 | } | |||
3718 | #else | |||
3719 | *(kmp_uint64 *)((char *)task + lower_offset) = lb; | |||
3720 | #endif // defined(KMP_GOMP_COMPAT) | |||
3721 | } | |||
3722 | void set_ub(kmp_uint64 ub) { | |||
3723 | #if defined(KMP_GOMP_COMPAT) | |||
3724 | // Intel task just sets the upper bound normally | |||
3725 | if (!taskdata->td_flags.native) { | |||
3726 | *(kmp_uint64 *)((char *)task + upper_offset) = ub; | |||
3727 | } else { | |||
3728 | // GOMP task has to take into account the sizeof(long) | |||
3729 | if (taskdata->td_size_loop_bounds == 4) { | |||
3730 | kmp_uint32 *upper = RCAST(kmp_uint32 *, task->shareds)reinterpret_cast<kmp_uint32 *>(task->shareds) + 1; | |||
3731 | *upper = (kmp_uint32)ub; | |||
3732 | } else { | |||
3733 | kmp_uint64 *upper = RCAST(kmp_uint64 *, task->shareds)reinterpret_cast<kmp_uint64 *>(task->shareds) + 1; | |||
3734 | *upper = (kmp_uint64)ub; | |||
3735 | } | |||
3736 | } | |||
3737 | #else | |||
3738 | *(kmp_uint64 *)((char *)task + upper_offset) = ub; | |||
3739 | #endif // defined(KMP_GOMP_COMPAT) | |||
3740 | } | |||
3741 | }; | |||
3742 | ||||
3743 | // __kmp_taskloop_linear: Start tasks of the taskloop linearly | |||
3744 | // | |||
3745 | // loc Source location information | |||
3746 | // gtid Global thread ID | |||
3747 | // task Pattern task, exposes the loop iteration range | |||
3748 | // lb Pointer to loop lower bound in task structure | |||
3749 | // ub Pointer to loop upper bound in task structure | |||
3750 | // st Loop stride | |||
3751 | // ub_glob Global upper bound (used for lastprivate check) | |||
3752 | // num_tasks Number of tasks to execute | |||
3753 | // grainsize Number of loop iterations per task | |||
3754 | // extras Number of chunks with grainsize+1 iterations | |||
3755 | // tc Iterations count | |||
3756 | // task_dup Tasks duplication routine | |||
3757 | // codeptr_ra Return address for OMPT events | |||
3758 | void __kmp_taskloop_linear(ident_t *loc, int gtid, kmp_task_t *task, | |||
3759 | kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, | |||
3760 | kmp_uint64 ub_glob, kmp_uint64 num_tasks, | |||
3761 | kmp_uint64 grainsize, kmp_uint64 extras, | |||
3762 | kmp_uint64 tc, | |||
3763 | #if OMPT_SUPPORT1 | |||
3764 | void *codeptr_ra, | |||
3765 | #endif | |||
3766 | void *task_dup) { | |||
3767 | KMP_COUNT_BLOCK(OMP_TASKLOOP)((void)0); | |||
3768 | KMP_TIME_PARTITIONED_BLOCK(OMP_taskloop_scheduling)((void)0); | |||
3769 | p_task_dup_t ptask_dup = (p_task_dup_t)task_dup; | |||
3770 | // compiler provides global bounds here | |||
3771 | kmp_taskloop_bounds_t task_bounds(task, lb, ub); | |||
3772 | kmp_uint64 lower = task_bounds.get_lb(); | |||
3773 | kmp_uint64 upper = task_bounds.get_ub(); | |||
3774 | kmp_uint64 i; | |||
3775 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
3776 | kmp_taskdata_t *current_task = thread->th.th_current_task; | |||
3777 | kmp_task_t *next_task; | |||
3778 | kmp_int32 lastpriv = 0; | |||
3779 | ||||
3780 | KMP_DEBUG_ASSERT(tc == num_tasks * grainsize + extras)if (!(tc == num_tasks * grainsize + extras)) { __kmp_debug_assert ("tc == num_tasks * grainsize + extras", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3780); }; | |||
3781 | KMP_DEBUG_ASSERT(num_tasks > extras)if (!(num_tasks > extras)) { __kmp_debug_assert("num_tasks > extras" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3781); }; | |||
3782 | KMP_DEBUG_ASSERT(num_tasks > 0)if (!(num_tasks > 0)) { __kmp_debug_assert("num_tasks > 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3782); }; | |||
3783 | KA_TRACE(20, ("__kmp_taskloop_linear: T#%d: %lld tasks, grainsize %lld, "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d: %lld tasks, grainsize %lld, " "extras %lld, i=%lld,%lld(%d)%lld, dup %p\n", gtid, num_tasks , grainsize, extras, lower, upper, ub_glob, st, task_dup); } | |||
3784 | "extras %lld, i=%lld,%lld(%d)%lld, dup %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d: %lld tasks, grainsize %lld, " "extras %lld, i=%lld,%lld(%d)%lld, dup %p\n", gtid, num_tasks , grainsize, extras, lower, upper, ub_glob, st, task_dup); } | |||
3785 | gtid, num_tasks, grainsize, extras, lower, upper, ub_glob, st,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d: %lld tasks, grainsize %lld, " "extras %lld, i=%lld,%lld(%d)%lld, dup %p\n", gtid, num_tasks , grainsize, extras, lower, upper, ub_glob, st, task_dup); } | |||
3786 | task_dup))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d: %lld tasks, grainsize %lld, " "extras %lld, i=%lld,%lld(%d)%lld, dup %p\n", gtid, num_tasks , grainsize, extras, lower, upper, ub_glob, st, task_dup); }; | |||
3787 | ||||
3788 | // Launch num_tasks tasks, assign grainsize iterations each task | |||
3789 | for (i = 0; i < num_tasks; ++i) { | |||
3790 | kmp_uint64 chunk_minus_1; | |||
3791 | if (extras == 0) { | |||
3792 | chunk_minus_1 = grainsize - 1; | |||
3793 | } else { | |||
3794 | chunk_minus_1 = grainsize; | |||
3795 | --extras; // first extras iterations get bigger chunk (grainsize+1) | |||
3796 | } | |||
3797 | upper = lower + st * chunk_minus_1; | |||
3798 | if (i == num_tasks - 1) { | |||
3799 | // schedule the last task, set lastprivate flag if needed | |||
3800 | if (st == 1) { // most common case | |||
3801 | KMP_DEBUG_ASSERT(upper == *ub)if (!(upper == *ub)) { __kmp_debug_assert("upper == *ub", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3801); }; | |||
3802 | if (upper == ub_glob) | |||
3803 | lastpriv = 1; | |||
3804 | } else if (st > 0) { // positive loop stride | |||
3805 | KMP_DEBUG_ASSERT((kmp_uint64)st > *ub - upper)if (!((kmp_uint64)st > *ub - upper)) { __kmp_debug_assert( "(kmp_uint64)st > *ub - upper", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3805); }; | |||
3806 | if ((kmp_uint64)st > ub_glob - upper) | |||
3807 | lastpriv = 1; | |||
3808 | } else { // negative loop stride | |||
3809 | KMP_DEBUG_ASSERT(upper + st < *ub)if (!(upper + st < *ub)) { __kmp_debug_assert("upper + st < *ub" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3809); }; | |||
3810 | if (upper - ub_glob < (kmp_uint64)(-st)) | |||
3811 | lastpriv = 1; | |||
3812 | } | |||
3813 | } | |||
3814 | next_task = __kmp_task_dup_alloc(thread, task); // allocate new task | |||
3815 | kmp_taskdata_t *next_taskdata = KMP_TASK_TO_TASKDATA(next_task)(((kmp_taskdata_t *)next_task) - 1); | |||
3816 | kmp_taskloop_bounds_t next_task_bounds = | |||
3817 | kmp_taskloop_bounds_t(next_task, task_bounds); | |||
3818 | ||||
3819 | // adjust task-specific bounds | |||
3820 | next_task_bounds.set_lb(lower); | |||
3821 | if (next_taskdata->td_flags.native) { | |||
3822 | next_task_bounds.set_ub(upper + (st > 0 ? 1 : -1)); | |||
3823 | } else { | |||
3824 | next_task_bounds.set_ub(upper); | |||
3825 | } | |||
3826 | if (ptask_dup != NULL__null) // set lastprivate flag, construct fistprivates, etc. | |||
3827 | ptask_dup(next_task, task, lastpriv); | |||
3828 | KA_TRACE(40,if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, " "upper %lld stride %lld, (offsets %p %p)\n", gtid, i, next_task , lower, upper, st, next_task_bounds.get_lower_offset(), next_task_bounds .get_upper_offset()); } | |||
3829 | ("__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, "if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, " "upper %lld stride %lld, (offsets %p %p)\n", gtid, i, next_task , lower, upper, st, next_task_bounds.get_lower_offset(), next_task_bounds .get_upper_offset()); } | |||
3830 | "upper %lld stride %lld, (offsets %p %p)\n",if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, " "upper %lld stride %lld, (offsets %p %p)\n", gtid, i, next_task , lower, upper, st, next_task_bounds.get_lower_offset(), next_task_bounds .get_upper_offset()); } | |||
3831 | gtid, i, next_task, lower, upper, st,if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, " "upper %lld stride %lld, (offsets %p %p)\n", gtid, i, next_task , lower, upper, st, next_task_bounds.get_lower_offset(), next_task_bounds .get_upper_offset()); } | |||
3832 | next_task_bounds.get_lower_offset(),if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, " "upper %lld stride %lld, (offsets %p %p)\n", gtid, i, next_task , lower, upper, st, next_task_bounds.get_lower_offset(), next_task_bounds .get_upper_offset()); } | |||
3833 | next_task_bounds.get_upper_offset()))if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmp_taskloop_linear: T#%d; task #%llu: task %p: lower %lld, " "upper %lld stride %lld, (offsets %p %p)\n", gtid, i, next_task , lower, upper, st, next_task_bounds.get_lower_offset(), next_task_bounds .get_upper_offset()); }; | |||
3834 | #if OMPT_SUPPORT1 | |||
3835 | __kmp_omp_taskloop_task(NULL__null, gtid, next_task, | |||
3836 | codeptr_ra); // schedule new task | |||
3837 | #else | |||
3838 | __kmp_omp_task(gtid, next_task, true); // schedule new task | |||
3839 | #endif | |||
3840 | lower = upper + st; // adjust lower bound for the next iteration | |||
3841 | } | |||
3842 | // free the pattern task and exit | |||
3843 | __kmp_task_start(gtid, task, current_task); // make internal bookkeeping | |||
3844 | // do not execute the pattern task, just do internal bookkeeping | |||
3845 | __kmp_task_finish<false>(gtid, task, current_task); | |||
3846 | } | |||
3847 | ||||
3848 | // Structure to keep taskloop parameters for auxiliary task | |||
3849 | // kept in the shareds of the task structure. | |||
3850 | typedef struct __taskloop_params { | |||
3851 | kmp_task_t *task; | |||
3852 | kmp_uint64 *lb; | |||
3853 | kmp_uint64 *ub; | |||
3854 | void *task_dup; | |||
3855 | kmp_int64 st; | |||
3856 | kmp_uint64 ub_glob; | |||
3857 | kmp_uint64 num_tasks; | |||
3858 | kmp_uint64 grainsize; | |||
3859 | kmp_uint64 extras; | |||
3860 | kmp_uint64 tc; | |||
3861 | kmp_uint64 num_t_min; | |||
3862 | #if OMPT_SUPPORT1 | |||
3863 | void *codeptr_ra; | |||
3864 | #endif | |||
3865 | } __taskloop_params_t; | |||
3866 | ||||
3867 | void __kmp_taskloop_recur(ident_t *, int, kmp_task_t *, kmp_uint64 *, | |||
3868 | kmp_uint64 *, kmp_int64, kmp_uint64, kmp_uint64, | |||
3869 | kmp_uint64, kmp_uint64, kmp_uint64, kmp_uint64, | |||
3870 | #if OMPT_SUPPORT1 | |||
3871 | void *, | |||
3872 | #endif | |||
3873 | void *); | |||
3874 | ||||
3875 | // Execute part of the the taskloop submitted as a task. | |||
3876 | int __kmp_taskloop_task(int gtid, void *ptask) { | |||
3877 | __taskloop_params_t *p = | |||
3878 | (__taskloop_params_t *)((kmp_task_t *)ptask)->shareds; | |||
3879 | kmp_task_t *task = p->task; | |||
3880 | kmp_uint64 *lb = p->lb; | |||
3881 | kmp_uint64 *ub = p->ub; | |||
3882 | void *task_dup = p->task_dup; | |||
3883 | // p_task_dup_t ptask_dup = (p_task_dup_t)task_dup; | |||
3884 | kmp_int64 st = p->st; | |||
3885 | kmp_uint64 ub_glob = p->ub_glob; | |||
3886 | kmp_uint64 num_tasks = p->num_tasks; | |||
3887 | kmp_uint64 grainsize = p->grainsize; | |||
3888 | kmp_uint64 extras = p->extras; | |||
3889 | kmp_uint64 tc = p->tc; | |||
3890 | kmp_uint64 num_t_min = p->num_t_min; | |||
3891 | #if OMPT_SUPPORT1 | |||
3892 | void *codeptr_ra = p->codeptr_ra; | |||
3893 | #endif | |||
3894 | #if KMP_DEBUG1 | |||
3895 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
3896 | KMP_DEBUG_ASSERT(task != NULL)if (!(task != __null)) { __kmp_debug_assert("task != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3896); }; | |||
3897 | KA_TRACE(20, ("__kmp_taskloop_task: T#%d, task %p: %lld tasks, grainsize"if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_task: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); } | |||
3898 | " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_task: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); } | |||
3899 | gtid, taskdata, num_tasks, grainsize, extras, *lb, *ub, st,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_task: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); } | |||
3900 | task_dup))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_task: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); }; | |||
3901 | #endif | |||
3902 | KMP_DEBUG_ASSERT(num_tasks * 2 + 1 > num_t_min)if (!(num_tasks * 2 + 1 > num_t_min)) { __kmp_debug_assert ("num_tasks * 2 + 1 > num_t_min", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3902); }; | |||
3903 | if (num_tasks > num_t_min) | |||
3904 | __kmp_taskloop_recur(NULL__null, gtid, task, lb, ub, st, ub_glob, num_tasks, | |||
3905 | grainsize, extras, tc, num_t_min, | |||
3906 | #if OMPT_SUPPORT1 | |||
3907 | codeptr_ra, | |||
3908 | #endif | |||
3909 | task_dup); | |||
3910 | else | |||
3911 | __kmp_taskloop_linear(NULL__null, gtid, task, lb, ub, st, ub_glob, num_tasks, | |||
3912 | grainsize, extras, tc, | |||
3913 | #if OMPT_SUPPORT1 | |||
3914 | codeptr_ra, | |||
3915 | #endif | |||
3916 | task_dup); | |||
3917 | ||||
3918 | KA_TRACE(40, ("__kmp_taskloop_task(exit): T#%d\n", gtid))if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmp_taskloop_task(exit): T#%d\n" , gtid); }; | |||
3919 | return 0; | |||
3920 | } | |||
3921 | ||||
3922 | // Schedule part of the the taskloop as a task, | |||
3923 | // execute the rest of the the taskloop. | |||
3924 | // | |||
3925 | // loc Source location information | |||
3926 | // gtid Global thread ID | |||
3927 | // task Pattern task, exposes the loop iteration range | |||
3928 | // lb Pointer to loop lower bound in task structure | |||
3929 | // ub Pointer to loop upper bound in task structure | |||
3930 | // st Loop stride | |||
3931 | // ub_glob Global upper bound (used for lastprivate check) | |||
3932 | // num_tasks Number of tasks to execute | |||
3933 | // grainsize Number of loop iterations per task | |||
3934 | // extras Number of chunks with grainsize+1 iterations | |||
3935 | // tc Iterations count | |||
3936 | // num_t_min Threashold to launch tasks recursively | |||
3937 | // task_dup Tasks duplication routine | |||
3938 | // codeptr_ra Return address for OMPT events | |||
3939 | void __kmp_taskloop_recur(ident_t *loc, int gtid, kmp_task_t *task, | |||
3940 | kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, | |||
3941 | kmp_uint64 ub_glob, kmp_uint64 num_tasks, | |||
3942 | kmp_uint64 grainsize, kmp_uint64 extras, | |||
3943 | kmp_uint64 tc, kmp_uint64 num_t_min, | |||
3944 | #if OMPT_SUPPORT1 | |||
3945 | void *codeptr_ra, | |||
3946 | #endif | |||
3947 | void *task_dup) { | |||
3948 | #if KMP_DEBUG1 | |||
3949 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
3950 | KMP_DEBUG_ASSERT(task != NULL)if (!(task != __null)) { __kmp_debug_assert("task != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3950); }; | |||
3951 | KMP_DEBUG_ASSERT(num_tasks > num_t_min)if (!(num_tasks > num_t_min)) { __kmp_debug_assert("num_tasks > num_t_min" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3951); }; | |||
3952 | KA_TRACE(20, ("__kmp_taskloop_recur: T#%d, task %p: %lld tasks, grainsize"if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_recur: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); } | |||
3953 | " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_recur: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); } | |||
3954 | gtid, taskdata, num_tasks, grainsize, extras, *lb, *ub, st,if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_recur: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); } | |||
3955 | task_dup))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmp_taskloop_recur: T#%d, task %p: %lld tasks, grainsize" " %lld, extras %lld, i=%lld,%lld(%d), dup %p\n", gtid, taskdata , num_tasks, grainsize, extras, *lb, *ub, st, task_dup); }; | |||
3956 | #endif | |||
3957 | p_task_dup_t ptask_dup = (p_task_dup_t)task_dup; | |||
3958 | kmp_uint64 lower = *lb; | |||
3959 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
3960 | // kmp_taskdata_t *current_task = thread->th.th_current_task; | |||
3961 | kmp_task_t *next_task; | |||
3962 | size_t lower_offset = | |||
3963 | (char *)lb - (char *)task; // remember offset of lb in the task structure | |||
3964 | size_t upper_offset = | |||
3965 | (char *)ub - (char *)task; // remember offset of ub in the task structure | |||
3966 | ||||
3967 | KMP_DEBUG_ASSERT(tc == num_tasks * grainsize + extras)if (!(tc == num_tasks * grainsize + extras)) { __kmp_debug_assert ("tc == num_tasks * grainsize + extras", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3967); }; | |||
3968 | KMP_DEBUG_ASSERT(num_tasks > extras)if (!(num_tasks > extras)) { __kmp_debug_assert("num_tasks > extras" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3968); }; | |||
3969 | KMP_DEBUG_ASSERT(num_tasks > 0)if (!(num_tasks > 0)) { __kmp_debug_assert("num_tasks > 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 3969); }; | |||
3970 | ||||
3971 | // split the loop in two halves | |||
3972 | kmp_uint64 lb1, ub0, tc0, tc1, ext0, ext1; | |||
3973 | kmp_uint64 gr_size0 = grainsize; | |||
3974 | kmp_uint64 n_tsk0 = num_tasks >> 1; // num_tasks/2 to execute | |||
3975 | kmp_uint64 n_tsk1 = num_tasks - n_tsk0; // to schedule as a task | |||
3976 | if (n_tsk0 <= extras) { | |||
3977 | gr_size0++; // integrate extras into grainsize | |||
3978 | ext0 = 0; // no extra iters in 1st half | |||
3979 | ext1 = extras - n_tsk0; // remaining extras | |||
3980 | tc0 = gr_size0 * n_tsk0; | |||
3981 | tc1 = tc - tc0; | |||
3982 | } else { // n_tsk0 > extras | |||
3983 | ext1 = 0; // no extra iters in 2nd half | |||
3984 | ext0 = extras; | |||
3985 | tc1 = grainsize * n_tsk1; | |||
3986 | tc0 = tc - tc1; | |||
3987 | } | |||
3988 | ub0 = lower + st * (tc0 - 1); | |||
3989 | lb1 = ub0 + st; | |||
3990 | ||||
3991 | // create pattern task for 2nd half of the loop | |||
3992 | next_task = __kmp_task_dup_alloc(thread, task); // duplicate the task | |||
3993 | // adjust lower bound (upper bound is not changed) for the 2nd half | |||
3994 | *(kmp_uint64 *)((char *)next_task + lower_offset) = lb1; | |||
3995 | if (ptask_dup != NULL__null) // construct fistprivates, etc. | |||
3996 | ptask_dup(next_task, task, 0); | |||
3997 | *ub = ub0; // adjust upper bound for the 1st half | |||
3998 | ||||
3999 | // create auxiliary task for 2nd half of the loop | |||
4000 | kmp_task_t *new_task = | |||
4001 | __kmpc_omp_task_alloc(loc, gtid, 1, 3 * sizeof(void *), | |||
4002 | sizeof(__taskloop_params_t), &__kmp_taskloop_task); | |||
4003 | __taskloop_params_t *p = (__taskloop_params_t *)new_task->shareds; | |||
4004 | p->task = next_task; | |||
4005 | p->lb = (kmp_uint64 *)((char *)next_task + lower_offset); | |||
4006 | p->ub = (kmp_uint64 *)((char *)next_task + upper_offset); | |||
4007 | p->task_dup = task_dup; | |||
4008 | p->st = st; | |||
4009 | p->ub_glob = ub_glob; | |||
4010 | p->num_tasks = n_tsk1; | |||
4011 | p->grainsize = grainsize; | |||
4012 | p->extras = ext1; | |||
4013 | p->tc = tc1; | |||
4014 | p->num_t_min = num_t_min; | |||
4015 | #if OMPT_SUPPORT1 | |||
4016 | p->codeptr_ra = codeptr_ra; | |||
4017 | #endif | |||
4018 | ||||
4019 | #if OMPT_SUPPORT1 | |||
4020 | // schedule new task with correct return address for OMPT events | |||
4021 | __kmp_omp_taskloop_task(NULL__null, gtid, new_task, codeptr_ra); | |||
4022 | #else | |||
4023 | __kmp_omp_task(gtid, new_task, true); // schedule new task | |||
4024 | #endif | |||
4025 | ||||
4026 | // execute the 1st half of current subrange | |||
4027 | if (n_tsk0 > num_t_min) | |||
4028 | __kmp_taskloop_recur(loc, gtid, task, lb, ub, st, ub_glob, n_tsk0, gr_size0, | |||
4029 | ext0, tc0, num_t_min, | |||
4030 | #if OMPT_SUPPORT1 | |||
4031 | codeptr_ra, | |||
4032 | #endif | |||
4033 | task_dup); | |||
4034 | else | |||
4035 | __kmp_taskloop_linear(loc, gtid, task, lb, ub, st, ub_glob, n_tsk0, | |||
4036 | gr_size0, ext0, tc0, | |||
4037 | #if OMPT_SUPPORT1 | |||
4038 | codeptr_ra, | |||
4039 | #endif | |||
4040 | task_dup); | |||
4041 | ||||
4042 | KA_TRACE(40, ("__kmpc_taskloop_recur(exit): T#%d\n", gtid))if (kmp_a_debug >= 40) { __kmp_debug_printf ("__kmpc_taskloop_recur(exit): T#%d\n" , gtid); }; | |||
4043 | } | |||
4044 | ||||
4045 | /*! | |||
4046 | @ingroup TASKING | |||
4047 | @param loc Source location information | |||
4048 | @param gtid Global thread ID | |||
4049 | @param task Task structure | |||
4050 | @param if_val Value of the if clause | |||
4051 | @param lb Pointer to loop lower bound in task structure | |||
4052 | @param ub Pointer to loop upper bound in task structure | |||
4053 | @param st Loop stride | |||
4054 | @param nogroup Flag, 1 if nogroup clause specified, 0 otherwise | |||
4055 | @param sched Schedule specified 0/1/2 for none/grainsize/num_tasks | |||
4056 | @param grainsize Schedule value if specified | |||
4057 | @param task_dup Tasks duplication routine | |||
4058 | ||||
4059 | Execute the taskloop construct. | |||
4060 | */ | |||
4061 | void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t *task, int if_val, | |||
4062 | kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int nogroup, | |||
4063 | int sched, kmp_uint64 grainsize, void *task_dup) { | |||
4064 | kmp_taskdata_t *taskdata = KMP_TASK_TO_TASKDATA(task)(((kmp_taskdata_t *)task) - 1); | |||
4065 | KMP_DEBUG_ASSERT(task != NULL)if (!(task != __null)) { __kmp_debug_assert("task != __null", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 4065); }; | |||
4066 | ||||
4067 | if (nogroup == 0) { | |||
4068 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
4069 | OMPT_STORE_RETURN_ADDRESS(gtid)if (ompt_enabled.enabled && gtid >= 0 && __kmp_threads [gtid] && !__kmp_threads[gtid]->th.ompt_thread_info .return_address) __kmp_threads[gtid]->th.ompt_thread_info. return_address = __builtin_return_address(0); | |||
4070 | #endif | |||
4071 | __kmpc_taskgroup(loc, gtid); | |||
4072 | } | |||
4073 | ||||
4074 | // ========================================================================= | |||
4075 | // calculate loop parameters | |||
4076 | kmp_taskloop_bounds_t task_bounds(task, lb, ub); | |||
4077 | kmp_uint64 tc; | |||
4078 | // compiler provides global bounds here | |||
4079 | kmp_uint64 lower = task_bounds.get_lb(); | |||
4080 | kmp_uint64 upper = task_bounds.get_ub(); | |||
4081 | kmp_uint64 ub_glob = upper; // global upper used to calc lastprivate flag | |||
4082 | kmp_uint64 num_tasks = 0, extras = 0; | |||
4083 | kmp_uint64 num_tasks_min = __kmp_taskloop_min_tasks; | |||
4084 | kmp_info_t *thread = __kmp_threads[gtid]; | |||
4085 | kmp_taskdata_t *current_task = thread->th.th_current_task; | |||
4086 | ||||
4087 | KA_TRACE(20, ("__kmpc_taskloop: T#%d, task %p, lb %lld, ub %lld, st %lld, "if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, task %p, lb %lld, ub %lld, st %lld, " "grain %llu(%d), dup %p\n", gtid, taskdata, lower, upper, st , grainsize, sched, task_dup); } | |||
4088 | "grain %llu(%d), dup %p\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, task %p, lb %lld, ub %lld, st %lld, " "grain %llu(%d), dup %p\n", gtid, taskdata, lower, upper, st , grainsize, sched, task_dup); } | |||
4089 | gtid, taskdata, lower, upper, st, grainsize, sched, task_dup))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, task %p, lb %lld, ub %lld, st %lld, " "grain %llu(%d), dup %p\n", gtid, taskdata, lower, upper, st , grainsize, sched, task_dup); }; | |||
4090 | ||||
4091 | // compute trip count | |||
4092 | if (st == 1) { // most common case | |||
4093 | tc = upper - lower + 1; | |||
4094 | } else if (st < 0) { | |||
4095 | tc = (lower - upper) / (-st) + 1; | |||
4096 | } else { // st > 0 | |||
4097 | tc = (upper - lower) / st + 1; | |||
4098 | } | |||
4099 | if (tc == 0) { | |||
4100 | KA_TRACE(20, ("__kmpc_taskloop(exit): T#%d zero-trip loop\n", gtid))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop(exit): T#%d zero-trip loop\n" , gtid); }; | |||
4101 | // free the pattern task and exit | |||
4102 | __kmp_task_start(gtid, task, current_task); | |||
4103 | // do not execute anything for zero-trip loop | |||
4104 | __kmp_task_finish<false>(gtid, task, current_task); | |||
4105 | return; | |||
4106 | } | |||
4107 | ||||
4108 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
4109 | ompt_team_info_t *team_info = __ompt_get_teaminfo(0, NULL__null); | |||
4110 | ompt_task_info_t *task_info = __ompt_get_task_info_object(0); | |||
4111 | if (ompt_enabled.ompt_callback_work) { | |||
4112 | ompt_callbacks.ompt_callback(ompt_callback_work)ompt_callback_work_callback( | |||
4113 | ompt_work_taskloop, ompt_scope_begin, &(team_info->parallel_data), | |||
4114 | &(task_info->task_data), tc, OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0)); | |||
4115 | } | |||
4116 | #endif | |||
4117 | ||||
4118 | if (num_tasks_min == 0) | |||
4119 | // TODO: can we choose better default heuristic? | |||
4120 | num_tasks_min = | |||
4121 | KMP_MIN(thread->th.th_team_nproc * 10, INITIAL_TASK_DEQUE_SIZE)((thread->th.th_team_nproc * 10) < ((1 << 8)) ? ( thread->th.th_team_nproc * 10) : ((1 << 8))); | |||
4122 | ||||
4123 | // compute num_tasks/grainsize based on the input provided | |||
4124 | switch (sched) { | |||
4125 | case 0: // no schedule clause specified, we can choose the default | |||
4126 | // let's try to schedule (team_size*10) tasks | |||
4127 | grainsize = thread->th.th_team_nproc * 10; | |||
4128 | case 2: // num_tasks provided | |||
4129 | if (grainsize > tc) { | |||
4130 | num_tasks = tc; // too big num_tasks requested, adjust values | |||
4131 | grainsize = 1; | |||
4132 | extras = 0; | |||
4133 | } else { | |||
4134 | num_tasks = grainsize; | |||
4135 | grainsize = tc / num_tasks; | |||
4136 | extras = tc % num_tasks; | |||
4137 | } | |||
4138 | break; | |||
4139 | case 1: // grainsize provided | |||
4140 | if (grainsize > tc) { | |||
4141 | num_tasks = 1; // too big grainsize requested, adjust values | |||
4142 | grainsize = tc; | |||
4143 | extras = 0; | |||
4144 | } else { | |||
4145 | num_tasks = tc / grainsize; | |||
4146 | // adjust grainsize for balanced distribution of iterations | |||
4147 | grainsize = tc / num_tasks; | |||
4148 | extras = tc % num_tasks; | |||
4149 | } | |||
4150 | break; | |||
4151 | default: | |||
4152 | KMP_ASSERT2(0, "unknown scheduling of taskloop")if (!(0)) { __kmp_debug_assert(("unknown scheduling of taskloop" ), "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 4152); }; | |||
4153 | } | |||
4154 | KMP_DEBUG_ASSERT(tc == num_tasks * grainsize + extras)if (!(tc == num_tasks * grainsize + extras)) { __kmp_debug_assert ("tc == num_tasks * grainsize + extras", "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 4154); }; | |||
4155 | KMP_DEBUG_ASSERT(num_tasks > extras)if (!(num_tasks > extras)) { __kmp_debug_assert("num_tasks > extras" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 4155); }; | |||
4156 | KMP_DEBUG_ASSERT(num_tasks > 0)if (!(num_tasks > 0)) { __kmp_debug_assert("num_tasks > 0" , "/build/llvm-toolchain-snapshot-8~svn345461/projects/openmp/runtime/src/kmp_tasking.cpp" , 4156); }; | |||
4157 | // ========================================================================= | |||
4158 | ||||
4159 | // check if clause value first | |||
4160 | // Also require GOMP_taskloop to reduce to linear (taskdata->td_flags.native) | |||
4161 | if (if_val == 0) { // if(0) specified, mark task as serial | |||
4162 | taskdata->td_flags.task_serial = 1; | |||
4163 | taskdata->td_flags.tiedness = TASK_TIED1; // AC: serial task cannot be untied | |||
4164 | // always start serial tasks linearly | |||
4165 | __kmp_taskloop_linear(loc, gtid, task, lb, ub, st, ub_glob, num_tasks, | |||
4166 | grainsize, extras, tc, | |||
4167 | #if OMPT_SUPPORT1 | |||
4168 | OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0), | |||
4169 | #endif | |||
4170 | task_dup); | |||
4171 | // !taskdata->td_flags.native => currently force linear spawning of tasks | |||
4172 | // for GOMP_taskloop | |||
4173 | } else if (num_tasks > num_tasks_min && !taskdata->td_flags.native) { | |||
4174 | KA_TRACE(20, ("__kmpc_taskloop: T#%d, go recursive: tc %llu, #tasks %llu"if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, go recursive: tc %llu, #tasks %llu" "(%lld), grain %llu, extras %llu\n", gtid, tc, num_tasks, num_tasks_min , grainsize, extras); } | |||
4175 | "(%lld), grain %llu, extras %llu\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, go recursive: tc %llu, #tasks %llu" "(%lld), grain %llu, extras %llu\n", gtid, tc, num_tasks, num_tasks_min , grainsize, extras); } | |||
4176 | gtid, tc, num_tasks, num_tasks_min, grainsize, extras))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, go recursive: tc %llu, #tasks %llu" "(%lld), grain %llu, extras %llu\n", gtid, tc, num_tasks, num_tasks_min , grainsize, extras); }; | |||
4177 | __kmp_taskloop_recur(loc, gtid, task, lb, ub, st, ub_glob, num_tasks, | |||
4178 | grainsize, extras, tc, num_tasks_min, | |||
4179 | #if OMPT_SUPPORT1 | |||
4180 | OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0), | |||
4181 | #endif | |||
4182 | task_dup); | |||
4183 | } else { | |||
4184 | KA_TRACE(20, ("__kmpc_taskloop: T#%d, go linear: tc %llu, #tasks %llu"if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, go linear: tc %llu, #tasks %llu" "(%lld), grain %llu, extras %llu\n", gtid, tc, num_tasks, num_tasks_min , grainsize, extras); } | |||
4185 | "(%lld), grain %llu, extras %llu\n",if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, go linear: tc %llu, #tasks %llu" "(%lld), grain %llu, extras %llu\n", gtid, tc, num_tasks, num_tasks_min , grainsize, extras); } | |||
4186 | gtid, tc, num_tasks, num_tasks_min, grainsize, extras))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop: T#%d, go linear: tc %llu, #tasks %llu" "(%lld), grain %llu, extras %llu\n", gtid, tc, num_tasks, num_tasks_min , grainsize, extras); }; | |||
4187 | __kmp_taskloop_linear(loc, gtid, task, lb, ub, st, ub_glob, num_tasks, | |||
4188 | grainsize, extras, tc, | |||
4189 | #if OMPT_SUPPORT1 | |||
4190 | OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0), | |||
4191 | #endif | |||
4192 | task_dup); | |||
4193 | } | |||
4194 | ||||
4195 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
4196 | if (ompt_enabled.ompt_callback_work) { | |||
4197 | ompt_callbacks.ompt_callback(ompt_callback_work)ompt_callback_work_callback( | |||
4198 | ompt_work_taskloop, ompt_scope_end, &(team_info->parallel_data), | |||
4199 | &(task_info->task_data), tc, OMPT_GET_RETURN_ADDRESS(0)__builtin_return_address(0)); | |||
4200 | } | |||
4201 | #endif | |||
4202 | ||||
4203 | if (nogroup == 0) { | |||
4204 | #if OMPT_SUPPORT1 && OMPT_OPTIONAL1 | |||
4205 | OMPT_STORE_RETURN_ADDRESS(gtid)if (ompt_enabled.enabled && gtid >= 0 && __kmp_threads [gtid] && !__kmp_threads[gtid]->th.ompt_thread_info .return_address) __kmp_threads[gtid]->th.ompt_thread_info. return_address = __builtin_return_address(0); | |||
4206 | #endif | |||
4207 | __kmpc_end_taskgroup(loc, gtid); | |||
4208 | } | |||
4209 | KA_TRACE(20, ("__kmpc_taskloop(exit): T#%d\n", gtid))if (kmp_a_debug >= 20) { __kmp_debug_printf ("__kmpc_taskloop(exit): T#%d\n" , gtid); }; | |||
4210 | } | |||
4211 | ||||
4212 | #endif |