LLVM  6.0.0svn
ThreadLocal.inc
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1 //=== llvm/Support/Unix/ThreadLocal.inc - Unix Thread Local Data -*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the Unix specific (non-pthread) ThreadLocal class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 //===----------------------------------------------------------------------===//
15 //=== WARNING: Implementation here must contain only generic UNIX code that
16 //=== is guaranteed to work on *all* UNIX variants.
17 //===----------------------------------------------------------------------===//
18 
19 #if defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_GETSPECIFIC)
20 
21 #include <cassert>
22 #include <pthread.h>
23 #include <stdlib.h>
24 
25 namespace llvm {
26 using namespace sys;
27 
29  static_assert(sizeof(pthread_key_t) <= sizeof(data), "size too big");
30  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
31  int errorcode = pthread_key_create(key, nullptr);
32  assert(errorcode == 0);
33  (void) errorcode;
34 }
35 
37  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
38  int errorcode = pthread_key_delete(*key);
39  assert(errorcode == 0);
40  (void) errorcode;
41 }
42 
43 void ThreadLocalImpl::setInstance(const void* d) {
44  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
45  int errorcode = pthread_setspecific(*key, d);
46  assert(errorcode == 0);
47  (void) errorcode;
48 }
49 
51  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
52  return pthread_getspecific(*key);
53 }
54 
56  setInstance(nullptr);
57 }
58 
59 }
60 #else
61 namespace llvm {
62 using namespace sys;
65 void ThreadLocalImpl::setInstance(const void* d) { data = const_cast<void*>(d);}
66 void *ThreadLocalImpl::getInstance() { return data; }
67 void ThreadLocalImpl::removeInstance() { setInstance(0); }
68 }
69 #endif
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
void setInstance(const void *d)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())