LLVM  7.0.0svn
ThreadLocal.inc
Go to the documentation of this file.
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 #include "llvm/Config/config.h"
20 
21 #if defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_GETSPECIFIC)
22 
23 #include <cassert>
24 #include <pthread.h>
25 #include <stdlib.h>
26 
27 namespace llvm {
28 using namespace sys;
29 
31  static_assert(sizeof(pthread_key_t) <= sizeof(data), "size too big");
32  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
33  int errorcode = pthread_key_create(key, nullptr);
34  assert(errorcode == 0);
35  (void) errorcode;
36 }
37 
39  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
40  int errorcode = pthread_key_delete(*key);
41  assert(errorcode == 0);
42  (void) errorcode;
43 }
44 
45 void ThreadLocalImpl::setInstance(const void* d) {
46  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
47  int errorcode = pthread_setspecific(*key, d);
48  assert(errorcode == 0);
49  (void) errorcode;
50 }
51 
53  pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
54  return pthread_getspecific(*key);
55 }
56 
58  setInstance(nullptr);
59 }
60 
61 }
62 #else
63 namespace llvm {
64 using namespace sys;
67 void ThreadLocalImpl::setInstance(const void* d) { data = const_cast<void*>(d);}
68 void *ThreadLocalImpl::getInstance() { return data; }
69 void ThreadLocalImpl::removeInstance() { setInstance(0); }
70 }
71 #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())