1 //===- ThreadLocal.cpp - Thread Local Data ----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the llvm::sys::ThreadLocal class.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Config/config.h"
15 #include "llvm/Support/ThreadLocal.h"
17 //===----------------------------------------------------------------------===//
18 //=== WARNING: Implementation here must contain only TRULY operating system
19 //=== independent code.
20 //===----------------------------------------------------------------------===//
22 #if !defined(LLVM_ENABLE_THREADS) || LLVM_ENABLE_THREADS == 0
23 // Define all methods as no-ops if threading is explicitly disabled
26 ThreadLocalImpl::ThreadLocalImpl() { }
27 ThreadLocalImpl::~ThreadLocalImpl() { }
28 void ThreadLocalImpl::setInstance(const void* d) { data = const_cast<void*>(d);}
29 const void* ThreadLocalImpl::getInstance() { return data; }
30 void ThreadLocalImpl::removeInstance() { data = 0; }
34 #if defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_GETSPECIFIC)
43 ThreadLocalImpl::ThreadLocalImpl() : data(0) {
44 pthread_key_t* key = new pthread_key_t;
45 int errorcode = pthread_key_create(key, NULL);
46 assert(errorcode == 0);
51 ThreadLocalImpl::~ThreadLocalImpl() {
52 pthread_key_t* key = static_cast<pthread_key_t*>(data);
53 int errorcode = pthread_key_delete(*key);
54 assert(errorcode == 0);
59 void ThreadLocalImpl::setInstance(const void* d) {
60 pthread_key_t* key = static_cast<pthread_key_t*>(data);
61 int errorcode = pthread_setspecific(*key, d);
62 assert(errorcode == 0);
66 const void* ThreadLocalImpl::getInstance() {
67 pthread_key_t* key = static_cast<pthread_key_t*>(data);
68 return pthread_getspecific(*key);
71 void ThreadLocalImpl::removeInstance() {
77 #elif defined(LLVM_ON_UNIX)
78 #include "Unix/ThreadLocal.inc"
79 #elif defined( LLVM_ON_WIN32)
80 #include "Windows/ThreadLocal.inc"
82 #warning Neither LLVM_ON_UNIX nor LLVM_ON_WIN32 set in Support/ThreadLocal.cpp