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) {
29 typedef int SIZE_TOO_BIG[sizeof(d) <= sizeof(data) ? 1 : -1];
30 void **pd = reinterpret_cast<void**>(&data);
31 *pd = const_cast<void*>(d);
33 const void* ThreadLocalImpl::getInstance() { return data; }
34 void ThreadLocalImpl::removeInstance() {
35 void **pd = reinterpret_cast<void**>(&data);
41 #if defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_GETSPECIFIC)
50 ThreadLocalImpl::ThreadLocalImpl() : data() {
51 typedef int SIZE_TOO_BIG[sizeof(pthread_key_t) <= sizeof(data) ? 1 : -1];
52 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
53 int errorcode = pthread_key_create(key, NULL);
54 assert(errorcode == 0);
58 ThreadLocalImpl::~ThreadLocalImpl() {
59 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
60 int errorcode = pthread_key_delete(*key);
61 assert(errorcode == 0);
65 void ThreadLocalImpl::setInstance(const void* d) {
66 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
67 int errorcode = pthread_setspecific(*key, d);
68 assert(errorcode == 0);
72 const void* ThreadLocalImpl::getInstance() {
73 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
74 return pthread_getspecific(*key);
77 void ThreadLocalImpl::removeInstance() {
83 #elif defined(LLVM_ON_UNIX)
84 #include "Unix/ThreadLocal.inc"
85 #elif defined( LLVM_ON_WIN32)
86 #include "Windows/ThreadLocal.inc"
88 #warning Neither LLVM_ON_UNIX nor LLVM_ON_WIN32 set in Support/ThreadLocal.cpp