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comparison lib/Support/ThreadLocal.cpp @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children 60c9769439b8
comparison
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34:e874dbf0ad9d 77:54457678186b
10 // This file implements the llvm::sys::ThreadLocal class. 10 // This file implements the llvm::sys::ThreadLocal class.
11 // 11 //
12 //===----------------------------------------------------------------------===// 12 //===----------------------------------------------------------------------===//
13 13
14 #include "llvm/Config/config.h" 14 #include "llvm/Config/config.h"
15 #include "llvm/Support/Compiler.h"
15 #include "llvm/Support/ThreadLocal.h" 16 #include "llvm/Support/ThreadLocal.h"
16 17
17 //===----------------------------------------------------------------------===// 18 //===----------------------------------------------------------------------===//
18 //=== WARNING: Implementation here must contain only TRULY operating system 19 //=== WARNING: Implementation here must contain only TRULY operating system
19 //=== independent code. 20 //=== independent code.
21 22
22 #if !defined(LLVM_ENABLE_THREADS) || LLVM_ENABLE_THREADS == 0 23 #if !defined(LLVM_ENABLE_THREADS) || LLVM_ENABLE_THREADS == 0
23 // Define all methods as no-ops if threading is explicitly disabled 24 // Define all methods as no-ops if threading is explicitly disabled
24 namespace llvm { 25 namespace llvm {
25 using namespace sys; 26 using namespace sys;
26 ThreadLocalImpl::ThreadLocalImpl() { } 27 ThreadLocalImpl::ThreadLocalImpl() : data() { }
27 ThreadLocalImpl::~ThreadLocalImpl() { } 28 ThreadLocalImpl::~ThreadLocalImpl() { }
28 void ThreadLocalImpl::setInstance(const void* d) { 29 void ThreadLocalImpl::setInstance(const void* d) {
29 typedef int SIZE_TOO_BIG[sizeof(d) <= sizeof(data) ? 1 : -1]; 30 static_assert(sizeof(d) <= sizeof(data), "size too big");
30 void **pd = reinterpret_cast<void**>(&data); 31 void **pd = reinterpret_cast<void**>(&data);
31 *pd = const_cast<void*>(d); 32 *pd = const_cast<void*>(d);
32 } 33 }
33 const void* ThreadLocalImpl::getInstance() { 34 const void* ThreadLocalImpl::getInstance() {
34 void **pd = reinterpret_cast<void**>(&data); 35 void **pd = reinterpret_cast<void**>(&data);
48 49
49 namespace llvm { 50 namespace llvm {
50 using namespace sys; 51 using namespace sys;
51 52
52 ThreadLocalImpl::ThreadLocalImpl() : data() { 53 ThreadLocalImpl::ThreadLocalImpl() : data() {
53 typedef int SIZE_TOO_BIG[sizeof(pthread_key_t) <= sizeof(data) ? 1 : -1]; 54 static_assert(sizeof(pthread_key_t) <= sizeof(data), "size too big");
54 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data); 55 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
55 int errorcode = pthread_key_create(key, NULL); 56 int errorcode = pthread_key_create(key, nullptr);
56 assert(errorcode == 0); 57 assert(errorcode == 0);
57 (void) errorcode; 58 (void) errorcode;
58 } 59 }
59 60
60 ThreadLocalImpl::~ThreadLocalImpl() { 61 ThreadLocalImpl::~ThreadLocalImpl() {
75 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data); 76 pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
76 return pthread_getspecific(*key); 77 return pthread_getspecific(*key);
77 } 78 }
78 79
79 void ThreadLocalImpl::removeInstance() { 80 void ThreadLocalImpl::removeInstance() {
80 setInstance(0); 81 setInstance(nullptr);
81 } 82 }
82 83
83 } 84 }
84 85
85 #elif defined(LLVM_ON_UNIX) 86 #elif defined(LLVM_ON_UNIX)