//===----------------------------------------------------------------------===//
#include "llvm/Config/config.h"
+#include "llvm/Support/Compiler.h"
#include "llvm/Support/ThreadLocal.h"
//===----------------------------------------------------------------------===//
// Define all methods as no-ops if threading is explicitly disabled
namespace llvm {
using namespace sys;
-ThreadLocalImpl::ThreadLocalImpl() { }
+ThreadLocalImpl::ThreadLocalImpl() : data() { }
ThreadLocalImpl::~ThreadLocalImpl() { }
-void ThreadLocalImpl::setInstance(const void* d) { data = const_cast<void*>(d);}
-const void* ThreadLocalImpl::getInstance() { return data; }
-void ThreadLocalImpl::removeInstance() { data = 0; }
+void ThreadLocalImpl::setInstance(const void* d) {
+ static_assert(sizeof(d) <= sizeof(data), "size too big");
+ void **pd = reinterpret_cast<void**>(&data);
+ *pd = const_cast<void*>(d);
+}
+const void* ThreadLocalImpl::getInstance() {
+ void **pd = reinterpret_cast<void**>(&data);
+ return *pd;
+}
+void ThreadLocalImpl::removeInstance() {
+ setInstance(0);
+}
}
#else
namespace llvm {
using namespace sys;
-ThreadLocalImpl::ThreadLocalImpl() : data(0) {
- pthread_key_t* key = new pthread_key_t;
- int errorcode = pthread_key_create(key, NULL);
+ThreadLocalImpl::ThreadLocalImpl() : data() {
+ static_assert(sizeof(pthread_key_t) <= sizeof(data), "size too big");
+ pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
+ int errorcode = pthread_key_create(key, nullptr);
assert(errorcode == 0);
(void) errorcode;
- data = (void*)key;
}
ThreadLocalImpl::~ThreadLocalImpl() {
- pthread_key_t* key = static_cast<pthread_key_t*>(data);
+ pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
int errorcode = pthread_key_delete(*key);
assert(errorcode == 0);
(void) errorcode;
- delete key;
}
void ThreadLocalImpl::setInstance(const void* d) {
- pthread_key_t* key = static_cast<pthread_key_t*>(data);
+ pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
int errorcode = pthread_setspecific(*key, d);
assert(errorcode == 0);
(void) errorcode;
}
const void* ThreadLocalImpl::getInstance() {
- pthread_key_t* key = static_cast<pthread_key_t*>(data);
+ pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
return pthread_getspecific(*key);
}
void ThreadLocalImpl::removeInstance() {
- setInstance(0);
+ setInstance(nullptr);
}
}