#include "Win32.h"
-// FIXME: THIS IS NOT THREAD-SAFE!!
-// Windows does not have reader-writer locks pre-Vista. If you want to have
-// thread-safe LLVM on Windows, for now at least, you need to use a pthreads
-// replacement library.
+// FIXME: Windows does not have reader-writer locks pre-Vista. If you want
+// real reader-writer locks, you a pthreads implementation for Windows.
namespace llvm {
using namespace sys;
-RWMutex::RWMutex() { }
+RWMutex::RWMutex() {
+ data_ = calloc(1, sizeof(CRITICAL_SECTION));
+ InitializeCriticalSection(static_cast<LPCRITICAL_SECTION>(data_));
+}
-RWMutex::~RWMutex() { }
+RWMutex::~RWMutex() {
+ DeleteCriticalSection(static_cast<LPCRITICAL_SECTION>(data_));
+ free(data_);
+}
bool RWMutex::reader_acquire() {
+ EnterCriticalSection(static_cast<LPCRITICAL_SECTION>(data_));
return true;
}
bool RWMutex::reader_release() {
+ LeaveCriticalSection(static_cast<LPCRITICAL_SECTION>(data_));
return true;
}
bool RWMutex::writer_acquire() {
+ EnterCriticalSection(static_cast<LPCRITICAL_SECTION>(data_));
return true;
}
bool RWMutex::writer_release() {
+ LeaveCriticalSection(static_cast<LPCRITICAL_SECTION>(data_));
return true;
}