shared_mutex.cpp

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#include <wowlib/core/shared_mutex.hpp>
 
#if defined(_WIN32) && defined(__GNUC__) && !defined(__clang__)
 
// ifndef-guarded: MSYS2's g++ already predefines NOMINMAX.
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#ifndef NOMINMAX
#define NOMINMAX
#endif
#include <windows.h>
 
static_assert(sizeof(void*) == sizeof(SRWLOCK), "SRWLOCK must stay pointer-sized for the header's inline storage");
namespace wowlib {
  void SharedMutex::lock() noexcept {
    AcquireSRWLockExclusive(reinterpret_cast<PSRWLOCK>(&_lock));
  }
 
  bool SharedMutex::try_lock() noexcept {
    return TryAcquireSRWLockExclusive(reinterpret_cast<PSRWLOCK>(&_lock)) != 0;
  }
 
  void SharedMutex::unlock() noexcept {
    ReleaseSRWLockExclusive(reinterpret_cast<PSRWLOCK>(&_lock));
  }
 
  void SharedMutex::lock_shared() noexcept {
    AcquireSRWLockShared(reinterpret_cast<PSRWLOCK>(&_lock));
  }
 
  bool SharedMutex::try_lock_shared() noexcept {
    return TryAcquireSRWLockShared(reinterpret_cast<PSRWLOCK>(&_lock)) != 0;
  }
 
  void SharedMutex::unlock_shared() noexcept {
    ReleaseSRWLockShared(reinterpret_cast<PSRWLOCK>(&_lock));
  }
}
 
#endif