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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef XP_WIN
# error This file should only be compiled on Windows.
#endif
#include "mozilla/PlatformRWLock.h"
#include <windows.h>
#define NativeHandle(m) (reinterpret_cast<SRWLOCK*>(&m))
mozilla::detail::RWLockImpl::RWLockImpl() {
static_assert(sizeof(SRWLOCK) <= sizeof(mRWLock), "SRWLOCK is too big!");
InitializeSRWLock(NativeHandle(mRWLock));
}
mozilla::detail::RWLockImpl::~RWLockImpl() {}
bool mozilla::detail::RWLockImpl::tryReadLock() {
return TryAcquireSRWLockShared(NativeHandle(mRWLock));
}
void mozilla::detail::RWLockImpl::readLock() {
AcquireSRWLockShared(NativeHandle(mRWLock));
}
void mozilla::detail::RWLockImpl::readUnlock() {
ReleaseSRWLockShared(NativeHandle(mRWLock));
}
bool mozilla::detail::RWLockImpl::tryWriteLock() {
return TryAcquireSRWLockExclusive(NativeHandle(mRWLock));
}
void mozilla::detail::RWLockImpl::writeLock() {
AcquireSRWLockExclusive(NativeHandle(mRWLock));
}
void mozilla::detail::RWLockImpl::writeUnlock() {
ReleaseSRWLockExclusive(NativeHandle(mRWLock));
}
#undef NativeHandle
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