mozglue/misc/Mutex_windows.cpp
author Alexandre Poirot <poirot.alex@gmail.com>
Sat, 02 Feb 2019 11:24:39 +0000
changeset 456549 fead89ec2d1bb342ed1feb0616ec241411baed8a
parent 453088 c275c8909c57f4e008756e24de1bc5b3f1333a4f
permissions -rw-r--r--
Bug 1465635 - Use Target.title to fetch target's title instead of using its form. r=yulia Depends on D15828 Differential Revision: https://phabricator.services.mozilla.com/D15830

/* -*- 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/. */

#include "mozilla/Assertions.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/PlatformMutex.h"

#include <windows.h>

#include "MutexPlatformData_windows.h"

mozilla::detail::MutexImpl::MutexImpl(recordreplay::Behavior aRecorded) {
  InitializeSRWLock(&platformData()->lock);
}

mozilla::detail::MutexImpl::~MutexImpl() {}

void mozilla::detail::MutexImpl::lock() {
  AcquireSRWLockExclusive(&platformData()->lock);
}

bool mozilla::detail::MutexImpl::tryLock() { return mutexTryLock(); }

bool mozilla::detail::MutexImpl::mutexTryLock() {
  return !!TryAcquireSRWLockExclusive(&platformData()->lock);
}

void mozilla::detail::MutexImpl::unlock() {
  ReleaseSRWLockExclusive(&platformData()->lock);
}

mozilla::detail::MutexImpl::PlatformData*
mozilla::detail::MutexImpl::platformData() {
  static_assert(sizeof(platformData_) >= sizeof(PlatformData),
                "platformData_ is too small");
  return reinterpret_cast<PlatformData*>(platformData_);
}