81 lines
1.7 KiB
C++
81 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_CRITICALSECTION_H_
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#define MOZILLA_GFX_CRITICALSECTION_H_
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#ifdef WIN32
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#include <windows.h>
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#else
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#include <pthread.h>
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#include "mozilla/DebugOnly.h"
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#endif
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namespace mozilla {
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namespace gfx {
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#ifdef WIN32
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class CriticalSection {
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public:
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CriticalSection() { ::InitializeCriticalSection(&mCriticalSection); }
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~CriticalSection() { ::DeleteCriticalSection(&mCriticalSection); }
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void Enter() { ::EnterCriticalSection(&mCriticalSection); }
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void Leave() { ::LeaveCriticalSection(&mCriticalSection); }
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protected:
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CRITICAL_SECTION mCriticalSection;
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};
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#else
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// posix
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class PosixCondvar;
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class CriticalSection {
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public:
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CriticalSection() {
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DebugOnly<int> err = pthread_mutex_init(&mMutex, nullptr);
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MOZ_ASSERT(!err);
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}
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~CriticalSection() {
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DebugOnly<int> err = pthread_mutex_destroy(&mMutex);
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MOZ_ASSERT(!err);
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}
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void Enter() {
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DebugOnly<int> err = pthread_mutex_lock(&mMutex);
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MOZ_ASSERT(!err);
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}
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void Leave() {
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DebugOnly<int> err = pthread_mutex_unlock(&mMutex);
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MOZ_ASSERT(!err);
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}
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protected:
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pthread_mutex_t mMutex;
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friend class PosixCondVar;
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};
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#endif
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/// RAII helper.
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struct CriticalSectionAutoEnter {
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explicit CriticalSectionAutoEnter(CriticalSection* aSection) : mSection(aSection) { mSection->Enter(); }
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~CriticalSectionAutoEnter() { mSection->Leave(); }
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protected:
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CriticalSection* mSection;
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};
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} // namespace
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} // namespace
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#endif
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