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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 MOZILLA_GFX_CRITICALSECTION_H_
#define MOZILLA_GFX_CRITICALSECTION_H_
#ifdef WIN32
#include <windows.h>
#else
#include <pthread.h>
#include "mozilla/DebugOnly.h"
#endif
namespace mozilla {
namespace gfx {
#ifdef WIN32
class CriticalSection {
public:
CriticalSection() { ::InitializeCriticalSection(&mCriticalSection); }
~CriticalSection() { ::DeleteCriticalSection(&mCriticalSection); }
void Enter() { ::EnterCriticalSection(&mCriticalSection); }
void Leave() { ::LeaveCriticalSection(&mCriticalSection); }
protected:
CRITICAL_SECTION mCriticalSection;
};
#else
// posix
class PosixCondvar;
class CriticalSection {
public:
CriticalSection() {
DebugOnly<int> err = pthread_mutex_init(&mMutex, nullptr);
MOZ_ASSERT(!err);
}
~CriticalSection() {
DebugOnly<int> err = pthread_mutex_destroy(&mMutex);
MOZ_ASSERT(!err);
}
void Enter() {
DebugOnly<int> err = pthread_mutex_lock(&mMutex);
MOZ_ASSERT(!err);
}
void Leave() {
DebugOnly<int> err = pthread_mutex_unlock(&mMutex);
MOZ_ASSERT(!err);
}
protected:
pthread_mutex_t mMutex;
friend class PosixCondVar;
};
#endif
/// RAII helper.
struct CriticalSectionAutoEnter {
explicit CriticalSectionAutoEnter(CriticalSection* aSection) : mSection(aSection) { mSection->Enter(); }
~CriticalSectionAutoEnter() { mSection->Leave(); }
protected:
CriticalSection* mSection;
};
} // namespace
} // namespace
#endif
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