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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/. */
#ifdef WIN32
#ifndef MOZILLA_GFX_TASKSCHEDULER_WIN32_H_
#define MOZILLA_GFX_TASKSCHEDULER_WIN32_H_
#include <windows.h>
#include <list>
#include "mozilla/RefPtr.h"
#include "mozilla/gfx/CriticalSection.h"
#include "mozilla/RefCounted.h"
namespace mozilla {
namespace gfx {
class WorkerThread;
class Job;
// The public interface of this class must remain identical to its equivalent
// in JobScheduler_posix.h
class MultiThreadedJobQueue {
public:
enum AccessType {
BLOCKING,
NON_BLOCKING
};
MultiThreadedJobQueue()
: mThreadsCount(0)
, mShuttingDown(false)
{
mAvailableEvent = ::CreateEventW(nullptr, TRUE, FALSE, nullptr);
mShutdownEvent = ::CreateEventW(nullptr, TRUE, FALSE, nullptr);
}
~MultiThreadedJobQueue()
{
::CloseHandle(mAvailableEvent);
::CloseHandle(mShutdownEvent);
}
bool WaitForJob(Job*& aOutJob) { return PopJob(aOutJob, BLOCKING); }
bool PopJob(Job*& aOutJob, AccessType aAccess);
void SubmitJob(Job* aJob);
void ShutDown();
size_t NumJobs();
bool IsEmpty();
void RegisterThread();
void UnregisterThread();
protected:
std::list<Job*> mJobs;
CriticalSection mSection;
HANDLE mAvailableEvent;
HANDLE mShutdownEvent;
int32_t mThreadsCount;
bool mShuttingDown;
friend class WorkerThread;
};
// The public interface of this class must remain identical to its equivalent
// in JobScheduler_posix.h
class EventObject : public external::AtomicRefCounted<EventObject>
{
public:
MOZ_DECLARE_REFCOUNTED_TYPENAME(EventObject)
EventObject() { mEvent = ::CreateEventW(nullptr, TRUE, FALSE, nullptr); }
~EventObject() { ::CloseHandle(mEvent); }
void Wait() { ::WaitForSingleObject(mEvent, INFINITE); }
bool Peak() { return ::WaitForSingleObject(mEvent, 0) == WAIT_OBJECT_0; }
void Set() { ::SetEvent(mEvent); }
protected:
// TODO: it's expensive to create events so we should try to reuse them
HANDLE mEvent;
};
} // namespace
} // namespace
#endif
#endif
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