зеркало из https://github.com/mozilla/gecko-dev.git
93 строки
2.3 KiB
C++
93 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifdef WIN32
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# ifndef MOZILLA_GFX_TASKSCHEDULER_WIN32_H_
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# define MOZILLA_GFX_TASKSCHEDULER_WIN32_H_
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# include <windows.h>
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# include <list>
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# include "mozilla/RefPtr.h"
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# include "mozilla/gfx/CriticalSection.h"
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# include "mozilla/RefCounted.h"
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namespace mozilla {
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namespace gfx {
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class WorkerThread;
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class Job;
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// The public interface of this class must remain identical to its equivalent
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// in JobScheduler_posix.h
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class MultiThreadedJobQueue {
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public:
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enum AccessType { BLOCKING, NON_BLOCKING };
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MultiThreadedJobQueue() : mThreadsCount(0), mShuttingDown(false) {
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mAvailableEvent = ::CreateEventW(nullptr, TRUE, FALSE, nullptr);
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mShutdownEvent = ::CreateEventW(nullptr, TRUE, FALSE, nullptr);
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}
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~MultiThreadedJobQueue() {
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::CloseHandle(mAvailableEvent);
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::CloseHandle(mShutdownEvent);
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}
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bool WaitForJob(Job*& aOutJob) { return PopJob(aOutJob, BLOCKING); }
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bool PopJob(Job*& aOutJob, AccessType aAccess);
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void SubmitJob(Job* aJob);
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void ShutDown();
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size_t NumJobs();
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bool IsEmpty();
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void RegisterThread();
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void UnregisterThread();
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protected:
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std::list<Job*> mJobs;
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CriticalSection mSection;
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HANDLE mAvailableEvent;
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HANDLE mShutdownEvent;
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int32_t mThreadsCount;
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bool mShuttingDown;
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friend class WorkerThread;
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};
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// The public interface of this class must remain identical to its equivalent
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// in JobScheduler_posix.h
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class EventObject : public external::AtomicRefCounted<EventObject> {
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public:
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MOZ_DECLARE_REFCOUNTED_TYPENAME(EventObject)
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EventObject() { mEvent = ::CreateEventW(nullptr, TRUE, FALSE, nullptr); }
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~EventObject() { ::CloseHandle(mEvent); }
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void Wait() { ::WaitForSingleObject(mEvent, INFINITE); }
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bool Peak() { return ::WaitForSingleObject(mEvent, 0) == WAIT_OBJECT_0; }
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void Set() { ::SetEvent(mEvent); }
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protected:
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// TODO: it's expensive to create events so we should try to reuse them
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HANDLE mEvent;
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};
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} // namespace gfx
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} // namespace mozilla
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# endif
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#endif
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