зеркало из https://github.com/mozilla/gecko-dev.git
96 строки
3.1 KiB
C++
96 строки
3.1 KiB
C++
/* -*- 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/. */
|
|
|
|
#ifndef mozilla_ThreadEventQueue_h
|
|
#define mozilla_ThreadEventQueue_h
|
|
|
|
#include "mozilla/EventQueue.h"
|
|
#include "mozilla/CondVar.h"
|
|
#include "mozilla/SynchronizedEventQueue.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsTArray.h"
|
|
|
|
class nsIEventTarget;
|
|
class nsISerialEventTarget;
|
|
class nsIThreadObserver;
|
|
|
|
namespace mozilla {
|
|
|
|
class EventQueue;
|
|
class ThreadEventTarget;
|
|
|
|
// A ThreadEventQueue implements normal monitor-style synchronization over the
|
|
// EventQueue. It also implements PushEventQueue and PopEventQueue for workers
|
|
// (see the documentation below for an explanation of those). All threads use a
|
|
// ThreadEventQueue as their event queue. Although for the main thread this
|
|
// simply forwards events to the TaskController.
|
|
class ThreadEventQueue final : public SynchronizedEventQueue {
|
|
public:
|
|
explicit ThreadEventQueue(UniquePtr<EventQueue> aQueue,
|
|
bool aIsMainThread = false);
|
|
|
|
bool PutEvent(already_AddRefed<nsIRunnable>&& aEvent,
|
|
EventQueuePriority aPriority) final;
|
|
|
|
already_AddRefed<nsIRunnable> GetEvent(
|
|
bool aMayWait, mozilla::TimeDuration* aLastEventDelay = nullptr) final;
|
|
bool HasPendingEvent() final;
|
|
|
|
bool ShutdownIfNoPendingEvents() final;
|
|
|
|
void Disconnect(const MutexAutoLock& aProofOfLock) final {}
|
|
|
|
nsresult RegisterShutdownTask(nsITargetShutdownTask* aTask) final;
|
|
nsresult UnregisterShutdownTask(nsITargetShutdownTask* aTask) final;
|
|
void RunShutdownTasks() final;
|
|
|
|
already_AddRefed<nsISerialEventTarget> PushEventQueue() final;
|
|
void PopEventQueue(nsIEventTarget* aTarget) final;
|
|
|
|
already_AddRefed<nsIThreadObserver> GetObserver() final;
|
|
already_AddRefed<nsIThreadObserver> GetObserverOnThread() final;
|
|
void SetObserver(nsIThreadObserver* aObserver) final;
|
|
|
|
Mutex& MutexRef() { return mLock; }
|
|
|
|
size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) override;
|
|
|
|
private:
|
|
class NestedSink;
|
|
|
|
virtual ~ThreadEventQueue();
|
|
|
|
bool PutEventInternal(already_AddRefed<nsIRunnable>&& aEvent,
|
|
EventQueuePriority aPriority, NestedSink* aQueue);
|
|
|
|
const UniquePtr<EventQueue> mBaseQueue MOZ_GUARDED_BY(mLock);
|
|
|
|
struct NestedQueueItem {
|
|
UniquePtr<EventQueue> mQueue;
|
|
RefPtr<ThreadEventTarget> mEventTarget;
|
|
|
|
NestedQueueItem(UniquePtr<EventQueue> aQueue,
|
|
ThreadEventTarget* aEventTarget);
|
|
};
|
|
|
|
nsTArray<NestedQueueItem> mNestedQueues MOZ_GUARDED_BY(mLock);
|
|
|
|
Mutex mLock;
|
|
CondVar mEventsAvailable MOZ_GUARDED_BY(mLock);
|
|
|
|
bool mEventsAreDoomed MOZ_GUARDED_BY(mLock) = false;
|
|
nsCOMPtr<nsIThreadObserver> mObserver MOZ_GUARDED_BY(mLock);
|
|
nsTArray<nsCOMPtr<nsITargetShutdownTask>> mShutdownTasks
|
|
MOZ_GUARDED_BY(mLock);
|
|
bool mShutdownTasksRun MOZ_GUARDED_BY(mLock) = false;
|
|
|
|
const bool mIsMainThread;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_ThreadEventQueue_h
|