59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; 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_AUTOTASKQUEUE_H_
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#define MOZILLA_AUTOTASKQUEUE_H_
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#include "mozilla/RefPtr.h"
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#include "mozilla/SharedThreadPool.h"
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#include "mozilla/TaskQueue.h"
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namespace mozilla {
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// A convenience TaskQueue not requiring explicit shutdown.
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class AutoTaskQueue : public AbstractThread
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{
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public:
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explicit AutoTaskQueue(already_AddRefed<SharedThreadPool> aPool, bool aSupportsTailDispatch = false)
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: AbstractThread(aSupportsTailDispatch)
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, mTaskQueue(new TaskQueue(Move(aPool), aSupportsTailDispatch))
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{}
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TaskDispatcher& TailDispatcher() override
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{
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return mTaskQueue->TailDispatcher();
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}
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void Dispatch(already_AddRefed<nsIRunnable> aRunnable,
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DispatchFailureHandling aFailureHandling = AssertDispatchSuccess,
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DispatchReason aReason = NormalDispatch) override
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{
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mTaskQueue->Dispatch(Move(aRunnable), aFailureHandling, aReason);
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}
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// Blocks until all tasks finish executing.
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void AwaitIdle() { mTaskQueue->AwaitIdle(); }
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bool IsEmpty() { return mTaskQueue->IsEmpty(); }
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// Returns true if the current thread is currently running a Runnable in
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// the task queue.
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bool IsCurrentThreadIn() override { return mTaskQueue->IsCurrentThreadIn(); }
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private:
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~AutoTaskQueue()
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{
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RefPtr<TaskQueue> taskqueue = mTaskQueue;
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nsCOMPtr<nsIRunnable> task =
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NS_NewRunnableFunction([taskqueue]() { taskqueue->BeginShutdown(); });
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AbstractThread::MainThread()->Dispatch(task.forget());
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}
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RefPtr<TaskQueue> mTaskQueue;
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};
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} // namespace mozilla
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#endif
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