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