| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "remoting/client/queued_task_poster.h" |
| |
| #include "base/bind.h" |
| #include "base/check.h" |
| #include "base/location.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| |
| namespace remoting { |
| |
| QueuedTaskPoster::QueuedTaskPoster( |
| scoped_refptr<base::SingleThreadTaskRunner> target_task_runner) |
| : target_task_runner_(target_task_runner) {} |
| |
| QueuedTaskPoster::~QueuedTaskPoster() { |
| if (source_task_runner_) { |
| DCHECK(source_task_runner_->BelongsToCurrentThread()); |
| } |
| } |
| |
| void QueuedTaskPoster::AddTask(base::OnceClosure closure) { |
| if (!source_task_runner_) { |
| source_task_runner_ = base::ThreadTaskRunnerHandle::Get(); |
| } |
| DCHECK(source_task_runner_->BelongsToCurrentThread()); |
| task_queue_.emplace(std::move(closure)); |
| if (!transfer_task_scheduled_) { |
| source_task_runner_->PostTask( |
| FROM_HERE, base::BindOnce(&QueuedTaskPoster::TransferTaskQueue, |
| weak_factory_.GetWeakPtr())); |
| transfer_task_scheduled_ = true; |
| } |
| } |
| |
| static void ConsumeTaskQueue(base::queue<base::OnceClosure>* queue) { |
| while (!queue->empty()) { |
| std::move(queue->front()).Run(); |
| queue->pop(); |
| } |
| } |
| |
| void QueuedTaskPoster::TransferTaskQueue() { |
| DCHECK(transfer_task_scheduled_); |
| transfer_task_scheduled_ = false; |
| base::queue<base::OnceClosure>* queue_to_transfer = |
| new base::queue<base::OnceClosure>(); |
| queue_to_transfer->swap(task_queue_); |
| target_task_runner_->PostTask( |
| FROM_HERE, |
| base::BindOnce(&ConsumeTaskQueue, base::Owned(queue_to_transfer))); |
| } |
| |
| } // namespace remoting |