chromium/content/browser/scheduler/browser_task_executor.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_SCHEDULER_BROWSER_TASK_EXECUTOR_H_
#define CONTENT_BROWSER_SCHEDULER_BROWSER_TASK_EXECUTOR_H_

#include <memory>

#include "base/gtest_prod_util.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "content/browser/scheduler/browser_io_thread_delegate.h"
#include "content/browser/scheduler/browser_ui_thread_scheduler.h"
#include "content/common/content_export.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"

// The BrowserTaskExecutor's job is to map base::TaskTraits to actual task
// queues for the browser process.
//
// We actually have two TaskExecutors:
// * BrowserTaskExecutor::UIThreadExecutor registered with UI thread TLS.
// * BrowserTaskExecutor::IOThreadExecutor registered with IO thread TLS.
//
// This lets us efficiently implement base::CurrentThread on UI and IO threads.
namespace content {

class BrowserTaskExecutorTest;
class BrowserProcessIOThread;

class CONTENT_EXPORT BaseBrowserTaskExecutor { … };

class CONTENT_EXPORT BrowserTaskExecutor : public BaseBrowserTaskExecutor { … };

}  // namespace content

#endif  // CONTENT_BROWSER_SCHEDULER_BROWSER_TASK_EXECUTOR_H_