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// Copyright (c) 2012 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.
#ifndef CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_
#define CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_
#include "base/threading/thread.h"
#include "content/common/content_export.h"
#include "content/public/browser/browser_thread.h"
namespace content {
class CONTENT_EXPORT BrowserThreadImpl : public BrowserThread,
public base::Thread {
public:
// Construct a BrowserThreadImpl with the supplied identifier. It is an error
// to construct a BrowserThreadImpl that already exists.
explicit BrowserThreadImpl(BrowserThread::ID identifier);
// Special constructor for the main (UI) thread and unittests. If a
// |message_loop| is provied, we use a dummy thread here since the main
// thread already exists.
BrowserThreadImpl(BrowserThread::ID identifier,
base::MessageLoop* message_loop);
~BrowserThreadImpl() override;
bool StartWithOptions(const Options& options);
static void ShutdownThreadPool();
protected:
void Init() override;
void Run(base::MessageLoop* message_loop) override;
void CleanUp() override;
private:
// We implement all the functionality of the public BrowserThread
// functions, but state is stored in the BrowserThreadImpl to keep
// the API cleaner. Therefore make BrowserThread a friend class.
friend class BrowserThread;
// The following are unique function names that makes it possible to tell
// the thread id from the callstack alone in crash dumps.
void UIThreadRun(base::MessageLoop* message_loop);
void DBThreadRun(base::MessageLoop* message_loop);
void FileThreadRun(base::MessageLoop* message_loop);
void FileUserBlockingThreadRun(base::MessageLoop* message_loop);
void ProcessLauncherThreadRun(base::MessageLoop* message_loop);
void CacheThreadRun(base::MessageLoop* message_loop);
void IOThreadRun(base::MessageLoop* message_loop);
static bool PostTaskHelper(
BrowserThread::ID identifier,
const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay,
bool nestable);
// Common initialization code for the constructors.
void Initialize();
// For testing.
friend class ContentTestSuiteBaseListener;
friend class TestBrowserThreadBundle;
static void FlushThreadPoolHelperForTesting();
// The identifier of this thread. Only one thread can exist with a given
// identifier at a given time.
ID identifier_;
};
} // namespace content
#endif // CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_
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