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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_MAIN_LOOP_H_
#define CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "content/browser/browser_process_sub_thread.h"
#include "content/public/browser/browser_main_runner.h"
namespace base {
class CommandLine;
class FilePath;
class HighResolutionTimerManager;
class MessageLoop;
class PowerMonitor;
class SystemMonitor;
namespace debug {
class TraceMemoryController;
class TraceEventSystemStatsMonitor;
} // namespace debug
} // namespace base
namespace media {
class AudioManager;
class MidiManager;
class UserInputMonitor;
} // namespace media
namespace net {
class NetworkChangeNotifier;
} // namespace net
namespace content {
class AudioMirroringManager;
class BrowserMainParts;
class BrowserOnlineStateObserver;
class BrowserShutdownImpl;
class BrowserThreadImpl;
class MediaStreamManager;
class ResourceDispatcherHostImpl;
class SpeechRecognitionManagerImpl;
class StartupTaskRunner;
class TimeZoneMonitor;
struct MainFunctionParams;
#if defined(OS_LINUX)
class DeviceMonitorLinux;
#elif defined(OS_MACOSX)
class DeviceMonitorMac;
#elif defined(OS_WIN)
class SystemMessageWindowWin;
#endif
// Implements the main browser loop stages called from BrowserMainRunner.
// See comments in browser_main_parts.h for additional info.
class CONTENT_EXPORT BrowserMainLoop {
public:
// Returns the current instance. This is used to get access to the getters
// that return objects which are owned by this class.
static BrowserMainLoop* GetInstance();
explicit BrowserMainLoop(const MainFunctionParams& parameters);
virtual ~BrowserMainLoop();
void Init();
void EarlyInitialization();
// Initializes the toolkit. Returns whether the toolkit initialization was
// successful or not.
bool InitializeToolkit();
void MainMessageLoopStart();
// Create and start running the tasks we need to complete startup. Note that
// this can be called more than once (currently only on Android) if we get a
// request for synchronous startup while the tasks created by asynchronous
// startup are still running.
void CreateStartupTasks();
// Perform the default message loop run logic.
void RunMainMessageLoopParts();
// Performs the shutdown sequence, starting with PostMainMessageLoopRun
// through stopping threads to PostDestroyThreads.
void ShutdownThreadsAndCleanUp();
int GetResultCode() const { return result_code_; }
media::AudioManager* audio_manager() const { return audio_manager_.get(); }
AudioMirroringManager* audio_mirroring_manager() const {
return audio_mirroring_manager_.get();
}
MediaStreamManager* media_stream_manager() const {
return media_stream_manager_.get();
}
media::UserInputMonitor* user_input_monitor() const {
return user_input_monitor_.get();
}
media::MidiManager* midi_manager() const { return midi_manager_.get(); }
base::Thread* indexed_db_thread() const { return indexed_db_thread_.get(); }
bool is_tracing_startup() const { return is_tracing_startup_; }
#if defined(OS_MACOSX) && !defined(OS_IOS)
DeviceMonitorMac* device_monitor_mac() const {
return device_monitor_mac_.get();
}
#endif
private:
class MemoryObserver;
// For ShutdownThreadsAndCleanUp.
friend class BrowserShutdownImpl;
void InitializeMainThread();
// Called just before creating the threads
int PreCreateThreads();
// Create all secondary threads.
int CreateThreads();
// Called right after the browser threads have been started.
int BrowserThreadsStarted();
int PreMainMessageLoopRun();
void MainMessageLoopRun();
void InitStartupTracing(const base::CommandLine& command_line);
void EndStartupTracing(const base::FilePath& trace_file);
// Members initialized on construction ---------------------------------------
const MainFunctionParams& parameters_;
const base::CommandLine& parsed_command_line_;
int result_code_;
// True if the non-UI threads were created.
bool created_threads_;
// Members initialized in |MainMessageLoopStart()| ---------------------------
scoped_ptr<base::MessageLoop> main_message_loop_;
scoped_ptr<base::SystemMonitor> system_monitor_;
scoped_ptr<base::PowerMonitor> power_monitor_;
scoped_ptr<base::HighResolutionTimerManager> hi_res_timer_manager_;
scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
// user_input_monitor_ has to outlive audio_manager_, so declared first.
scoped_ptr<media::UserInputMonitor> user_input_monitor_;
scoped_ptr<media::AudioManager> audio_manager_;
scoped_ptr<media::MidiManager> midi_manager_;
scoped_ptr<AudioMirroringManager> audio_mirroring_manager_;
scoped_ptr<MediaStreamManager> media_stream_manager_;
// Per-process listener for online state changes.
scoped_ptr<BrowserOnlineStateObserver> online_state_observer_;
#if defined(OS_WIN)
scoped_ptr<SystemMessageWindowWin> system_message_window_;
#elif defined(USE_UDEV)
scoped_ptr<DeviceMonitorLinux> device_monitor_linux_;
#elif defined(OS_MACOSX) && !defined(OS_IOS)
scoped_ptr<DeviceMonitorMac> device_monitor_mac_;
#endif
// The startup task runner is created by CreateStartupTasks()
scoped_ptr<StartupTaskRunner> startup_task_runner_;
// Destroy parts_ before main_message_loop_ (required) and before other
// classes constructed in content (but after main_thread_).
scoped_ptr<BrowserMainParts> parts_;
// Members initialized in |InitializeMainThread()| ---------------------------
// This must get destroyed before other threads that are created in parts_.
scoped_ptr<BrowserThreadImpl> main_thread_;
// Members initialized in |BrowserThreadsStarted()| --------------------------
scoped_ptr<ResourceDispatcherHostImpl> resource_dispatcher_host_;
scoped_ptr<SpeechRecognitionManagerImpl> speech_recognition_manager_;
scoped_ptr<TimeZoneMonitor> time_zone_monitor_;
// Members initialized in |RunMainMessageLoopParts()| ------------------------
scoped_ptr<BrowserProcessSubThread> db_thread_;
scoped_ptr<BrowserProcessSubThread> file_user_blocking_thread_;
scoped_ptr<BrowserProcessSubThread> file_thread_;
scoped_ptr<BrowserProcessSubThread> process_launcher_thread_;
scoped_ptr<BrowserProcessSubThread> cache_thread_;
scoped_ptr<BrowserProcessSubThread> io_thread_;
scoped_ptr<base::Thread> indexed_db_thread_;
scoped_ptr<MemoryObserver> memory_observer_;
scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_;
scoped_ptr<base::debug::TraceEventSystemStatsMonitor> system_stats_monitor_;
bool is_tracing_startup_;
DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
};
} // namespace content
#endif // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
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