content/browser/browser_main_loop.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
   6 #define CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "content/browser/browser_process_sub_thread.h"
  11
  12 class CommandLine;
  13 class HighResolutionTimerManager;
  14
  15 namespace base {
  16 class MessageLoop;
  17 class PowerMonitor;
  18 class SystemMonitor;
  19 }
  20
  21 namespace media {
  22 class AudioManager;
  23 }
  24
  25 namespace net {
  26 class NetworkChangeNotifier;
  27 }
  28
  29 namespace content {
  30 class AudioMirroringManager;
  31 class BrowserMainParts;
  32 class BrowserOnlineStateObserver;
  33 class BrowserShutdownImpl;
  34 class BrowserThreadImpl;
  35 class MediaStreamManager;
  36 class ResourceDispatcherHostImpl;
  37 class SpeechRecognitionManagerImpl;
  38 class SystemMessageWindowWin;
  39 class WebKitThread;
  40 struct MainFunctionParams;
  41
  42 #if defined(OS_LINUX)
  43 class DeviceMonitorLinux;
  44 #elif defined(OS_MACOSX)
  45 class DeviceMonitorMac;
  46 #endif
  47
  48 // Implements the main browser loop stages called from BrowserMainRunner.
  49 // See comments in browser_main_parts.h for additional info.
  50 // All functions are to be called only on the UI thread unless otherwise noted.
  51 class BrowserMainLoop {
  52  public:
  53   class MemoryObserver;
  54   explicit BrowserMainLoop(const MainFunctionParams& parameters);
  55   virtual ~BrowserMainLoop();
  56
  57   void Init();
  58
  59   void EarlyInitialization();
  60   void InitializeToolkit();
  61   void MainMessageLoopStart();
  62
  63   // Create all secondary threads.
  64   void CreateThreads();
  65
  66   // Perform the default message loop run logic.
  67   void RunMainMessageLoopParts();
  68
  69   // Performs the shutdown sequence, starting with PostMainMessageLoopRun
  70   // through stopping threads to PostDestroyThreads.
  71   void ShutdownThreadsAndCleanUp();
  72
  73   int GetResultCode() const { return result_code_; }
  74
  75   // Can be called on any thread.
  76   static media::AudioManager* GetAudioManager();
  77   static AudioMirroringManager* GetAudioMirroringManager();
  78   static MediaStreamManager* GetMediaStreamManager();
  79
  80  private:
  81   // For ShutdownThreadsAndCleanUp.
  82   friend class BrowserShutdownImpl;
  83
  84   void InitializeMainThread();
  85
  86   // Called right after the browser threads have been started.
  87   void BrowserThreadsStarted();
  88
  89   void MainMessageLoopRun();
  90
  91   // Members initialized on construction ---------------------------------------
  92   const MainFunctionParams& parameters_;
  93   const CommandLine& parsed_command_line_;
  94   int result_code_;
  95
  96   // Members initialized in |MainMessageLoopStart()| ---------------------------
  97   scoped_ptr<base::MessageLoop> main_message_loop_;
  98   scoped_ptr<base::SystemMonitor> system_monitor_;
  99   scoped_ptr<base::PowerMonitor> power_monitor_;
 100   scoped_ptr<HighResolutionTimerManager> hi_res_timer_manager_;
 101   scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
 102   scoped_ptr<media::AudioManager> audio_manager_;
 103   scoped_ptr<AudioMirroringManager> audio_mirroring_manager_;
 104   scoped_ptr<MediaStreamManager> media_stream_manager_;
 105   // Per-process listener for online state changes.
 106   scoped_ptr<BrowserOnlineStateObserver> online_state_observer_;
 107 #if defined(OS_WIN)
 108   scoped_ptr<SystemMessageWindowWin> system_message_window_;
 109 #elif defined(OS_LINUX)
 110   scoped_ptr<DeviceMonitorLinux> device_monitor_linux_;
 111 #elif defined(OS_MACOSX) && !defined(OS_IOS)
 112   scoped_ptr<DeviceMonitorMac> device_monitor_mac_;
 113 #endif
 114
 115   // Destroy parts_ before main_message_loop_ (required) and before other
 116   // classes constructed in content (but after main_thread_).
 117   scoped_ptr<BrowserMainParts> parts_;
 118
 119   // Members initialized in |InitializeMainThread()| ---------------------------
 120   // This must get destroyed before other threads that are created in parts_.
 121   scoped_ptr<BrowserThreadImpl> main_thread_;
 122
 123   // Members initialized in |BrowserThreadsStarted()| --------------------------
 124   scoped_ptr<ResourceDispatcherHostImpl> resource_dispatcher_host_;
 125   scoped_ptr<SpeechRecognitionManagerImpl> speech_recognition_manager_;
 126
 127   // Members initialized in |RunMainMessageLoopParts()| ------------------------
 128   scoped_ptr<BrowserProcessSubThread> db_thread_;
 129 #if !defined(OS_IOS)
 130   scoped_ptr<WebKitThread> webkit_thread_;
 131 #endif
 132   scoped_ptr<BrowserProcessSubThread> file_user_blocking_thread_;
 133   scoped_ptr<BrowserProcessSubThread> file_thread_;
 134   scoped_ptr<BrowserProcessSubThread> process_launcher_thread_;
 135   scoped_ptr<BrowserProcessSubThread> cache_thread_;
 136   scoped_ptr<BrowserProcessSubThread> io_thread_;
 137   scoped_ptr<MemoryObserver> memory_observer_;
 138
 139   DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
 140 };
 141
 142 }  // namespace content
 143
 144 #endif  // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_