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