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/ref_counted.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "content/browser/browser_process_sub_thread.h" 12 #include "content/public/browser/browser_main_runner.h" 13 14 class CommandLine; 15 16 namespace base { 17 class HighResolutionTimerManager; 18 class MessageLoop; 19 class PowerMonitor; 20 class SystemMonitor; 21 namespace debug { 22 class TraceMemoryController; 23 } // namespace debug 24 } // namespace base 25 26 namespace media { 27 class AudioManager; 28 class MIDIManager; 29 } // namespace media 30 31 namespace net { 32 class NetworkChangeNotifier; 33 } // namespace net 34 35 namespace content { 36 class AudioMirroringManager; 37 class BrowserMainParts; 38 class BrowserOnlineStateObserver; 39 class BrowserShutdownImpl; 40 class BrowserThreadImpl; 41 class MediaStreamManager; 42 class ResourceDispatcherHostImpl; 43 class SpeechRecognitionManagerImpl; 44 class SystemMessageWindowWin; 45 struct MainFunctionParams; 46 47 #if defined(OS_LINUX) 48 class DeviceMonitorLinux; 49 #elif defined(OS_MACOSX) 50 class DeviceMonitorMac; 51 #endif 52 53 // Implements the main browser loop stages called from BrowserMainRunner. 54 // See comments in browser_main_parts.h for additional info. 55 class CONTENT_EXPORT BrowserMainLoop { 56 public: 57 // Returns the current instance. This is used to get access to the getters 58 // that return objects which are owned by this class. 59 static BrowserMainLoop* GetInstance(); 60 61 explicit BrowserMainLoop(const MainFunctionParams& parameters); 62 virtual ~BrowserMainLoop(); 63 64 void Init(); 65 66 void EarlyInitialization(); 67 void InitializeToolkit(); 68 void MainMessageLoopStart(); 69 70 // Create the tasks we need to complete startup. 71 void CreateStartupTasks(); 72 73 // Perform the default message loop run logic. 74 void RunMainMessageLoopParts(); 75 76 // Performs the shutdown sequence, starting with PostMainMessageLoopRun 77 // through stopping threads to PostDestroyThreads. 78 void ShutdownThreadsAndCleanUp(); 79 80 int GetResultCode() const { return result_code_; } 81 82 media::AudioManager* audio_manager() const { return audio_manager_.get(); } 83 AudioMirroringManager* audio_mirroring_manager() const { 84 return audio_mirroring_manager_.get(); 85 } 86 MediaStreamManager* media_stream_manager() const { 87 return media_stream_manager_.get(); 88 } 89 media::MIDIManager* midi_manager() const { return midi_manager_.get(); } 90 base::Thread* indexed_db_thread() const { return indexed_db_thread_.get(); } 91 92 private: 93 class MemoryObserver; 94 // For ShutdownThreadsAndCleanUp. 95 friend class BrowserShutdownImpl; 96 97 void InitializeMainThread(); 98 99 // Called just before creating the threads 100 int PreCreateThreads(); 101 102 // Create all secondary threads. 103 int CreateThreads(); 104 105 // Called right after the browser threads have been started. 106 int BrowserThreadsStarted(); 107 108 int PreMainMessageLoopRun(); 109 110 void MainMessageLoopRun(); 111 112 // Members initialized on construction --------------------------------------- 113 const MainFunctionParams& parameters_; 114 const CommandLine& parsed_command_line_; 115 int result_code_; 116 // True if the non-UI threads were created. 117 bool created_threads_; 118 119 // Members initialized in |MainMessageLoopStart()| --------------------------- 120 scoped_ptr<base::MessageLoop> main_message_loop_; 121 scoped_ptr<base::SystemMonitor> system_monitor_; 122 scoped_ptr<base::PowerMonitor> power_monitor_; 123 scoped_ptr<base::HighResolutionTimerManager> hi_res_timer_manager_; 124 scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_; 125 scoped_ptr<media::AudioManager> audio_manager_; 126 scoped_ptr<media::MIDIManager> midi_manager_; 127 scoped_ptr<AudioMirroringManager> audio_mirroring_manager_; 128 scoped_ptr<MediaStreamManager> media_stream_manager_; 129 // Per-process listener for online state changes. 130 scoped_ptr<BrowserOnlineStateObserver> online_state_observer_; 131 #if defined(OS_WIN) 132 scoped_ptr<SystemMessageWindowWin> system_message_window_; 133 #elif defined(OS_LINUX) 134 scoped_ptr<DeviceMonitorLinux> device_monitor_linux_; 135 #elif defined(OS_MACOSX) && !defined(OS_IOS) 136 scoped_ptr<DeviceMonitorMac> device_monitor_mac_; 137 #endif 138 139 // Destroy parts_ before main_message_loop_ (required) and before other 140 // classes constructed in content (but after main_thread_). 141 scoped_ptr<BrowserMainParts> parts_; 142 143 // Members initialized in |InitializeMainThread()| --------------------------- 144 // This must get destroyed before other threads that are created in parts_. 145 scoped_ptr<BrowserThreadImpl> main_thread_; 146 147 // Members initialized in |BrowserThreadsStarted()| -------------------------- 148 scoped_ptr<ResourceDispatcherHostImpl> resource_dispatcher_host_; 149 scoped_ptr<SpeechRecognitionManagerImpl> speech_recognition_manager_; 150 151 // Members initialized in |RunMainMessageLoopParts()| ------------------------ 152 scoped_ptr<BrowserProcessSubThread> db_thread_; 153 scoped_ptr<BrowserProcessSubThread> file_user_blocking_thread_; 154 scoped_ptr<BrowserProcessSubThread> file_thread_; 155 scoped_ptr<BrowserProcessSubThread> process_launcher_thread_; 156 scoped_ptr<BrowserProcessSubThread> cache_thread_; 157 scoped_ptr<BrowserProcessSubThread> io_thread_; 158 scoped_ptr<base::Thread> indexed_db_thread_; 159 scoped_ptr<MemoryObserver> memory_observer_; 160 scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_; 161 162 DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop); 163 }; 164 165 } // namespace content 166 167 #endif // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_ 168
