content/browser/renderer_host/render_process_host_impl.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_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_
   7
   8 #include <map>
   9 #include <queue>
  10 #include <string>
  11
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/observer_list.h"
  14 #include "base/process/process.h"
  15 #include "content/browser/child_process_launcher.h"
  16 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
  17 #include "content/browser/power_monitor_message_broadcaster.h"
  18 #include "content/common/content_export.h"
  19 #include "content/common/mojo/service_registry_impl.h"
  20 #include "content/public/browser/render_process_host.h"
  21 #include "ipc/ipc_channel_proxy.h"
  22 #include "ipc/ipc_platform_file.h"
  23 #include "third_party/mojo/src/mojo/public/cpp/bindings/interface_ptr.h"
  24 #include "ui/gfx/gpu_memory_buffer.h"
  25 #include "ui/gl/gpu_switching_observer.h"
  26
  27 #if defined(OS_MACOSX) && !defined(OS_IOS)
  28 #include "content/common/mac/io_surface_manager_token.h"
  29 #endif
  30
  31 namespace base {
  32 class CommandLine;
  33 class MessageLoop;
  34 }
  35
  36 namespace gfx {
  37 class Size;
  38 }
  39
  40 namespace gpu {
  41 class ValueStateMap;
  42 }
  43
  44 namespace IPC {
  45 class ChannelMojoHost;
  46 }
  47
  48 namespace content {
  49 class AudioInputRendererHost;
  50 class AudioRendererHost;
  51 class BluetoothDispatcherHost;
  52 class BrowserCdmManager;
  53 class BrowserDemuxerAndroid;
  54 class GpuMessageFilter;
  55 class InProcessChildThreadParams;
  56 class MessagePortMessageFilter;
  57 class MojoApplicationHost;
  58 class NotificationMessageFilter;
  59 #if defined(ENABLE_WEBRTC)
  60 class P2PSocketDispatcherHost;
  61 #endif
  62 class PermissionServiceContext;
  63 class PeerConnectionTrackerHost;
  64 class RendererMainThread;
  65 class RenderWidgetHelper;
  66 class RenderWidgetHost;
  67 class RenderWidgetHostImpl;
  68 class RenderWidgetHostViewFrameSubscriber;
  69 class StoragePartition;
  70 class StoragePartitionImpl;
  71
  72 typedef base::Thread* (*RendererMainThreadFactoryFunction)(
  73     const InProcessChildThreadParams& params);
  74
  75 // Implements a concrete RenderProcessHost for the browser process for talking
  76 // to actual renderer processes (as opposed to mocks).
  77 //
  78 // Represents the browser side of the browser <--> renderer communication
  79 // channel. There will be one RenderProcessHost per renderer process.
  80 //
  81 // This object is refcounted so that it can release its resources when all
  82 // hosts using it go away.
  83 //
  84 // This object communicates back and forth with the RenderProcess object
  85 // running in the renderer process. Each RenderProcessHost and RenderProcess
  86 // keeps a list of RenderView (renderer) and WebContentsImpl (browser) which
  87 // are correlated with IDs. This way, the Views and the corresponding ViewHosts
  88 // communicate through the two process objects.
  89 //
  90 // A RenderProcessHost is also associated with one and only one
  91 // StoragePartition.  This allows us to implement strong storage isolation
  92 // because all the IPCs from the RenderViews (renderer) will only ever be able
  93 // to access the partition they are assigned to.
  94 class CONTENT_EXPORT RenderProcessHostImpl
  95     : public RenderProcessHost,
  96       public ChildProcessLauncher::Client,
  97       public ui::GpuSwitchingObserver {
  98  public:
  99   RenderProcessHostImpl(BrowserContext* browser_context,
 100                         StoragePartitionImpl* storage_partition_impl,
 101                         bool is_for_guests_only);
 102   ~RenderProcessHostImpl() override;
 103
 104   // RenderProcessHost implementation (public portion).
 105   void EnableSendQueue() override;
 106   bool Init() override;
 107   int GetNextRoutingID() override;
 108   void AddRoute(int32 routing_id, IPC::Listener* listener) override;
 109   void RemoveRoute(int32 routing_id) override;
 110   void AddObserver(RenderProcessHostObserver* observer) override;
 111   void RemoveObserver(RenderProcessHostObserver* observer) override;
 112   void ShutdownForBadMessage() override;
 113   void WidgetRestored() override;
 114   void WidgetHidden() override;
 115   int VisibleWidgetCount() const override;
 116   bool IsForGuestsOnly() const override;
 117   StoragePartition* GetStoragePartition() const override;
 118   bool Shutdown(int exit_code, bool wait) override;
 119   bool FastShutdownIfPossible() override;
 120   base::ProcessHandle GetHandle() const override;
 121   BrowserContext* GetBrowserContext() const override;
 122   bool InSameStoragePartition(StoragePartition* partition) const override;
 123   int GetID() const override;
 124   bool HasConnection() const override;
 125   void SetIgnoreInputEvents(bool ignore_input_events) override;
 126   bool IgnoreInputEvents() const override;
 127   void Cleanup() override;
 128   void AddPendingView() override;
 129   void RemovePendingView() override;
 130   void SetSuddenTerminationAllowed(bool enabled) override;
 131   bool SuddenTerminationAllowed() const override;
 132   IPC::ChannelProxy* GetChannel() override;
 133   void AddFilter(BrowserMessageFilter* filter) override;
 134   bool FastShutdownForPageCount(size_t count) override;
 135   bool FastShutdownStarted() const override;
 136   base::TimeDelta GetChildProcessIdleTime() const override;
 137   void ResumeRequestsForView(int route_id) override;
 138   void FilterURL(bool empty_allowed, GURL* url) override;
 139 #if defined(ENABLE_WEBRTC)
 140   void EnableAudioDebugRecordings(const base::FilePath& file) override;
 141   void DisableAudioDebugRecordings() override;
 142   void SetWebRtcLogMessageCallback(
 143       base::Callback<void(const std::string&)> callback) override;
 144   WebRtcStopRtpDumpCallback StartRtpDump(
 145       bool incoming,
 146       bool outgoing,
 147       const WebRtcRtpPacketCallback& packet_callback) override;
 148 #endif
 149   void ResumeDeferredNavigation(const GlobalRequestID& request_id) override;
 150   void NotifyTimezoneChange(const std::string& timezone) override;
 151   ServiceRegistry* GetServiceRegistry() override;
 152   const base::TimeTicks& GetInitTimeForNavigationMetrics() const override;
 153   bool SubscribeUniformEnabled() const override;
 154   void OnAddSubscription(unsigned int target) override;
 155   void OnRemoveSubscription(unsigned int target) override;
 156   void SendUpdateValueState(
 157       unsigned int target, const gpu::ValueState& state) override;
 158 #if defined(ENABLE_BROWSER_CDMS)
 159   media::BrowserCdm* GetBrowserCdm(int render_frame_id,
 160                                    int cdm_id) const override;
 161 #endif
 162
 163   // IPC::Sender via RenderProcessHost.
 164   bool Send(IPC::Message* msg) override;
 165
 166   // IPC::Listener via RenderProcessHost.
 167   bool OnMessageReceived(const IPC::Message& msg) override;
 168   void OnChannelConnected(int32 peer_pid) override;
 169   void OnChannelError() override;
 170   void OnBadMessageReceived(const IPC::Message& message) override;
 171
 172   // ChildProcessLauncher::Client implementation.
 173   void OnProcessLaunched() override;
 174   void OnProcessLaunchFailed() override;
 175
 176   scoped_refptr<AudioRendererHost> audio_renderer_host() const;
 177
 178   // Call this function when it is evident that the child process is actively
 179   // performing some operation, for example if we just received an IPC message.
 180   void mark_child_process_activity_time() {
 181     child_process_activity_time_ = base::TimeTicks::Now();
 182   }
 183
 184   // Start and end frame subscription for a specific renderer.
 185   // This API only supports subscription to accelerated composited frames.
 186   void BeginFrameSubscription(
 187       int route_id,
 188       scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber);
 189   void EndFrameSubscription(int route_id);
 190
 191 #if defined(ENABLE_WEBRTC)
 192   // Fires the webrtc log message callback with |message|, if callback is set.
 193   void WebRtcLogMessage(const std::string& message);
 194 #endif
 195
 196   // Used to extend the lifetime of the sessions until the render view
 197   // in the renderer is fully closed. This is static because its also called
 198   // with mock hosts as input in test cases.
 199   static void ReleaseOnCloseACK(
 200       RenderProcessHost* host,
 201       const SessionStorageNamespaceMap& sessions,
 202       int view_route_id);
 203
 204   // Register/unregister the host identified by the host id in the global host
 205   // list.
 206   static void RegisterHost(int host_id, RenderProcessHost* host);
 207   static void UnregisterHost(int host_id);
 208
 209   // Implementation of FilterURL below that can be shared with the mock class.
 210   static void FilterURL(RenderProcessHost* rph, bool empty_allowed, GURL* url);
 211
 212   // Returns true if |host| is suitable for launching a new view with |site_url|
 213   // in the given |browser_context|.
 214   static bool IsSuitableHost(RenderProcessHost* host,
 215                              BrowserContext* browser_context,
 216                              const GURL& site_url);
 217
 218   // Returns an existing RenderProcessHost for |url| in |browser_context|,
 219   // if one exists.  Otherwise a new RenderProcessHost should be created and
 220   // registered using RegisterProcessHostForSite().
 221   // This should only be used for process-per-site mode, which can be enabled
 222   // globally with a command line flag or per-site, as determined by
 223   // SiteInstanceImpl::ShouldUseProcessPerSite.
 224   static RenderProcessHost* GetProcessHostForSite(
 225       BrowserContext* browser_context,
 226       const GURL& url);
 227
 228   // Registers the given |process| to be used for any instance of |url|
 229   // within |browser_context|.
 230   // This should only be used for process-per-site mode, which can be enabled
 231   // globally with a command line flag or per-site, as determined by
 232   // SiteInstanceImpl::ShouldUseProcessPerSite.
 233   static void RegisterProcessHostForSite(
 234       BrowserContext* browser_context,
 235       RenderProcessHost* process,
 236       const GURL& url);
 237
 238   static base::MessageLoop* GetInProcessRendererThreadForTesting();
 239
 240   // This forces a renderer that is running "in process" to shut down.
 241   static void ShutDownInProcessRenderer();
 242
 243   static void RegisterRendererMainThreadFactory(
 244       RendererMainThreadFactoryFunction create);
 245
 246 #if defined(OS_ANDROID)
 247   const scoped_refptr<BrowserDemuxerAndroid>& browser_demuxer_android() {
 248     return browser_demuxer_android_;
 249   }
 250 #endif
 251
 252   MessagePortMessageFilter* message_port_message_filter() const {
 253     return message_port_message_filter_.get();
 254   }
 255
 256   NotificationMessageFilter* notification_message_filter() const {
 257     return notification_message_filter_.get();
 258   }
 259
 260   void set_is_for_guests_only_for_testing(bool is_for_guests_only) {
 261     is_for_guests_only_ = is_for_guests_only;
 262   }
 263
 264   // Called when the existence of the other renderer process which is connected
 265   // to the Worker in this renderer process has changed.
 266   // It is only called when "enable-embedded-shared-worker" flag is set.
 267   void IncrementWorkerRefCount();
 268   void DecrementWorkerRefCount();
 269
 270   void GetAudioOutputControllers(
 271       const GetAudioOutputControllersCallback& callback) const override;
 272
 273   BluetoothDispatcherHost* GetBluetoothDispatcherHost();
 274
 275  protected:
 276   // A proxy for our IPC::Channel that lives on the IO thread (see
 277   // browser_process.h)
 278   scoped_ptr<IPC::ChannelProxy> channel_;
 279
 280   // True if fast shutdown has been performed on this RPH.
 281   bool fast_shutdown_started_;
 282
 283   // True if we've posted a DeleteTask and will be deleted soon.
 284   bool deleting_soon_;
 285
 286 #ifndef NDEBUG
 287   // True if this object has deleted itself.
 288   bool is_self_deleted_;
 289 #endif
 290
 291   // The count of currently swapped out but pending RenderViews.  We have
 292   // started to swap these in, so the renderer process should not exit if
 293   // this count is non-zero.
 294   int32 pending_views_;
 295
 296  private:
 297   friend class VisitRelayingRenderProcessHost;
 298   friend class ChildProcessLauncherBrowserTest_ChildSpawnFail_Test;
 299
 300   scoped_ptr<IPC::ChannelProxy> CreateChannelProxy(
 301       const std::string& channel_id);
 302
 303   // Creates and adds the IO thread message filters.
 304   void CreateMessageFilters();
 305
 306   // Registers Mojo services to be exposed to the renderer.
 307   void RegisterMojoServices();
 308
 309   // Control message handlers.
 310   void OnShutdownRequest();
 311   void SuddenTerminationChanged(bool enabled);
 312   void OnUserMetricsRecordAction(const std::string& action);
 313   void OnSavedPageAsMHTML(int job_id, int64 mhtml_file_size);
 314   void OnCloseACK(int old_route_id);
 315
 316   // Generates a command line to be used to spawn a renderer and appends the
 317   // results to |*command_line|.
 318   void AppendRendererCommandLine(base::CommandLine* command_line) const;
 319
 320   // Copies applicable command line switches from the given |browser_cmd| line
 321   // flags to the output |renderer_cmd| line flags. Not all switches will be
 322   // copied over.
 323   void PropagateBrowserCommandLineToRenderer(
 324       const base::CommandLine& browser_cmd,
 325       base::CommandLine* renderer_cmd) const;
 326
 327   // Callers can reduce the RenderProcess' priority.
 328   void SetBackgrounded(bool backgrounded);
 329
 330   // Handle termination of our process.
 331   void ProcessDied(bool already_dead, RendererClosedDetails* known_details);
 332
 333   // GpuSwitchingObserver implementation.
 334   void OnGpuSwitched() override;
 335
 336 #if defined(ENABLE_WEBRTC)
 337   void OnRegisterAecDumpConsumer(int id);
 338   void OnUnregisterAecDumpConsumer(int id);
 339   void RegisterAecDumpConsumerOnUIThread(int id);
 340   void UnregisterAecDumpConsumerOnUIThread(int id);
 341   void EnableAecDumpForId(const base::FilePath& file, int id);
 342   // Sends |file_for_transit| to the render process.
 343   void SendAecDumpFileToRenderer(int id,
 344                                  IPC::PlatformFileForTransit file_for_transit);
 345   void SendDisableAecDumpToRenderer();
 346   base::FilePath GetAecDumpFilePathWithExtensions(const base::FilePath& file);
 347 #endif
 348
 349   scoped_ptr<MojoApplicationHost> mojo_application_host_;
 350
 351   // The registered IPC listener objects. When this list is empty, we should
 352   // delete ourselves.
 353   IDMap<IPC::Listener> listeners_;
 354
 355   // The count of currently visible widgets.  Since the host can be a container
 356   // for multiple widgets, it uses this count to determine when it should be
 357   // backgrounded.
 358   int32 visible_widgets_;
 359
 360   // Does this process have backgrounded priority.
 361   bool backgrounded_;
 362
 363   // Used to allow a RenderWidgetHost to intercept various messages on the
 364   // IO thread.
 365   scoped_refptr<RenderWidgetHelper> widget_helper_;
 366
 367   // The filter for GPU-related messages coming from the renderer.
 368   // Thread safety note: this field is to be accessed from the UI thread.
 369   // We don't keep a reference to it, to avoid it being destroyed on the UI
 370   // thread, but we clear this field when we clear channel_. When channel_ goes
 371   // away, it posts a task to the IO thread to destroy it there, so we know that
 372   // it's valid if non-NULL.
 373   GpuMessageFilter* gpu_message_filter_;
 374
 375   // The filter for MessagePort messages coming from the renderer.
 376   scoped_refptr<MessagePortMessageFilter> message_port_message_filter_;
 377
 378   // The filter for Web Notification messages coming from the renderer. Holds a
 379   // closure per notification that must be freed when the notification closes.
 380   scoped_refptr<NotificationMessageFilter> notification_message_filter_;
 381
 382   // Used in single-process mode.
 383   scoped_ptr<base::Thread> in_process_renderer_;
 384
 385   // True after Init() has been called. We can't just check channel_ because we
 386   // also reset that in the case of process termination.
 387   bool is_initialized_;
 388
 389   // PlzNavigate
 390   // Stores the time at which the first call to Init happened.
 391   base::TimeTicks init_time_;
 392
 393   // Used to launch and terminate the process without blocking the UI thread.
 394   scoped_ptr<ChildProcessLauncher> child_process_launcher_;
 395
 396   // Messages we queue while waiting for the process handle.  We queue them here
 397   // instead of in the channel so that we ensure they're sent after init related
 398   // messages that are sent once the process handle is available.  This is
 399   // because the queued messages may have dependencies on the init messages.
 400   std::queue<IPC::Message*> queued_messages_;
 401
 402   // The globally-unique identifier for this RPH.
 403   int id_;
 404
 405   BrowserContext* browser_context_;
 406
 407   // Owned by |browser_context_|.
 408   StoragePartitionImpl* storage_partition_impl_;
 409
 410   // The observers watching our lifetime.
 411   base::ObserverList<RenderProcessHostObserver> observers_;
 412
 413   // True if the process can be shut down suddenly.  If this is true, then we're
 414   // sure that all the RenderViews in the process can be shutdown suddenly.  If
 415   // it's false, then specific RenderViews might still be allowed to be shutdown
 416   // suddenly by checking their SuddenTerminationAllowed() flag.  This can occur
 417   // if one WebContents has an unload event listener but another WebContents in
 418   // the same process doesn't.
 419   bool sudden_termination_allowed_;
 420
 421   // Set to true if we shouldn't send input events.  We actually do the
 422   // filtering for this at the render widget level.
 423   bool ignore_input_events_;
 424
 425   // Records the last time we regarded the child process active.
 426   base::TimeTicks child_process_activity_time_;
 427
 428   // Indicates whether this RenderProcessHost is exclusively hosting guest
 429   // RenderFrames.
 430   bool is_for_guests_only_;
 431
 432   // Forwards messages between WebRTCInternals in the browser process
 433   // and PeerConnectionTracker in the renderer process.
 434   scoped_refptr<PeerConnectionTrackerHost> peer_connection_tracker_host_;
 435
 436   // Prevents the class from being added as a GpuDataManagerImpl observer more
 437   // than once.
 438   bool gpu_observer_registered_;
 439
 440   // Set if a call to Cleanup is required once the RenderProcessHostImpl is no
 441   // longer within the RenderProcessHostObserver::RenderProcessExited callbacks.
 442   bool delayed_cleanup_needed_;
 443
 444   // Indicates whether RenderProcessHostImpl is currently iterating and calling
 445   // through RenderProcessHostObserver::RenderProcessExited.
 446   bool within_process_died_observer_;
 447
 448   // Forwards power state messages to the renderer process.
 449   PowerMonitorMessageBroadcaster power_monitor_broadcaster_;
 450
 451   scoped_refptr<AudioRendererHost> audio_renderer_host_;
 452
 453   scoped_refptr<AudioInputRendererHost> audio_input_renderer_host_;
 454
 455   scoped_refptr<BluetoothDispatcherHost> bluetooth_dispatcher_host_;
 456
 457 #if defined(OS_ANDROID)
 458   scoped_refptr<BrowserDemuxerAndroid> browser_demuxer_android_;
 459 #endif
 460
 461 #if defined(ENABLE_WEBRTC)
 462   base::Callback<void(const std::string&)> webrtc_log_message_callback_;
 463
 464   scoped_refptr<P2PSocketDispatcherHost> p2p_socket_dispatcher_host_;
 465
 466   // Must be accessed on UI thread.
 467   std::vector<int> aec_dump_consumers_;
 468
 469   WebRtcStopRtpDumpCallback stop_rtp_dump_callback_;
 470 #endif
 471
 472   int worker_ref_count_;
 473
 474   // Records the time when the process starts surviving for workers for UMA.
 475   base::TimeTicks survive_for_worker_start_time_;
 476
 477   // Records the maximum # of workers simultaneously hosted in this process
 478   // for UMA.
 479   int max_worker_count_;
 480
 481   // Context shared for each PermissionService instance created for this RPH.
 482   scoped_ptr<PermissionServiceContext> permission_service_context_;
 483
 484   // This is a set of all subscription targets valuebuffers in the GPU process
 485   // are currently subscribed too. Used to prevent sending unnecessary
 486   // ValueState updates.
 487   typedef base::hash_set<unsigned int> SubscriptionSet;
 488   SubscriptionSet subscription_set_;
 489
 490   // Maintains ValueStates which are not currently subscribed too so we can
 491   // pass them to the GpuService if a Valuebuffer ever subscribes to the
 492   // respective subscription target
 493   scoped_refptr<gpu::ValueStateMap> pending_valuebuffer_state_;
 494
 495   // Whether or not the CHROMIUM_subscribe_uniform WebGL extension is enabled
 496   bool subscribe_uniform_enabled_;
 497
 498 #if defined(OS_MACOSX) && !defined(OS_IOS)
 499   // Unique unguessable token that the child process is using to acquire
 500   // IOSurface references.
 501   IOSurfaceManagerToken io_surface_manager_token_;
 502 #endif
 503
 504   base::WeakPtrFactory<RenderProcessHostImpl> weak_factory_;
 505
 506   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 507 };
 508
 509 }  // namespace content
 510
 511 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_