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 AudioRendererHost;
  50 class BluetoothDispatcherHost;
  51 class BrowserCdmManager;
  52 class BrowserDemuxerAndroid;
  53 class GpuMessageFilter;
  54 class InProcessChildThreadParams;
  55 class MessagePortMessageFilter;
  56 class MojoApplicationHost;
  57 class NotificationMessageFilter;
  58 #if defined(ENABLE_WEBRTC)
  59 class P2PSocketDispatcherHost;
  60 #endif
  61 class PermissionServiceContext;
  62 class PeerConnectionTrackerHost;
  63 class RendererMainThread;
  64 class RenderWidgetHelper;
  65 class RenderWidgetHost;
  66 class RenderWidgetHostImpl;
  67 class RenderWidgetHostViewFrameSubscriber;
  68 class StoragePartition;
  69 class StoragePartitionImpl;
  70
  71 typedef base::Thread* (*RendererMainThreadFactoryFunction)(
  72     const InProcessChildThreadParams& params);
  73
  74 // Implements a concrete RenderProcessHost for the browser process for talking
  75 // to actual renderer processes (as opposed to mocks).
  76 //
  77 // Represents the browser side of the browser <--> renderer communication
  78 // channel. There will be one RenderProcessHost per renderer process.
  79 //
  80 // This object is refcounted so that it can release its resources when all
  81 // hosts using it go away.
  82 //
  83 // This object communicates back and forth with the RenderProcess object
  84 // running in the renderer process. Each RenderProcessHost and RenderProcess
  85 // keeps a list of RenderView (renderer) and WebContentsImpl (browser) which
  86 // are correlated with IDs. This way, the Views and the corresponding ViewHosts
  87 // communicate through the two process objects.
  88 //
  89 // A RenderProcessHost is also associated with one and only one
  90 // StoragePartition.  This allows us to implement strong storage isolation
  91 // because all the IPCs from the RenderViews (renderer) will only ever be able
  92 // to access the partition they are assigned to.
  93 class CONTENT_EXPORT RenderProcessHostImpl
  94     : public RenderProcessHost,
  95       public ChildProcessLauncher::Client,
  96       public ui::GpuSwitchingObserver {
  97  public:
  98   RenderProcessHostImpl(BrowserContext* browser_context,
  99                         StoragePartitionImpl* storage_partition_impl,
 100                         bool is_for_guests_only);
 101   ~RenderProcessHostImpl() override;
 102
 103   // RenderProcessHost implementation (public portion).
 104   void EnableSendQueue() override;
 105   bool Init() override;
 106   int GetNextRoutingID() override;
 107   void AddRoute(int32 routing_id, IPC::Listener* listener) override;
 108   void RemoveRoute(int32 routing_id) override;
 109   void AddObserver(RenderProcessHostObserver* observer) override;
 110   void RemoveObserver(RenderProcessHostObserver* observer) override;
 111   void ShutdownForBadMessage() override;
 112   void WidgetRestored() override;
 113   void WidgetHidden() override;
 114   int VisibleWidgetCount() const override;
 115   bool IsForGuestsOnly() const override;
 116   StoragePartition* GetStoragePartition() const override;
 117   bool Shutdown(int exit_code, bool wait) override;
 118   bool FastShutdownIfPossible() override;
 119   base::ProcessHandle GetHandle() const override;
 120   BrowserContext* GetBrowserContext() const override;
 121   bool InSameStoragePartition(StoragePartition* partition) const override;
 122   int GetID() const override;
 123   bool HasConnection() const override;
 124   void SetIgnoreInputEvents(bool ignore_input_events) override;
 125   bool IgnoreInputEvents() const override;
 126   void Cleanup() override;
 127   void AddPendingView() override;
 128   void RemovePendingView() override;
 129   void SetSuddenTerminationAllowed(bool enabled) override;
 130   bool SuddenTerminationAllowed() const override;
 131   IPC::ChannelProxy* GetChannel() override;
 132   void AddFilter(BrowserMessageFilter* filter) override;
 133   bool FastShutdownForPageCount(size_t count) override;
 134   bool FastShutdownStarted() const override;
 135   base::TimeDelta GetChildProcessIdleTime() const override;
 136   void ResumeRequestsForView(int route_id) override;
 137   void FilterURL(bool empty_allowed, GURL* url) override;
 138 #if defined(ENABLE_WEBRTC)
 139   void EnableAecDump(const base::FilePath& file) override;
 140   void DisableAecDump() override;
 141   void SetWebRtcLogMessageCallback(
 142       base::Callback<void(const std::string&)> callback) override;
 143   WebRtcStopRtpDumpCallback StartRtpDump(
 144       bool incoming,
 145       bool outgoing,
 146       const WebRtcRtpPacketCallback& packet_callback) override;
 147 #endif
 148   void ResumeDeferredNavigation(const GlobalRequestID& request_id) override;
 149   void NotifyTimezoneChange(const std::string& timezone) override;
 150   ServiceRegistry* GetServiceRegistry() override;
 151   const base::TimeTicks& GetInitTimeForNavigationMetrics() const override;
 152   bool SubscribeUniformEnabled() const override;
 153   void OnAddSubscription(unsigned int target) override;
 154   void OnRemoveSubscription(unsigned int target) override;
 155   void SendUpdateValueState(
 156       unsigned int target, const gpu::ValueState& state) override;
 157 #if defined(ENABLE_BROWSER_CDMS)
 158   media::BrowserCdm* GetBrowserCdm(int render_frame_id,
 159                                    int cdm_id) const override;
 160 #endif
 161
 162   // IPC::Sender via RenderProcessHost.
 163   bool Send(IPC::Message* msg) override;
 164
 165   // IPC::Listener via RenderProcessHost.
 166   bool OnMessageReceived(const IPC::Message& msg) override;
 167   void OnChannelConnected(int32 peer_pid) override;
 168   void OnChannelError() override;
 169   void OnBadMessageReceived(const IPC::Message& message) override;
 170
 171   // ChildProcessLauncher::Client implementation.
 172   void OnProcessLaunched() override;
 173   void OnProcessLaunchFailed() override;
 174
 175   scoped_refptr<AudioRendererHost> audio_renderer_host() const;
 176
 177   // Call this function when it is evident that the child process is actively
 178   // performing some operation, for example if we just received an IPC message.
 179   void mark_child_process_activity_time() {
 180     child_process_activity_time_ = base::TimeTicks::Now();
 181   }
 182
 183   // Start and end frame subscription for a specific renderer.
 184   // This API only supports subscription to accelerated composited frames.
 185   void BeginFrameSubscription(
 186       int route_id,
 187       scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber);
 188   void EndFrameSubscription(int route_id);
 189
 190 #if defined(ENABLE_WEBRTC)
 191   // Fires the webrtc log message callback with |message|, if callback is set.
 192   void WebRtcLogMessage(const std::string& message);
 193 #endif
 194
 195   // Used to extend the lifetime of the sessions until the render view
 196   // in the renderer is fully closed. This is static because its also called
 197   // with mock hosts as input in test cases.
 198   static void ReleaseOnCloseACK(
 199       RenderProcessHost* host,
 200       const SessionStorageNamespaceMap& sessions,
 201       int view_route_id);
 202
 203   // Register/unregister the host identified by the host id in the global host
 204   // list.
 205   static void RegisterHost(int host_id, RenderProcessHost* host);
 206   static void UnregisterHost(int host_id);
 207
 208   // Implementation of FilterURL below that can be shared with the mock class.
 209   static void FilterURL(RenderProcessHost* rph, bool empty_allowed, GURL* url);
 210
 211   // Returns true if |host| is suitable for launching a new view with |site_url|
 212   // in the given |browser_context|.
 213   static bool IsSuitableHost(RenderProcessHost* host,
 214                              BrowserContext* browser_context,
 215                              const GURL& site_url);
 216
 217   // Returns an existing RenderProcessHost for |url| in |browser_context|,
 218   // if one exists.  Otherwise a new RenderProcessHost should be created and
 219   // registered using RegisterProcessHostForSite().
 220   // This should only be used for process-per-site mode, which can be enabled
 221   // globally with a command line flag or per-site, as determined by
 222   // SiteInstanceImpl::ShouldUseProcessPerSite.
 223   static RenderProcessHost* GetProcessHostForSite(
 224       BrowserContext* browser_context,
 225       const GURL& url);
 226
 227   // Registers the given |process| to be used for any instance of |url|
 228   // within |browser_context|.
 229   // This should only be used for process-per-site mode, which can be enabled
 230   // globally with a command line flag or per-site, as determined by
 231   // SiteInstanceImpl::ShouldUseProcessPerSite.
 232   static void RegisterProcessHostForSite(
 233       BrowserContext* browser_context,
 234       RenderProcessHost* process,
 235       const GURL& url);
 236
 237   static base::MessageLoop* GetInProcessRendererThreadForTesting();
 238
 239   // This forces a renderer that is running "in process" to shut down.
 240   static void ShutDownInProcessRenderer();
 241
 242   static void RegisterRendererMainThreadFactory(
 243       RendererMainThreadFactoryFunction create);
 244
 245 #if defined(OS_ANDROID)
 246   const scoped_refptr<BrowserDemuxerAndroid>& browser_demuxer_android() {
 247     return browser_demuxer_android_;
 248   }
 249 #endif
 250
 251 #if defined(ENABLE_BROWSER_CDMS)
 252   const scoped_refptr<BrowserCdmManager>& browser_cdm_manager() {
 253     return browser_cdm_manager_;
 254   }
 255 #endif
 256
 257   MessagePortMessageFilter* message_port_message_filter() const {
 258     return message_port_message_filter_.get();
 259   }
 260
 261   NotificationMessageFilter* notification_message_filter() const {
 262     return notification_message_filter_.get();
 263   }
 264
 265   void set_is_for_guests_only_for_testing(bool is_for_guests_only) {
 266     is_for_guests_only_ = is_for_guests_only;
 267   }
 268
 269   // Called when the existence of the other renderer process which is connected
 270   // to the Worker in this renderer process has changed.
 271   // It is only called when "enable-embedded-shared-worker" flag is set.
 272   void IncrementWorkerRefCount();
 273   void DecrementWorkerRefCount();
 274
 275   void GetAudioOutputControllers(
 276       const GetAudioOutputControllersCallback& callback) const override;
 277
 278   BluetoothDispatcherHost* GetBluetoothDispatcherHost();
 279
 280  protected:
 281   // A proxy for our IPC::Channel that lives on the IO thread (see
 282   // browser_process.h)
 283   scoped_ptr<IPC::ChannelProxy> channel_;
 284
 285   // True if fast shutdown has been performed on this RPH.
 286   bool fast_shutdown_started_;
 287
 288   // True if we've posted a DeleteTask and will be deleted soon.
 289   bool deleting_soon_;
 290
 291 #ifndef NDEBUG
 292   // True if this object has deleted itself.
 293   bool is_self_deleted_;
 294 #endif
 295
 296   // The count of currently swapped out but pending RenderViews.  We have
 297   // started to swap these in, so the renderer process should not exit if
 298   // this count is non-zero.
 299   int32 pending_views_;
 300
 301  private:
 302   friend class VisitRelayingRenderProcessHost;
 303   friend class ChildProcessLauncherBrowserTest_ChildSpawnFail_Test;
 304
 305   scoped_ptr<IPC::ChannelProxy> CreateChannelProxy(
 306       const std::string& channel_id);
 307
 308   // Creates and adds the IO thread message filters.
 309   void CreateMessageFilters();
 310
 311   // Registers Mojo services to be exposed to the renderer.
 312   void RegisterMojoServices();
 313
 314   // Control message handlers.
 315   void OnShutdownRequest();
 316   void SuddenTerminationChanged(bool enabled);
 317   void OnUserMetricsRecordAction(const std::string& action);
 318   void OnSavedPageAsMHTML(int job_id, int64 mhtml_file_size);
 319   void OnCloseACK(int old_route_id);
 320
 321   // Generates a command line to be used to spawn a renderer and appends the
 322   // results to |*command_line|.
 323   void AppendRendererCommandLine(base::CommandLine* command_line) const;
 324
 325   // Copies applicable command line switches from the given |browser_cmd| line
 326   // flags to the output |renderer_cmd| line flags. Not all switches will be
 327   // copied over.
 328   void PropagateBrowserCommandLineToRenderer(
 329       const base::CommandLine& browser_cmd,
 330       base::CommandLine* renderer_cmd) const;
 331
 332   // Callers can reduce the RenderProcess' priority.
 333   void SetBackgrounded(bool backgrounded);
 334
 335   // Handle termination of our process.
 336   void ProcessDied(bool already_dead, RendererClosedDetails* known_details);
 337
 338   // GpuSwitchingObserver implementation.
 339   void OnGpuSwitched() override;
 340
 341 #if defined(ENABLE_WEBRTC)
 342   void OnRegisterAecDumpConsumer(int id);
 343   void OnUnregisterAecDumpConsumer(int id);
 344   void RegisterAecDumpConsumerOnUIThread(int id);
 345   void UnregisterAecDumpConsumerOnUIThread(int id);
 346   void EnableAecDumpForId(const base::FilePath& file, int id);
 347   // Sends |file_for_transit| to the render process.
 348   void SendAecDumpFileToRenderer(int id,
 349                                  IPC::PlatformFileForTransit file_for_transit);
 350   void SendDisableAecDumpToRenderer();
 351 #endif
 352
 353   scoped_ptr<MojoApplicationHost> mojo_application_host_;
 354
 355   // The registered IPC listener objects. When this list is empty, we should
 356   // delete ourselves.
 357   IDMap<IPC::Listener> listeners_;
 358
 359   // The count of currently visible widgets.  Since the host can be a container
 360   // for multiple widgets, it uses this count to determine when it should be
 361   // backgrounded.
 362   int32 visible_widgets_;
 363
 364   // Does this process have backgrounded priority.
 365   bool backgrounded_;
 366
 367   // Used to allow a RenderWidgetHost to intercept various messages on the
 368   // IO thread.
 369   scoped_refptr<RenderWidgetHelper> widget_helper_;
 370
 371   // The filter for GPU-related messages coming from the renderer.
 372   // Thread safety note: this field is to be accessed from the UI thread.
 373   // We don't keep a reference to it, to avoid it being destroyed on the UI
 374   // thread, but we clear this field when we clear channel_. When channel_ goes
 375   // away, it posts a task to the IO thread to destroy it there, so we know that
 376   // it's valid if non-NULL.
 377   GpuMessageFilter* gpu_message_filter_;
 378
 379   // The filter for MessagePort messages coming from the renderer.
 380   scoped_refptr<MessagePortMessageFilter> message_port_message_filter_;
 381
 382   // The filter for Web Notification messages coming from the renderer. Holds a
 383   // closure per notification that must be freed when the notification closes.
 384   scoped_refptr<NotificationMessageFilter> notification_message_filter_;
 385
 386   // Used in single-process mode.
 387   scoped_ptr<base::Thread> in_process_renderer_;
 388
 389   // True after Init() has been called. We can't just check channel_ because we
 390   // also reset that in the case of process termination.
 391   bool is_initialized_;
 392
 393   // PlzNavigate
 394   // Stores the time at which the first call to Init happened.
 395   base::TimeTicks init_time_;
 396
 397   // Used to launch and terminate the process without blocking the UI thread.
 398   scoped_ptr<ChildProcessLauncher> child_process_launcher_;
 399
 400   // Messages we queue while waiting for the process handle.  We queue them here
 401   // instead of in the channel so that we ensure they're sent after init related
 402   // messages that are sent once the process handle is available.  This is
 403   // because the queued messages may have dependencies on the init messages.
 404   std::queue<IPC::Message*> queued_messages_;
 405
 406   // The globally-unique identifier for this RPH.
 407   int id_;
 408
 409   BrowserContext* browser_context_;
 410
 411   // Owned by |browser_context_|.
 412   StoragePartitionImpl* storage_partition_impl_;
 413
 414   // The observers watching our lifetime.
 415   base::ObserverList<RenderProcessHostObserver> observers_;
 416
 417   // True if the process can be shut down suddenly.  If this is true, then we're
 418   // sure that all the RenderViews in the process can be shutdown suddenly.  If
 419   // it's false, then specific RenderViews might still be allowed to be shutdown
 420   // suddenly by checking their SuddenTerminationAllowed() flag.  This can occur
 421   // if one WebContents has an unload event listener but another WebContents in
 422   // the same process doesn't.
 423   bool sudden_termination_allowed_;
 424
 425   // Set to true if we shouldn't send input events.  We actually do the
 426   // filtering for this at the render widget level.
 427   bool ignore_input_events_;
 428
 429   // Records the last time we regarded the child process active.
 430   base::TimeTicks child_process_activity_time_;
 431
 432   // Indicates whether this RenderProcessHost is exclusively hosting guest
 433   // RenderFrames.
 434   bool is_for_guests_only_;
 435
 436   // Forwards messages between WebRTCInternals in the browser process
 437   // and PeerConnectionTracker in the renderer process.
 438   scoped_refptr<PeerConnectionTrackerHost> peer_connection_tracker_host_;
 439
 440   // Prevents the class from being added as a GpuDataManagerImpl observer more
 441   // than once.
 442   bool gpu_observer_registered_;
 443
 444   // Set if a call to Cleanup is required once the RenderProcessHostImpl is no
 445   // longer within the RenderProcessHostObserver::RenderProcessExited callbacks.
 446   bool delayed_cleanup_needed_;
 447
 448   // Indicates whether RenderProcessHostImpl is currently iterating and calling
 449   // through RenderProcessHostObserver::RenderProcessExited.
 450   bool within_process_died_observer_;
 451
 452   // Forwards power state messages to the renderer process.
 453   PowerMonitorMessageBroadcaster power_monitor_broadcaster_;
 454
 455   scoped_refptr<AudioRendererHost> audio_renderer_host_;
 456
 457   scoped_refptr<BluetoothDispatcherHost> bluetooth_dispatcher_host_;
 458
 459 #if defined(OS_ANDROID)
 460   scoped_refptr<BrowserDemuxerAndroid> browser_demuxer_android_;
 461 #endif
 462
 463 #if defined(ENABLE_BROWSER_CDMS)
 464   scoped_refptr<BrowserCdmManager> browser_cdm_manager_;
 465 #endif
 466
 467 #if defined(ENABLE_WEBRTC)
 468   base::Callback<void(const std::string&)> webrtc_log_message_callback_;
 469
 470   scoped_refptr<P2PSocketDispatcherHost> p2p_socket_dispatcher_host_;
 471
 472   // Must be accessed on UI thread.
 473   std::vector<int> aec_dump_consumers_;
 474
 475   WebRtcStopRtpDumpCallback stop_rtp_dump_callback_;
 476 #endif
 477
 478   int worker_ref_count_;
 479
 480   // Records the time when the process starts surviving for workers for UMA.
 481   base::TimeTicks survive_for_worker_start_time_;
 482
 483   // Records the maximum # of workers simultaneously hosted in this process
 484   // for UMA.
 485   int max_worker_count_;
 486
 487   // Context shared for each PermissionService instance created for this RPH.
 488   scoped_ptr<PermissionServiceContext> permission_service_context_;
 489
 490   // This is a set of all subscription targets valuebuffers in the GPU process
 491   // are currently subscribed too. Used to prevent sending unnecessary
 492   // ValueState updates.
 493   typedef base::hash_set<unsigned int> SubscriptionSet;
 494   SubscriptionSet subscription_set_;
 495
 496   // Maintains ValueStates which are not currently subscribed too so we can
 497   // pass them to the GpuService if a Valuebuffer ever subscribes to the
 498   // respective subscription target
 499   scoped_refptr<gpu::ValueStateMap> pending_valuebuffer_state_;
 500
 501   // Whether or not the CHROMIUM_subscribe_uniform WebGL extension is enabled
 502   bool subscribe_uniform_enabled_;
 503
 504 #if defined(OS_MACOSX) && !defined(OS_IOS)
 505   // Unique unguessable token that the child process is using to acquire
 506   // IOSurface references.
 507   IOSurfaceManagerToken io_surface_manager_token_;
 508 #endif
 509
 510   base::WeakPtrFactory<RenderProcessHostImpl> weak_factory_;
 511
 512   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 513 };
 514
 515 }  // namespace content
 516
 517 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_