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_BROWSER_RENDER_PROCESS_HOST_IMPL_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_BROWSER_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 "base/timer/timer.h"
  16 #include "content/browser/child_process_launcher.h"
  17 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
  18 #include "content/browser/power_monitor_message_broadcaster.h"
  19 #include "content/common/content_export.h"
  20 #include "content/common/mojo/service_registry_impl.h"
  21 #include "content/public/browser/gpu_data_manager_observer.h"
  22 #include "content/public/browser/render_process_host.h"
  23 #include "ipc/ipc_channel_proxy.h"
  24 #include "ipc/ipc_platform_file.h"
  25 #include "mojo/public/cpp/bindings/interface_ptr.h"
  26 #include "ui/gfx/gpu_memory_buffer.h"
  27
  28 #if defined(OS_MACOSX)
  29 #include <IOSurface/IOSurfaceAPI.h>
  30 #include "base/mac/scoped_cftyperef.h"
  31 #endif
  32
  33 namespace base {
  34 class CommandLine;
  35 class MessageLoop;
  36 }
  37
  38 namespace gfx {
  39 class Size;
  40 struct GpuMemoryBufferHandle;
  41 }
  42
  43 namespace content {
  44 class AudioRendererHost;
  45 class BrowserDemuxerAndroid;
  46 class GpuMessageFilter;
  47 class MessagePortMessageFilter;
  48 class MojoApplicationHost;
  49 #if defined(ENABLE_WEBRTC)
  50 class P2PSocketDispatcherHost;
  51 #endif
  52 class PeerConnectionTrackerHost;
  53 class RendererMainThread;
  54 class RenderWidgetHelper;
  55 class RenderWidgetHost;
  56 class RenderWidgetHostImpl;
  57 class RenderWidgetHostViewFrameSubscriber;
  58 class StoragePartition;
  59 class StoragePartitionImpl;
  60
  61 typedef base::Thread* (*RendererMainThreadFactoryFunction)(
  62     const std::string& id);
  63
  64 // Implements a concrete RenderProcessHost for the browser process for talking
  65 // to actual renderer processes (as opposed to mocks).
  66 //
  67 // Represents the browser side of the browser <--> renderer communication
  68 // channel. There will be one RenderProcessHost per renderer process.
  69 //
  70 // This object is refcounted so that it can release its resources when all
  71 // hosts using it go away.
  72 //
  73 // This object communicates back and forth with the RenderProcess object
  74 // running in the renderer process. Each RenderProcessHost and RenderProcess
  75 // keeps a list of RenderView (renderer) and WebContentsImpl (browser) which
  76 // are correlated with IDs. This way, the Views and the corresponding ViewHosts
  77 // communicate through the two process objects.
  78 //
  79 // A RenderProcessHost is also associated with one and only one
  80 // StoragePartition.  This allows us to implement strong storage isolation
  81 // because all the IPCs from the RenderViews (renderer) will only ever be able
  82 // to access the partition they are assigned to.
  83 class CONTENT_EXPORT RenderProcessHostImpl
  84     : public RenderProcessHost,
  85       public ChildProcessLauncher::Client,
  86       public GpuDataManagerObserver {
  87  public:
  88   RenderProcessHostImpl(BrowserContext* browser_context,
  89                         StoragePartitionImpl* storage_partition_impl,
  90                         bool is_isolated_guest);
  91   virtual ~RenderProcessHostImpl();
  92
  93   // RenderProcessHost implementation (public portion).
  94   virtual void EnableSendQueue() OVERRIDE;
  95   virtual bool Init() OVERRIDE;
  96   virtual int GetNextRoutingID() OVERRIDE;
  97   virtual void AddRoute(int32 routing_id, IPC::Listener* listener) OVERRIDE;
  98   virtual void RemoveRoute(int32 routing_id) OVERRIDE;
  99   virtual void AddObserver(RenderProcessHostObserver* observer) OVERRIDE;
 100   virtual void RemoveObserver(RenderProcessHostObserver* observer) OVERRIDE;
 101   virtual void ReceivedBadMessage() OVERRIDE;
 102   virtual void WidgetRestored() OVERRIDE;
 103   virtual void WidgetHidden() OVERRIDE;
 104   virtual int VisibleWidgetCount() const OVERRIDE;
 105   virtual bool IsIsolatedGuest() const OVERRIDE;
 106   virtual StoragePartition* GetStoragePartition() const OVERRIDE;
 107   virtual bool FastShutdownIfPossible() OVERRIDE;
 108   virtual void DumpHandles() OVERRIDE;
 109   virtual base::ProcessHandle GetHandle() const OVERRIDE;
 110   virtual BrowserContext* GetBrowserContext() const OVERRIDE;
 111   virtual bool InSameStoragePartition(
 112       StoragePartition* partition) const OVERRIDE;
 113   virtual int GetID() const OVERRIDE;
 114   virtual bool HasConnection() const OVERRIDE;
 115   virtual void SetIgnoreInputEvents(bool ignore_input_events) OVERRIDE;
 116   virtual bool IgnoreInputEvents() const OVERRIDE;
 117   virtual void Cleanup() OVERRIDE;
 118   virtual void AddPendingView() OVERRIDE;
 119   virtual void RemovePendingView() OVERRIDE;
 120   virtual void SetSuddenTerminationAllowed(bool enabled) OVERRIDE;
 121   virtual bool SuddenTerminationAllowed() const OVERRIDE;
 122   virtual IPC::ChannelProxy* GetChannel() OVERRIDE;
 123   virtual void AddFilter(BrowserMessageFilter* filter) OVERRIDE;
 124   virtual bool FastShutdownForPageCount(size_t count) OVERRIDE;
 125   virtual bool FastShutdownStarted() const OVERRIDE;
 126   virtual base::TimeDelta GetChildProcessIdleTime() const OVERRIDE;
 127   virtual void ResumeRequestsForView(int route_id) OVERRIDE;
 128   virtual void FilterURL(bool empty_allowed, GURL* url) OVERRIDE;
 129 #if defined(ENABLE_WEBRTC)
 130   virtual void EnableAecDump(const base::FilePath& file) OVERRIDE;
 131   virtual void DisableAecDump() OVERRIDE;
 132   virtual void SetWebRtcLogMessageCallback(
 133       base::Callback<void(const std::string&)> callback) OVERRIDE;
 134   virtual WebRtcStopRtpDumpCallback StartRtpDump(
 135       bool incoming,
 136       bool outgoing,
 137       const WebRtcRtpPacketCallback& packet_callback) OVERRIDE;
 138 #endif
 139   virtual void ResumeDeferredNavigation(const GlobalRequestID& request_id)
 140       OVERRIDE;
 141   virtual void NotifyTimezoneChange() OVERRIDE;
 142   virtual ServiceRegistry* GetServiceRegistry() OVERRIDE;
 143
 144   // IPC::Sender via RenderProcessHost.
 145   virtual bool Send(IPC::Message* msg) OVERRIDE;
 146
 147   // IPC::Listener via RenderProcessHost.
 148   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 149   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
 150   virtual void OnChannelError() OVERRIDE;
 151   virtual void OnBadMessageReceived(const IPC::Message& message) OVERRIDE;
 152
 153   // ChildProcessLauncher::Client implementation.
 154   virtual void OnProcessLaunched() OVERRIDE;
 155
 156   scoped_refptr<AudioRendererHost> audio_renderer_host() const;
 157
 158   // Call this function when it is evident that the child process is actively
 159   // performing some operation, for example if we just received an IPC message.
 160   void mark_child_process_activity_time() {
 161     child_process_activity_time_ = base::TimeTicks::Now();
 162   }
 163
 164   // Returns the current number of active views in this process.  Excludes
 165   // any RenderViewHosts that are swapped out.
 166   int GetActiveViewCount();
 167
 168   // Start and end frame subscription for a specific renderer.
 169   // This API only supports subscription to accelerated composited frames.
 170   void BeginFrameSubscription(
 171       int route_id,
 172       scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber);
 173   void EndFrameSubscription(int route_id);
 174
 175 #if defined(ENABLE_WEBRTC)
 176   // Fires the webrtc log message callback with |message|, if callback is set.
 177   void WebRtcLogMessage(const std::string& message);
 178 #endif
 179
 180   // Used to extend the lifetime of the sessions until the render view
 181   // in the renderer is fully closed. This is static because its also called
 182   // with mock hosts as input in test cases.
 183   static void ReleaseOnCloseACK(
 184       RenderProcessHost* host,
 185       const SessionStorageNamespaceMap& sessions,
 186       int view_route_id);
 187
 188   // Register/unregister the host identified by the host id in the global host
 189   // list.
 190   static void RegisterHost(int host_id, RenderProcessHost* host);
 191   static void UnregisterHost(int host_id);
 192
 193   // Implementation of FilterURL below that can be shared with the mock class.
 194   static void FilterURL(RenderProcessHost* rph, bool empty_allowed, GURL* url);
 195
 196   // Returns true if |host| is suitable for launching a new view with |site_url|
 197   // in the given |browser_context|.
 198   static bool IsSuitableHost(RenderProcessHost* host,
 199                              BrowserContext* browser_context,
 200                              const GURL& site_url);
 201
 202   // Returns an existing RenderProcessHost for |url| in |browser_context|,
 203   // if one exists.  Otherwise a new RenderProcessHost should be created and
 204   // registered using RegisterProcessHostForSite().
 205   // This should only be used for process-per-site mode, which can be enabled
 206   // globally with a command line flag or per-site, as determined by
 207   // SiteInstanceImpl::ShouldUseProcessPerSite.
 208   static RenderProcessHost* GetProcessHostForSite(
 209       BrowserContext* browser_context,
 210       const GURL& url);
 211
 212   // Registers the given |process| to be used for any instance of |url|
 213   // within |browser_context|.
 214   // This should only be used for process-per-site mode, which can be enabled
 215   // globally with a command line flag or per-site, as determined by
 216   // SiteInstanceImpl::ShouldUseProcessPerSite.
 217   static void RegisterProcessHostForSite(
 218       BrowserContext* browser_context,
 219       RenderProcessHost* process,
 220       const GURL& url);
 221
 222   static base::MessageLoop* GetInProcessRendererThreadForTesting();
 223
 224   // This forces a renderer that is running "in process" to shut down.
 225   static void ShutDownInProcessRenderer();
 226
 227   static void RegisterRendererMainThreadFactory(
 228       RendererMainThreadFactoryFunction create);
 229
 230 #if defined(OS_ANDROID)
 231   const scoped_refptr<BrowserDemuxerAndroid>& browser_demuxer_android() {
 232     return browser_demuxer_android_;
 233   }
 234 #endif
 235
 236   MessagePortMessageFilter* message_port_message_filter() const {
 237     return message_port_message_filter_.get();
 238   }
 239
 240   void set_is_isolated_guest_for_testing(bool is_isolated_guest) {
 241     is_isolated_guest_ = is_isolated_guest;
 242   }
 243
 244   // Called when the existence of the other renderer process which is connected
 245   // to the Worker in this renderer process has changed.
 246   // It is only called when "enable-embedded-shared-worker" flag is set.
 247   void IncrementWorkerRefCount();
 248   void DecrementWorkerRefCount();
 249
 250   // Call this function to resume the navigation when it was deferred
 251   // immediately after receiving response headers.
 252   void ResumeResponseDeferredAtStart(const GlobalRequestID& request_id);
 253
 254   // Activates Mojo for this process. Does nothing if Mojo is already activated.
 255   void EnsureMojoActivated();
 256
 257  protected:
 258   // A proxy for our IPC::Channel that lives on the IO thread (see
 259   // browser_process.h)
 260   scoped_ptr<IPC::ChannelProxy> channel_;
 261
 262   // True if fast shutdown has been performed on this RPH.
 263   bool fast_shutdown_started_;
 264
 265   // True if we've posted a DeleteTask and will be deleted soon.
 266   bool deleting_soon_;
 267
 268 #ifndef NDEBUG
 269   // True if this object has deleted itself.
 270   bool is_self_deleted_;
 271 #endif
 272
 273   // The count of currently swapped out but pending RenderViews.  We have
 274   // started to swap these in, so the renderer process should not exit if
 275   // this count is non-zero.
 276   int32 pending_views_;
 277
 278  private:
 279   friend class VisitRelayingRenderProcessHost;
 280
 281   void MaybeActivateMojo();
 282   bool ShouldUseMojoChannel() const;
 283   scoped_ptr<IPC::ChannelProxy> CreateChannelProxy(
 284       const std::string& channel_id);
 285
 286   // Creates and adds the IO thread message filters.
 287   void CreateMessageFilters();
 288
 289   // Control message handlers.
 290   void OnShutdownRequest();
 291   void OnDumpHandlesDone();
 292   void SuddenTerminationChanged(bool enabled);
 293   void OnUserMetricsRecordAction(const std::string& action);
 294   void OnSavedPageAsMHTML(int job_id, int64 mhtml_file_size);
 295   void OnCloseACK(int old_route_id);
 296
 297   // Generates a command line to be used to spawn a renderer and appends the
 298   // results to |*command_line|.
 299   void AppendRendererCommandLine(base::CommandLine* command_line) const;
 300
 301   // Copies applicable command line switches from the given |browser_cmd| line
 302   // flags to the output |renderer_cmd| line flags. Not all switches will be
 303   // copied over.
 304   void PropagateBrowserCommandLineToRenderer(
 305       const base::CommandLine& browser_cmd,
 306       base::CommandLine* renderer_cmd) const;
 307
 308   // Callers can reduce the RenderProcess' priority.
 309   void SetBackgrounded(bool backgrounded);
 310
 311   // Handle termination of our process.
 312   void ProcessDied(bool already_dead);
 313
 314   virtual void OnGpuSwitching() OVERRIDE;
 315
 316 #if defined(ENABLE_WEBRTC)
 317   void OnRegisterAecDumpConsumer(int id);
 318   void OnUnregisterAecDumpConsumer(int id);
 319   void RegisterAecDumpConsumerOnUIThread(int id);
 320   void UnregisterAecDumpConsumerOnUIThread(int id);
 321   void EnableAecDumpForId(const base::FilePath& file, int id);
 322   // Sends |file_for_transit| to the render process.
 323   void SendAecDumpFileToRenderer(int id,
 324                                  IPC::PlatformFileForTransit file_for_transit);
 325   void SendDisableAecDumpToRenderer();
 326 #endif
 327
 328   // GpuMemoryBuffer allocation handler.
 329   void OnAllocateGpuMemoryBuffer(uint32 width,
 330                                  uint32 height,
 331                                  uint32 internalformat,
 332                                  uint32 usage,
 333                                  IPC::Message* reply);
 334   void GpuMemoryBufferAllocated(IPC::Message* reply,
 335                                 const gfx::GpuMemoryBufferHandle& handle);
 336   void OnDeletedGpuMemoryBuffer(gfx::GpuMemoryBufferType type,
 337                                 const gfx::GpuMemoryBufferId& id);
 338
 339   scoped_ptr<MojoApplicationHost> mojo_application_host_;
 340   bool mojo_activation_required_;
 341
 342   // The registered IPC listener objects. When this list is empty, we should
 343   // delete ourselves.
 344   IDMap<IPC::Listener> listeners_;
 345
 346   // The count of currently visible widgets.  Since the host can be a container
 347   // for multiple widgets, it uses this count to determine when it should be
 348   // backgrounded.
 349   int32 visible_widgets_;
 350
 351   // Does this process have backgrounded priority.
 352   bool backgrounded_;
 353
 354   // Used to allow a RenderWidgetHost to intercept various messages on the
 355   // IO thread.
 356   scoped_refptr<RenderWidgetHelper> widget_helper_;
 357
 358   // The filter for GPU-related messages coming from the renderer.
 359   // Thread safety note: this field is to be accessed from the UI thread.
 360   // We don't keep a reference to it, to avoid it being destroyed on the UI
 361   // thread, but we clear this field when we clear channel_. When channel_ goes
 362   // away, it posts a task to the IO thread to destroy it there, so we know that
 363   // it's valid if non-NULL.
 364   GpuMessageFilter* gpu_message_filter_;
 365
 366   // The filter for MessagePort messages coming from the renderer.
 367   scoped_refptr<MessagePortMessageFilter> message_port_message_filter_;
 368
 369   // Used in single-process mode.
 370   scoped_ptr<base::Thread> in_process_renderer_;
 371
 372   // True after Init() has been called. We can't just check channel_ because we
 373   // also reset that in the case of process termination.
 374   bool is_initialized_;
 375
 376   // Used to launch and terminate the process without blocking the UI thread.
 377   scoped_ptr<ChildProcessLauncher> child_process_launcher_;
 378
 379   // Messages we queue while waiting for the process handle.  We queue them here
 380   // instead of in the channel so that we ensure they're sent after init related
 381   // messages that are sent once the process handle is available.  This is
 382   // because the queued messages may have dependencies on the init messages.
 383   std::queue<IPC::Message*> queued_messages_;
 384
 385   // The globally-unique identifier for this RPH.
 386   int id_;
 387
 388   BrowserContext* browser_context_;
 389
 390   // Owned by |browser_context_|.
 391   StoragePartitionImpl* storage_partition_impl_;
 392
 393   // The observers watching our lifetime.
 394   ObserverList<RenderProcessHostObserver> observers_;
 395
 396   // True if the process can be shut down suddenly.  If this is true, then we're
 397   // sure that all the RenderViews in the process can be shutdown suddenly.  If
 398   // it's false, then specific RenderViews might still be allowed to be shutdown
 399   // suddenly by checking their SuddenTerminationAllowed() flag.  This can occur
 400   // if one WebContents has an unload event listener but another WebContents in
 401   // the same process doesn't.
 402   bool sudden_termination_allowed_;
 403
 404   // Set to true if we shouldn't send input events.  We actually do the
 405   // filtering for this at the render widget level.
 406   bool ignore_input_events_;
 407
 408   // Records the last time we regarded the child process active.
 409   base::TimeTicks child_process_activity_time_;
 410
 411   // Indicates whether this is a RenderProcessHost of a Browser Plugin guest
 412   // renderer.
 413   bool is_isolated_guest_;
 414
 415   // Forwards messages between WebRTCInternals in the browser process
 416   // and PeerConnectionTracker in the renderer process.
 417   scoped_refptr<PeerConnectionTrackerHost> peer_connection_tracker_host_;
 418
 419   // Prevents the class from being added as a GpuDataManagerImpl observer more
 420   // than once.
 421   bool gpu_observer_registered_;
 422
 423   // Set if a call to Cleanup is required once the RenderProcessHostImpl is no
 424   // longer within the RenderProcessHostObserver::RenderProcessExited callbacks.
 425   bool delayed_cleanup_needed_;
 426
 427   // Indicates whether RenderProcessHostImpl is currently iterating and calling
 428   // through RenderProcessHostObserver::RenderProcessExited.
 429   bool within_process_died_observer_;
 430
 431   // Forwards power state messages to the renderer process.
 432   PowerMonitorMessageBroadcaster power_monitor_broadcaster_;
 433
 434   scoped_refptr<AudioRendererHost> audio_renderer_host_;
 435
 436 #if defined(OS_ANDROID)
 437   scoped_refptr<BrowserDemuxerAndroid> browser_demuxer_android_;
 438 #endif
 439
 440 #if defined(ENABLE_WEBRTC)
 441   base::Callback<void(const std::string&)> webrtc_log_message_callback_;
 442
 443   scoped_refptr<P2PSocketDispatcherHost> p2p_socket_dispatcher_host_;
 444
 445   // Must be accessed on UI thread.
 446   std::vector<int> aec_dump_consumers_;
 447
 448   WebRtcStopRtpDumpCallback stop_rtp_dump_callback_;
 449 #endif
 450
 451   int worker_ref_count_;
 452
 453   // Records the time when the process starts surviving for workers for UMA.
 454   base::TimeTicks survive_for_worker_start_time_;
 455
 456   base::WeakPtrFactory<RenderProcessHostImpl> weak_factory_;
 457
 458 #if defined(OS_MACOSX)
 459   base::ScopedCFTypeRef<IOSurfaceRef> last_io_surface_;
 460 #endif
 461
 462   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 463 };
 464
 465 }  // namespace content
 466
 467 #endif  // CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_