// Copyright (c) 2012 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "content/renderer/render_thread_impl.h" #include #include #include #include #include "base/allocator/allocator_extension.h" #include "base/command_line.h" #include "base/debug/trace_event.h" #include "base/lazy_instance.h" #include "base/logging.h" #include "base/memory/discardable_memory.h" #include "base/memory/shared_memory.h" #include "base/metrics/field_trial.h" #include "base/metrics/histogram.h" #include "base/metrics/stats_table.h" #include "base/path_service.h" #include "base/strings/string16.h" #include "base/strings/string_number_conversions.h" #include "base/strings/string_tokenizer.h" #include "base/strings/utf_string_conversions.h" #include "base/threading/thread_local.h" #include "base/threading/thread_restrictions.h" #include "base/values.h" #include "cc/base/switches.h" #include "cc/resources/raster_worker_pool.h" #include "content/child/appcache/appcache_dispatcher.h" #include "content/child/appcache/appcache_frontend_impl.h" #include "content/child/child_histogram_message_filter.h" #include "content/child/db_message_filter.h" #include "content/child/indexed_db/indexed_db_dispatcher.h" #include "content/child/indexed_db/indexed_db_message_filter.h" #include "content/child/npapi/npobject_util.h" #include "content/child/plugin_messages.h" #include "content/child/resource_dispatcher.h" #include "content/child/runtime_features.h" #include "content/child/thread_safe_sender.h" #include "content/child/web_database_observer_impl.h" #include "content/child/worker_task_runner.h" #include "content/common/child_process_messages.h" #include "content/common/content_constants_internal.h" #include "content/common/database_messages.h" #include "content/common/dom_storage/dom_storage_messages.h" #include "content/common/gpu/client/context_provider_command_buffer.h" #include "content/common/gpu/client/gpu_channel_host.h" #include "content/common/gpu/client/gpu_memory_buffer_impl.h" #include "content/common/gpu/gpu_messages.h" #include "content/common/gpu/gpu_process_launch_causes.h" #include "content/common/mojo/mojo_service_names.h" #include "content/common/resource_messages.h" #include "content/common/view_messages.h" #include "content/common/worker_messages.h" #include "content/public/common/content_constants.h" #include "content/public/common/content_paths.h" #include "content/public/common/content_switches.h" #include "content/public/common/renderer_preferences.h" #include "content/public/common/url_constants.h" #include "content/public/renderer/content_renderer_client.h" #include "content/public/renderer/render_process_observer.h" #include "content/public/renderer/render_view_visitor.h" #include "content/renderer/devtools/devtools_agent_filter.h" #include "content/renderer/dom_storage/dom_storage_dispatcher.h" #include "content/renderer/dom_storage/webstoragearea_impl.h" #include "content/renderer/dom_storage/webstoragenamespace_impl.h" #include "content/renderer/gamepad_shared_memory_reader.h" #include "content/renderer/gpu/compositor_output_surface.h" #include "content/renderer/gpu/gpu_benchmarking_extension.h" #include "content/renderer/input/input_event_filter.h" #include "content/renderer/input/input_handler_manager.h" #include "content/renderer/media/audio_input_message_filter.h" #include "content/renderer/media/audio_message_filter.h" #include "content/renderer/media/audio_renderer_mixer_manager.h" #include "content/renderer/media/media_stream_center.h" #include "content/renderer/media/midi_message_filter.h" #include "content/renderer/media/peer_connection_tracker.h" #include "content/renderer/media/renderer_gpu_video_accelerator_factories.h" #include "content/renderer/media/rtc_peer_connection_handler.h" #include "content/renderer/media/video_capture_impl_manager.h" #include "content/renderer/media/video_capture_message_filter.h" #include "content/renderer/media/webrtc/peer_connection_dependency_factory.h" #include "content/renderer/media/webrtc_identity_service.h" #include "content/renderer/p2p/socket_dispatcher.h" #include "content/renderer/render_process_impl.h" #include "content/renderer/render_view_impl.h" #include "content/renderer/renderer_webkitplatformsupport_impl.h" #include "content/renderer/service_worker/embedded_worker_context_message_filter.h" #include "content/renderer/service_worker/embedded_worker_dispatcher.h" #include "content/renderer/shared_worker/embedded_shared_worker_stub.h" #include "content/renderer/web_ui_setup_impl.h" #include "grit/content_resources.h" #include "ipc/ipc_channel_handle.h" #include "ipc/ipc_forwarding_message_filter.h" #include "ipc/ipc_platform_file.h" #include "media/base/audio_hardware_config.h" #include "media/base/media.h" #include "media/filters/gpu_video_accelerator_factories.h" #include "mojo/common/common_type_converters.h" #include "net/base/net_errors.h" #include "net/base/net_util.h" #include "skia/ext/event_tracer_impl.h" #include "third_party/WebKit/public/platform/WebString.h" #include "third_party/WebKit/public/web/WebColorName.h" #include "third_party/WebKit/public/web/WebDatabase.h" #include "third_party/WebKit/public/web/WebDocument.h" #include "third_party/WebKit/public/web/WebFrame.h" #include "third_party/WebKit/public/web/WebImageCache.h" #include "third_party/WebKit/public/web/WebKit.h" #include "third_party/WebKit/public/web/WebNetworkStateNotifier.h" #include "third_party/WebKit/public/web/WebPopupMenu.h" #include "third_party/WebKit/public/web/WebRuntimeFeatures.h" #include "third_party/WebKit/public/web/WebScriptController.h" #include "third_party/WebKit/public/web/WebSecurityPolicy.h" #include "third_party/WebKit/public/web/WebView.h" #include "third_party/skia/include/core/SkGraphics.h" #include "ui/base/layout.h" #include "ui/base/ui_base_switches.h" #include "v8/include/v8.h" #include "webkit/renderer/compositor_bindings/web_external_bitmap_impl.h" #include "webkit/renderer/compositor_bindings/web_layer_impl.h" #if defined(OS_ANDROID) #include #include "content/renderer/android/synchronous_compositor_factory.h" #include "content/renderer/media/android/renderer_demuxer_android.h" #endif #if defined(OS_MACOSX) #include "content/renderer/webscrollbarbehavior_impl_mac.h" #endif #if defined(OS_POSIX) #include "ipc/ipc_channel_posix.h" #endif #if defined(OS_WIN) #include #include #else // TODO(port) #include "base/memory/scoped_handle.h" #include "content/child/npapi/np_channel_base.h" #endif #if defined(ENABLE_PLUGINS) #include "content/renderer/npapi/plugin_channel_host.h" #endif using base::ThreadRestrictions; using blink::WebDocument; using blink::WebFrame; using blink::WebNetworkStateNotifier; using blink::WebRuntimeFeatures; using blink::WebScriptController; using blink::WebSecurityPolicy; using blink::WebString; using blink::WebView; namespace content { namespace { const int64 kInitialIdleHandlerDelayMs = 1000; const int64 kShortIdleHandlerDelayMs = 1000; const int64 kLongIdleHandlerDelayMs = 30*1000; const int kIdleCPUUsageThresholdInPercents = 3; const int kMinRasterThreads = 1; const int kMaxRasterThreads = 64; // Keep the global RenderThreadImpl in a TLS slot so it is impossible to access // incorrectly from the wrong thread. base::LazyInstance > lazy_tls = LAZY_INSTANCE_INITIALIZER; class RenderViewZoomer : public RenderViewVisitor { public: RenderViewZoomer(const std::string& scheme, const std::string& host, double zoom_level) : scheme_(scheme), host_(host), zoom_level_(zoom_level) { } virtual bool Visit(RenderView* render_view) OVERRIDE { WebView* webview = render_view->GetWebView(); WebDocument document = webview->mainFrame()->document(); // Don't set zoom level for full-page plugin since they don't use the same // zoom settings. if (document.isPluginDocument()) return true; GURL url(document.url()); // Empty scheme works as wildcard that matches any scheme, if ((net::GetHostOrSpecFromURL(url) == host_) && (scheme_.empty() || scheme_ == url.scheme())) { webview->setZoomLevel(zoom_level_); } return true; } private: const std::string scheme_; const std::string host_; const double zoom_level_; DISALLOW_COPY_AND_ASSIGN(RenderViewZoomer); }; std::string HostToCustomHistogramSuffix(const std::string& host) { if (host == "mail.google.com") return ".gmail"; if (host == "docs.google.com" || host == "drive.google.com") return ".docs"; if (host == "plus.google.com") return ".plus"; return std::string(); } void* CreateHistogram( const char *name, int min, int max, size_t buckets) { if (min <= 0) min = 1; std::string histogram_name; RenderThreadImpl* render_thread_impl = RenderThreadImpl::current(); if (render_thread_impl) { // Can be null in tests. histogram_name = render_thread_impl-> histogram_customizer()->ConvertToCustomHistogramName(name); } else { histogram_name = std::string(name); } base::HistogramBase* histogram = base::Histogram::FactoryGet( histogram_name, min, max, buckets, base::Histogram::kUmaTargetedHistogramFlag); return histogram; } void AddHistogramSample(void* hist, int sample) { base::Histogram* histogram = static_cast(hist); histogram->Add(sample); } scoped_ptr AllocateSharedMemoryFunction(size_t size) { return RenderThreadImpl::Get()->HostAllocateSharedMemoryBuffer(size); } void EnableBlinkPlatformLogChannels(const std::string& channels) { if (channels.empty()) return; base::StringTokenizer t(channels, ", "); while (t.GetNext()) blink::enableLogChannel(t.token().c_str()); } void NotifyTimezoneChangeOnThisThread() { v8::Isolate* isolate = v8::Isolate::GetCurrent(); if (!isolate) return; v8::Date::DateTimeConfigurationChangeNotification(isolate); } } // namespace RenderThreadImpl::HistogramCustomizer::HistogramCustomizer() { custom_histograms_.insert("V8.MemoryExternalFragmentationTotal"); custom_histograms_.insert("V8.MemoryHeapSampleTotalCommitted"); custom_histograms_.insert("V8.MemoryHeapSampleTotalUsed"); } RenderThreadImpl::HistogramCustomizer::~HistogramCustomizer() {} void RenderThreadImpl::HistogramCustomizer::RenderViewNavigatedToHost( const std::string& host, size_t view_count) { if (CommandLine::ForCurrentProcess()->HasSwitch( switches::kDisableHistogramCustomizer)) { return; } // Check if all RenderViews are displaying a page from the same host. If there // is only one RenderView, the common host is this view's host. If there are // many, check if this one shares the common host of the other // RenderViews. It's ok to not detect some cases where the RenderViews share a // common host. This information is only used for producing custom histograms. if (view_count == 1) SetCommonHost(host); else if (host != common_host_) SetCommonHost(std::string()); } std::string RenderThreadImpl::HistogramCustomizer::ConvertToCustomHistogramName( const char* histogram_name) const { std::string name(histogram_name); if (!common_host_histogram_suffix_.empty() && custom_histograms_.find(name) != custom_histograms_.end()) name += common_host_histogram_suffix_; return name; } void RenderThreadImpl::HistogramCustomizer::SetCommonHost( const std::string& host) { if (host != common_host_) { common_host_ = host; common_host_histogram_suffix_ = HostToCustomHistogramSuffix(host); v8::V8::SetCreateHistogramFunction(CreateHistogram); } } RenderThreadImpl* RenderThreadImpl::current() { return lazy_tls.Pointer()->Get(); } // When we run plugins in process, we actually run them on the render thread, // which means that we need to make the render thread pump UI events. RenderThreadImpl::RenderThreadImpl() { Init(); } RenderThreadImpl::RenderThreadImpl(const std::string& channel_name) : ChildThread(channel_name) { Init(); } void RenderThreadImpl::Init() { TRACE_EVENT_BEGIN_ETW("RenderThreadImpl::Init", 0, ""); base::debug::TraceLog::GetInstance()->SetThreadSortIndex( base::PlatformThread::CurrentId(), kTraceEventRendererMainThreadSortIndex); v8::V8::SetCounterFunction(base::StatsTable::FindLocation); v8::V8::SetCreateHistogramFunction(CreateHistogram); v8::V8::SetAddHistogramSampleFunction(AddHistogramSample); #if defined(OS_MACOSX) || defined(OS_ANDROID) // On Mac and Android, the select popups are rendered by the browser. blink::WebView::setUseExternalPopupMenus(true); #endif lazy_tls.Pointer()->Set(this); // Register this object as the main thread. ChildProcess::current()->set_main_thread(this); // In single process the single process is all there is. suspend_webkit_shared_timer_ = true; notify_webkit_of_modal_loop_ = true; webkit_shared_timer_suspended_ = false; widget_count_ = 0; hidden_widget_count_ = 0; idle_notification_delay_in_ms_ = kInitialIdleHandlerDelayMs; idle_notifications_to_skip_ = 0; layout_test_mode_ = false; appcache_dispatcher_.reset( new AppCacheDispatcher(Get(), new AppCacheFrontendImpl())); dom_storage_dispatcher_.reset(new DomStorageDispatcher()); main_thread_indexed_db_dispatcher_.reset(new IndexedDBDispatcher( thread_safe_sender())); embedded_worker_dispatcher_.reset(new EmbeddedWorkerDispatcher()); media_stream_center_ = NULL; db_message_filter_ = new DBMessageFilter(); AddFilter(db_message_filter_.get()); vc_manager_.reset(new VideoCaptureImplManager()); AddFilter(vc_manager_->video_capture_message_filter()); #if defined(ENABLE_WEBRTC) peer_connection_tracker_.reset(new PeerConnectionTracker()); AddObserver(peer_connection_tracker_.get()); p2p_socket_dispatcher_ = new P2PSocketDispatcher(GetIOMessageLoopProxy().get()); AddFilter(p2p_socket_dispatcher_.get()); webrtc_identity_service_.reset(new WebRTCIdentityService()); peer_connection_factory_.reset(new PeerConnectionDependencyFactory( p2p_socket_dispatcher_.get())); AddObserver(peer_connection_factory_.get()); #endif // defined(ENABLE_WEBRTC) audio_input_message_filter_ = new AudioInputMessageFilter(GetIOMessageLoopProxy()); AddFilter(audio_input_message_filter_.get()); audio_message_filter_ = new AudioMessageFilter(GetIOMessageLoopProxy()); AddFilter(audio_message_filter_.get()); midi_message_filter_ = new MidiMessageFilter(GetIOMessageLoopProxy()); AddFilter(midi_message_filter_.get()); AddFilter((new IndexedDBMessageFilter(thread_safe_sender()))->GetFilter()); AddFilter((new EmbeddedWorkerContextMessageFilter())->GetFilter()); gamepad_shared_memory_reader_.reset(new GamepadSharedMemoryReader()); AddObserver(gamepad_shared_memory_reader_.get()); GetContentClient()->renderer()->RenderThreadStarted(); InitSkiaEventTracer(); const CommandLine& command_line = *CommandLine::ForCurrentProcess(); if (command_line.HasSwitch(cc::switches::kEnableGpuBenchmarking)) RegisterExtension(GpuBenchmarkingExtension::Get()); is_impl_side_painting_enabled_ = command_line.HasSwitch(switches::kEnableImplSidePainting); webkit::WebLayerImpl::SetImplSidePaintingEnabled( is_impl_side_painting_enabled_); is_zero_copy_enabled_ = command_line.HasSwitch(switches::kEnableZeroCopy) && !command_line.HasSwitch(switches::kDisableZeroCopy); is_one_copy_enabled_ = command_line.HasSwitch(switches::kEnableOneCopy); if (command_line.HasSwitch(switches::kDisableLCDText)) { is_lcd_text_enabled_ = false; } else if (command_line.HasSwitch(switches::kEnableLCDText)) { is_lcd_text_enabled_ = true; } else { #if defined(OS_ANDROID) is_lcd_text_enabled_ = false; #else is_lcd_text_enabled_ = true; #endif } is_gpu_rasterization_enabled_ = command_line.HasSwitch(switches::kEnableGpuRasterization); is_gpu_rasterization_forced_ = command_line.HasSwitch(switches::kForceGpuRasterization); if (command_line.HasSwitch(switches::kDisableDistanceFieldText)) { is_distance_field_text_enabled_ = false; } else if (command_line.HasSwitch(switches::kEnableDistanceFieldText)) { is_distance_field_text_enabled_ = true; } else { is_distance_field_text_enabled_ = false; } is_low_res_tiling_enabled_ = true; if (command_line.HasSwitch(switches::kDisableLowResTiling) && !command_line.HasSwitch(switches::kEnableLowResTiling)) { is_low_res_tiling_enabled_ = false; } // Note that under Linux, the media library will normally already have // been initialized by the Zygote before this instance became a Renderer. base::FilePath media_path; PathService::Get(DIR_MEDIA_LIBS, &media_path); if (!media_path.empty()) media::InitializeMediaLibrary(media_path); memory_pressure_listener_.reset(new base::MemoryPressureListener( base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this)))); std::vector supported_types; base::DiscardableMemory::GetSupportedTypes(&supported_types); DCHECK(!supported_types.empty()); // The default preferred type is always the first one in list. base::DiscardableMemoryType type = supported_types[0]; if (command_line.HasSwitch(switches::kUseDiscardableMemory)) { std::string requested_type_name = command_line.GetSwitchValueASCII( switches::kUseDiscardableMemory); base::DiscardableMemoryType requested_type = base::DiscardableMemory::GetNamedType(requested_type_name); if (std::find(supported_types.begin(), supported_types.end(), requested_type) != supported_types.end()) { type = requested_type; } else { LOG(ERROR) << "Requested discardable memory type is not supported."; } } base::DiscardableMemory::SetPreferredType(type); // Allow discardable memory implementations to register memory pressure // listeners. base::DiscardableMemory::RegisterMemoryPressureListeners(); // AllocateGpuMemoryBuffer must be used exclusively on one thread but // it doesn't have to be the same thread RenderThreadImpl is created on. allocate_gpu_memory_buffer_thread_checker_.DetachFromThread(); if (command_line.HasSwitch(switches::kNumRasterThreads)) { int num_raster_threads; std::string string_value = command_line.GetSwitchValueASCII(switches::kNumRasterThreads); if (base::StringToInt(string_value, &num_raster_threads) && num_raster_threads >= kMinRasterThreads && num_raster_threads <= kMaxRasterThreads) { cc::RasterWorkerPool::SetNumRasterThreads(num_raster_threads); } else { LOG(WARNING) << "Failed to parse switch " << switches::kNumRasterThreads << ": " << string_value; } } TRACE_EVENT_END_ETW("RenderThreadImpl::Init", 0, ""); } RenderThreadImpl::~RenderThreadImpl() { } void RenderThreadImpl::Shutdown() { FOR_EACH_OBSERVER( RenderProcessObserver, observers_, OnRenderProcessShutdown()); ChildThread::Shutdown(); // Wait for all databases to be closed. if (webkit_platform_support_) { webkit_platform_support_->web_database_observer_impl()-> WaitForAllDatabasesToClose(); } // Shutdown in reverse of the initialization order. if (devtools_agent_message_filter_.get()) { RemoveFilter(devtools_agent_message_filter_.get()); devtools_agent_message_filter_ = NULL; } RemoveFilter(audio_input_message_filter_.get()); audio_input_message_filter_ = NULL; RemoveFilter(audio_message_filter_.get()); audio_message_filter_ = NULL; #if defined(ENABLE_WEBRTC) RTCPeerConnectionHandler::DestructAllHandlers(); peer_connection_factory_.reset(); #endif RemoveFilter(vc_manager_->video_capture_message_filter()); vc_manager_.reset(); RemoveFilter(db_message_filter_.get()); db_message_filter_ = NULL; // Shutdown the file thread if it's running. if (file_thread_) file_thread_->Stop(); if (compositor_output_surface_filter_.get()) { RemoveFilter(compositor_output_surface_filter_.get()); compositor_output_surface_filter_ = NULL; } media_thread_.reset(); compositor_thread_.reset(); input_handler_manager_.reset(); if (input_event_filter_.get()) { RemoveFilter(input_event_filter_.get()); input_event_filter_ = NULL; } // RemoveEmbeddedWorkerRoute may be called while deleting // EmbeddedWorkerDispatcher. So it must be deleted before deleting // RenderThreadImpl. embedded_worker_dispatcher_.reset(); // Ramp down IDB before we ramp down WebKit (and V8), since IDB classes might // hold pointers to V8 objects (e.g., via pending requests). main_thread_indexed_db_dispatcher_.reset(); if (webkit_platform_support_) blink::shutdown(); lazy_tls.Pointer()->Set(NULL); // TODO(port) #if defined(OS_WIN) // Clean up plugin channels before this thread goes away. NPChannelBase::CleanupChannels(); #endif } bool RenderThreadImpl::Send(IPC::Message* msg) { // Certain synchronous messages cannot always be processed synchronously by // the browser, e.g., putting up UI and waiting for the user. This could cause // a complete hang of Chrome if a windowed plug-in is trying to communicate // with the renderer thread since the browser's UI thread could be stuck // (within a Windows API call) trying to synchronously communicate with the // plug-in. The remedy is to pump messages on this thread while the browser // is processing this request. This creates an opportunity for re-entrancy // into WebKit, so we need to take care to disable callbacks, timers, and // pending network loads that could trigger such callbacks. bool pumping_events = false; if (msg->is_sync()) { if (msg->is_caller_pumping_messages()) { pumping_events = true; } } bool suspend_webkit_shared_timer = true; // default value std::swap(suspend_webkit_shared_timer, suspend_webkit_shared_timer_); bool notify_webkit_of_modal_loop = true; // default value std::swap(notify_webkit_of_modal_loop, notify_webkit_of_modal_loop_); #if defined(ENABLE_PLUGINS) int render_view_id = MSG_ROUTING_NONE; #endif if (pumping_events) { if (suspend_webkit_shared_timer) webkit_platform_support_->SuspendSharedTimer(); if (notify_webkit_of_modal_loop) WebView::willEnterModalLoop(); #if defined(ENABLE_PLUGINS) RenderViewImpl* render_view = RenderViewImpl::FromRoutingID(msg->routing_id()); if (render_view) { render_view_id = msg->routing_id(); PluginChannelHost::Broadcast( new PluginMsg_SignalModalDialogEvent(render_view_id)); } #endif } bool rv = ChildThread::Send(msg); if (pumping_events) { #if defined(ENABLE_PLUGINS) if (render_view_id != MSG_ROUTING_NONE) { PluginChannelHost::Broadcast( new PluginMsg_ResetModalDialogEvent(render_view_id)); } #endif if (notify_webkit_of_modal_loop) WebView::didExitModalLoop(); if (suspend_webkit_shared_timer) webkit_platform_support_->ResumeSharedTimer(); } return rv; } base::MessageLoop* RenderThreadImpl::GetMessageLoop() { return message_loop(); } IPC::SyncChannel* RenderThreadImpl::GetChannel() { return channel(); } std::string RenderThreadImpl::GetLocale() { // The browser process should have passed the locale to the renderer via the // --lang command line flag. const CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess(); const std::string& lang = parsed_command_line.GetSwitchValueASCII(switches::kLang); DCHECK(!lang.empty()); return lang; } IPC::SyncMessageFilter* RenderThreadImpl::GetSyncMessageFilter() { return sync_message_filter(); } scoped_refptr RenderThreadImpl::GetIOMessageLoopProxy() { return ChildProcess::current()->io_message_loop_proxy(); } void RenderThreadImpl::AddRoute(int32 routing_id, IPC::Listener* listener) { ChildThread::GetRouter()->AddRoute(routing_id, listener); } void RenderThreadImpl::RemoveRoute(int32 routing_id) { ChildThread::GetRouter()->RemoveRoute(routing_id); } void RenderThreadImpl::AddEmbeddedWorkerRoute(int32 routing_id, IPC::Listener* listener) { AddRoute(routing_id, listener); if (devtools_agent_message_filter_.get()) { devtools_agent_message_filter_->AddEmbeddedWorkerRouteOnMainThread( routing_id); } } void RenderThreadImpl::RemoveEmbeddedWorkerRoute(int32 routing_id) { RemoveRoute(routing_id); if (devtools_agent_message_filter_.get()) { devtools_agent_message_filter_->RemoveEmbeddedWorkerRouteOnMainThread( routing_id); } } int RenderThreadImpl::GenerateRoutingID() { int routing_id = MSG_ROUTING_NONE; Send(new ViewHostMsg_GenerateRoutingID(&routing_id)); return routing_id; } void RenderThreadImpl::AddFilter(IPC::MessageFilter* filter) { channel()->AddFilter(filter); } void RenderThreadImpl::RemoveFilter(IPC::MessageFilter* filter) { channel()->RemoveFilter(filter); } void RenderThreadImpl::AddObserver(RenderProcessObserver* observer) { observers_.AddObserver(observer); } void RenderThreadImpl::RemoveObserver(RenderProcessObserver* observer) { observers_.RemoveObserver(observer); } void RenderThreadImpl::SetResourceDispatcherDelegate( ResourceDispatcherDelegate* delegate) { resource_dispatcher()->set_delegate(delegate); } void RenderThreadImpl::EnsureWebKitInitialized() { if (webkit_platform_support_) return; webkit_platform_support_.reset(new RendererWebKitPlatformSupportImpl); blink::initialize(webkit_platform_support_.get()); const CommandLine& command_line = *CommandLine::ForCurrentProcess(); bool enable = command_line.HasSwitch(switches::kEnableThreadedCompositing); if (enable) { #if defined(OS_ANDROID) if (SynchronousCompositorFactory* factory = SynchronousCompositorFactory::GetInstance()) compositor_message_loop_proxy_ = factory->GetCompositorMessageLoop(); #endif if (!compositor_message_loop_proxy_.get()) { compositor_thread_.reset(new base::Thread("Compositor")); compositor_thread_->Start(); #if defined(OS_ANDROID) compositor_thread_->SetPriority(base::kThreadPriority_Display); #endif compositor_message_loop_proxy_ = compositor_thread_->message_loop_proxy(); compositor_message_loop_proxy_->PostTask( FROM_HERE, base::Bind(base::IgnoreResult(&ThreadRestrictions::SetIOAllowed), false)); } InputHandlerManagerClient* input_handler_manager_client = NULL; #if defined(OS_ANDROID) if (SynchronousCompositorFactory* factory = SynchronousCompositorFactory::GetInstance()) { input_handler_manager_client = factory->GetInputHandlerManagerClient(); } #endif if (!input_handler_manager_client) { input_event_filter_ = new InputEventFilter(this, compositor_message_loop_proxy_); AddFilter(input_event_filter_.get()); input_handler_manager_client = input_event_filter_.get(); } input_handler_manager_.reset( new InputHandlerManager(compositor_message_loop_proxy_, input_handler_manager_client)); } scoped_refptr output_surface_loop; if (enable) output_surface_loop = compositor_message_loop_proxy_; else output_surface_loop = base::MessageLoopProxy::current(); compositor_output_surface_filter_ = CompositorOutputSurface::CreateFilter(output_surface_loop.get()); AddFilter(compositor_output_surface_filter_.get()); RenderThreadImpl::RegisterSchemes(); EnableBlinkPlatformLogChannels( command_line.GetSwitchValueASCII(switches::kBlinkPlatformLogChannels)); SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line); if (!media::IsMediaLibraryInitialized()) { WebRuntimeFeatures::enableMediaPlayer(false); WebRuntimeFeatures::enableWebAudio(false); } FOR_EACH_OBSERVER(RenderProcessObserver, observers_, WebKitInitialized()); devtools_agent_message_filter_ = new DevToolsAgentFilter(); AddFilter(devtools_agent_message_filter_.get()); if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) ScheduleIdleHandler(kLongIdleHandlerDelayMs); webkit::SetSharedMemoryAllocationFunction(AllocateSharedMemoryFunction); // Limit use of the scaled image cache to when deferred image decoding // is enabled. // TODO(reveman): Allow use of this cache on Android once // SkDiscardablePixelRef is used for decoded images. crbug.com/330041 bool use_skia_scaled_image_cache = false; #if !defined(OS_ANDROID) use_skia_scaled_image_cache = command_line.HasSwitch(switches::kEnableDeferredImageDecoding) || is_impl_side_painting_enabled_; #endif if (!use_skia_scaled_image_cache) SkGraphics::SetImageCacheByteLimit(0u); } void RenderThreadImpl::RegisterSchemes() { // swappedout: pages should not be accessible, and should also // be treated as empty documents that can commit synchronously. WebString swappedout_scheme(base::ASCIIToUTF16(kSwappedOutScheme)); WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(swappedout_scheme); WebSecurityPolicy::registerURLSchemeAsEmptyDocument(swappedout_scheme); } void RenderThreadImpl::NotifyTimezoneChange() { NotifyTimezoneChangeOnThisThread(); RenderThread::Get()->PostTaskToAllWebWorkers( base::Bind(&NotifyTimezoneChangeOnThisThread)); } void RenderThreadImpl::RecordAction(const base::UserMetricsAction& action) { Send(new ViewHostMsg_UserMetricsRecordAction(action.str_)); } void RenderThreadImpl::RecordComputedAction(const std::string& action) { Send(new ViewHostMsg_UserMetricsRecordAction(action)); } scoped_ptr RenderThreadImpl::HostAllocateSharedMemoryBuffer(size_t size) { if (size > static_cast(std::numeric_limits::max())) return scoped_ptr(); base::SharedMemoryHandle handle; bool success; IPC::Message* message = new ChildProcessHostMsg_SyncAllocateSharedMemory(size, &handle); // Allow calling this from the compositor thread. if (base::MessageLoop::current() == message_loop()) success = ChildThread::Send(message); else success = sync_message_filter()->Send(message); if (!success) return scoped_ptr(); if (!base::SharedMemory::IsHandleValid(handle)) return scoped_ptr(); return scoped_ptr(new base::SharedMemory(handle, false)); } void RenderThreadImpl::RegisterExtension(v8::Extension* extension) { WebScriptController::registerExtension(extension); } void RenderThreadImpl::ScheduleIdleHandler(int64 initial_delay_ms) { idle_notification_delay_in_ms_ = initial_delay_ms; idle_timer_.Stop(); idle_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(initial_delay_ms), this, &RenderThreadImpl::IdleHandler); } void RenderThreadImpl::IdleHandler() { bool run_in_foreground_tab = (widget_count_ > hidden_widget_count_) && GetContentClient()->renderer()-> RunIdleHandlerWhenWidgetsHidden(); if (run_in_foreground_tab) { IdleHandlerInForegroundTab(); return; } base::allocator::ReleaseFreeMemory(); // Continue the idle timer if the webkit shared timer is not suspended or // something is left to do. bool continue_timer = !webkit_shared_timer_suspended_; if (!v8::V8::IdleNotification()) { continue_timer = true; } // Schedule next invocation. // Dampen the delay using the algorithm (if delay is in seconds): // delay = delay + 1 / (delay + 2) // Using floor(delay) has a dampening effect such as: // 1s, 1, 1, 2, 2, 2, 2, 3, 3, ... // If the delay is in milliseconds, the above formula is equivalent to: // delay_ms / 1000 = delay_ms / 1000 + 1 / (delay_ms / 1000 + 2) // which is equivalent to // delay_ms = delay_ms + 1000*1000 / (delay_ms + 2000). // Note that idle_notification_delay_in_ms_ would be reset to // kInitialIdleHandlerDelayMs in RenderThreadImpl::WidgetHidden. if (continue_timer) { ScheduleIdleHandler(idle_notification_delay_in_ms_ + 1000000 / (idle_notification_delay_in_ms_ + 2000)); } else { idle_timer_.Stop(); } FOR_EACH_OBSERVER(RenderProcessObserver, observers_, IdleNotification()); } void RenderThreadImpl::IdleHandlerInForegroundTab() { // Increase the delay in the same way as in IdleHandler, // but make it periodic by reseting it once it is too big. int64 new_delay_ms = idle_notification_delay_in_ms_ + 1000000 / (idle_notification_delay_in_ms_ + 2000); if (new_delay_ms >= kLongIdleHandlerDelayMs) new_delay_ms = kShortIdleHandlerDelayMs; if (idle_notifications_to_skip_ > 0) { idle_notifications_to_skip_--; } else { int cpu_usage = 0; Send(new ViewHostMsg_GetCPUUsage(&cpu_usage)); // Idle notification hint roughly specifies the expected duration of the // idle pause. We set it proportional to the idle timer delay. int idle_hint = static_cast(new_delay_ms / 10); if (cpu_usage < kIdleCPUUsageThresholdInPercents) { base::allocator::ReleaseFreeMemory(); if (v8::V8::IdleNotification(idle_hint)) { // V8 finished collecting garbage. new_delay_ms = kLongIdleHandlerDelayMs; } } } ScheduleIdleHandler(new_delay_ms); } int64 RenderThreadImpl::GetIdleNotificationDelayInMs() const { return idle_notification_delay_in_ms_; } void RenderThreadImpl::SetIdleNotificationDelayInMs( int64 idle_notification_delay_in_ms) { idle_notification_delay_in_ms_ = idle_notification_delay_in_ms; } void RenderThreadImpl::UpdateHistograms(int sequence_number) { child_histogram_message_filter()->SendHistograms(sequence_number); } int RenderThreadImpl::PostTaskToAllWebWorkers(const base::Closure& closure) { return WorkerTaskRunner::Instance()->PostTaskToAllThreads(closure); } bool RenderThreadImpl::ResolveProxy(const GURL& url, std::string* proxy_list) { bool result = false; Send(new ViewHostMsg_ResolveProxy(url, &result, proxy_list)); return result; } void RenderThreadImpl::PostponeIdleNotification() { idle_notifications_to_skip_ = 2; } scoped_refptr RenderThreadImpl::GetGpuFactories() { DCHECK(IsMainThread()); scoped_refptr gpu_channel_host = GetGpuChannel(); const CommandLine* cmd_line = CommandLine::ForCurrentProcess(); scoped_refptr gpu_factories; scoped_refptr media_loop_proxy = GetMediaThreadMessageLoopProxy(); if (!cmd_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) { if (!gpu_va_context_provider_ || gpu_va_context_provider_->DestroyedOnMainThread()) { if (!gpu_channel_host) { gpu_channel_host = EstablishGpuChannelSync( CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE); } blink::WebGraphicsContext3D::Attributes attributes; bool lose_context_when_out_of_memory = false; gpu_va_context_provider_ = ContextProviderCommandBuffer::Create( make_scoped_ptr( WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext( gpu_channel_host.get(), attributes, lose_context_when_out_of_memory, GURL("chrome://gpu/RenderThreadImpl::GetGpuVDAContext3D"), WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits(), NULL)), "GPU-VideoAccelerator-Offscreen"); } } if (gpu_va_context_provider_) { gpu_factories = RendererGpuVideoAcceleratorFactories::Create( gpu_channel_host, media_loop_proxy, gpu_va_context_provider_); } return gpu_factories; } scoped_ptr RenderThreadImpl::CreateOffscreenContext3d() { blink::WebGraphicsContext3D::Attributes attributes; attributes.shareResources = true; attributes.depth = false; attributes.stencil = false; attributes.antialias = false; attributes.noAutomaticFlushes = true; bool lose_context_when_out_of_memory = true; scoped_refptr gpu_channel_host(EstablishGpuChannelSync( CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE)); return make_scoped_ptr( WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext( gpu_channel_host.get(), attributes, lose_context_when_out_of_memory, GURL("chrome://gpu/RenderThreadImpl::CreateOffscreenContext3d"), WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits(), NULL)); } scoped_refptr RenderThreadImpl::SharedMainThreadContextProvider() { DCHECK(IsMainThread()); #if defined(OS_ANDROID) if (SynchronousCompositorFactory* factory = SynchronousCompositorFactory::GetInstance()) return factory->GetSharedOffscreenContextProviderForMainThread(); #endif if (!shared_main_thread_contexts_ || shared_main_thread_contexts_->DestroyedOnMainThread()) { shared_main_thread_contexts_ = ContextProviderCommandBuffer::Create( CreateOffscreenContext3d(), "Offscreen-MainThread"); } if (shared_main_thread_contexts_ && !shared_main_thread_contexts_->BindToCurrentThread()) shared_main_thread_contexts_ = NULL; return shared_main_thread_contexts_; } AudioRendererMixerManager* RenderThreadImpl::GetAudioRendererMixerManager() { if (!audio_renderer_mixer_manager_) { audio_renderer_mixer_manager_.reset(new AudioRendererMixerManager( GetAudioHardwareConfig())); } return audio_renderer_mixer_manager_.get(); } media::AudioHardwareConfig* RenderThreadImpl::GetAudioHardwareConfig() { if (!audio_hardware_config_) { media::AudioParameters input_params; media::AudioParameters output_params; Send(new ViewHostMsg_GetAudioHardwareConfig( &input_params, &output_params)); audio_hardware_config_.reset(new media::AudioHardwareConfig( input_params, output_params)); audio_message_filter_->SetAudioHardwareConfig(audio_hardware_config_.get()); } return audio_hardware_config_.get(); } base::WaitableEvent* RenderThreadImpl::GetShutdownEvent() { return ChildProcess::current()->GetShutDownEvent(); } #if defined(OS_WIN) void RenderThreadImpl::PreCacheFontCharacters(const LOGFONT& log_font, const base::string16& str) { Send(new ViewHostMsg_PreCacheFontCharacters(log_font, str)); } void RenderThreadImpl::PreCacheFont(const LOGFONT& log_font) { Send(new ChildProcessHostMsg_PreCacheFont(log_font)); } void RenderThreadImpl::ReleaseCachedFonts() { Send(new ChildProcessHostMsg_ReleaseCachedFonts()); } #endif // OS_WIN bool RenderThreadImpl::IsMainThread() { return !!current(); } base::MessageLoop* RenderThreadImpl::GetMainLoop() { return message_loop(); } scoped_refptr RenderThreadImpl::GetIOLoopProxy() { return io_message_loop_proxy_; } scoped_ptr RenderThreadImpl::AllocateSharedMemory( size_t size) { return scoped_ptr( HostAllocateSharedMemoryBuffer(size)); } bool RenderThreadImpl::CreateViewCommandBuffer( int32 surface_id, const GPUCreateCommandBufferConfig& init_params, int32 route_id) { TRACE_EVENT1("gpu", "RenderThreadImpl::CreateViewCommandBuffer", "surface_id", surface_id); bool succeeded = false; IPC::Message* message = new GpuHostMsg_CreateViewCommandBuffer( surface_id, init_params, route_id, &succeeded); // Allow calling this from the compositor thread. thread_safe_sender()->Send(message); return succeeded; } void RenderThreadImpl::CreateImage( gfx::PluginWindowHandle window, int32 image_id, const CreateImageCallback& callback) { NOTREACHED(); } void RenderThreadImpl::DeleteImage(int32 image_id, int32 sync_point) { NOTREACHED(); } scoped_ptr RenderThreadImpl::AllocateGpuMemoryBuffer( size_t width, size_t height, unsigned internalformat, unsigned usage) { DCHECK(allocate_gpu_memory_buffer_thread_checker_.CalledOnValidThread()); if (!GpuMemoryBufferImpl::IsFormatValid(internalformat)) return scoped_ptr(); gfx::GpuMemoryBufferHandle handle; bool success; IPC::Message* message = new ChildProcessHostMsg_SyncAllocateGpuMemoryBuffer( width, height, internalformat, usage, &handle); // Allow calling this from the compositor thread. if (base::MessageLoop::current() == message_loop()) success = ChildThread::Send(message); else success = sync_message_filter()->Send(message); if (!success) return scoped_ptr(); return GpuMemoryBufferImpl::CreateFromHandle( handle, gfx::Size(width, height), internalformat) .PassAs(); } void RenderThreadImpl::ConnectToService( const mojo::String& service_name, mojo::ScopedMessagePipeHandle message_pipe) { // TODO(darin): Invent some kind of registration system to use here. if (service_name.To() == kRendererService_WebUISetup) { WebUISetupImpl::Bind(message_pipe.Pass()); } else { NOTREACHED() << "Unknown service name"; } } void RenderThreadImpl::DoNotSuspendWebKitSharedTimer() { suspend_webkit_shared_timer_ = false; } void RenderThreadImpl::DoNotNotifyWebKitOfModalLoop() { notify_webkit_of_modal_loop_ = false; } void RenderThreadImpl::OnSetZoomLevelForCurrentURL(const std::string& scheme, const std::string& host, double zoom_level) { RenderViewZoomer zoomer(scheme, host, zoom_level); RenderView::ForEach(&zoomer); } bool RenderThreadImpl::OnControlMessageReceived(const IPC::Message& msg) { ObserverListBase::Iterator it(observers_); RenderProcessObserver* observer; while ((observer = it.GetNext()) != NULL) { if (observer->OnControlMessageReceived(msg)) return true; } // Some messages are handled by delegates. if (appcache_dispatcher_->OnMessageReceived(msg) || dom_storage_dispatcher_->OnMessageReceived(msg) || embedded_worker_dispatcher_->OnMessageReceived(msg)) { return true; } bool handled = true; IPC_BEGIN_MESSAGE_MAP(RenderThreadImpl, msg) IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevelForCurrentURL, OnSetZoomLevelForCurrentURL) // TODO(port): removed from render_messages_internal.h; // is there a new non-windows message I should add here? IPC_MESSAGE_HANDLER(ViewMsg_New, OnCreateNewView) IPC_MESSAGE_HANDLER(ViewMsg_PurgePluginListCache, OnPurgePluginListCache) IPC_MESSAGE_HANDLER(ViewMsg_NetworkStateChanged, OnNetworkStateChanged) IPC_MESSAGE_HANDLER(ViewMsg_TempCrashWithData, OnTempCrashWithData) IPC_MESSAGE_HANDLER(WorkerProcessMsg_CreateWorker, OnCreateNewSharedWorker) IPC_MESSAGE_HANDLER(ViewMsg_TimezoneChange, OnUpdateTimezone) #if defined(OS_ANDROID) IPC_MESSAGE_HANDLER(ViewMsg_SetWebKitSharedTimersSuspended, OnSetWebKitSharedTimersSuspended) #endif #if defined(OS_MACOSX) IPC_MESSAGE_HANDLER(ViewMsg_UpdateScrollbarTheme, OnUpdateScrollbarTheme) #endif IPC_MESSAGE_UNHANDLED(handled = false) IPC_END_MESSAGE_MAP() return handled; } void RenderThreadImpl::OnCreateNewView(const ViewMsg_New_Params& params) { EnsureWebKitInitialized(); // When bringing in render_view, also bring in webkit's glue and jsbindings. RenderViewImpl::Create(params.opener_route_id, params.window_was_created_with_opener, params.renderer_preferences, params.web_preferences, params.view_id, params.main_frame_routing_id, params.surface_id, params.session_storage_namespace_id, params.frame_name, false, params.swapped_out, params.proxy_routing_id, params.hidden, params.never_visible, params.next_page_id, params.screen_info, params.accessibility_mode); } GpuChannelHost* RenderThreadImpl::EstablishGpuChannelSync( CauseForGpuLaunch cause_for_gpu_launch) { TRACE_EVENT0("gpu", "RenderThreadImpl::EstablishGpuChannelSync"); if (gpu_channel_.get()) { // Do nothing if we already have a GPU channel or are already // establishing one. if (!gpu_channel_->IsLost()) return gpu_channel_.get(); // Recreate the channel if it has been lost. gpu_channel_ = NULL; } // Ask the browser for the channel name. int client_id = 0; IPC::ChannelHandle channel_handle; gpu::GPUInfo gpu_info; if (!Send(new GpuHostMsg_EstablishGpuChannel(cause_for_gpu_launch, &client_id, &channel_handle, &gpu_info)) || #if defined(OS_POSIX) channel_handle.socket.fd == -1 || #endif channel_handle.name.empty()) { // Otherwise cancel the connection. return NULL; } GetContentClient()->SetGpuInfo(gpu_info); // Cache some variables that are needed on the compositor thread for our // implementation of GpuChannelHostFactory. io_message_loop_proxy_ = ChildProcess::current()->io_message_loop_proxy(); gpu_channel_ = GpuChannelHost::Create( this, gpu_info, channel_handle, ChildProcess::current()->GetShutDownEvent()); return gpu_channel_.get(); } blink::WebMediaStreamCenter* RenderThreadImpl::CreateMediaStreamCenter( blink::WebMediaStreamCenterClient* client) { #if defined(OS_ANDROID) if (CommandLine::ForCurrentProcess()->HasSwitch( switches::kDisableWebRTC)) return NULL; #endif #if defined(ENABLE_WEBRTC) if (!media_stream_center_) { media_stream_center_ = GetContentClient()->renderer() ->OverrideCreateWebMediaStreamCenter(client); if (!media_stream_center_) { scoped_ptr media_stream_center( new MediaStreamCenter(client, GetPeerConnectionDependencyFactory())); AddObserver(media_stream_center.get()); media_stream_center_ = media_stream_center.release(); } } #endif return media_stream_center_; } PeerConnectionDependencyFactory* RenderThreadImpl::GetPeerConnectionDependencyFactory() { return peer_connection_factory_.get(); } GpuChannelHost* RenderThreadImpl::GetGpuChannel() { if (!gpu_channel_.get()) return NULL; if (gpu_channel_->IsLost()) return NULL; return gpu_channel_.get(); } void RenderThreadImpl::OnPurgePluginListCache(bool reload_pages) { EnsureWebKitInitialized(); // The call below will cause a GetPlugins call with refresh=true, but at this // point we already know that the browser has refreshed its list, so disable // refresh temporarily to prevent each renderer process causing the list to be // regenerated. webkit_platform_support_->set_plugin_refresh_allowed(false); blink::resetPluginCache(reload_pages); webkit_platform_support_->set_plugin_refresh_allowed(true); FOR_EACH_OBSERVER(RenderProcessObserver, observers_, PluginListChanged()); } void RenderThreadImpl::OnNetworkStateChanged(bool online) { EnsureWebKitInitialized(); WebNetworkStateNotifier::setOnLine(online); FOR_EACH_OBSERVER(RenderProcessObserver, observers_, NetworkStateChanged(online)); } void RenderThreadImpl::OnTempCrashWithData(const GURL& data) { GetContentClient()->SetActiveURL(data); CHECK(false); } void RenderThreadImpl::OnUpdateTimezone() { NotifyTimezoneChange(); } #if defined(OS_ANDROID) void RenderThreadImpl::OnSetWebKitSharedTimersSuspended(bool suspend) { if (suspend_webkit_shared_timer_) { EnsureWebKitInitialized(); if (suspend) { webkit_platform_support_->SuspendSharedTimer(); } else { webkit_platform_support_->ResumeSharedTimer(); } webkit_shared_timer_suspended_ = suspend; } } #endif #if defined(OS_MACOSX) void RenderThreadImpl::OnUpdateScrollbarTheme( float initial_button_delay, float autoscroll_button_delay, bool jump_on_track_click, blink::ScrollerStyle preferred_scroller_style, bool redraw) { EnsureWebKitInitialized(); static_cast( webkit_platform_support_->scrollbarBehavior())->set_jump_on_track_click( jump_on_track_click); blink::WebScrollbarTheme::updateScrollbars(initial_button_delay, autoscroll_button_delay, preferred_scroller_style, redraw); } #endif void RenderThreadImpl::OnCreateNewSharedWorker( const WorkerProcessMsg_CreateWorker_Params& params) { // EmbeddedSharedWorkerStub will self-destruct. new EmbeddedSharedWorkerStub(params.url, params.name, params.content_security_policy, params.security_policy_type, params.pause_on_start, params.route_id); } void RenderThreadImpl::OnMemoryPressure( base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level) { base::allocator::ReleaseFreeMemory(); if (memory_pressure_level == base::MemoryPressureListener::MEMORY_PRESSURE_CRITICAL) { // Trigger full v8 garbage collection on critical memory notification. v8::V8::LowMemoryNotification(); if (webkit_platform_support_) { // Clear the image cache. Do not call into blink if it is not initialized. blink::WebImageCache::clear(); } // Purge Skia font cache, by setting it to 0 and then again to the previous // limit. size_t font_cache_limit = SkGraphics::SetFontCacheLimit(0); SkGraphics::SetFontCacheLimit(font_cache_limit); } else { // Otherwise trigger a couple of v8 GCs using IdleNotification. if (!v8::V8::IdleNotification()) v8::V8::IdleNotification(); } } scoped_refptr RenderThreadImpl::GetFileThreadMessageLoopProxy() { DCHECK(message_loop() == base::MessageLoop::current()); if (!file_thread_) { file_thread_.reset(new base::Thread("Renderer::FILE")); file_thread_->Start(); } return file_thread_->message_loop_proxy(); } scoped_refptr RenderThreadImpl::GetMediaThreadMessageLoopProxy() { DCHECK(message_loop() == base::MessageLoop::current()); if (!media_thread_) { media_thread_.reset(new base::Thread("Media")); media_thread_->Start(); #if defined(OS_ANDROID) renderer_demuxer_ = new RendererDemuxerAndroid(); AddFilter(renderer_demuxer_.get()); #endif } return media_thread_->message_loop_proxy(); } void RenderThreadImpl::SetFlingCurveParameters( const std::vector& new_touchpad, const std::vector& new_touchscreen) { webkit_platform_support_->SetFlingCurveParameters(new_touchpad, new_touchscreen); } void RenderThreadImpl::SampleGamepads(blink::WebGamepads* data) { gamepad_shared_memory_reader_->SampleGamepads(*data); } void RenderThreadImpl::SetGamepadListener(blink::WebGamepadListener* listener) { gamepad_shared_memory_reader_->SetGamepadListener(listener); } void RenderThreadImpl::WidgetCreated() { widget_count_++; } void RenderThreadImpl::WidgetDestroyed() { widget_count_--; } void RenderThreadImpl::WidgetHidden() { DCHECK_LT(hidden_widget_count_, widget_count_); hidden_widget_count_++; if (widget_count_ && hidden_widget_count_ == widget_count_) { #if !defined(SYSTEM_NATIVELY_SIGNALS_MEMORY_PRESSURE) // TODO(vollick): Remove this this heavy-handed approach once we're polling // the real system memory pressure. base::MemoryPressureListener::NotifyMemoryPressure( base::MemoryPressureListener::MEMORY_PRESSURE_MODERATE); #endif if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) ScheduleIdleHandler(kInitialIdleHandlerDelayMs); } } void RenderThreadImpl::WidgetRestored() { DCHECK_GT(hidden_widget_count_, 0); hidden_widget_count_--; if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) { return; } ScheduleIdleHandler(kLongIdleHandlerDelayMs); } } // namespace content