render_thread_impl.cc revision fb250657ef40d7500f20882d5c9909c1013367d3
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#include "content/renderer/render_thread_impl.h" 6 7#include <algorithm> 8#include <limits> 9#include <map> 10#include <vector> 11 12#include "base/allocator/allocator_extension.h" 13#include "base/command_line.h" 14#include "base/debug/trace_event.h" 15#include "base/lazy_instance.h" 16#include "base/logging.h" 17#include "base/memory/discardable_memory.h" 18#include "base/memory/shared_memory.h" 19#include "base/metrics/field_trial.h" 20#include "base/metrics/histogram.h" 21#include "base/metrics/stats_table.h" 22#include "base/path_service.h" 23#include "base/strings/string16.h" 24#include "base/strings/string_tokenizer.h" 25#include "base/strings/utf_string_conversions.h" 26#include "base/threading/thread_local.h" 27#include "base/threading/thread_restrictions.h" 28#include "base/values.h" 29#include "content/child/appcache_dispatcher.h" 30#include "content/child/child_histogram_message_filter.h" 31#include "content/child/db_message_filter.h" 32#include "content/child/indexed_db/indexed_db_dispatcher.h" 33#include "content/child/indexed_db/indexed_db_message_filter.h" 34#include "content/child/npapi/npobject_util.h" 35#include "content/child/plugin_messages.h" 36#include "content/child/resource_dispatcher.h" 37#include "content/child/runtime_features.h" 38#include "content/child/thread_safe_sender.h" 39#include "content/child/web_database_observer_impl.h" 40#include "content/common/child_process_messages.h" 41#include "content/common/content_constants_internal.h" 42#include "content/common/database_messages.h" 43#include "content/common/dom_storage_messages.h" 44#include "content/common/gpu/client/context_provider_command_buffer.h" 45#include "content/common/gpu/client/gpu_channel_host.h" 46#include "content/common/gpu/gpu_messages.h" 47#include "content/common/resource_messages.h" 48#include "content/common/view_messages.h" 49#include "content/public/common/content_constants.h" 50#include "content/public/common/content_paths.h" 51#include "content/public/common/content_switches.h" 52#include "content/public/common/renderer_preferences.h" 53#include "content/public/common/url_constants.h" 54#include "content/public/renderer/content_renderer_client.h" 55#include "content/public/renderer/render_process_observer.h" 56#include "content/public/renderer/render_view_visitor.h" 57#include "content/renderer/devtools/devtools_agent_filter.h" 58#include "content/renderer/dom_storage/dom_storage_dispatcher.h" 59#include "content/renderer/dom_storage/webstoragearea_impl.h" 60#include "content/renderer/dom_storage/webstoragenamespace_impl.h" 61#include "content/renderer/gpu/compositor_output_surface.h" 62#include "content/renderer/gpu/gpu_benchmarking_extension.h" 63#include "content/renderer/gpu/input_event_filter.h" 64#include "content/renderer/gpu/input_handler_manager.h" 65#include "content/renderer/media/audio_input_message_filter.h" 66#include "content/renderer/media/audio_message_filter.h" 67#include "content/renderer/media/audio_renderer_mixer_manager.h" 68#include "content/renderer/media/media_stream_center.h" 69#include "content/renderer/media/media_stream_dependency_factory.h" 70#include "content/renderer/media/midi_message_filter.h" 71#include "content/renderer/media/peer_connection_tracker.h" 72#include "content/renderer/media/video_capture_impl_manager.h" 73#include "content/renderer/media/video_capture_message_filter.h" 74#include "content/renderer/media/webrtc_identity_service.h" 75#include "content/renderer/memory_benchmarking_extension.h" 76#include "content/renderer/p2p/socket_dispatcher.h" 77#include "content/renderer/plugin_channel_host.h" 78#include "content/renderer/render_process_impl.h" 79#include "content/renderer/render_process_visibility_manager.h" 80#include "content/renderer/render_view_impl.h" 81#include "content/renderer/renderer_webkitplatformsupport_impl.h" 82#include "content/renderer/skia_benchmarking_extension.h" 83#include "grit/content_resources.h" 84#include "ipc/ipc_channel_handle.h" 85#include "ipc/ipc_forwarding_message_filter.h" 86#include "ipc/ipc_platform_file.h" 87#include "media/base/audio_hardware_config.h" 88#include "media/base/media.h" 89#include "media/filters/gpu_video_decoder_factories.h" 90#include "net/base/net_errors.h" 91#include "net/base/net_util.h" 92#include "third_party/WebKit/public/platform/WebString.h" 93#include "third_party/WebKit/public/web/WebColorName.h" 94#include "third_party/WebKit/public/web/WebDatabase.h" 95#include "third_party/WebKit/public/web/WebDocument.h" 96#include "third_party/WebKit/public/web/WebFrame.h" 97#include "third_party/WebKit/public/web/WebImageCache.h" 98#include "third_party/WebKit/public/web/WebKit.h" 99#include "third_party/WebKit/public/web/WebNetworkStateNotifier.h" 100#include "third_party/WebKit/public/web/WebPopupMenu.h" 101#include "third_party/WebKit/public/web/WebRuntimeFeatures.h" 102#include "third_party/WebKit/public/web/WebScriptController.h" 103#include "third_party/WebKit/public/web/WebSecurityPolicy.h" 104#include "third_party/WebKit/public/web/WebSharedWorkerRepository.h" 105#include "third_party/WebKit/public/web/WebView.h" 106#include "ui/base/layout.h" 107#include "ui/base/ui_base_switches.h" 108#include "v8/include/v8.h" 109#include "webkit/child/worker_task_runner.h" 110#include "webkit/glue/webkit_glue.h" 111#include "webkit/renderer/appcache/appcache_frontend_impl.h" 112#include "webkit/renderer/compositor_bindings/web_external_bitmap_impl.h" 113 114#if defined(OS_WIN) 115#include <windows.h> 116#include <objbase.h> 117#include "base/win/scoped_com_initializer.h" 118#else 119// TODO(port) 120#include "base/memory/scoped_handle.h" 121#include "content/child/npapi/np_channel_base.h" 122#endif 123 124#if defined(OS_POSIX) 125#include "ipc/ipc_channel_posix.h" 126#endif 127 128#if defined(OS_ANDROID) 129#include <cpu-features.h> 130#include "content/renderer/android/synchronous_compositor_factory.h" 131#endif 132 133using base::ThreadRestrictions; 134using WebKit::WebDocument; 135using WebKit::WebFrame; 136using WebKit::WebNetworkStateNotifier; 137using WebKit::WebRuntimeFeatures; 138using WebKit::WebScriptController; 139using WebKit::WebSecurityPolicy; 140using WebKit::WebString; 141using WebKit::WebView; 142 143namespace content { 144 145namespace { 146 147const int64 kInitialIdleHandlerDelayMs = 1000; 148const int64 kShortIdleHandlerDelayMs = 1000; 149const int64 kLongIdleHandlerDelayMs = 30*1000; 150const int kIdleCPUUsageThresholdInPercents = 3; 151 152// Keep the global RenderThreadImpl in a TLS slot so it is impossible to access 153// incorrectly from the wrong thread. 154base::LazyInstance<base::ThreadLocalPointer<RenderThreadImpl> > 155 lazy_tls = LAZY_INSTANCE_INITIALIZER; 156 157class RenderViewZoomer : public RenderViewVisitor { 158 public: 159 RenderViewZoomer(const std::string& scheme, 160 const std::string& host, 161 double zoom_level) : scheme_(scheme), 162 host_(host), 163 zoom_level_(zoom_level) { 164 } 165 166 virtual bool Visit(RenderView* render_view) OVERRIDE { 167 WebView* webview = render_view->GetWebView(); 168 WebDocument document = webview->mainFrame()->document(); 169 170 // Don't set zoom level for full-page plugin since they don't use the same 171 // zoom settings. 172 if (document.isPluginDocument()) 173 return true; 174 GURL url(document.url()); 175 // Empty scheme works as wildcard that matches any scheme, 176 if ((net::GetHostOrSpecFromURL(url) == host_) && 177 (scheme_.empty() || scheme_ == url.scheme())) { 178 webview->setZoomLevel(false, zoom_level_); 179 } 180 return true; 181 } 182 183 private: 184 const std::string scheme_; 185 const std::string host_; 186 const double zoom_level_; 187 188 DISALLOW_COPY_AND_ASSIGN(RenderViewZoomer); 189}; 190 191std::string HostToCustomHistogramSuffix(const std::string& host) { 192 if (host == "mail.google.com") 193 return ".gmail"; 194 if (host == "docs.google.com" || host == "drive.google.com") 195 return ".docs"; 196 if (host == "plus.google.com") 197 return ".plus"; 198 return std::string(); 199} 200 201void* CreateHistogram( 202 const char *name, int min, int max, size_t buckets) { 203 if (min <= 0) 204 min = 1; 205 std::string histogram_name; 206 RenderThreadImpl* render_thread_impl = RenderThreadImpl::current(); 207 if (render_thread_impl) { // Can be null in tests. 208 histogram_name = render_thread_impl-> 209 histogram_customizer()->ConvertToCustomHistogramName(name); 210 } else { 211 histogram_name = std::string(name); 212 } 213 base::HistogramBase* histogram = base::Histogram::FactoryGet( 214 histogram_name, min, max, buckets, 215 base::Histogram::kUmaTargetedHistogramFlag); 216 return histogram; 217} 218 219void AddHistogramSample(void* hist, int sample) { 220 base::Histogram* histogram = static_cast<base::Histogram*>(hist); 221 histogram->Add(sample); 222} 223 224scoped_ptr<base::SharedMemory> AllocateSharedMemoryFunction(size_t size) { 225 return RenderThreadImpl::Get()->HostAllocateSharedMemoryBuffer(size); 226} 227 228void EnableWebCoreLogChannels(const std::string& channels) { 229 if (channels.empty()) 230 return; 231 base::StringTokenizer t(channels, ", "); 232 while (t.GetNext()) 233 WebKit::enableLogChannel(t.token().c_str()); 234} 235 236} // namespace 237 238class RenderThreadImpl::GpuVDAContextLostCallback 239 : public WebKit::WebGraphicsContext3D::WebGraphicsContextLostCallback { 240 public: 241 GpuVDAContextLostCallback() 242 : main_message_loop_(base::MessageLoopProxy::current()) {} 243 virtual ~GpuVDAContextLostCallback() {} 244 virtual void onContextLost() { 245 main_message_loop_->PostTask(FROM_HERE, base::Bind( 246 &RenderThreadImpl::OnGpuVDAContextLoss)); 247 } 248 249 private: 250 scoped_refptr<base::MessageLoopProxy> main_message_loop_; 251}; 252 253RenderThreadImpl::HistogramCustomizer::HistogramCustomizer() { 254 custom_histograms_.insert("V8.MemoryExternalFragmentationTotal"); 255 custom_histograms_.insert("V8.MemoryHeapSampleTotalCommitted"); 256 custom_histograms_.insert("V8.MemoryHeapSampleTotalUsed"); 257} 258 259RenderThreadImpl::HistogramCustomizer::~HistogramCustomizer() {} 260 261void RenderThreadImpl::HistogramCustomizer::RenderViewNavigatedToHost( 262 const std::string& host, size_t view_count) { 263 if (CommandLine::ForCurrentProcess()->HasSwitch( 264 switches::kDisableHistogramCustomizer)) { 265 return; 266 } 267 // Check if all RenderViews are displaying a page from the same host. If there 268 // is only one RenderView, the common host is this view's host. If there are 269 // many, check if this one shares the common host of the other 270 // RenderViews. It's ok to not detect some cases where the RenderViews share a 271 // common host. This information is only used for producing custom histograms. 272 if (view_count == 1) 273 SetCommonHost(host); 274 else if (host != common_host_) 275 SetCommonHost(std::string()); 276} 277 278std::string RenderThreadImpl::HistogramCustomizer::ConvertToCustomHistogramName( 279 const char* histogram_name) const { 280 std::string name(histogram_name); 281 if (!common_host_histogram_suffix_.empty() && 282 custom_histograms_.find(name) != custom_histograms_.end()) 283 name += common_host_histogram_suffix_; 284 return name; 285} 286 287void RenderThreadImpl::HistogramCustomizer::SetCommonHost( 288 const std::string& host) { 289 if (host != common_host_) { 290 common_host_ = host; 291 common_host_histogram_suffix_ = HostToCustomHistogramSuffix(host); 292 v8::V8::SetCreateHistogramFunction(CreateHistogram); 293 } 294} 295 296RenderThreadImpl* RenderThreadImpl::current() { 297 return lazy_tls.Pointer()->Get(); 298} 299 300// When we run plugins in process, we actually run them on the render thread, 301// which means that we need to make the render thread pump UI events. 302RenderThreadImpl::RenderThreadImpl() { 303 Init(); 304} 305 306RenderThreadImpl::RenderThreadImpl(const std::string& channel_name) 307 : ChildThread(channel_name) { 308 Init(); 309} 310 311void RenderThreadImpl::Init() { 312 TRACE_EVENT_BEGIN_ETW("RenderThreadImpl::Init", 0, ""); 313 314 base::debug::TraceLog::GetInstance()->SetThreadSortIndex( 315 base::PlatformThread::CurrentId(), 316 kTraceEventRendererMainThreadSortIndex); 317 318 v8::V8::SetCounterFunction(base::StatsTable::FindLocation); 319 v8::V8::SetCreateHistogramFunction(CreateHistogram); 320 v8::V8::SetAddHistogramSampleFunction(AddHistogramSample); 321 322#if defined(OS_MACOSX) || defined(OS_ANDROID) 323 // On Mac and Android, the select popups are rendered by the browser. 324 WebKit::WebView::setUseExternalPopupMenus(true); 325#endif 326 327 lazy_tls.Pointer()->Set(this); 328 329#if defined(OS_WIN) 330 // If you are running plugins in this thread you need COM active but in 331 // the normal case you don't. 332 if (RenderProcessImpl::InProcessPlugins()) 333 initialize_com_.reset(new base::win::ScopedCOMInitializer()); 334#endif 335 336 // Register this object as the main thread. 337 ChildProcess::current()->set_main_thread(this); 338 339 // In single process the single process is all there is. 340 suspend_webkit_shared_timer_ = true; 341 notify_webkit_of_modal_loop_ = true; 342 widget_count_ = 0; 343 hidden_widget_count_ = 0; 344 idle_notification_delay_in_ms_ = kInitialIdleHandlerDelayMs; 345 idle_notifications_to_skip_ = 0; 346 layout_test_mode_ = false; 347 shutdown_event_ = NULL; 348 349 appcache_dispatcher_.reset( 350 new AppCacheDispatcher(Get(), new appcache::AppCacheFrontendImpl())); 351 dom_storage_dispatcher_.reset(new DomStorageDispatcher()); 352 main_thread_indexed_db_dispatcher_.reset(new IndexedDBDispatcher( 353 thread_safe_sender())); 354 355 media_stream_center_ = NULL; 356 357 db_message_filter_ = new DBMessageFilter(); 358 AddFilter(db_message_filter_.get()); 359 360#if defined(ENABLE_WEBRTC) 361 peer_connection_tracker_.reset(new PeerConnectionTracker()); 362 AddObserver(peer_connection_tracker_.get()); 363 364 p2p_socket_dispatcher_ = 365 new P2PSocketDispatcher(GetIOMessageLoopProxy().get()); 366 AddFilter(p2p_socket_dispatcher_.get()); 367 368 webrtc_identity_service_.reset(new WebRTCIdentityService()); 369#endif // defined(ENABLE_WEBRTC) 370 vc_manager_ = new VideoCaptureImplManager(); 371 AddFilter(vc_manager_->video_capture_message_filter()); 372 373 audio_input_message_filter_ = 374 new AudioInputMessageFilter(GetIOMessageLoopProxy()); 375 AddFilter(audio_input_message_filter_.get()); 376 377 audio_message_filter_ = new AudioMessageFilter(GetIOMessageLoopProxy()); 378 AddFilter(audio_message_filter_.get()); 379 380 midi_message_filter_ = new MIDIMessageFilter(GetIOMessageLoopProxy()); 381 AddFilter(midi_message_filter_.get()); 382 383 AddFilter(new IndexedDBMessageFilter(thread_safe_sender())); 384 385 GetContentClient()->renderer()->RenderThreadStarted(); 386 387 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 388 if (command_line.HasSwitch(switches::kEnableGpuBenchmarking)) 389 RegisterExtension(GpuBenchmarkingExtension::Get()); 390 391#if defined(USE_TCMALLOC) && (defined(OS_LINUX) || defined(OS_ANDROID)) 392 if (command_line.HasSwitch(switches::kEnableMemoryBenchmarking)) 393 RegisterExtension(MemoryBenchmarkingExtension::Get()); 394#endif // USE_TCMALLOC 395 396 if (command_line.HasSwitch(switches::kEnableSkiaBenchmarking)) { 397 LOG(WARNING) << "Enabling unsafe Skia benchmarking extension."; 398 RegisterExtension(SkiaBenchmarkingExtension::Get()); 399 } 400 401 context_lost_cb_.reset(new GpuVDAContextLostCallback()); 402 403 // Note that under Linux, the media library will normally already have 404 // been initialized by the Zygote before this instance became a Renderer. 405 base::FilePath media_path; 406 PathService::Get(DIR_MEDIA_LIBS, &media_path); 407 if (!media_path.empty()) 408 media::InitializeMediaLibrary(media_path); 409 410 memory_pressure_listener_.reset(new base::MemoryPressureListener( 411 base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this)))); 412 413 TRACE_EVENT_END_ETW("RenderThreadImpl::Init", 0, ""); 414} 415 416RenderThreadImpl::~RenderThreadImpl() { 417} 418 419void RenderThreadImpl::Shutdown() { 420 FOR_EACH_OBSERVER( 421 RenderProcessObserver, observers_, OnRenderProcessShutdown()); 422 423 ChildThread::Shutdown(); 424 425 // Wait for all databases to be closed. 426 if (web_database_observer_impl_) 427 web_database_observer_impl_->WaitForAllDatabasesToClose(); 428 429 // Shutdown in reverse of the initialization order. 430 if (devtools_agent_message_filter_.get()) { 431 RemoveFilter(devtools_agent_message_filter_.get()); 432 devtools_agent_message_filter_ = NULL; 433 } 434 435 RemoveFilter(audio_input_message_filter_.get()); 436 audio_input_message_filter_ = NULL; 437 438 RemoveFilter(audio_message_filter_.get()); 439 audio_message_filter_ = NULL; 440 441 RemoveFilter(vc_manager_->video_capture_message_filter()); 442 443 RemoveFilter(db_message_filter_.get()); 444 db_message_filter_ = NULL; 445 446 // Shutdown the file thread if it's running. 447 if (file_thread_) 448 file_thread_->Stop(); 449 450 if (compositor_output_surface_filter_.get()) { 451 RemoveFilter(compositor_output_surface_filter_.get()); 452 compositor_output_surface_filter_ = NULL; 453 } 454 455 compositor_thread_.reset(); 456 input_handler_manager_.reset(); 457 if (input_event_filter_.get()) { 458 RemoveFilter(input_event_filter_.get()); 459 input_event_filter_ = NULL; 460 } 461 462 if (webkit_platform_support_) 463 WebKit::shutdown(); 464 465 lazy_tls.Pointer()->Set(NULL); 466 467 // TODO(port) 468#if defined(OS_WIN) 469 // Clean up plugin channels before this thread goes away. 470 NPChannelBase::CleanupChannels(); 471#endif 472 473 // Leak shared contexts on other threads, as we can not get to the correct 474 // thread to destroy them. 475 if (shared_contexts_compositor_thread_.get()) 476 shared_contexts_compositor_thread_->set_leak_on_destroy(); 477} 478 479bool RenderThreadImpl::Send(IPC::Message* msg) { 480 // Certain synchronous messages cannot always be processed synchronously by 481 // the browser, e.g., Chrome frame communicating with the embedding browser. 482 // This could cause a complete hang of Chrome if a windowed plug-in is trying 483 // to communicate with the renderer thread since the browser's UI thread 484 // could be stuck (within a Windows API call) trying to synchronously 485 // communicate with the plug-in. The remedy is to pump messages on this 486 // thread while the browser is processing this request. This creates an 487 // opportunity for re-entrancy into WebKit, so we need to take care to disable 488 // callbacks, timers, and pending network loads that could trigger such 489 // callbacks. 490 bool pumping_events = false; 491 if (msg->is_sync()) { 492 if (msg->is_caller_pumping_messages()) { 493 pumping_events = true; 494 } else { 495 if ((msg->type() == ViewHostMsg_GetCookies::ID || 496 msg->type() == ViewHostMsg_GetRawCookies::ID || 497 msg->type() == ViewHostMsg_CookiesEnabled::ID) && 498 GetContentClient()->renderer()-> 499 ShouldPumpEventsDuringCookieMessage()) { 500 pumping_events = true; 501 } 502 } 503 } 504 505 bool suspend_webkit_shared_timer = true; // default value 506 std::swap(suspend_webkit_shared_timer, suspend_webkit_shared_timer_); 507 508 bool notify_webkit_of_modal_loop = true; // default value 509 std::swap(notify_webkit_of_modal_loop, notify_webkit_of_modal_loop_); 510 511 int render_view_id = MSG_ROUTING_NONE; 512 513 if (pumping_events) { 514 if (suspend_webkit_shared_timer) 515 webkit_platform_support_->SuspendSharedTimer(); 516 517 if (notify_webkit_of_modal_loop) 518 WebView::willEnterModalLoop(); 519 520 RenderViewImpl* render_view = 521 RenderViewImpl::FromRoutingID(msg->routing_id()); 522 if (render_view) { 523 render_view_id = msg->routing_id(); 524 PluginChannelHost::Broadcast( 525 new PluginMsg_SignalModalDialogEvent(render_view_id)); 526 } 527 } 528 529 bool rv = ChildThread::Send(msg); 530 531 if (pumping_events) { 532 if (render_view_id != MSG_ROUTING_NONE) { 533 PluginChannelHost::Broadcast( 534 new PluginMsg_ResetModalDialogEvent(render_view_id)); 535 } 536 537 if (notify_webkit_of_modal_loop) 538 WebView::didExitModalLoop(); 539 540 if (suspend_webkit_shared_timer) 541 webkit_platform_support_->ResumeSharedTimer(); 542 } 543 544 return rv; 545} 546 547base::MessageLoop* RenderThreadImpl::GetMessageLoop() { 548 return message_loop(); 549} 550 551IPC::SyncChannel* RenderThreadImpl::GetChannel() { 552 return channel(); 553} 554 555std::string RenderThreadImpl::GetLocale() { 556 // The browser process should have passed the locale to the renderer via the 557 // --lang command line flag. 558 const CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess(); 559 const std::string& lang = 560 parsed_command_line.GetSwitchValueASCII(switches::kLang); 561 DCHECK(!lang.empty()); 562 return lang; 563} 564 565IPC::SyncMessageFilter* RenderThreadImpl::GetSyncMessageFilter() { 566 return sync_message_filter(); 567} 568 569scoped_refptr<base::MessageLoopProxy> 570 RenderThreadImpl::GetIOMessageLoopProxy() { 571 return ChildProcess::current()->io_message_loop_proxy(); 572} 573 574void RenderThreadImpl::AddRoute(int32 routing_id, IPC::Listener* listener) { 575 widget_count_++; 576 return ChildThread::AddRoute(routing_id, listener); 577} 578 579void RenderThreadImpl::RemoveRoute(int32 routing_id) { 580 widget_count_--; 581 return ChildThread::RemoveRoute(routing_id); 582} 583 584int RenderThreadImpl::GenerateRoutingID() { 585 int routing_id = MSG_ROUTING_NONE; 586 Send(new ViewHostMsg_GenerateRoutingID(&routing_id)); 587 return routing_id; 588} 589 590void RenderThreadImpl::AddFilter(IPC::ChannelProxy::MessageFilter* filter) { 591 channel()->AddFilter(filter); 592} 593 594void RenderThreadImpl::RemoveFilter(IPC::ChannelProxy::MessageFilter* filter) { 595 channel()->RemoveFilter(filter); 596} 597 598void RenderThreadImpl::SetOutgoingMessageFilter( 599 IPC::ChannelProxy::OutgoingMessageFilter* filter) { 600} 601 602void RenderThreadImpl::AddObserver(RenderProcessObserver* observer) { 603 observers_.AddObserver(observer); 604} 605 606void RenderThreadImpl::RemoveObserver(RenderProcessObserver* observer) { 607 observers_.RemoveObserver(observer); 608} 609 610void RenderThreadImpl::SetResourceDispatcherDelegate( 611 ResourceDispatcherDelegate* delegate) { 612 resource_dispatcher()->set_delegate(delegate); 613} 614 615void RenderThreadImpl::WidgetHidden() { 616 DCHECK(hidden_widget_count_ < widget_count_); 617 hidden_widget_count_++; 618 619 RenderProcessVisibilityManager* manager = 620 RenderProcessVisibilityManager::GetInstance(); 621 manager->WidgetVisibilityChanged(false); 622 623 if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) { 624 return; 625 } 626 627 if (widget_count_ && hidden_widget_count_ == widget_count_) 628 ScheduleIdleHandler(kInitialIdleHandlerDelayMs); 629} 630 631void RenderThreadImpl::WidgetRestored() { 632 DCHECK_GT(hidden_widget_count_, 0); 633 hidden_widget_count_--; 634 635 RenderProcessVisibilityManager* manager = 636 RenderProcessVisibilityManager::GetInstance(); 637 manager->WidgetVisibilityChanged(true); 638 639 if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) { 640 return; 641 } 642 643 ScheduleIdleHandler(kLongIdleHandlerDelayMs); 644} 645 646void RenderThreadImpl::EnsureWebKitInitialized() { 647 if (webkit_platform_support_) 648 return; 649 650 webkit_platform_support_.reset(new RendererWebKitPlatformSupportImpl); 651 WebKit::initialize(webkit_platform_support_.get()); 652 WebKit::setSharedWorkerRepository( 653 webkit_platform_support_.get()->sharedWorkerRepository()); 654 655 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 656 657 bool enable = command_line.HasSwitch(switches::kEnableThreadedCompositing); 658 if (enable) { 659#if defined(OS_ANDROID) 660 if (SynchronousCompositorFactory* factory = 661 SynchronousCompositorFactory::GetInstance()) 662 compositor_message_loop_proxy_ = 663 factory->GetCompositorMessageLoop(); 664#endif 665 if (!compositor_message_loop_proxy_.get()) { 666 compositor_thread_.reset(new base::Thread("Compositor")); 667 compositor_thread_->Start(); 668#if defined(OS_ANDROID) 669 compositor_thread_->SetPriority(base::kThreadPriority_Display); 670#endif 671 compositor_message_loop_proxy_ = 672 compositor_thread_->message_loop_proxy(); 673 compositor_message_loop_proxy_->PostTask( 674 FROM_HERE, 675 base::Bind(base::IgnoreResult(&ThreadRestrictions::SetIOAllowed), 676 false)); 677 } 678 679 InputHandlerManagerClient* input_handler_manager_client = NULL; 680#if defined(OS_ANDROID) 681 if (SynchronousCompositorFactory* factory = 682 SynchronousCompositorFactory::GetInstance()) { 683 input_handler_manager_client = factory->GetInputHandlerManagerClient(); 684 } 685#endif 686 if (!input_handler_manager_client) { 687 input_event_filter_ = 688 new InputEventFilter(this, compositor_message_loop_proxy_); 689 AddFilter(input_event_filter_.get()); 690 input_handler_manager_client = input_event_filter_.get(); 691 } 692 input_handler_manager_.reset( 693 new InputHandlerManager(compositor_message_loop_proxy_, 694 input_handler_manager_client)); 695 } 696 697 scoped_refptr<base::MessageLoopProxy> output_surface_loop; 698 if (enable) 699 output_surface_loop = compositor_message_loop_proxy_; 700 else 701 output_surface_loop = base::MessageLoopProxy::current(); 702 703 compositor_output_surface_filter_ = 704 CompositorOutputSurface::CreateFilter(output_surface_loop.get()); 705 AddFilter(compositor_output_surface_filter_.get()); 706 707 WebScriptController::enableV8SingleThreadMode(); 708 709 RenderThreadImpl::RegisterSchemes(); 710 711 EnableWebCoreLogChannels( 712 command_line.GetSwitchValueASCII(switches::kWebCoreLogChannels)); 713 714 web_database_observer_impl_.reset( 715 new WebDatabaseObserverImpl(sync_message_filter())); 716 WebKit::WebDatabase::setObserver(web_database_observer_impl_.get()); 717 718 SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line); 719 720 if (!media::IsMediaLibraryInitialized()) { 721 WebRuntimeFeatures::enableMediaPlayer(false); 722 WebRuntimeFeatures::enableWebAudio(false); 723 } 724 725 FOR_EACH_OBSERVER(RenderProcessObserver, observers_, WebKitInitialized()); 726 727 devtools_agent_message_filter_ = new DevToolsAgentFilter(); 728 AddFilter(devtools_agent_message_filter_.get()); 729 730 if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) 731 ScheduleIdleHandler(kLongIdleHandlerDelayMs); 732 733 webkit::SetSharedMemoryAllocationFunction(AllocateSharedMemoryFunction); 734} 735 736void RenderThreadImpl::RegisterSchemes() { 737 // swappedout: pages should not be accessible, and should also 738 // be treated as empty documents that can commit synchronously. 739 WebString swappedout_scheme(ASCIIToUTF16(chrome::kSwappedOutScheme)); 740 WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(swappedout_scheme); 741 WebSecurityPolicy::registerURLSchemeAsEmptyDocument(swappedout_scheme); 742} 743 744void RenderThreadImpl::RecordUserMetrics(const std::string& action) { 745 Send(new ViewHostMsg_UserMetricsRecordAction(action)); 746} 747 748scoped_ptr<base::SharedMemory> 749 RenderThreadImpl::HostAllocateSharedMemoryBuffer(size_t size) { 750 if (size > static_cast<size_t>(std::numeric_limits<int>::max())) 751 return scoped_ptr<base::SharedMemory>(); 752 753 base::SharedMemoryHandle handle; 754 bool success; 755 IPC::Message* message = 756 new ChildProcessHostMsg_SyncAllocateSharedMemory(size, &handle); 757 758 // Allow calling this from the compositor thread. 759 if (base::MessageLoop::current() == message_loop()) 760 success = ChildThread::Send(message); 761 else 762 success = sync_message_filter()->Send(message); 763 764 if (!success) 765 return scoped_ptr<base::SharedMemory>(); 766 767 if (!base::SharedMemory::IsHandleValid(handle)) 768 return scoped_ptr<base::SharedMemory>(); 769 770 return scoped_ptr<base::SharedMemory>(new base::SharedMemory(handle, false)); 771} 772 773void RenderThreadImpl::RegisterExtension(v8::Extension* extension) { 774 WebScriptController::registerExtension(extension); 775} 776 777void RenderThreadImpl::ScheduleIdleHandler(int64 initial_delay_ms) { 778 idle_notification_delay_in_ms_ = initial_delay_ms; 779 idle_timer_.Stop(); 780 idle_timer_.Start(FROM_HERE, 781 base::TimeDelta::FromMilliseconds(initial_delay_ms), 782 this, &RenderThreadImpl::IdleHandler); 783} 784 785void RenderThreadImpl::IdleHandler() { 786 bool run_in_foreground_tab = (widget_count_ > hidden_widget_count_) && 787 GetContentClient()->renderer()-> 788 RunIdleHandlerWhenWidgetsHidden(); 789 if (run_in_foreground_tab) { 790 IdleHandlerInForegroundTab(); 791 return; 792 } 793 794 base::allocator::ReleaseFreeMemory(); 795 796 v8::V8::IdleNotification(); 797 798 // Schedule next invocation. 799 // Dampen the delay using the algorithm (if delay is in seconds): 800 // delay = delay + 1 / (delay + 2) 801 // Using floor(delay) has a dampening effect such as: 802 // 1s, 1, 1, 2, 2, 2, 2, 3, 3, ... 803 // If the delay is in milliseconds, the above formula is equivalent to: 804 // delay_ms / 1000 = delay_ms / 1000 + 1 / (delay_ms / 1000 + 2) 805 // which is equivalent to 806 // delay_ms = delay_ms + 1000*1000 / (delay_ms + 2000). 807 // Note that idle_notification_delay_in_ms_ would be reset to 808 // kInitialIdleHandlerDelayMs in RenderThreadImpl::WidgetHidden. 809 ScheduleIdleHandler(idle_notification_delay_in_ms_ + 810 1000000 / (idle_notification_delay_in_ms_ + 2000)); 811 812 FOR_EACH_OBSERVER(RenderProcessObserver, observers_, IdleNotification()); 813} 814 815void RenderThreadImpl::IdleHandlerInForegroundTab() { 816 // Increase the delay in the same way as in IdleHandler, 817 // but make it periodic by reseting it once it is too big. 818 int64 new_delay_ms = idle_notification_delay_in_ms_ + 819 1000000 / (idle_notification_delay_in_ms_ + 2000); 820 if (new_delay_ms >= kLongIdleHandlerDelayMs) 821 new_delay_ms = kShortIdleHandlerDelayMs; 822 823 if (idle_notifications_to_skip_ > 0) { 824 idle_notifications_to_skip_--; 825 } else { 826 int cpu_usage = 0; 827 Send(new ViewHostMsg_GetCPUUsage(&cpu_usage)); 828 // Idle notification hint roughly specifies the expected duration of the 829 // idle pause. We set it proportional to the idle timer delay. 830 int idle_hint = static_cast<int>(new_delay_ms / 10); 831 if (cpu_usage < kIdleCPUUsageThresholdInPercents) { 832 base::allocator::ReleaseFreeMemory(); 833 if (v8::V8::IdleNotification(idle_hint)) { 834 // V8 finished collecting garbage. 835 new_delay_ms = kLongIdleHandlerDelayMs; 836 } 837 } 838 } 839 ScheduleIdleHandler(new_delay_ms); 840} 841 842int64 RenderThreadImpl::GetIdleNotificationDelayInMs() const { 843 return idle_notification_delay_in_ms_; 844} 845 846void RenderThreadImpl::SetIdleNotificationDelayInMs( 847 int64 idle_notification_delay_in_ms) { 848 idle_notification_delay_in_ms_ = idle_notification_delay_in_ms; 849} 850 851void RenderThreadImpl::ToggleWebKitSharedTimer(bool suspend) { 852 if (suspend_webkit_shared_timer_) { 853 EnsureWebKitInitialized(); 854 if (suspend) { 855 webkit_platform_support_->SuspendSharedTimer(); 856 } else { 857 webkit_platform_support_->ResumeSharedTimer(); 858 } 859 } 860} 861 862void RenderThreadImpl::UpdateHistograms(int sequence_number) { 863 child_histogram_message_filter()->SendHistograms(sequence_number); 864} 865 866int RenderThreadImpl::PostTaskToAllWebWorkers(const base::Closure& closure) { 867 return webkit_glue::WorkerTaskRunner::Instance()->PostTaskToAllThreads( 868 closure); 869} 870 871bool RenderThreadImpl::ResolveProxy(const GURL& url, std::string* proxy_list) { 872 bool result = false; 873 Send(new ViewHostMsg_ResolveProxy(url, &result, proxy_list)); 874 return result; 875} 876 877void RenderThreadImpl::PostponeIdleNotification() { 878 idle_notifications_to_skip_ = 2; 879} 880 881scoped_refptr<RendererGpuVideoDecoderFactories> 882RenderThreadImpl::GetGpuFactories( 883 const scoped_refptr<base::MessageLoopProxy>& factories_loop) { 884 DCHECK(IsMainThread()); 885 886 const CommandLine* cmd_line = CommandLine::ForCurrentProcess(); 887 scoped_refptr<RendererGpuVideoDecoderFactories> gpu_factories; 888 WebGraphicsContext3DCommandBufferImpl* context3d = NULL; 889 if (!cmd_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) 890 context3d = GetGpuVDAContext3D(); 891 if (context3d) { 892 GpuChannelHost* gpu_channel_host = GetGpuChannel(); 893 if (gpu_channel_host) { 894 gpu_factories = new RendererGpuVideoDecoderFactories( 895 gpu_channel_host, factories_loop, context3d); 896 } 897 } 898 return gpu_factories; 899} 900 901/* static */ 902void RenderThreadImpl::OnGpuVDAContextLoss() { 903 RenderThreadImpl* self = RenderThreadImpl::current(); 904 DCHECK(self); 905 if (!self->gpu_vda_context3d_) 906 return; 907 if (self->compositor_message_loop_proxy().get()) { 908 self->compositor_message_loop_proxy() 909 ->DeleteSoon(FROM_HERE, self->gpu_vda_context3d_.release()); 910 } else { 911 self->gpu_vda_context3d_.reset(); 912 } 913} 914 915WebGraphicsContext3DCommandBufferImpl* 916RenderThreadImpl::GetGpuVDAContext3D() { 917 if (!gpu_vda_context3d_) { 918 gpu_vda_context3d_.reset( 919 WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext( 920 this, WebKit::WebGraphicsContext3D::Attributes(), 921 GURL("chrome://gpu/RenderThreadImpl::GetGpuVDAContext3D"))); 922 if (gpu_vda_context3d_) 923 gpu_vda_context3d_->setContextLostCallback(context_lost_cb_.get()); 924 } 925 return gpu_vda_context3d_.get(); 926} 927 928scoped_ptr<WebGraphicsContext3DCommandBufferImpl> 929RenderThreadImpl::CreateOffscreenContext3d() { 930 WebKit::WebGraphicsContext3D::Attributes attributes; 931 attributes.shareResources = true; 932 attributes.depth = false; 933 attributes.stencil = false; 934 attributes.antialias = false; 935 attributes.noAutomaticFlushes = true; 936 937 return make_scoped_ptr( 938 WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext( 939 this, 940 attributes, 941 GURL("chrome://gpu/RenderThreadImpl::CreateOffscreenContext3d"))); 942} 943 944scoped_refptr<cc::ContextProvider> 945RenderThreadImpl::OffscreenContextProviderForMainThread() { 946 DCHECK(IsMainThread()); 947 948#if defined(OS_ANDROID) 949 if (SynchronousCompositorFactory* factory = 950 SynchronousCompositorFactory::GetInstance()) { 951 return factory->GetOffscreenContextProviderForMainThread(); 952 } 953#endif 954 955 if (!shared_contexts_main_thread_.get() || 956 shared_contexts_main_thread_->DestroyedOnMainThread()) { 957 shared_contexts_main_thread_ = 958 ContextProviderCommandBuffer::Create( 959 base::Bind(&RenderThreadImpl::CreateOffscreenContext3d, 960 base::Unretained(this))); 961 if (shared_contexts_main_thread_.get() && 962 !shared_contexts_main_thread_->BindToCurrentThread()) 963 shared_contexts_main_thread_ = NULL; 964 } 965 return shared_contexts_main_thread_; 966} 967 968scoped_refptr<cc::ContextProvider> 969RenderThreadImpl::OffscreenContextProviderForCompositorThread() { 970 DCHECK(IsMainThread()); 971 972#if defined(OS_ANDROID) 973 if (SynchronousCompositorFactory* factory = 974 SynchronousCompositorFactory::GetInstance()) { 975 return factory->GetOffscreenContextProviderForCompositorThread(); 976 } 977#endif 978 979 if (!shared_contexts_compositor_thread_.get() || 980 shared_contexts_compositor_thread_->DestroyedOnMainThread()) { 981 shared_contexts_compositor_thread_ = 982 ContextProviderCommandBuffer::Create( 983 base::Bind(&RenderThreadImpl::CreateOffscreenContext3d, 984 base::Unretained(this))); 985 } 986 return shared_contexts_compositor_thread_; 987} 988 989AudioRendererMixerManager* RenderThreadImpl::GetAudioRendererMixerManager() { 990 if (!audio_renderer_mixer_manager_) { 991 audio_renderer_mixer_manager_.reset(new AudioRendererMixerManager( 992 GetAudioHardwareConfig())); 993 } 994 995 return audio_renderer_mixer_manager_.get(); 996} 997 998media::AudioHardwareConfig* RenderThreadImpl::GetAudioHardwareConfig() { 999 if (!audio_hardware_config_) { 1000 media::AudioParameters input_params; 1001 media::AudioParameters output_params; 1002 Send(new ViewHostMsg_GetAudioHardwareConfig( 1003 &input_params, &output_params)); 1004 1005 audio_hardware_config_.reset(new media::AudioHardwareConfig( 1006 input_params, output_params)); 1007 audio_message_filter_->SetAudioHardwareConfig(audio_hardware_config_.get()); 1008 } 1009 1010 return audio_hardware_config_.get(); 1011} 1012 1013#if defined(OS_WIN) 1014void RenderThreadImpl::PreCacheFontCharacters(const LOGFONT& log_font, 1015 const string16& str) { 1016 Send(new ViewHostMsg_PreCacheFontCharacters(log_font, str)); 1017} 1018 1019void RenderThreadImpl::PreCacheFont(const LOGFONT& log_font) { 1020 Send(new ChildProcessHostMsg_PreCacheFont(log_font)); 1021} 1022 1023void RenderThreadImpl::ReleaseCachedFonts() { 1024 Send(new ChildProcessHostMsg_ReleaseCachedFonts()); 1025} 1026 1027#endif // OS_WIN 1028 1029bool RenderThreadImpl::IsMainThread() { 1030 return !!current(); 1031} 1032 1033base::MessageLoop* RenderThreadImpl::GetMainLoop() { 1034 return message_loop(); 1035} 1036 1037scoped_refptr<base::MessageLoopProxy> RenderThreadImpl::GetIOLoopProxy() { 1038 return io_message_loop_proxy_; 1039} 1040 1041base::WaitableEvent* RenderThreadImpl::GetShutDownEvent() { 1042 return shutdown_event_; 1043} 1044 1045scoped_ptr<base::SharedMemory> RenderThreadImpl::AllocateSharedMemory( 1046 size_t size) { 1047 return scoped_ptr<base::SharedMemory>( 1048 HostAllocateSharedMemoryBuffer(size)); 1049} 1050 1051int32 RenderThreadImpl::CreateViewCommandBuffer( 1052 int32 surface_id, const GPUCreateCommandBufferConfig& init_params) { 1053 TRACE_EVENT1("gpu", 1054 "RenderThreadImpl::CreateViewCommandBuffer", 1055 "surface_id", 1056 surface_id); 1057 1058 int32 route_id = MSG_ROUTING_NONE; 1059 IPC::Message* message = new GpuHostMsg_CreateViewCommandBuffer( 1060 surface_id, 1061 init_params, 1062 &route_id); 1063 1064 // Allow calling this from the compositor thread. 1065 thread_safe_sender()->Send(message); 1066 1067 return route_id; 1068} 1069 1070void RenderThreadImpl::CreateImage( 1071 gfx::PluginWindowHandle window, 1072 int32 image_id, 1073 const CreateImageCallback& callback) { 1074 NOTREACHED(); 1075} 1076 1077void RenderThreadImpl::DeleteImage(int32 image_id, int32 sync_point) { 1078 NOTREACHED(); 1079} 1080 1081void RenderThreadImpl::DoNotSuspendWebKitSharedTimer() { 1082 suspend_webkit_shared_timer_ = false; 1083} 1084 1085void RenderThreadImpl::DoNotNotifyWebKitOfModalLoop() { 1086 notify_webkit_of_modal_loop_ = false; 1087} 1088 1089void RenderThreadImpl::OnSetZoomLevelForCurrentURL(const std::string& scheme, 1090 const std::string& host, 1091 double zoom_level) { 1092 RenderViewZoomer zoomer(scheme, host, zoom_level); 1093 RenderView::ForEach(&zoomer); 1094} 1095 1096bool RenderThreadImpl::OnControlMessageReceived(const IPC::Message& msg) { 1097 ObserverListBase<RenderProcessObserver>::Iterator it(observers_); 1098 RenderProcessObserver* observer; 1099 while ((observer = it.GetNext()) != NULL) { 1100 if (observer->OnControlMessageReceived(msg)) 1101 return true; 1102 } 1103 1104 // Some messages are handled by delegates. 1105 if (appcache_dispatcher_->OnMessageReceived(msg) || 1106 dom_storage_dispatcher_->OnMessageReceived(msg)) { 1107 return true; 1108 } 1109 1110 bool handled = true; 1111 IPC_BEGIN_MESSAGE_MAP(RenderThreadImpl, msg) 1112 IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevelForCurrentURL, 1113 OnSetZoomLevelForCurrentURL) 1114 // TODO(port): removed from render_messages_internal.h; 1115 // is there a new non-windows message I should add here? 1116 IPC_MESSAGE_HANDLER(ViewMsg_New, OnCreateNewView) 1117 IPC_MESSAGE_HANDLER(ViewMsg_PurgePluginListCache, OnPurgePluginListCache) 1118 IPC_MESSAGE_HANDLER(ViewMsg_NetworkStateChanged, OnNetworkStateChanged) 1119 IPC_MESSAGE_HANDLER(ViewMsg_TempCrashWithData, OnTempCrashWithData) 1120 IPC_MESSAGE_HANDLER(ViewMsg_SetWebKitSharedTimersSuspended, 1121 OnSetWebKitSharedTimersSuspended) 1122 IPC_MESSAGE_UNHANDLED(handled = false) 1123 IPC_END_MESSAGE_MAP() 1124 return handled; 1125} 1126 1127void RenderThreadImpl::OnCreateNewView(const ViewMsg_New_Params& params) { 1128 EnsureWebKitInitialized(); 1129 // When bringing in render_view, also bring in webkit's glue and jsbindings. 1130 RenderViewImpl::Create( 1131 params.opener_route_id, 1132 params.renderer_preferences, 1133 params.web_preferences, 1134 new SharedRenderViewCounter(0), 1135 params.view_id, 1136 params.main_frame_routing_id, 1137 params.surface_id, 1138 params.session_storage_namespace_id, 1139 params.frame_name, 1140 false, 1141 params.swapped_out, 1142 params.next_page_id, 1143 params.screen_info, 1144 params.accessibility_mode, 1145 params.allow_partial_swap); 1146} 1147 1148GpuChannelHost* RenderThreadImpl::EstablishGpuChannelSync( 1149 CauseForGpuLaunch cause_for_gpu_launch) { 1150 TRACE_EVENT0("gpu", "RenderThreadImpl::EstablishGpuChannelSync"); 1151 1152 if (gpu_channel_.get()) { 1153 // Do nothing if we already have a GPU channel or are already 1154 // establishing one. 1155 if (!gpu_channel_->IsLost()) 1156 return gpu_channel_.get(); 1157 1158 // Recreate the channel if it has been lost. 1159 gpu_channel_ = NULL; 1160 } 1161 1162 // Ask the browser for the channel name. 1163 int client_id = 0; 1164 IPC::ChannelHandle channel_handle; 1165 gpu::GPUInfo gpu_info; 1166 if (!Send(new GpuHostMsg_EstablishGpuChannel(cause_for_gpu_launch, 1167 &client_id, 1168 &channel_handle, 1169 &gpu_info)) || 1170#if defined(OS_POSIX) 1171 channel_handle.socket.fd == -1 || 1172#endif 1173 channel_handle.name.empty()) { 1174 // Otherwise cancel the connection. 1175 return NULL; 1176 } 1177 1178 GetContentClient()->SetGpuInfo(gpu_info); 1179 1180 // Cache some variables that are needed on the compositor thread for our 1181 // implementation of GpuChannelHostFactory. 1182 io_message_loop_proxy_ = ChildProcess::current()->io_message_loop_proxy(); 1183 shutdown_event_ = ChildProcess::current()->GetShutDownEvent(); 1184 1185 gpu_channel_ = GpuChannelHost::Create( 1186 this, 0, client_id, gpu_info, channel_handle); 1187 return gpu_channel_.get(); 1188} 1189 1190WebKit::WebMediaStreamCenter* RenderThreadImpl::CreateMediaStreamCenter( 1191 WebKit::WebMediaStreamCenterClient* client) { 1192#if defined(OS_ANDROID) 1193 if (CommandLine::ForCurrentProcess()->HasSwitch( 1194 switches::kDisableWebRTC)) 1195 return NULL; 1196#endif 1197 1198#if defined(ENABLE_WEBRTC) 1199 if (!media_stream_center_) { 1200 media_stream_center_ = GetContentClient()->renderer() 1201 ->OverrideCreateWebMediaStreamCenter(client); 1202 if (!media_stream_center_) { 1203 scoped_ptr<MediaStreamCenter> media_stream_center( 1204 new MediaStreamCenter(client, GetMediaStreamDependencyFactory())); 1205 AddObserver(media_stream_center.get()); 1206 media_stream_center_ = media_stream_center.release(); 1207 } 1208 } 1209#endif 1210 return media_stream_center_; 1211} 1212 1213MediaStreamDependencyFactory* 1214RenderThreadImpl::GetMediaStreamDependencyFactory() { 1215#if defined(ENABLE_WEBRTC) 1216 if (!media_stream_factory_) { 1217 media_stream_factory_.reset(new MediaStreamDependencyFactory( 1218 vc_manager_.get(), p2p_socket_dispatcher_.get())); 1219 } 1220#endif 1221 return media_stream_factory_.get(); 1222} 1223 1224GpuChannelHost* RenderThreadImpl::GetGpuChannel() { 1225 if (!gpu_channel_.get()) 1226 return NULL; 1227 1228 if (gpu_channel_->IsLost()) 1229 return NULL; 1230 1231 return gpu_channel_.get(); 1232} 1233 1234void RenderThreadImpl::OnPurgePluginListCache(bool reload_pages) { 1235 EnsureWebKitInitialized(); 1236 // The call below will cause a GetPlugins call with refresh=true, but at this 1237 // point we already know that the browser has refreshed its list, so disable 1238 // refresh temporarily to prevent each renderer process causing the list to be 1239 // regenerated. 1240 webkit_platform_support_->set_plugin_refresh_allowed(false); 1241 WebKit::resetPluginCache(reload_pages); 1242 webkit_platform_support_->set_plugin_refresh_allowed(true); 1243 1244 FOR_EACH_OBSERVER(RenderProcessObserver, observers_, PluginListChanged()); 1245} 1246 1247void RenderThreadImpl::OnNetworkStateChanged(bool online) { 1248 EnsureWebKitInitialized(); 1249 WebNetworkStateNotifier::setOnLine(online); 1250} 1251 1252void RenderThreadImpl::OnTempCrashWithData(const GURL& data) { 1253 GetContentClient()->SetActiveURL(data); 1254 CHECK(false); 1255} 1256 1257void RenderThreadImpl::OnSetWebKitSharedTimersSuspended(bool suspend) { 1258 ToggleWebKitSharedTimer(suspend); 1259} 1260 1261void RenderThreadImpl::OnMemoryPressure( 1262 base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level) { 1263 base::allocator::ReleaseFreeMemory(); 1264 1265 if (memory_pressure_level == 1266 base::MemoryPressureListener::MEMORY_PRESSURE_CRITICAL) { 1267 // Trigger full v8 garbage collection on critical memory notification. 1268 v8::V8::LowMemoryNotification(); 1269 // Clear the image cache. 1270 WebKit::WebImageCache::clear(); 1271 } else { 1272 // Otherwise trigger a couple of v8 GCs using IdleNotification. 1273 if (!v8::V8::IdleNotification()) 1274 v8::V8::IdleNotification(); 1275 } 1276} 1277 1278scoped_refptr<base::MessageLoopProxy> 1279RenderThreadImpl::GetFileThreadMessageLoopProxy() { 1280 DCHECK(message_loop() == base::MessageLoop::current()); 1281 if (!file_thread_) { 1282 file_thread_.reset(new base::Thread("Renderer::FILE")); 1283 file_thread_->Start(); 1284 } 1285 return file_thread_->message_loop_proxy(); 1286} 1287 1288scoped_refptr<base::MessageLoopProxy> 1289RenderThreadImpl::GetMediaThreadMessageLoopProxy() { 1290 DCHECK(message_loop() == base::MessageLoop::current()); 1291 if (!media_thread_) { 1292 media_thread_.reset(new base::Thread("Media")); 1293 media_thread_->Start(); 1294 } 1295 return media_thread_->message_loop_proxy(); 1296} 1297 1298void RenderThreadImpl::SetFlingCurveParameters( 1299 const std::vector<float>& new_touchpad, 1300 const std::vector<float>& new_touchscreen) { 1301 webkit_platform_support_->SetFlingCurveParameters(new_touchpad, 1302 new_touchscreen); 1303 1304} 1305 1306} // namespace content 1307