forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathrender_thread_impl.cc
1297 lines (1073 loc) · 43.4 KB
/
render_thread_impl.cc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// 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 <algorithm>
#include <limits>
#include <map>
#include <vector>
#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/metrics/field_trial.h"
#include "base/metrics/histogram.h"
#include "base/metrics/stats_table.h"
#include "base/path_service.h"
#include "base/shared_memory.h"
#include "base/string16.h"
#include "base/string_number_conversions.h" // Temporary
#include "base/threading/thread_local.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "content/common/appcache/appcache_dispatcher.h"
#include "content/common/child_histogram_message_filter.h"
#include "content/common/child_process_messages.h"
#include "content/common/database_messages.h"
#include "content/common/db_message_filter.h"
#include "content/common/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/gpu_messages.h"
#include "content/common/indexed_db/indexed_db_dispatcher.h"
#include "content/common/indexed_db/indexed_db_message_filter.h"
#include "content/common/npobject_util.h"
#include "content/common/plugin_messages.h"
#include "content/common/resource_dispatcher.h"
#include "content/common/resource_messages.h"
#include "content/common/view_messages.h"
#include "content/common/web_database_observer_impl.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/gpu/compositor_output_surface.h"
#include "content/renderer/gpu/gpu_benchmarking_extension.h"
#include "content/renderer/gpu/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/media_stream_dependency_factory.h"
#include "content/renderer/media/peer_connection_tracker.h"
#include "content/renderer/media/video_capture_impl_manager.h"
#include "content/renderer/media/video_capture_message_filter.h"
#include "content/renderer/memory_benchmarking_extension.h"
#include "content/renderer/p2p/socket_dispatcher.h"
#include "content/renderer/plugin_channel_host.h"
#include "content/renderer/render_process_impl.h"
#include "content/renderer/render_view_impl.h"
#include "content/renderer/renderer_webkitplatformsupport_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/base/media_switches.h"
#include "net/base/net_errors.h"
#include "net/base/net_util.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebColorName.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDatabase.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBFactory.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebNetworkStateNotifier.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebPopupMenu.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebRuntimeFeatures.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebScriptController.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityPolicy.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSharedWorkerRepository.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
#include "ui/base/layout.h"
#include "ui/base/ui_base_switches.h"
#include "v8/include/v8.h"
#include "webkit/glue/webkit_glue.h"
#if defined(OS_WIN)
#include <windows.h>
#include <objbase.h>
#include "base/win/scoped_com_initializer.h"
#else
// TODO(port)
#include "base/memory/scoped_handle.h"
#include "content/common/np_channel_base.h"
#endif
#if defined(OS_POSIX)
#include "ipc/ipc_channel_posix.h"
#endif
#if defined(ENABLE_WEBRTC)
#include "third_party/webrtc/system_wrappers/interface/event_tracer.h"
#endif
using WebKit::WebDocument;
using WebKit::WebFrame;
using WebKit::WebNetworkStateNotifier;
using WebKit::WebRuntimeFeatures;
using WebKit::WebScriptController;
using WebKit::WebSecurityPolicy;
using WebKit::WebString;
using WebKit::WebView;
namespace content {
namespace {
const int64 kInitialIdleHandlerDelayMs = 1000;
const int64 kShortIdleHandlerDelayMs = 1000;
const int64 kLongIdleHandlerDelayMs = 30*1000;
const int kIdleCPUUsageThresholdInPercents = 3;
// Keep the global RenderThreadImpl in a TLS slot so it is impossible to access
// incorrectly from the wrong thread.
base::LazyInstance<base::ThreadLocalPointer<RenderThreadImpl> >
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(false, 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 "";
}
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<base::Histogram*>(hist);
histogram->Add(sample);
}
#if defined(ENABLE_WEBRTC)
const unsigned char* GetCategoryEnabled(const char* name) {
return TRACE_EVENT_API_GET_CATEGORY_ENABLED(name);
}
void AddTraceEvent(char phase,
const unsigned char* category_enabled,
const char* name,
unsigned long long id,
int num_args,
const char** arg_names,
const unsigned char* arg_types,
const unsigned long long* arg_values,
unsigned char flags) {
TRACE_EVENT_API_ADD_TRACE_EVENT(phase, category_enabled, name, id, num_args,
arg_names, arg_types, arg_values, flags);
}
#endif
} // namespace
class RenderThreadImpl::GpuVDAContextLostCallback
: public WebKit::WebGraphicsContext3D::WebGraphicsContextLostCallback {
public:
GpuVDAContextLostCallback() {}
virtual ~GpuVDAContextLostCallback() {}
virtual void onContextLost() {
ChildThread::current()->message_loop()->PostTask(FROM_HERE, base::Bind(
&RenderThreadImpl::OnGpuVDAContextLoss));
}
};
class RenderThreadImpl::RendererContextProviderCommandBuffer
: public ContextProviderCommandBuffer {
public:
static scoped_refptr<RendererContextProviderCommandBuffer> Create() {
scoped_refptr<RendererContextProviderCommandBuffer> provider =
new RendererContextProviderCommandBuffer();
if (!provider->InitializeOnMainThread())
return NULL;
return provider;
}
protected:
virtual ~RendererContextProviderCommandBuffer() {}
virtual scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
CreateOffscreenContext3d() OVERRIDE {
RenderThreadImpl* self = RenderThreadImpl::current();
DCHECK(self);
return self->CreateOffscreenContext3d().Pass();
}
};
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, "");
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.
WebKit::WebView::setUseExternalPopupMenus(true);
#endif
lazy_tls.Pointer()->Set(this);
#if defined(OS_WIN)
// If you are running plugins in this thread you need COM active but in
// the normal case you don't.
if (RenderProcessImpl::InProcessPlugins())
initialize_com_.reset(new base::win::ScopedCOMInitializer());
#endif
// 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;
widget_count_ = 0;
hidden_widget_count_ = 0;
idle_notification_delay_in_ms_ = kInitialIdleHandlerDelayMs;
idle_notifications_to_skip_ = 0;
should_send_focus_ipcs_ = true;
short_circuit_size_updates_ = false;
skip_error_pages_ = false;
appcache_dispatcher_.reset(new AppCacheDispatcher(Get()));
dom_storage_dispatcher_.reset(new DomStorageDispatcher());
main_thread_indexed_db_dispatcher_.reset(new IndexedDBDispatcher());
media_stream_center_ = NULL;
db_message_filter_ = new DBMessageFilter();
AddFilter(db_message_filter_.get());
#if defined(ENABLE_WEBRTC)
webrtc::SetupEventTracer(&GetCategoryEnabled, &AddTraceEvent);
peer_connection_tracker_.reset(new PeerConnectionTracker());
AddObserver(peer_connection_tracker_.get());
p2p_socket_dispatcher_ = new P2PSocketDispatcher(GetIOMessageLoopProxy());
AddFilter(p2p_socket_dispatcher_);
#endif // defined(ENABLE_WEBRTC)
vc_manager_ = new VideoCaptureImplManager();
AddFilter(vc_manager_->video_capture_message_filter());
audio_input_message_filter_ =
new AudioInputMessageFilter(GetIOMessageLoopProxy());
AddFilter(audio_input_message_filter_.get());
audio_message_filter_ = new AudioMessageFilter(GetIOMessageLoopProxy());
AddFilter(audio_message_filter_.get());
AddFilter(new IndexedDBMessageFilter);
GetContentClient()->renderer()->RenderThreadStarted();
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
if (command_line.HasSwitch(switches::kEnableGpuBenchmarking))
RegisterExtension(GpuBenchmarkingExtension::Get());
if (command_line.HasSwitch(switches::kEnableMemoryBenchmarking))
RegisterExtension(MemoryBenchmarkingExtension::Get());
context_lost_cb_.reset(new GpuVDAContextLostCallback());
// 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);
TRACE_EVENT_END_ETW("RenderThreadImpl::Init", 0, "");
}
RenderThreadImpl::~RenderThreadImpl() {
FOR_EACH_OBSERVER(
RenderProcessObserver, observers_, OnRenderProcessShutdown());
// Wait for all databases to be closed.
if (web_database_observer_impl_.get())
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;
RemoveFilter(vc_manager_->video_capture_message_filter());
RemoveFilter(db_message_filter_.get());
db_message_filter_ = NULL;
// Shutdown the file thread if it's running.
if (file_thread_.get())
file_thread_->Stop();
if (compositor_output_surface_filter_.get()) {
RemoveFilter(compositor_output_surface_filter_.get());
compositor_output_surface_filter_ = NULL;
}
if (input_handler_manager_.get()) {
RemoveFilter(input_handler_manager_->GetMessageFilter());
input_handler_manager_.reset();
}
if (webkit_platform_support_.get())
WebKit::shutdown();
lazy_tls.Pointer()->Set(NULL);
// TODO(port)
#if defined(OS_WIN)
// Clean up plugin channels before this thread goes away.
NPChannelBase::CleanupChannels();
#endif
// Leak shared contexts on other threads, as we can not get to the correct
// thread to destroy them.
if (shared_contexts_compositor_thread_)
shared_contexts_compositor_thread_->set_leak_on_destroy();
}
bool RenderThreadImpl::Send(IPC::Message* msg) {
// Certain synchronous messages cannot always be processed synchronously by
// the browser, e.g., Chrome frame communicating with the embedding browser.
// 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;
} else {
if ((msg->type() == ViewHostMsg_GetCookies::ID ||
msg->type() == ViewHostMsg_GetRawCookies::ID ||
msg->type() == ViewHostMsg_CookiesEnabled::ID) &&
GetContentClient()->renderer()->
ShouldPumpEventsDuringCookieMessage()) {
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_);
int render_view_id = MSG_ROUTING_NONE;
if (pumping_events) {
if (suspend_webkit_shared_timer)
webkit_platform_support_->SuspendSharedTimer();
if (notify_webkit_of_modal_loop)
WebView::willEnterModalLoop();
RenderWidget* widget =
static_cast<RenderWidget*>(ResolveRoute(msg->routing_id()));
if (widget) {
render_view_id = widget->routing_id();
PluginChannelHost::Broadcast(
new PluginMsg_SignalModalDialogEvent(render_view_id));
}
}
bool rv = ChildThread::Send(msg);
if (pumping_events) {
if (render_view_id != MSG_ROUTING_NONE) {
PluginChannelHost::Broadcast(
new PluginMsg_ResetModalDialogEvent(render_view_id));
}
if (notify_webkit_of_modal_loop)
WebView::didExitModalLoop();
if (suspend_webkit_shared_timer)
webkit_platform_support_->ResumeSharedTimer();
}
return rv;
}
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<base::MessageLoopProxy>
RenderThreadImpl::GetIOMessageLoopProxy() {
return ChildProcess::current()->io_message_loop_proxy();
}
void RenderThreadImpl::AddRoute(int32 routing_id, IPC::Listener* listener) {
widget_count_++;
return ChildThread::AddRoute(routing_id, listener);
}
void RenderThreadImpl::RemoveRoute(int32 routing_id) {
widget_count_--;
return ChildThread::RemoveRoute(routing_id);
}
int RenderThreadImpl::GenerateRoutingID() {
int routing_id = MSG_ROUTING_NONE;
Send(new ViewHostMsg_GenerateRoutingID(&routing_id));
return routing_id;
}
void RenderThreadImpl::AddFilter(IPC::ChannelProxy::MessageFilter* filter) {
channel()->AddFilter(filter);
}
void RenderThreadImpl::RemoveFilter(IPC::ChannelProxy::MessageFilter* filter) {
channel()->RemoveFilter(filter);
}
void RenderThreadImpl::SetOutgoingMessageFilter(
IPC::ChannelProxy::OutgoingMessageFilter* 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::WidgetHidden() {
DCHECK(hidden_widget_count_ < widget_count_);
hidden_widget_count_++;
if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
return;
}
if (widget_count_ && hidden_widget_count_ == widget_count_)
ScheduleIdleHandler(kInitialIdleHandlerDelayMs);
}
void RenderThreadImpl::WidgetRestored() {
DCHECK_GT(hidden_widget_count_, 0);
hidden_widget_count_--;
if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
return;
}
ScheduleIdleHandler(kLongIdleHandlerDelayMs);
}
void RenderThreadImpl::EnsureWebKitInitialized() {
if (webkit_platform_support_.get())
return;
webkit_platform_support_.reset(new RendererWebKitPlatformSupportImpl);
WebKit::initialize(webkit_platform_support_.get());
WebKit::setSharedWorkerRepository(
webkit_platform_support_.get()->sharedWorkerRepository());
WebKit::setIDBFactory(
webkit_platform_support_.get()->idbFactory());
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
bool enable = command_line.HasSwitch(switches::kEnableThreadedCompositing);
if (enable) {
MessageLoop* override_loop =
GetContentClient()->renderer()->OverrideCompositorMessageLoop();
if (override_loop) {
compositor_message_loop_proxy_ = override_loop->message_loop_proxy();
} else {
compositor_thread_.reset(new base::Thread("Compositor"));
compositor_thread_->Start();
compositor_message_loop_proxy_ =
compositor_thread_->message_loop_proxy();
}
if (GetContentClient()->renderer()->ShouldCreateCompositorInputHandler()) {
input_handler_manager_.reset(
new InputHandlerManager(this, compositor_message_loop_proxy_));
AddFilter(input_handler_manager_->GetMessageFilter());
}
}
scoped_refptr<base::MessageLoopProxy> 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);
AddFilter(compositor_output_surface_filter_.get());
WebScriptController::enableV8SingleThreadMode();
RenderThreadImpl::RegisterSchemes();
webkit_glue::EnableWebCoreLogChannels(
command_line.GetSwitchValueASCII(switches::kWebCoreLogChannels));
web_database_observer_impl_.reset(
new WebDatabaseObserverImpl(sync_message_filter()));
WebKit::WebDatabase::setObserver(web_database_observer_impl_.get());
WebRuntimeFeatures::enableSockets(
!command_line.HasSwitch(switches::kDisableWebSockets));
WebRuntimeFeatures::enableDatabase(
!command_line.HasSwitch(switches::kDisableDatabases));
WebRuntimeFeatures::enableDataTransferItems(
!command_line.HasSwitch(switches::kDisableDataTransferItems));
WebRuntimeFeatures::enableApplicationCache(
!command_line.HasSwitch(switches::kDisableApplicationCache));
WebRuntimeFeatures::enableNotifications(
!command_line.HasSwitch(switches::kDisableDesktopNotifications));
WebRuntimeFeatures::enableLocalStorage(
!command_line.HasSwitch(switches::kDisableLocalStorage));
WebRuntimeFeatures::enableSessionStorage(
!command_line.HasSwitch(switches::kDisableSessionStorage));
WebRuntimeFeatures::enableIndexedDatabase(true);
WebRuntimeFeatures::enableGeolocation(
!command_line.HasSwitch(switches::kDisableGeolocation));
WebKit::WebRuntimeFeatures::enableMediaSource(
!command_line.HasSwitch(switches::kDisableMediaSource));
WebRuntimeFeatures::enableMediaPlayer(
media::IsMediaLibraryInitialized());
#if defined(OS_ANDROID)
WebKit::WebRuntimeFeatures::enableMediaStream(
!command_line.HasSwitch(switches::kDisableWebRTC));
WebKit::WebRuntimeFeatures::enablePeerConnection(
!command_line.HasSwitch(switches::kDisableWebRTC));
#else
WebKit::WebRuntimeFeatures::enableMediaStream(true);
WebKit::WebRuntimeFeatures::enablePeerConnection(true);
#endif
WebKit::WebRuntimeFeatures::enableFullScreenAPI(
!command_line.HasSwitch(switches::kDisableFullScreen));
WebKit::WebRuntimeFeatures::enableEncryptedMedia(
!command_line.HasSwitch(switches::kDisableEncryptedMedia));
#if defined(OS_ANDROID)
WebRuntimeFeatures::enableWebAudio(
command_line.HasSwitch(switches::kEnableWebAudio) &&
media::IsMediaLibraryInitialized());
#else
WebRuntimeFeatures::enableWebAudio(
!command_line.HasSwitch(switches::kDisableWebAudio) &&
media::IsMediaLibraryInitialized());
#endif
WebRuntimeFeatures::enableDeviceMotion(
command_line.HasSwitch(switches::kEnableDeviceMotion));
WebRuntimeFeatures::enableDeviceOrientation(
!command_line.HasSwitch(switches::kDisableDeviceOrientation));
WebRuntimeFeatures::enableSpeechInput(
!command_line.HasSwitch(switches::kDisableSpeechInput));
#if defined(OS_ANDROID)
// Web Speech API Speech recognition is not implemented on Android yet.
WebRuntimeFeatures::enableScriptedSpeech(false);
#else
WebRuntimeFeatures::enableScriptedSpeech(true);
#endif
WebRuntimeFeatures::enableFileSystem(
!command_line.HasSwitch(switches::kDisableFileSystem));
WebRuntimeFeatures::enableJavaScriptI18NAPI(
!command_line.HasSwitch(switches::kDisableJavaScriptI18NAPI));
WebRuntimeFeatures::enableGamepad(true);
WebRuntimeFeatures::enableQuota(true);
WebRuntimeFeatures::enableShadowDOM(true);
if (command_line.HasSwitch(switches::kEnableExperimentalWebKitFeatures)) {
WebRuntimeFeatures::enableStyleScoped(true);
WebRuntimeFeatures::enableCustomDOMElements(true);
WebRuntimeFeatures::enableCSSExclusions(true);
WebRuntimeFeatures::enableExperimentalContentSecurityPolicyFeatures(true);
WebRuntimeFeatures::enableCSSRegions(true);
WebRuntimeFeatures::enableDialogElement(true);
WebRuntimeFeatures::enableFontLoadEvents(true);
}
WebRuntimeFeatures::enableSeamlessIFrames(
command_line.HasSwitch(switches::kEnableExperimentalWebKitFeatures));
FOR_EACH_OBSERVER(RenderProcessObserver, observers_, WebKitInitialized());
devtools_agent_message_filter_ = new DevToolsAgentFilter();
AddFilter(devtools_agent_message_filter_.get());
if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
ScheduleIdleHandler(kLongIdleHandlerDelayMs);
}
void RenderThreadImpl::RegisterSchemes() {
// swappedout: pages should not be accessible, and should also
// be treated as empty documents that can commit synchronously.
WebString swappedout_scheme(ASCIIToUTF16(chrome::kSwappedOutScheme));
WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(swappedout_scheme);
WebSecurityPolicy::registerURLSchemeAsEmptyDocument(swappedout_scheme);
}
void RenderThreadImpl::RecordUserMetrics(const std::string& action) {
Send(new ViewHostMsg_UserMetricsRecordAction(action));
}
scoped_ptr<base::SharedMemory>
RenderThreadImpl::HostAllocateSharedMemoryBuffer(size_t size) {
if (size > static_cast<size_t>(std::numeric_limits<int>::max()))
return scoped_ptr<base::SharedMemory>();
base::SharedMemoryHandle handle;
bool success;
IPC::Message* message =
new ChildProcessHostMsg_SyncAllocateSharedMemory(size, &handle);
// Allow calling this from the compositor thread.
if (MessageLoop::current() == message_loop())
success = ChildThread::Send(message);
else
success = sync_message_filter()->Send(message);
if (!success)
return scoped_ptr<base::SharedMemory>();
if (!base::SharedMemory::IsHandleValid(handle))
return scoped_ptr<base::SharedMemory>();
return scoped_ptr<base::SharedMemory>(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();
v8::V8::IdleNotification();
// 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.
ScheduleIdleHandler(idle_notification_delay_in_ms_ +
1000000 / (idle_notification_delay_in_ms_ + 2000));
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<int>(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::ToggleWebKitSharedTimer(bool suspend) {
if (suspend_webkit_shared_timer_) {
EnsureWebKitInitialized();
if (suspend) {
webkit_platform_support_->SuspendSharedTimer();
} else {
webkit_platform_support_->ResumeSharedTimer();
}
}
}
void RenderThreadImpl::UpdateHistograms(int sequence_number) {
child_histogram_message_filter()->SendHistograms(sequence_number);
}
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;
}
/* static */
void RenderThreadImpl::OnGpuVDAContextLoss() {
RenderThreadImpl* self = RenderThreadImpl::current();
DCHECK(self);
if (!self->gpu_vda_context3d_.get())
return;
if (self->compositor_message_loop_proxy()) {
self->compositor_message_loop_proxy()->DeleteSoon(
FROM_HERE, self->gpu_vda_context3d_.release());
} else {
self->gpu_vda_context3d_.reset();
}
}
WebGraphicsContext3DCommandBufferImpl*
RenderThreadImpl::GetGpuVDAContext3D() {
if (!gpu_vda_context3d_.get()) {
gpu_vda_context3d_.reset(
WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
this, WebKit::WebGraphicsContext3D::Attributes(),
GURL("chrome://gpu/RenderThreadImpl::GetGpuVDAContext3D")));
if (gpu_vda_context3d_.get())
gpu_vda_context3d_->setContextLostCallback(context_lost_cb_.get());
}
return gpu_vda_context3d_.get();
}
scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
RenderThreadImpl::CreateOffscreenContext3d() {
WebKit::WebGraphicsContext3D::Attributes attributes;
attributes.shareResources = true;
attributes.depth = false;
attributes.stencil = false;
attributes.antialias = false;
attributes.noAutomaticFlushes = true;
return make_scoped_ptr(
WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
this,
attributes,
GURL("chrome://gpu/RenderThreadImpl::CreateOffscreenContext3d")));
}
scoped_refptr<ContextProviderCommandBuffer>
RenderThreadImpl::OffscreenContextProviderForMainThread() {
DCHECK(IsMainThread());
if (!shared_contexts_main_thread_ ||
shared_contexts_main_thread_->DestroyedOnMainThread()) {
shared_contexts_main_thread_ =
RendererContextProviderCommandBuffer::Create();
if (shared_contexts_main_thread_ &&
!shared_contexts_main_thread_->BindToCurrentThread())
shared_contexts_main_thread_ = NULL;
}
return shared_contexts_main_thread_;
}
scoped_refptr<ContextProviderCommandBuffer>
RenderThreadImpl::OffscreenContextProviderForCompositorThread() {
DCHECK(IsMainThread());
if (!shared_contexts_compositor_thread_ ||
shared_contexts_compositor_thread_->DestroyedOnMainThread()) {
shared_contexts_compositor_thread_ =
RendererContextProviderCommandBuffer::Create();
}
return shared_contexts_compositor_thread_;
}
AudioRendererMixerManager* RenderThreadImpl::GetAudioRendererMixerManager() {
if (!audio_renderer_mixer_manager_.get()) {
audio_renderer_mixer_manager_.reset(new AudioRendererMixerManager(
GetAudioHardwareConfig()));
}
return audio_renderer_mixer_manager_.get();
}