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render_thread_impl.cc
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// 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/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/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/compositor_util.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/browser_plugin/old/browser_plugin_channel_manager.h"
#include "content/renderer/browser_plugin/old/browser_plugin_registry.h"
#include "content/renderer/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_thread.h"
#include "content/renderer/gpu/compositor_output_surface.h"
#include "content/renderer/gpu/gpu_benchmarking_extension.h"
#include "content/renderer/media/audio_hardware.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/video_capture_impl_manager.h"
#include "content/renderer/media/video_capture_message_filter.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/media.h"
#include "net/base/net_errors.h"
#include "net/base/net_util.h"
#include "third_party/WebKit/Source/Platform/chromium/public/Platform.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebCompositorSupport.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/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/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
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& host, double zoom_level)
: host_(host), zoom_level_(zoom_level) {
}
virtual bool Visit(RenderView* render_view) {
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;
if (net::GetHostOrSpecFromURL(GURL(document.url())) == host_)
webview->setZoomLevel(false, zoom_level_);
return true;
}
private:
std::string host_;
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::Histogram* 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);
}
} // 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));
}
};
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) {
// 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;
compositor_initialized_ = false;
appcache_dispatcher_.reset(new AppCacheDispatcher(Get()));
dom_storage_dispatcher_.reset(new DomStorageDispatcher());
main_thread_indexed_db_dispatcher_.reset(new IndexedDBDispatcher());
browser_plugin_registry_.reset(new old::BrowserPluginRegistry());
browser_plugin_channel_manager_.reset(
new old::BrowserPluginChannelManager());
AddObserver(browser_plugin_channel_manager_.get());
media_stream_center_ = NULL;
db_message_filter_ = new DBMessageFilter();
AddFilter(db_message_filter_.get());
#if defined(ENABLE_WEBRTC)
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();
AddFilter(audio_input_message_filter_.get());
audio_message_filter_ = new AudioMessageFilter();
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());
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.
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 (compositor_initialized_) {
WebKit::Platform::current()->compositorSupport()->shutdown();
compositor_initialized_ = false;
}
if (compositor_thread_.get()) {
RemoveFilter(compositor_thread_->GetMessageFilter());
compositor_thread_.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
}
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_);
gfx::NativeViewId host_window = 0;
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) {
host_window = widget->host_window();
PluginChannelHost::Broadcast(
new PluginMsg_SignalModalDialogEvent(host_window));
}
}
bool rv = ChildThread::Send(msg);
if (pumping_events) {
if (host_window) {
PluginChannelHost::Broadcast(
new PluginMsg_ResetModalDialogEvent(host_window));
}
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. In single process mode, this will return the
// wrong value. TODO(tc): Fix this for single process mode.
const CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess();
const std::string& lang =
parsed_command_line.GetSwitchValueASCII(switches::kLang);
DCHECK(!lang.empty() ||
(!parsed_command_line.HasSwitch(switches::kRendererProcess) &&
!parsed_command_line.HasSwitch(switches::kPluginProcess)));
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::WebCompositorSupport* compositor_support =
WebKit::Platform::current()->compositorSupport();
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
// TODO(fsamuel): Guests don't currently support threaded compositing.
// This should go away with the new design of the browser plugin.
// The new design can be tracked at: http://crbug.com/134492.
bool is_guest = CommandLine::ForCurrentProcess()->HasSwitch(
switches::kGuestRenderer);
bool enable = IsThreadedCompositingEnabled() && !is_guest;
if (enable) {
compositor_thread_.reset(new CompositorThread(this));
AddFilter(compositor_thread_->GetMessageFilter());
compositor_support->initialize(compositor_thread_->GetWebThread());
} else {
compositor_support->initialize(NULL);
}
compositor_initialized_ = true;
MessageLoop* output_surface_loop = enable ?
compositor_thread_->message_loop() :
MessageLoop::current();
compositor_output_surface_filter_ = CompositorOutputSurface::CreateFilter(
output_surface_loop->message_loop_proxy());
AddFilter(compositor_output_surface_filter_.get());
WebScriptController::enableV8SingleThreadMode();
RenderThreadImpl::RegisterSchemes();
webkit_glue::EnableWebCoreLogChannels(
command_line.GetSwitchValueASCII(switches::kWebCoreLogChannels));
if (CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDomAutomationController)) {
base::StringPiece extension = GetContentClient()->GetDataResource(
IDR_DOM_AUTOMATION_JS, ui::SCALE_FACTOR_NONE);
RegisterExtension(new v8::Extension(
"dom_automation.js", extension.data(), 0, NULL, extension.size()));
}
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());
WebKit::WebRuntimeFeatures::enableMediaStream(true);
WebKit::WebRuntimeFeatures::enablePeerConnection(true);
WebKit::WebRuntimeFeatures::enableDeprecatedPeerConnection(
command_line.HasSwitch(switches::kEnableDeprecatedPeerConnection));
WebKit::WebRuntimeFeatures::enableFullScreenAPI(
!command_line.HasSwitch(switches::kDisableFullScreen));
WebKit::WebRuntimeFeatures::enablePointerLock(true);
WebKit::WebRuntimeFeatures::enableEncryptedMedia(
command_line.HasSwitch(switches::kEnableEncryptedMedia));
#if defined(OS_ANDROID)
WebRuntimeFeatures::enableWebAudio(
command_line.HasSwitch(switches::kEnableWebAudio) &&
media::IsMediaLibraryInitialized());
#else
WebRuntimeFeatures::enableWebAudio(
!command_line.HasSwitch(switches::kDisableWebAudio) &&
media::IsMediaLibraryInitialized());
#endif
#if defined(OS_CHROMEOS)
WebRuntimeFeatures::enableTouch(true);
#else
WebRuntimeFeatures::enableTouch(
command_line.HasSwitch(switches::kEnableTouchEvents));
#endif
WebRuntimeFeatures::enableDeviceMotion(
command_line.HasSwitch(switches::kEnableDeviceMotion));
WebRuntimeFeatures::enableDeviceOrientation(
!command_line.HasSwitch(switches::kDisableDeviceOrientation));
WebRuntimeFeatures::enableSpeechInput(
!command_line.HasSwitch(switches::kDisableSpeechInput));
WebRuntimeFeatures::enableScriptedSpeech(
command_line.HasSwitch(switches::kEnableScriptedSpeech));
WebRuntimeFeatures::enableFileSystem(
!command_line.HasSwitch(switches::kDisableFileSystem));
WebRuntimeFeatures::enableJavaScriptI18NAPI(
!command_line.HasSwitch(switches::kDisableJavaScriptI18NAPI));
WebRuntimeFeatures::enableGamepad(true);
WebRuntimeFeatures::enableQuota(true);
WebRuntimeFeatures::enableShadowDOM(true);
WebRuntimeFeatures::enableStyleScoped(
command_line.HasSwitch(switches::kEnableExperimentalWebKitFeatures));
WebRuntimeFeatures::enableCSSExclusions(
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));
}
base::SharedMemoryHandle RenderThreadImpl::HostAllocateSharedMemoryBuffer(
uint32 buffer_size) {
base::SharedMemoryHandle mem_handle = base::SharedMemoryHandle();
Send(new ChildProcessHostMsg_SyncAllocateSharedMemory(
buffer_size, &mem_handle));
return mem_handle;
}
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);
}
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_thread()) {
self->compositor_thread()->GetWebThread()->message_loop()->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();
}
AudioRendererMixerManager* RenderThreadImpl::GetAudioRendererMixerManager() {
if (!audio_renderer_mixer_manager_.get()) {
audio_renderer_mixer_manager_.reset(new AudioRendererMixerManager(
audio_hardware::GetOutputSampleRate(),
audio_hardware::GetOutputBufferSize()));
}
return audio_renderer_mixer_manager_.get();
}
#if defined(OS_WIN)
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::IsWebFrameValid(WebKit::WebFrame* web_frame) {
if (!web_frame)
return false; // We must be shutting down.
RenderViewImpl* render_view = RenderViewImpl::FromWebView(web_frame->view());
if (!render_view)
return false; // We must be shutting down.
return true;
}
bool RenderThreadImpl::IsMainThread() {
return !!current();
}
bool RenderThreadImpl::IsIOThread() {
return MessageLoop::current() == ChildProcess::current()->io_message_loop();
}
MessageLoop* RenderThreadImpl::GetMainLoop() {
return message_loop();
}
scoped_refptr<base::MessageLoopProxy> RenderThreadImpl::GetIOLoopProxy() {
return ChildProcess::current()->io_message_loop_proxy();
}
base::WaitableEvent* RenderThreadImpl::GetShutDownEvent() {
return ChildProcess::current()->GetShutDownEvent();
}
scoped_ptr<base::SharedMemory> RenderThreadImpl::AllocateSharedMemory(
uint32 size) {
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));
}
int32 RenderThreadImpl::CreateViewCommandBuffer(
int32 surface_id, const GPUCreateCommandBufferConfig& init_params) {
TRACE_EVENT1("gpu",
"RenderThreadImpl::CreateViewCommandBuffer",
"surface_id",
surface_id);
int32 route_id = MSG_ROUTING_NONE;
IPC::Message* message = new GpuHostMsg_CreateViewCommandBuffer(
surface_id,
init_params,
&route_id);
// Allow calling this from the compositor thread.
if (MessageLoop::current() == message_loop())
ChildThread::Send(message);
else
sync_message_filter()->Send(message);
return route_id;
}
void RenderThreadImpl::CreateImage(
gfx::PluginWindowHandle window,
int32 image_id,
const CreateImageCallback& callback) {
NOTREACHED();
}
void RenderThreadImpl::DeleteImage(int32 image_id, int32 sync_point) {
NOTREACHED();
}
void RenderThreadImpl::DoNotSuspendWebKitSharedTimer() {
suspend_webkit_shared_timer_ = false;
}
void RenderThreadImpl::DoNotNotifyWebKitOfModalLoop() {
notify_webkit_of_modal_loop_ = false;
}
void RenderThreadImpl::OnSetZoomLevelForCurrentURL(const std::string& host,
double zoom_level) {
RenderViewZoomer zoomer(host, zoom_level);
RenderView::ForEach(&zoomer);
}
bool RenderThreadImpl::OnControlMessageReceived(const IPC::Message& msg) {
ObserverListBase<RenderProcessObserver>::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)) {
return true;
}
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(RenderThreadImpl, msg)
IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevelForCurrentURL,
OnSetZoomLevelForCurrentURL)
IPC_MESSAGE_HANDLER(ViewMsg_SetCSSColors, OnSetCSSColors)
// 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)