blob: 135bbd898cf0728078b795b3f4cc08516331d144 [file] [log] [blame]
// 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/lazy_instance.h"
#include "base/logging.h"
#include "base/memory/discardable_memory_allocator.h"
#include "base/memory/shared_memory.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram.h"
#include "base/path_service.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/string16.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_tokenizer.h"
#include "base/strings/sys_string_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/simple_thread.h"
#include "base/threading/thread_local.h"
#include "base/threading/thread_restrictions.h"
#include "base/trace_event/trace_event.h"
#include "base/values.h"
#include "cc/base/switches.h"
#include "cc/blink/web_external_bitmap_impl.h"
#include "cc/blink/web_layer_impl.h"
#include "cc/raster/task_graph_runner.h"
#include "components/scheduler/renderer/renderer_scheduler.h"
#include "content/child/appcache/appcache_dispatcher.h"
#include "content/child/appcache/appcache_frontend_impl.h"
#include "content/child/child_discardable_shared_memory_manager.h"
#include "content/child/child_gpu_memory_buffer_manager.h"
#include "content/child/child_histogram_message_filter.h"
#include "content/child/child_resource_message_filter.h"
#include "content/child/child_shared_bitmap_manager.h"
#include "content/child/content_child_helpers.h"
#include "content/child/db_message_filter.h"
#include "content/child/indexed_db/indexed_db_dispatcher.h"
#include "content/child/indexed_db/indexed_db_message_filter.h"
#include "content/child/npapi/npobject_util.h"
#include "content/child/plugin_messages.h"
#include "content/child/resource_dispatcher.h"
#include "content/child/resource_scheduling_filter.h"
#include "content/child/runtime_features.h"
#include "content/child/thread_safe_sender.h"
#include "content/child/web_database_observer_impl.h"
#include "content/child/worker_task_runner.h"
#include "content/common/child_process_messages.h"
#include "content/common/content_constants_internal.h"
#include "content/common/database_messages.h"
#include "content/common/dom_storage/dom_storage_messages.h"
#include "content/common/frame_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/gpu/gpu_process_launch_causes.h"
#include "content/common/render_frame_setup.mojom.h"
#include "content/common/resource_messages.h"
#include "content/common/view_messages.h"
#include "content/common/worker_messages.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_paths.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/mojo_channel_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/browser_plugin_manager.h"
#include "content/renderer/cache_storage/cache_storage_dispatcher.h"
#include "content/renderer/cache_storage/cache_storage_message_filter.h"
#include "content/renderer/devtools/devtools_agent_filter.h"
#include "content/renderer/devtools/v8_sampling_profiler.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_external_begin_frame_source.h"
#include "content/renderer/gpu/compositor_forwarding_message_filter.h"
#include "content/renderer/gpu/compositor_output_surface.h"
#include "content/renderer/input/input_event_filter.h"
#include "content/renderer/input/input_handler_manager.h"
#include "content/renderer/input/main_thread_input_event_filter.h"
#include "content/renderer/media/aec_dump_message_filter.h"
#include "content/renderer/media/audio_input_message_filter.h"
#include "content/renderer/media/audio_message_filter.h"
#include "content/renderer/media/audio_renderer_mixer_manager.h"
#include "content/renderer/media/media_stream_center.h"
#include "content/renderer/media/midi_message_filter.h"
#include "content/renderer/media/render_media_client.h"
#include "content/renderer/media/renderer_gpu_video_accelerator_factories.h"
#include "content/renderer/media/video_capture_impl_manager.h"
#include "content/renderer/media/video_capture_message_filter.h"
#include "content/renderer/net_info_helper.h"
#include "content/renderer/p2p/socket_dispatcher.h"
#include "content/renderer/render_frame_proxy.h"
#include "content/renderer/render_process_impl.h"
#include "content/renderer/render_view_impl.h"
#include "content/renderer/renderer_blink_platform_impl.h"
#include "content/renderer/scheduler/resource_dispatch_throttler.h"
#include "content/renderer/service_worker/embedded_worker_context_message_filter.h"
#include "content/renderer/service_worker/embedded_worker_dispatcher.h"
#include "content/renderer/shared_worker/embedded_shared_worker_stub.h"
#include "gin/public/debug.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/common/gles2_cmd_utils.h"
#include "ipc/ipc_channel_handle.h"
#include "ipc/ipc_platform_file.h"
#include "ipc/mojo/ipc_channel_mojo.h"
#include "media/base/audio_hardware_config.h"
#include "media/base/media.h"
#include "media/renderers/gpu_video_accelerator_factories.h"
#include "mojo/common/common_type_converters.h"
#include "net/base/net_errors.h"
#include "net/base/net_util.h"
#include "skia/ext/event_tracer_impl.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/WebThread.h"
#include "third_party/WebKit/public/web/WebCache.h"
#include "third_party/WebKit/public/web/WebColorName.h"
#include "third_party/WebKit/public/web/WebDatabase.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebImageCache.h"
#include "third_party/WebKit/public/web/WebKit.h"
#include "third_party/WebKit/public/web/WebNetworkStateNotifier.h"
#include "third_party/WebKit/public/web/WebPopupMenu.h"
#include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
#include "third_party/WebKit/public/web/WebScriptController.h"
#include "third_party/WebKit/public/web/WebSecurityPolicy.h"
#include "third_party/WebKit/public/web/WebView.h"
#include "third_party/icu/source/i18n/unicode/timezone.h"
#include "third_party/skia/include/core/SkGraphics.h"
#include "ui/base/layout.h"
#include "ui/base/ui_base_switches.h"
#include "v8/include/v8.h"
#if defined(OS_ANDROID)
#include <cpu-features.h>
#include "content/renderer/android/synchronous_compositor_factory.h"
#include "content/renderer/media/android/renderer_demuxer_android.h"
#endif
#if defined(OS_MACOSX)
#include "base/mac/mac_util.h"
#include "content/renderer/webscrollbarbehavior_impl_mac.h"
#endif
#if defined(OS_POSIX)
#include "ipc/ipc_channel_posix.h"
#endif
#if defined(OS_WIN)
#include <windows.h>
#include <objbase.h>
#else
// TODO(port)
#include "content/child/npapi/np_channel_base.h"
#endif
#if defined(ENABLE_PLUGINS)
#include "content/renderer/npapi/plugin_channel_host.h"
#endif
#if defined(ENABLE_WEBRTC)
#include "content/renderer/media/peer_connection_tracker.h"
#include "content/renderer/media/rtc_peer_connection_handler.h"
#include "content/renderer/media/webrtc/peer_connection_dependency_factory.h"
#include "content/renderer/media/webrtc_identity_service.h"
#endif
#ifdef ENABLE_VTUNE_JIT_INTERFACE
#include "v8/src/third_party/vtune/v8-vtune.h"
#endif
using base::ThreadRestrictions;
using blink::WebDocument;
using blink::WebFrame;
using blink::WebNetworkStateNotifier;
using blink::WebRuntimeFeatures;
using blink::WebScriptController;
using blink::WebSecurityPolicy;
using blink::WebString;
using blink::WebView;
namespace content {
namespace {
const int64 kInitialIdleHandlerDelayMs = 1000;
const int64 kLongIdleHandlerDelayMs = 30*1000;
#if defined(OS_ANDROID)
// On Android, resource messages can each take ~1.5ms to dispatch on the browser
// IO thread. Limiting the message rate to 3/frame at 60hz ensures that the
// induced work takes but a fraction (~1/4) of the overall frame budget.
const int kMaxResourceRequestsPerFlushWhenThrottled = 3;
#else
const int kMaxResourceRequestsPerFlushWhenThrottled = 8;
#endif
const double kThrottledResourceRequestFlushPeriodS = 1. / 60.;
// Maximum allocation size allowed for image scaling filters that
// require pre-scaling. Skia will fallback to a filter that doesn't
// require pre-scaling if the default filter would require an
// allocation that exceeds this limit.
const size_t kImageCacheSingleAllocationByteLimit = 64 * 1024 * 1024;
// 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) {
}
bool Visit(RenderView* render_view) override {
WebView* webview = render_view->GetWebView();
// Remote frames don't host documents.
// TODO(wjmaclean) Although it seems likely that a frame without a
// document can safely early-out here, we should confirm this is truly
// the case. https://crbug.com/477007
if (webview->mainFrame()->isWebRemoteFrame())
return true;
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()) &&
!static_cast<RenderViewImpl*>(render_view)
->uses_temporary_zoom_level()) {
webview->hidePopups();
webview->setZoomLevel(zoom_level_);
}
return true;
}
private:
const std::string scheme_;
const std::string host_;
const double zoom_level_;
DISALLOW_COPY_AND_ASSIGN(RenderViewZoomer);
};
class CompositorRasterThread : public base::SimpleThread {
public:
CompositorRasterThread(cc::TaskGraphRunner* task_graph_runner,
const std::string& name_prefix)
: base::SimpleThread(name_prefix),
task_graph_runner_(task_graph_runner) {}
// Overridden from base::SimpleThread:
void Run() override { task_graph_runner_->Run(); }
private:
cc::TaskGraphRunner* task_graph_runner_;
DISALLOW_COPY_AND_ASSIGN(CompositorRasterThread);
};
std::string HostToCustomHistogramSuffix(const std::string& host) {
if (host == "mail.google.com")
return ".gmail";
if (host == "docs.google.com" || host == "drive.google.com")
return ".docs";
if (host == "plus.google.com")
return ".plus";
return std::string();
}
void* CreateHistogram(
const char *name, int min, int max, size_t buckets) {
if (min <= 0)
min = 1;
std::string histogram_name;
RenderThreadImpl* render_thread_impl = RenderThreadImpl::current();
if (render_thread_impl) { // Can be null in tests.
histogram_name = render_thread_impl->
histogram_customizer()->ConvertToCustomHistogramName(name);
} else {
histogram_name = std::string(name);
}
base::HistogramBase* histogram = base::Histogram::FactoryGet(
histogram_name, min, max, buckets,
base::Histogram::kUmaTargetedHistogramFlag);
return histogram;
}
void AddHistogramSample(void* hist, int sample) {
base::Histogram* histogram = static_cast<base::Histogram*>(hist);
histogram->Add(sample);
}
scoped_ptr<cc::SharedBitmap> AllocateSharedBitmapFunction(
const gfx::Size& size) {
return ChildThreadImpl::current()->shared_bitmap_manager()->
AllocateSharedBitmap(size);
}
void EnableBlinkPlatformLogChannels(const std::string& channels) {
if (channels.empty())
return;
base::StringTokenizer t(channels, ", ");
while (t.GetNext())
blink::enableLogChannel(t.token().c_str());
}
void NotifyTimezoneChangeOnThisThread() {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
if (!isolate)
return;
v8::Date::DateTimeConfigurationChangeNotification(isolate);
}
void LowMemoryNotificationOnThisThread() {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
if (!isolate)
return;
isolate->LowMemoryNotification();
}
class RenderFrameSetupImpl : public mojo::InterfaceImpl<RenderFrameSetup> {
public:
RenderFrameSetupImpl()
: routing_id_highmark_(-1) {
}
void ExchangeServiceProviders(
int32_t frame_routing_id,
mojo::InterfaceRequest<mojo::ServiceProvider> services,
mojo::ServiceProviderPtr exposed_services)
override {
// TODO(morrita): This is for investigating http://crbug.com/415059 and
// should be removed once it is fixed.
CHECK_LT(routing_id_highmark_, frame_routing_id);
routing_id_highmark_ = frame_routing_id;
RenderFrameImpl* frame = RenderFrameImpl::FromRoutingID(frame_routing_id);
// We can receive a GetServiceProviderForFrame message for a frame not yet
// created due to a race between the message and a ViewMsg_New IPC that
// triggers creation of the RenderFrame we want.
if (!frame) {
RenderThreadImpl::current()->RegisterPendingRenderFrameConnect(
frame_routing_id, services.Pass(), exposed_services.Pass());
return;
}
frame->BindServiceRegistry(services.Pass(), exposed_services.Pass());
}
private:
int32_t routing_id_highmark_;
};
void CreateRenderFrameSetup(mojo::InterfaceRequest<RenderFrameSetup> request) {
mojo::BindToRequest(new RenderFrameSetupImpl(), &request);
}
blink::WebGraphicsContext3D::Attributes GetOffscreenAttribs() {
blink::WebGraphicsContext3D::Attributes attributes;
attributes.shareResources = true;
attributes.depth = false;
attributes.stencil = false;
attributes.antialias = false;
attributes.noAutomaticFlushes = true;
return attributes;
}
} // namespace
// For measuring memory usage after each task. Behind a command line flag.
class MemoryObserver : public base::MessageLoop::TaskObserver {
public:
MemoryObserver() {}
~MemoryObserver() override {}
void WillProcessTask(const base::PendingTask& pending_task) override {}
void DidProcessTask(const base::PendingTask& pending_task) override {
LOCAL_HISTOGRAM_MEMORY_KB("Memory.RendererUsed", GetMemoryUsageKB());
}
private:
DISALLOW_COPY_AND_ASSIGN(MemoryObserver);
};
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 (base::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);
blink::mainThreadIsolate()->SetCreateHistogramFunction(CreateHistogram);
}
}
RenderThreadImpl* RenderThreadImpl::current() {
return lazy_tls.Pointer()->Get();
}
RenderThreadImpl::RenderThreadImpl(const InProcessChildThreadParams& params)
: ChildThreadImpl(Options::Builder()
.InBrowserProcess(params)
.UseMojoChannel(ShouldUseMojoChannel())
.Build()) {
Init();
}
// 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(
scoped_ptr<base::MessageLoop> main_message_loop)
: ChildThreadImpl(Options::Builder()
.UseMojoChannel(ShouldUseMojoChannel())
.Build()),
main_message_loop_(main_message_loop.Pass()) {
Init();
}
void RenderThreadImpl::Init() {
TRACE_EVENT_BEGIN_ETW("RenderThreadImpl::Init", 0, "");
base::trace_event::TraceLog::GetInstance()->SetThreadSortIndex(
base::PlatformThread::CurrentId(),
kTraceEventRendererMainThreadSortIndex);
#if defined(OS_MACOSX) || defined(OS_ANDROID)
// On Mac and Android, the select popups are rendered by the browser.
blink::WebView::setUseExternalPopupMenus(true);
#endif
lazy_tls.Pointer()->Set(this);
// Register this object as the main thread.
ChildProcess::current()->set_main_thread(this);
// In single process the single process is all there is.
notify_webkit_of_modal_loop_ = true;
webkit_shared_timer_suspended_ = false;
widget_count_ = 0;
hidden_widget_count_ = 0;
idle_notification_delay_in_ms_ = kInitialIdleHandlerDelayMs;
idle_notifications_to_skip_ = 0;
layout_test_mode_ = false;
appcache_dispatcher_.reset(
new AppCacheDispatcher(Get(), new AppCacheFrontendImpl()));
dom_storage_dispatcher_.reset(new DomStorageDispatcher());
main_thread_indexed_db_dispatcher_.reset(new IndexedDBDispatcher(
thread_safe_sender()));
renderer_scheduler_ = scheduler::RendererScheduler::Create();
channel()->SetListenerTaskRunner(renderer_scheduler_->DefaultTaskRunner());
main_thread_cache_storage_dispatcher_.reset(
new CacheStorageDispatcher(thread_safe_sender()));
embedded_worker_dispatcher_.reset(new EmbeddedWorkerDispatcher());
// Note: This may reorder messages from the ResourceDispatcher with respect to
// other subsystems.
resource_dispatch_throttler_.reset(new ResourceDispatchThrottler(
static_cast<RenderThread*>(this), renderer_scheduler_.get(),
base::TimeDelta::FromSecondsD(kThrottledResourceRequestFlushPeriodS),
kMaxResourceRequestsPerFlushWhenThrottled));
resource_dispatcher()->set_message_sender(resource_dispatch_throttler_.get());
media_stream_center_ = NULL;
db_message_filter_ = new DBMessageFilter();
AddFilter(db_message_filter_.get());
vc_manager_.reset(new VideoCaptureImplManager());
AddFilter(vc_manager_->video_capture_message_filter());
browser_plugin_manager_.reset(new BrowserPluginManager());
AddObserver(browser_plugin_manager_.get());
#if defined(ENABLE_WEBRTC)
peer_connection_tracker_.reset(new PeerConnectionTracker());
AddObserver(peer_connection_tracker_.get());
p2p_socket_dispatcher_ =
new P2PSocketDispatcher(GetIOMessageLoopProxy().get());
AddFilter(p2p_socket_dispatcher_.get());
webrtc_identity_service_.reset(new WebRTCIdentityService());
aec_dump_message_filter_ =
new AecDumpMessageFilter(GetIOMessageLoopProxy(),
message_loop()->message_loop_proxy());
AddFilter(aec_dump_message_filter_.get());
peer_connection_factory_.reset(new PeerConnectionDependencyFactory(
p2p_socket_dispatcher_.get()));
#endif // defined(ENABLE_WEBRTC)
audio_input_message_filter_ =
new AudioInputMessageFilter(GetIOMessageLoopProxy());
AddFilter(audio_input_message_filter_.get());
audio_message_filter_ = new AudioMessageFilter(GetIOMessageLoopProxy());
AddFilter(audio_message_filter_.get());
midi_message_filter_ = new MidiMessageFilter(GetIOMessageLoopProxy());
AddFilter(midi_message_filter_.get());
AddFilter((new IndexedDBMessageFilter(thread_safe_sender()))->GetFilter());
AddFilter((new CacheStorageMessageFilter(thread_safe_sender()))->GetFilter());
AddFilter((new EmbeddedWorkerContextMessageFilter())->GetFilter());
GetContentClient()->renderer()->RenderThreadStarted();
InitSkiaEventTracer();
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
is_impl_side_painting_enabled_ =
!command_line.HasSwitch(switches::kDisableImplSidePainting);
cc_blink::WebLayerImpl::SetImplSidePaintingEnabled(
is_impl_side_painting_enabled_);
is_zero_copy_enabled_ = command_line.HasSwitch(switches::kEnableZeroCopy);
is_one_copy_enabled_ = !command_line.HasSwitch(switches::kDisableOneCopy);
#if defined(OS_MACOSX) && !defined(OS_IOS)
is_elastic_overscroll_enabled_ = base::mac::IsOSLionOrLater();
if (is_elastic_overscroll_enabled_) {
base::ScopedCFTypeRef<CFStringRef> key(
base::SysUTF8ToCFStringRef("NSScrollViewRubberbanding"));
Boolean key_exists = false;
Boolean value = CFPreferencesGetAppBooleanValue(
key, kCFPreferencesCurrentApplication, &key_exists);
if (key_exists && !value)
is_elastic_overscroll_enabled_ = false;
}
#else
is_elastic_overscroll_enabled_ = false;
#endif
std::string image_texture_target_string =
command_line.GetSwitchValueASCII(switches::kUseImageTextureTarget);
bool parsed_image_texture_target = base::StringToUint(
image_texture_target_string, &use_image_texture_target_);
DCHECK(parsed_image_texture_target);
if (command_line.HasSwitch(switches::kDisableLCDText)) {
is_lcd_text_enabled_ = false;
} else if (command_line.HasSwitch(switches::kEnableLCDText)) {
is_lcd_text_enabled_ = true;
} else {
#if defined(OS_ANDROID)
is_lcd_text_enabled_ = false;
#else
is_lcd_text_enabled_ = true;
#endif
}
is_gpu_rasterization_enabled_ =
command_line.HasSwitch(switches::kEnableGpuRasterization);
is_gpu_rasterization_forced_ =
command_line.HasSwitch(switches::kForceGpuRasterization);
if (command_line.HasSwitch(switches::kGpuRasterizationMSAASampleCount)) {
std::string string_value = command_line.GetSwitchValueASCII(
switches::kGpuRasterizationMSAASampleCount);
bool parsed_msaa_sample_count =
base::StringToInt(string_value, &gpu_rasterization_msaa_sample_count_);
DCHECK(parsed_msaa_sample_count) << string_value;
DCHECK_GE(gpu_rasterization_msaa_sample_count_, 0);
} else {
gpu_rasterization_msaa_sample_count_ = 0;
}
if (command_line.HasSwitch(switches::kDisableDistanceFieldText)) {
is_distance_field_text_enabled_ = false;
} else if (command_line.HasSwitch(switches::kEnableDistanceFieldText)) {
is_distance_field_text_enabled_ = true;
} else {
is_distance_field_text_enabled_ = false;
}
// Note that under Linux, the media library will normally already have
// been initialized by the Zygote before this instance became a Renderer.
media::InitializeMediaLibrary();
memory_pressure_listener_.reset(new base::MemoryPressureListener(
base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this))));
compositor_task_graph_runner_.reset(new cc::TaskGraphRunner);
is_gather_pixel_refs_enabled_ = false;
if (is_impl_side_painting_enabled_) {
int num_raster_threads = 0;
std::string string_value =
command_line.GetSwitchValueASCII(switches::kNumRasterThreads);
bool parsed_num_raster_threads =
base::StringToInt(string_value, &num_raster_threads);
DCHECK(parsed_num_raster_threads) << string_value;
DCHECK_GT(num_raster_threads, 0);
// Note: Currently, gathering of pixel refs when using a single
// raster thread doesn't provide any benefit. This might change
// in the future but we avoid it for now to reduce the cost of
// Picture::Create.
is_gather_pixel_refs_enabled_ = num_raster_threads > 1;
while (compositor_raster_threads_.size() <
static_cast<size_t>(num_raster_threads)) {
scoped_ptr<CompositorRasterThread> raster_thread(
new CompositorRasterThread(
compositor_task_graph_runner_.get(),
base::StringPrintf(
"CompositorTileWorker%u",
static_cast<unsigned>(compositor_raster_threads_.size() + 1))
.c_str()));
raster_thread->Start();
#if defined(OS_ANDROID) || defined(OS_LINUX)
if (!command_line.HasSwitch(
switches::kUseNormalPriorityForTileTaskWorkerThreads)) {
raster_thread->SetThreadPriority(base::ThreadPriority::BACKGROUND);
}
#endif
compositor_raster_threads_.push_back(raster_thread.Pass());
}
}
// In single process, browser main loop set up the discardable memory
// allocator.
if (!command_line.HasSwitch(switches::kSingleProcess)) {
base::DiscardableMemoryAllocator::SetInstance(
ChildThreadImpl::discardable_shared_memory_manager());
}
service_registry()->AddService<RenderFrameSetup>(
base::Bind(CreateRenderFrameSetup));
TRACE_EVENT_END_ETW("RenderThreadImpl::Init", 0, "");
}
RenderThreadImpl::~RenderThreadImpl() {
}
void RenderThreadImpl::Shutdown() {
FOR_EACH_OBSERVER(
RenderProcessObserver, observers_, OnRenderProcessShutdown());
ChildThreadImpl::Shutdown();
if (memory_observer_) {
message_loop()->RemoveTaskObserver(memory_observer_.get());
memory_observer_.reset();
}
// Wait for all databases to be closed.
if (blink_platform_impl_) {
// WaitForAllDatabasesToClose might run a nested message loop. To avoid
// processing timer events while we're already in the process of shutting
// down blink, put a ScopePageLoadDeferrer on the stack.
WebView::willEnterModalLoop();
blink_platform_impl_->web_database_observer_impl()
->WaitForAllDatabasesToClose();
WebView::didExitModalLoop();
}
// 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;
#if defined(ENABLE_WEBRTC)
RTCPeerConnectionHandler::DestructAllHandlers();
// |peer_connection_factory_| cannot be deleted until after the main message
// loop has been destroyed. This is because there may be pending tasks that
// hold on to objects produced by the PC factory that depend on threads owned
// by the PC factory. Once those tasks have been freed, the factory can be
// deleted.
#endif
RemoveFilter(vc_manager_->video_capture_message_filter());
vc_manager_.reset();
RemoveFilter(db_message_filter_.get());
db_message_filter_ = NULL;
// Shutdown the file thread if it's running.
if (file_thread_)
file_thread_->Stop();
if (compositor_message_filter_.get()) {
RemoveFilter(compositor_message_filter_.get());
compositor_message_filter_ = NULL;
}
media_thread_.reset();
// AudioMessageFilter may be accessed on |media_thread_|, so shutdown after.
RemoveFilter(audio_message_filter_.get());
audio_message_filter_ = NULL;
compositor_thread_.reset();
// Shutdown raster threads.
compositor_task_graph_runner_->Shutdown();
while (!compositor_raster_threads_.empty()) {
compositor_raster_threads_.back()->Join();
compositor_raster_threads_.pop_back();
}
compositor_task_graph_runner_.reset();
main_input_callback_.Cancel();
input_handler_manager_.reset();
if (input_event_filter_.get()) {
RemoveFilter(input_event_filter_.get());
input_event_filter_ = NULL;
}
// RemoveEmbeddedWorkerRoute may be called while deleting
// EmbeddedWorkerDispatcher. So it must be deleted before deleting
// RenderThreadImpl.
embedded_worker_dispatcher_.reset();
// Ramp down IDB before we ramp down WebKit (and V8), since IDB classes might
// hold pointers to V8 objects (e.g., via pending requests).
main_thread_indexed_db_dispatcher_.reset();
main_thread_compositor_task_runner_ = NULL;
// Context providers must be released prior to destroying the GPU channel.
gpu_va_context_provider_ = nullptr;
shared_main_thread_contexts_ = nullptr;
if (gpu_channel_.get())
gpu_channel_->DestroyChannel();
// TODO(port)
#if defined(OS_WIN)
// Clean up plugin channels before this thread goes away.
NPChannelBase::CleanupChannels();
#endif
// Shut down the message loop and the renderer scheduler before shutting down
// Blink. This prevents a scenario where a pending task in the message loop
// accesses Blink objects after Blink shuts down.
// This must be at the very end of the shutdown sequence. You must not touch
// the message loop after this.
renderer_scheduler_->Shutdown();
main_message_loop_.reset();
if (blink_platform_impl_)
blink::shutdown();
lazy_tls.Pointer()->Set(NULL);
}
bool RenderThreadImpl::Send(IPC::Message* msg) {
// Certain synchronous messages cannot always be processed synchronously by
// the browser, e.g., putting up UI and waiting for the user. This could cause
// a complete hang of Chrome if a windowed plugin 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
// plugin. The remedy is to pump messages on this thread while the browser
// is processing this request. This creates an opportunity for re-entrancy
// into WebKit, so we need to take care to disable callbacks, timers, and
// pending network loads that could trigger such callbacks.
bool pumping_events = false;
if (msg->is_sync()) {
if (msg->is_caller_pumping_messages()) {
pumping_events = true;
}
}
bool notify_webkit_of_modal_loop = true; // default value
std::swap(notify_webkit_of_modal_loop, notify_webkit_of_modal_loop_);
#if defined(ENABLE_PLUGINS)
int render_view_id = MSG_ROUTING_NONE;
#endif
if (pumping_events) {
// TODO(alexclarke): Remove the shared timer.
blink_platform_impl_->SuspendSharedTimer();
renderer_scheduler_->SuspendTimerQueue();
if (notify_webkit_of_modal_loop)
WebView::willEnterModalLoop();
#if defined(ENABLE_PLUGINS)
RenderViewImpl* render_view =
RenderViewImpl::FromRoutingID(msg->routing_id());
if (render_view) {
render_view_id = msg->routing_id();
PluginChannelHost::Broadcast(
new PluginMsg_SignalModalDialogEvent(render_view_id));
}
#endif
}
bool rv = ChildThreadImpl::Send(msg);
if (pumping_events) {
#if defined(ENABLE_PLUGINS)
if (render_view_id != MSG_ROUTING_NONE) {
PluginChannelHost::Broadcast(
new PluginMsg_ResetModalDialogEvent(render_view_id));
}
#endif
if (notify_webkit_of_modal_loop)
WebView::didExitModalLoop();
// TODO(alexclarke): Remove the shared timer.
blink_platform_impl_->ResumeSharedTimer();
renderer_scheduler_->ResumeTimerQueue();
}
return rv;
}
scoped_refptr<base::SingleThreadTaskRunner> RenderThreadImpl::GetTaskRunner() {
return GetRendererScheduler()->DefaultTaskRunner();
}
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 base::CommandLine& parsed_command_line =
*base::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) {
ChildThreadImpl::GetRouter()->AddRoute(routing_id, listener);
PendingRenderFrameConnectMap::iterator it =
pending_render_frame_connects_.find(routing_id);
if (it == pending_render_frame_connects_.end())
return;
RenderFrameImpl* frame = RenderFrameImpl::FromRoutingID(routing_id);
if (!frame)
return;
scoped_refptr<PendingRenderFrameConnect> connection(it->second);
mojo::InterfaceRequest<mojo::ServiceProvider> services(
connection->services().Pass());
mojo::ServiceProviderPtr exposed_services(
connection->exposed_services().Pass());
exposed_services.set_error_handler(nullptr);
pending_render_frame_connects_.erase(it);
frame->BindServiceRegistry(services.Pass(), exposed_services.Pass());
}
void RenderThreadImpl::RemoveRoute(int32 routing_id) {
ChildThreadImpl::GetRouter()->RemoveRoute(routing_id);
}
void RenderThreadImpl::AddEmbeddedWorkerRoute(int32 routing_id,
IPC::Listener* listener) {
AddRoute(routing_id, listener);
if (devtools_agent_message_filter_.get()) {
devtools_agent_message_filter_->AddEmbeddedWorkerRouteOnMainThread(
routing_id);
}
}
void RenderThreadImpl::RemoveEmbeddedWorkerRoute(int32 routing_id) {
RemoveRoute(routing_id);
if (devtools_agent_message_filter_.get()) {
devtools_agent_message_filter_->RemoveEmbeddedWorkerRouteOnMainThread(
routing_id);
}
}
void RenderThreadImpl::RegisterPendingRenderFrameConnect(
int routing_id,
mojo::InterfaceRequest<mojo::ServiceProvider> services,
mojo::ServiceProviderPtr exposed_services) {
std::pair<PendingRenderFrameConnectMap::iterator, bool> result =
pending_render_frame_connects_.insert(std::make_pair(
routing_id,
make_scoped_refptr(new PendingRenderFrameConnect(
routing_id, services.Pass(), exposed_services.Pass()))));
CHECK(result.second) << "Inserting a duplicate item.";
}
int RenderThreadImpl::GenerateRoutingID() {
int routing_id = MSG_ROUTING_NONE;
Send(new ViewHostMsg_GenerateRoutingID(&routing_id));
return routing_id;
}
void RenderThreadImpl::AddFilter(IPC::MessageFilter* filter) {
channel()->AddFilter(filter);
}
void RenderThreadImpl::RemoveFilter(IPC::MessageFilter* filter) {
channel()->RemoveFilter(filter);
}
void RenderThreadImpl::AddObserver(RenderProcessObserver* observer) {
observers_.AddObserver(observer);
}
void RenderThreadImpl::RemoveObserver(RenderProcessObserver* observer) {
observers_.RemoveObserver(observer);
}
void RenderThreadImpl::SetResourceDispatcherDelegate(
ResourceDispatcherDelegate* delegate) {
resource_dispatcher()->set_delegate(delegate);
}
void RenderThreadImpl::SetResourceDispatchTaskQueue(
const scoped_refptr<base::SingleThreadTaskRunner>& resource_task_queue) {
// Add a filter that forces resource messages to be dispatched via a
// particular task runner.
resource_scheduling_filter_ =
new ResourceSchedulingFilter(resource_task_queue, resource_dispatcher());
channel()->AddFilter(resource_scheduling_filter_.get());
// The ChildResourceMessageFilter and the ResourceDispatcher need to use the
// same queue to ensure tasks are executed in the expected order.
child_resource_message_filter()->SetMainThreadTaskRunner(resource_task_queue);
resource_dispatcher()->SetMainThreadTaskRunner(resource_task_queue);
}
void RenderThreadImpl::EnsureWebKitInitialized() {
if (blink_platform_impl_)
return;
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
#ifdef ENABLE_VTUNE_JIT_INTERFACE
if (command_line.HasSwitch(switches::kEnableVtune))
gin::Debug::SetJitCodeEventHandler(vTune::GetVtuneCodeEventHandler());
#endif
SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line);
blink_platform_impl_.reset(
new RendererBlinkPlatformImpl(renderer_scheduler_.get()));
blink::initialize(blink_platform_impl_.get());
v8::Isolate* isolate = blink::mainThreadIsolate();
isolate->SetCreateHistogramFunction(CreateHistogram);
isolate->SetAddHistogramSampleFunction(AddHistogramSample);
main_thread_compositor_task_runner_ =
renderer_scheduler_->CompositorTaskRunner();
main_input_callback_.Reset(
base::Bind(base::IgnoreResult(&RenderThreadImpl::OnMessageReceived),
base::Unretained(this)));
SetResourceDispatchTaskQueue(renderer_scheduler_->LoadingTaskRunner());
bool enable = !command_line.HasSwitch(switches::kDisableThreadedCompositing);
if (enable) {
#if defined(OS_ANDROID)
if (SynchronousCompositorFactory* factory =
SynchronousCompositorFactory::GetInstance())
compositor_message_loop_proxy_ =
factory->GetCompositorMessageLoop();
#endif
if (!compositor_message_loop_proxy_.get()) {
compositor_thread_.reset(new base::Thread("Compositor"));
compositor_thread_->Start();
#if defined(OS_ANDROID)
compositor_thread_->SetPriority(base::ThreadPriority::DISPLAY);
#endif
compositor_message_loop_proxy_ =
compositor_thread_->message_loop_proxy();
compositor_message_loop_proxy_->PostTask(
FROM_HERE,
base::Bind(base::IgnoreResult(&ThreadRestrictions::SetIOAllowed),
false));
}
InputHandlerManagerClient* input_handler_manager_client = NULL;
#if defined(OS_ANDROID)
if (SynchronousCompositorFactory* factory =
SynchronousCompositorFactory::GetInstance()) {
input_handler_manager_client = factory->GetInputHandlerManagerClient();
}
#endif
if (!input_handler_manager_client) {
scoped_refptr<InputEventFilter> compositor_input_event_filter(
new InputEventFilter(main_input_callback_.callback(),
main_thread_compositor_task_runner_,
compositor_message_loop_proxy_));
input_handler_manager_client = compositor_input_event_filter.get();
input_event_filter_ = compositor_input_event_filter;
}
input_handler_manager_.reset(new InputHandlerManager(
compositor_message_loop_proxy_, input_handler_manager_client,
renderer_scheduler_.get()));
}
if (!input_event_filter_.get()) {
// Always provide an input event filter implementation to ensure consistent
// input event scheduling and prioritization.
// TODO(jdduke): Merge InputEventFilter, InputHandlerManager and
// MainThreadInputEventFilter, crbug.com/436057.
input_event_filter_ = new MainThreadInputEventFilter(
main_input_callback_.callback(), main_thread_compositor_task_runner_);
}
AddFilter(input_event_filter_.get());
scoped_refptr<base::MessageLoopProxy> compositor_impl_side_loop;
if (enable)
compositor_impl_side_loop = compositor_message_loop_proxy_;
else
compositor_impl_side_loop = base::MessageLoopProxy::current();
compositor_message_filter_ = new CompositorForwardingMessageFilter(
compositor_impl_side_loop.get());
AddFilter(compositor_message_filter_.get());
RenderThreadImpl::RegisterSchemes();
EnableBlinkPlatformLogChannels(
command_line.GetSwitchValueASCII(switches::kBlinkPlatformLogChannels));
RenderMediaClient::Initialize();
FOR_EACH_OBSERVER(RenderProcessObserver, observers_, WebKitInitialized());
devtools_agent_message_filter_ = new DevToolsAgentFilter();
AddFilter(devtools_agent_message_filter_.get());
v8_sampling_profiler_.reset(new V8SamplingProfiler());
if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
ScheduleIdleHandler(kLongIdleHandlerDelayMs);
cc_blink::SetSharedBitmapAllocationFunction(AllocateSharedBitmapFunction);
// Limit use of the scaled image cache to when deferred image decoding is
// enabled.
if (!command_line.HasSwitch(switches::kEnableDeferredImageDecoding) &&
!is_impl_side_painting_enabled_)
SkGraphics::SetResourceCacheTotalByteLimit(0u);
SkGraphics::SetResourceCacheSingleAllocationByteLimit(
kImageCacheSingleAllocationByteLimit);
if (command_line.HasSwitch(switches::kMemoryMetrics)) {
memory_observer_.reset(new MemoryObserver());
message_loop()->AddTaskObserver(memory_observer_.get());
}
if (command_line.HasSwitch(switches::kExplicitlyAllowedPorts)) {
std::string allowed_ports =
command_line.GetSwitchValueASCII(switches::kExplicitlyAllowedPorts);
net::SetExplicitlyAllowedPorts(allowed_ports);
}
}
void RenderThreadImpl::RegisterSchemes() {
// swappedout: pages should not be accessible, and should also
// be treated as empty documents that can commit synchronously.
WebString swappedout_scheme(base::ASCIIToUTF16(kSwappedOutScheme));
WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(swappedout_scheme);
WebSecurityPolicy::registerURLSchemeAsEmptyDocument(swappedout_scheme);
}
void RenderThreadImpl::NotifyTimezoneChange() {
NotifyTimezoneChangeOnThisThread();
RenderThread::Get()->PostTaskToAllWebWorkers(
base::Bind(&NotifyTimezoneChangeOnThisThread));
}
void RenderThreadImpl::RecordAction(const base::UserMetricsAction& action) {
Send(new ViewHostMsg_UserMetricsRecordAction(action.str_));
}
void RenderThreadImpl::RecordComputedAction(const std::string& action) {
Send(new ViewHostMsg_UserMetricsRecordAction(action));
}
scoped_ptr<base::SharedMemory>
RenderThreadImpl::HostAllocateSharedMemoryBuffer(size_t size) {
return ChildThreadImpl::AllocateSharedMemory(size, thread_safe_sender());
}
cc::SharedBitmapManager* RenderThreadImpl::GetSharedBitmapManager() {
return shared_bitmap_manager();
}
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) {
if (idle_notifications_to_skip_ > 0) {
--idle_notifications_to_skip_;
} else {
base::allocator::ReleaseFreeMemory();
discardable_shared_memory_manager()->ReleaseFreeMemory();
}
ScheduleIdleHandler(kLongIdleHandlerDelayMs);
return;
}
base::allocator::ReleaseFreeMemory();
discardable_shared_memory_manager()->ReleaseFreeMemory();
// Continue the idle timer if the webkit shared timer is not suspended or
// something is left to do.
bool continue_timer = !webkit_shared_timer_suspended_;
if (blink::mainThreadIsolate() &&
!blink::mainThreadIsolate()->IdleNotificationDeadline(
blink_platform_impl_->monotonicallyIncreasingTime() + 1.0)) {
continue_timer = true;
}
// Schedule next invocation. When the tab is originally hidden, an invocation
// is scheduled for kInitialIdleHandlerDelayMs in
// RenderThreadImpl::WidgetHidden in order to race to a minimal heap.
// After that, idle calls can be much less frequent, so run at a maximum of
// once every kLongIdleHandlerDelayMs.
// 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:
// 30s, 30, 30, 31, 31, 31, 31, 32, 32, ...
// 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).
if (continue_timer) {
ScheduleIdleHandler(
std::max(kLongIdleHandlerDelayMs,
idle_notification_delay_in_ms_ +
1000000 / (idle_notification_delay_in_ms_ + 2000)));
} else {
idle_timer_.Stop();
}
FOR_EACH_OBSERVER(RenderProcessObserver, observers_, IdleNotification());
}
int64 RenderThreadImpl::GetIdleNotificationDelayInMs() const {
return idle_notification_delay_in_ms_;
}
void RenderThreadImpl::SetIdleNotificationDelayInMs(
int64 idle_notification_delay_in_ms) {
idle_notification_delay_in_ms_ = idle_notification_delay_in_ms;
}
void RenderThreadImpl::UpdateHistograms(int sequence_number) {
child_histogram_message_filter()->SendHistograms(sequence_number);
}
int RenderThreadImpl::PostTaskToAllWebWorkers(const base::Closure& closure) {
return WorkerTaskRunner::Instance()->PostTaskToAllThreads(closure);
}
bool RenderThreadImpl::ResolveProxy(const GURL& url, std::string* proxy_list) {
bool result = false;
Send(new ViewHostMsg_ResolveProxy(url, &result, proxy_list));
return result;
}
void RenderThreadImpl::PostponeIdleNotification() {
idle_notifications_to_skip_ = 2;
}
scoped_refptr<media::GpuVideoAcceleratorFactories>
RenderThreadImpl::GetGpuFactories() {
DCHECK(IsMainThread());
scoped_refptr<GpuChannelHost> gpu_channel_host = GetGpuChannel();
const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
scoped_refptr<media::GpuVideoAcceleratorFactories> gpu_factories;
scoped_refptr<base::SingleThreadTaskRunner> media_task_runner =
GetMediaThreadTaskRunner();
if (!cmd_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) {
if (!gpu_va_context_provider_.get() ||
gpu_va_context_provider_->DestroyedOnMainThread()) {
if (!gpu_channel_host.get()) {
gpu_channel_host = EstablishGpuChannelSync(
CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE);
}
blink::WebGraphicsContext3D::Attributes attributes;
bool lose_context_when_out_of_memory = false;
gpu_va_context_provider_ = ContextProviderCommandBuffer::Create(
make_scoped_ptr(
WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
gpu_channel_host.get(),
attributes,
lose_context_when_out_of_memory,
GURL("chrome://gpu/RenderThreadImpl::GetGpuVDAContext3D"),
WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits(),
NULL)),
GPU_VIDEO_ACCELERATOR_CONTEXT);
}
}
if (gpu_va_context_provider_.get()) {
gpu_factories = RendererGpuVideoAcceleratorFactories::Create(
gpu_channel_host.get(), media_task_runner, gpu_va_context_provider_);
}
return gpu_factories;
}
scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
RenderThreadImpl::CreateOffscreenContext3d() {
blink::WebGraphicsContext3D::Attributes attributes(GetOffscreenAttribs());
bool lose_context_when_out_of_memory = true;
scoped_refptr<GpuChannelHost> gpu_channel_host(EstablishGpuChannelSync(
CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE));
return make_scoped_ptr(
WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
gpu_channel_host.get(),
attributes,
lose_context_when_out_of_memory,
GURL("chrome://gpu/RenderThreadImpl::CreateOffscreenContext3d"),
WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits(),
NULL));
}
scoped_refptr<cc_blink::ContextProviderWebContext>
RenderThreadImpl::SharedMainThreadContextProvider() {
DCHECK(IsMainThread());
if (!shared_main_thread_contexts_.get() ||
shared_main_thread_contexts_->DestroyedOnMainThread()) {
shared_main_thread_contexts_ = NULL;
#if defined(OS_ANDROID)
if (SynchronousCompositorFactory* factory =
SynchronousCompositorFactory::GetInstance()) {
shared_main_thread_contexts_ = factory->CreateOffscreenContextProvider(
GetOffscreenAttribs(), "Offscreen-MainThread");
}
#endif
if (!shared_main_thread_contexts_.get()) {
shared_main_thread_contexts_ = ContextProviderCommandBuffer::Create(
CreateOffscreenContext3d(), RENDERER_MAINTHREAD_CONTEXT);
}
if (shared_main_thread_contexts_.get() &&
!shared_main_thread_contexts_->BindToCurrentThread())
shared_main_thread_contexts_ = NULL;
}
return shared_main_thread_contexts_;
}
AudioRendererMixerManager* RenderThreadImpl::GetAudioRendererMixerManager() {
if (!audio_renderer_mixer_manager_) {
audio_renderer_mixer_manager_.reset(new AudioRendererMixerManager(
GetAudioHardwareConfig()));
}
return audio_renderer_mixer_manager_.get();
}
media::AudioHardwareConfig* RenderThreadImpl::GetAudioHardwareConfig() {
if (!audio_hardware_config_) {
media::AudioParameters input_params;
media::AudioParameters output_params;
Send(new ViewHostMsg_GetAudioHardwareConfig(
&input_params, &output_params));
audio_hardware_config_.reset(new media::AudioHardwareConfig(
input_params, output_params));
}
return audio_hardware_config_.get();
}
base::WaitableEvent* RenderThreadImpl::GetShutdownEvent() {
return ChildProcess::current()->GetShutDownEvent();
}
#if defined(OS_WIN)
void RenderThreadImpl::PreCacheFontCharacters(const LOGFONT& log_font,
const base::string16& str) {
Send(new ViewHostMsg_PreCacheFontCharacters(log_font, str));
}
#endif // OS_WIN
ServiceRegistry* RenderThreadImpl::GetServiceRegistry() {
return service_registry();
}
bool RenderThreadImpl::IsImplSidePaintingEnabled() {
return is_impl_side_painting_enabled_;
}
bool RenderThreadImpl::IsGpuRasterizationForced() {
return is_gpu_rasterization_forced_;
}
bool RenderThreadImpl::IsGpuRasterizationEnabled() {
return is_gpu_rasterization_enabled_;
}
int RenderThreadImpl::GetGpuRasterizationMSAASampleCount() {
return gpu_rasterization_msaa_sample_count_;
}
bool RenderThreadImpl::IsLcdTextEnabled() {
return is_lcd_text_enabled_;
}
bool RenderThreadImpl::IsDistanceFieldTextEnabled() {
return is_distance_field_text_enabled_;
}
bool RenderThreadImpl::IsZeroCopyEnabled() {
return is_zero_copy_enabled_;
}
bool RenderThreadImpl::IsOneCopyEnabled() {
return is_one_copy_enabled_;
}
bool RenderThreadImpl::IsElasticOverscrollEnabled() {
return is_elastic_overscroll_enabled_;
}
bool RenderThreadImpl::UseSingleThreadScheduler() {
// TODO(enne): using the scheduler introduces additional composite steps
// that create flakiness. This should go away eventually.
return !layout_test_mode_;
}
uint32 RenderThreadImpl::GetImageTextureTarget() {
return use_image_texture_target_;
}
scoped_refptr<base::SingleThreadTaskRunner>
RenderThreadImpl::GetCompositorMainThreadTaskRunner() {
return main_thread_compositor_task_runner_;
}
scoped_refptr<base::SingleThreadTaskRunner>
RenderThreadImpl::GetCompositorImplThreadTaskRunner() {
return compositor_message_loop_proxy_;
}
gpu::GpuMemoryBufferManager* RenderThreadImpl::GetGpuMemoryBufferManager() {
return gpu_memory_buffer_manager();
}
scheduler::RendererScheduler* RenderThreadImpl::GetRendererScheduler() {
return renderer_scheduler_.get();
}
cc::ContextProvider* RenderThreadImpl::GetSharedMainThreadContextProvider() {
return SharedMainThreadContextProvider().get();
}
scoped_ptr<cc::BeginFrameSource>
RenderThreadImpl::CreateExternalBeginFrameSource(int routing_id) {
#if defined(OS_ANDROID)
if (SynchronousCompositorFactory* factory =
SynchronousCompositorFactory::GetInstance()) {
return factory->CreateExternalBeginFrameSource(routing_id);
}
#endif
return make_scoped_ptr(new CompositorExternalBeginFrameSource(
compositor_message_filter_.get(), sync_message_filter(), routing_id));
}
cc::TaskGraphRunner* RenderThreadImpl::GetTaskGraphRunner() {
return compositor_task_graph_runner_.get();
}
bool RenderThreadImpl::IsGatherPixelRefsEnabled() {
return is_gather_pixel_refs_enabled_;
}
bool RenderThreadImpl::IsMainThread() {
return !!current();
}
scoped_refptr<base::SingleThreadTaskRunner>
RenderThreadImpl::GetIOThreadTaskRunner() {
return io_thread_task_runner_;
}
scoped_ptr<base::SharedMemory> RenderThreadImpl::AllocateSharedMemory(
size_t size) {
return scoped_ptr<base::SharedMemory>(
HostAllocateSharedMemoryBuffer(size));
}
CreateCommandBufferResult RenderThreadImpl::CreateViewCommandBuffer(
int32 surface_id,
const GPUCreateCommandBufferConfig& init_params,
int32 route_id) {
TRACE_EVENT1("gpu",
"RenderThreadImpl::CreateViewCommandBuffer",
"surface_id",
surface_id);
CreateCommandBufferResult result = CREATE_COMMAND_BUFFER_FAILED;
IPC::Message* message = new GpuHostMsg_CreateViewCommandBuffer(
surface_id,
init_params,
route_id,
&result);
// Allow calling this from the compositor thread.
thread_safe_sender()->Send(message);
return result;
}
void RenderThreadImpl::DoNotNotifyWebKitOfModalLoop() {
notify_webkit_of_modal_loop_ = false;
}
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) ||
embedded_worker_dispatcher_->OnMessageReceived(msg)) {
return true;
}
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(RenderThreadImpl, msg)
IPC_MESSAGE_HANDLER(FrameMsg_NewFrame, OnCreateNewFrame)
IPC_MESSAGE_HANDLER(FrameMsg_NewFrameProxy, OnCreateNewFrameProxy)
IPC_MESSAGE_HANDLER(ViewMsg_SetZoomLevelForCurrentURL,
OnSetZoomLevelForCurrentURL)
// TODO(port): removed from render_messages_internal.h;
// is there a new non-windows message I should add here?
IPC_MESSAGE_HANDLER(ViewMsg_New, OnCreateNewView)
IPC_MESSAGE_HANDLER(ViewMsg_NetworkTypeChanged, OnNetworkTypeChanged)
IPC_MESSAGE_HANDLER(ViewMsg_TempCrashWithData, OnTempCrashWithData)
IPC_MESSAGE_HANDLER(WorkerProcessMsg_CreateWorker, OnCreateNewSharedWorker)
IPC_MESSAGE_HANDLER(ViewMsg_TimezoneChange, OnUpdateTimezone)
#if defined(OS_ANDROID)
IPC_MESSAGE_HANDLER(ViewMsg_SetWebKitSharedTimersSuspended,
OnSetWebKitSharedTimersSuspended)
#endif
#if defined(OS_MACOSX)
IPC_MESSAGE_HANDLER(ViewMsg_UpdateScrollbarTheme, OnUpdateScrollbarTheme)
#endif
#if defined(ENABLE_PLUGINS)
IPC_MESSAGE_HANDLER(ViewMsg_PurgePluginListCache, OnPurgePluginListCache)
#endif
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void RenderThreadImpl::OnCreateNewFrame(FrameMsg_NewFrame_Params params) {
CompositorDependencies* compositor_deps = this;
RenderFrameImpl::CreateFrame(
params.routing_id, params.parent_routing_id,
params.previous_sibling_routing_id, params.proxy_routing_id,
params.replication_state, compositor_deps, params.widget_params);
}
void RenderThreadImpl::OnCreateNewFrameProxy(
int routing_id,
int parent_routing_id,
int render_view_routing_id,
const FrameReplicationState& replicated_state) {
RenderFrameProxy::CreateFrameProxy(routing_id, parent_routing_id,
render_view_routing_id, replicated_state);
}
void RenderThreadImpl::OnSetZoomLevelForCurrentURL(const std::string& scheme,
const std::string& host,
double zoom_level) {
RenderViewZoomer zoomer(scheme, host, zoom_level);
RenderView::ForEach(&zoomer);
}
void RenderThreadImpl::OnCreateNewView(const ViewMsg_New_Params& params) {
EnsureWebKitInitialized();
CompositorDependencies* compositor_deps = this;
// When bringing in render_view, also bring in webkit's glue and jsbindings.
RenderViewImpl::Create(params, compositor_deps, false);
}
GpuChannelHost* RenderThreadImpl::EstablishGpuChannelSync(
CauseForGpuLaunch cause_for_gpu_launch) {
TRACE_EVENT0("gpu", "RenderThreadImpl::EstablishGpuChannelSync");
if (gpu_channel_.get()) {
// Do nothing if we already have a GPU channel or are already
// establishing one.
if (!gpu_channel_->IsLost())
return gpu_channel_.get();
// Recreate the channel if it has been lost.
gpu_channel_->DestroyChannel();
gpu_channel_ = NULL;
}
// Ask the browser for the channel name.
int client_id = 0;
IPC::ChannelHandle channel_handle;
gpu::GPUInfo gpu_info;
if (!Send(new GpuHostMsg_EstablishGpuChannel(cause_for_gpu_launch,
&client_id,
&channel_handle,
&gpu_info)) ||
#if defined(OS_POSIX)
channel_handle.socket.fd == -1 ||
#endif
channel_handle.name.empty()) {
// Otherwise cancel the connection.
return NULL;
}
GetContentClient()->SetGpuInfo(gpu_info);
// Cache some variables that are needed on the compositor thread for our
// implementation of GpuChannelHostFactory.
io_thread_task_runner_ = ChildProcess::current()->io_message_loop_proxy();
gpu_channel_ =
GpuChannelHost::Create(this,
gpu_info,
channel_handle,
ChildProcess::current()->GetShutDownEvent(),
gpu_memory_buffer_manager());
return gpu_channel_.get();
}
blink::WebMediaStreamCenter* RenderThreadImpl::CreateMediaStreamCenter(
blink::WebMediaStreamCenterClient* client) {
#if defined(OS_ANDROID)
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableWebRTC))
return NULL;
#endif
#if defined(ENABLE_WEBRTC)
if (!media_stream_center_) {
media_stream_center_ = GetContentClient()->renderer()
->OverrideCreateWebMediaStreamCenter(client);
if (!media_stream_center_) {
scoped_ptr<MediaStreamCenter> media_stream_center(
new MediaStreamCenter(client, GetPeerConnectionDependencyFactory()));
media_stream_center_ = media_stream_center.release();
}
}
#endif
return media_stream_center_;
}
#if defined(ENABLE_WEBRTC)
PeerConnectionDependencyFactory*
RenderThreadImpl::GetPeerConnectionDependencyFactory() {
return peer_connection_factory_.get();
}
#endif
GpuChannelHost* RenderThreadImpl::GetGpuChannel() {
if (!gpu_channel_.get())
return NULL;
if (gpu_channel_->IsLost())
return NULL;
return gpu_channel_.get();
}
#if defined(ENABLE_PLUGINS)
void RenderThreadImpl::OnPurgePluginListCache(bool reload_pages) {
EnsureWebKitInitialized();
// The call below will cause a GetPlugins call with refresh=true, but at this
// point we already know that the browser has refreshed its list, so disable
// refresh temporarily to prevent each renderer process causing the list to be
// regenerated.
blink_platform_impl_->set_plugin_refresh_allowed(false);
blink::resetPluginCache(reload_pages);
blink_platform_impl_->set_plugin_refresh_allowed(true);
FOR_EACH_OBSERVER(RenderProcessObserver, observers_, PluginListChanged());
}
#endif
void RenderThreadImpl::OnNetworkTypeChanged(
net::NetworkChangeNotifier::ConnectionType type) {
EnsureWebKitInitialized();
bool online = type != net::NetworkChangeNotifier::CONNECTION_NONE;
WebNetworkStateNotifier::setOnLine(online);
FOR_EACH_OBSERVER(
RenderProcessObserver, observers_, NetworkStateChanged(online));
WebNetworkStateNotifier::setWebConnectionType(
NetConnectionTypeToWebConnectionType(type));
}
void RenderThreadImpl::OnTempCrashWithData(const GURL& data) {
GetContentClient()->SetActiveURL(data);
CHECK(false);
}
void RenderThreadImpl::OnUpdateTimezone(const std::string& zone_id) {
if (!blink_platform_impl_)
return;
if (!zone_id.empty()) {
icu::TimeZone *new_zone = icu::TimeZone::createTimeZone(
icu::UnicodeString::fromUTF8(zone_id));
icu::TimeZone::adoptDefault(new_zone);
VLOG(1) << "ICU default timezone is set to " << zone_id;
}
NotifyTimezoneChange();
}
#if defined(OS_ANDROID)
void RenderThreadImpl::OnSetWebKitSharedTimersSuspended(bool suspend) {
EnsureWebKitInitialized();
// TODO(alexclarke): Remove the shared timer.
if (suspend) {
blink_platform_impl_->SuspendSharedTimer();
renderer_scheduler_->SuspendTimerQueue();
} else {
blink_platform_impl_->ResumeSharedTimer();
renderer_scheduler_->ResumeTimerQueue();
}
webkit_shared_timer_suspended_ = suspend;
}
#endif
#if defined(OS_MACOSX)
void RenderThreadImpl::OnUpdateScrollbarTheme(
float initial_button_delay,
float autoscroll_button_delay,
bool jump_on_track_click,
blink::ScrollerStyle preferred_scroller_style,
bool redraw) {
EnsureWebKitInitialized();
static_cast<WebScrollbarBehaviorImpl*>(
blink_platform_impl_->scrollbarBehavior())
->set_jump_on_track_click(jump_on_track_click);
blink::WebScrollbarTheme::updateScrollbars(initial_button_delay,
autoscroll_button_delay,
preferred_scroller_style,
redraw);
}
#endif
void RenderThreadImpl::OnCreateNewSharedWorker(
const WorkerProcessMsg_CreateWorker_Params& params) {
// EmbeddedSharedWorkerStub will self-destruct.
new EmbeddedSharedWorkerStub(params.url,
params.name,
params.content_security_policy,
params.security_policy_type,
params.pause_on_start,
params.route_id);
}
void RenderThreadImpl::OnMemoryPressure(
base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level) {
base::allocator::ReleaseFreeMemory();
discardable_shared_memory_manager()->ReleaseFreeMemory();
// Do not call into blink if it is not initialized.
if (blink_platform_impl_) {
blink::WebCache::pruneAll();
if (blink::mainThreadIsolate()) {
// Trigger full v8 garbage collection on memory pressure notifications.
// This will potentially hang the renderer for a long time, however, when
// we receive a memory pressure notification, we might be about to be
// killed.
blink::mainThreadIsolate()->LowMemoryNotification();
RenderThread::Get()->PostTaskToAllWebWorkers(
base::Bind(&LowMemoryNotificationOnThisThread));
}
if (memory_pressure_level ==
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL) {
// Clear the image cache.
blink::WebImageCache::clear();
// Purge Skia font cache, by setting it to 0 and then again to the
// previous limit.
size_t font_cache_limit = SkGraphics::SetFontCacheLimit(0);
SkGraphics::SetFontCacheLimit(font_cache_limit);
}
}
}
scoped_refptr<base::MessageLoopProxy>
RenderThreadImpl::GetFileThreadMessageLoopProxy() {
DCHECK(message_loop() == base::MessageLoop::current());
if (!file_thread_) {
file_thread_.reset(new base::Thread("Renderer::FILE"));
file_thread_->Start();
}
return file_thread_->message_loop_proxy();
}
scoped_refptr<base::SingleThreadTaskRunner>
RenderThreadImpl::GetMediaThreadTaskRunner() {
DCHECK(message_loop() == base::MessageLoop::current());
if (!media_thread_) {
media_thread_.reset(new base::Thread("Media"));
media_thread_->Start();
#if defined(OS_ANDROID)
renderer_demuxer_ = new RendererDemuxerAndroid();
AddFilter(renderer_demuxer_.get());
#endif
}
return media_thread_->message_loop_proxy();
}
void RenderThreadImpl::SampleGamepads(blink::WebGamepads* data) {
blink_platform_impl_->sampleGamepads(*data);
}
bool RenderThreadImpl::RendererIsHidden() const {
return widget_count_ > 0 && hidden_widget_count_ == widget_count_;
}
void RenderThreadImpl::WidgetCreated() {
bool renderer_was_hidden = RendererIsHidden();
widget_count_++;
if (renderer_was_hidden)
OnRendererVisible();
}
void RenderThreadImpl::WidgetDestroyed() {
// TODO(rmcilroy): Remove the restriction that destroyed widgets must be
// unhidden before WidgetDestroyed is called.
DCHECK_GT(widget_count_, 0);
DCHECK_GT(widget_count_, hidden_widget_count_);
widget_count_--;
if (RendererIsHidden())
OnRendererHidden();
}
void RenderThreadImpl::WidgetHidden() {
DCHECK_LT(hidden_widget_count_, widget_count_);
hidden_widget_count_++;
if (RendererIsHidden())
OnRendererHidden();
}
void RenderThreadImpl::WidgetRestored() {
bool renderer_was_hidden = RendererIsHidden();
DCHECK_GT(hidden_widget_count_, 0);
hidden_widget_count_--;
if (renderer_was_hidden)
OnRendererVisible();
}
void RenderThreadImpl::OnRendererHidden() {
renderer_scheduler_->OnRendererHidden();
// TODO(rmcilroy): Remove IdleHandler and replace it with an IdleTask
// scheduled by the RendererScheduler - http://crbug.com/469210.
if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
ScheduleIdleHandler(kInitialIdleHandlerDelayMs);
}
void RenderThreadImpl::OnRendererVisible() {
renderer_scheduler_->OnRendererVisible();
if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
return;
ScheduleIdleHandler(kLongIdleHandlerDelayMs);
}
RenderThreadImpl::PendingRenderFrameConnect::PendingRenderFrameConnect(
int routing_id,
mojo::InterfaceRequest<mojo::ServiceProvider> services,
mojo::ServiceProviderPtr exposed_services)
: routing_id_(routing_id),
services_(services.Pass()),
exposed_services_(exposed_services.Pass()) {
// The RenderFrame may be deleted before the ExchangeServiceProviders message
// is received. In that case, the RenderFrameHost should close the connection,
// which is detected by setting an error handler on |exposed_services_|.
exposed_services_.set_error_handler(this);
}
RenderThreadImpl::PendingRenderFrameConnect::~PendingRenderFrameConnect() {
}
void RenderThreadImpl::PendingRenderFrameConnect::OnConnectionError() {
size_t erased =
RenderThreadImpl::current()->pending_render_frame_connects_.erase(
routing_id_);
DCHECK_EQ(1u, erased);
}
} // namespace content