/
render_thread_impl.cc
1847 lines (1606 loc) · 68.3 KB
/
render_thread_impl.cc
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// Copyright 2012 The Chromium Authors
// 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 <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/allocator/allocator_extension.h"
#include "base/at_exit.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/debug/crash_logging.h"
#include "base/feature_list.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/memory/discardable_memory_allocator.h"
#include "base/memory/scoped_refptr.h"
#include "base/message_loop/message_pump_type.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/histogram_macros_local.h"
#include "base/observer_list.h"
#include "base/path_service.h"
#include "base/process/process_metrics.h"
#include "base/run_loop.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/sys_string_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/bind_post_task.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/threading/simple_thread.h"
#include "base/threading/thread_local.h"
#include "base/threading/thread_restrictions.h"
#include "base/trace_event/memory_dump_manager.h"
#include "base/trace_event/memory_pressure_level_proto.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/typed_macros.h"
#include "base/values.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "cc/base/histograms.h"
#include "cc/base/switches.h"
#include "cc/mojo_embedder/async_layer_tree_frame_sink.h"
#include "cc/raster/task_graph_runner.h"
#include "cc/tiles/image_decode_cache_utils.h"
#include "cc/trees/layer_tree_frame_sink.h"
#include "cc/trees/layer_tree_settings.h"
#include "cc/trees/raster_context_provider_wrapper.h"
#include "cc/trees/ukm_manager.h"
#include "components/discardable_memory/client/client_discardable_shared_memory_manager.h"
#include "components/metrics/public/mojom/single_sample_metrics.mojom.h"
#include "components/metrics/single_sample_metrics.h"
#include "components/viz/common/features.h"
#include "components/viz/common/frame_sinks/copy_output_request.h"
#include "components/viz/common/switches.h"
#include "content/child/runtime_features.h"
#include "content/common/buildflags.h"
#include "content/common/content_constants_internal.h"
#include "content/common/content_switches_internal.h"
#include "content/common/main_frame_counter.h"
#include "content/common/partition_alloc_support.h"
#include "content/common/process_visibility_tracker.h"
#include "content/common/pseudonymization_salt.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_paths.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/gpu_stream_constants.h"
#include "content/public/common/url_constants.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_thread_observer.h"
#include "content/renderer/agent_scheduling_group.h"
#include "content/renderer/browser_exposed_renderer_interfaces.h"
#include "content/renderer/effective_connection_type_helper.h"
#include "content/renderer/media/gpu/gpu_video_accelerator_factories_impl.h"
#include "content/renderer/media/media_factory.h"
#include "content/renderer/media/render_media_client.h"
#include "content/renderer/net_info_helper.h"
#include "content/renderer/render_process_impl.h"
#include "content/renderer/renderer_blink_platform_impl.h"
#include "content/renderer/service_worker/service_worker_context_client.h"
#include "content/renderer/variations_render_thread_observer.h"
#include "content/renderer/worker/embedded_shared_worker_stub.h"
#include "content/renderer/worker/worker_thread_registry.h"
#include "device/gamepad/public/cpp/gamepads.h"
#include "gin/public/debug.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/context_support.h"
#include "gpu/command_buffer/client/gles2_interface.h"
#include "gpu/command_buffer/client/raster_interface.h"
#include "gpu/command_buffer/client/shared_memory_limits.h"
#include "gpu/config/gpu_driver_bug_workarounds.h"
#include "gpu/config/gpu_finch_features.h"
#include "gpu/config/gpu_switches.h"
#include "gpu/ipc/client/command_buffer_proxy_impl.h"
#include "gpu/ipc/client/gpu_channel_host.h"
#include "ipc/ipc_channel_handle.h"
#include "ipc/ipc_channel_mojo.h"
#include "ipc/ipc_platform_file.h"
#include "media/base/decoder_factory.h"
#include "media/base/media.h"
#include "media/base/media_switches.h"
#include "media/media_buildflags.h"
#include "media/renderers/default_decoder_factory.h"
#include "media/video/gpu_video_accelerator_factories.h"
#include "mojo/public/cpp/bindings/binder_map.h"
#include "mojo/public/cpp/bindings/callback_helpers.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"
#include "mojo/public/cpp/system/message_pipe.h"
#include "net/base/net_errors.h"
#include "net/base/port_util.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/base/url_util.h"
#include "ppapi/buildflags/buildflags.h"
#include "services/metrics/public/cpp/mojo_ukm_recorder.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "services/network/public/cpp/network_switches.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "services/viz/public/cpp/gpu/context_provider_command_buffer.h"
#include "services/viz/public/cpp/gpu/gpu.h"
#include "skia/ext/skia_memory_dump_provider.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/privacy_budget/active_sampling.h"
#include "third_party/blink/public/common/privacy_budget/identifiability_study_settings.h"
#include "third_party/blink/public/common/switches.h"
#include "third_party/blink/public/platform/modules/video_capture/web_video_capture_impl_manager.h"
#include "third_party/blink/public/platform/scheduler/web_thread_scheduler.h"
#include "third_party/blink/public/platform/web_cache.h"
#include "third_party/blink/public/platform/web_image_generator.h"
#include "third_party/blink/public/platform/web_memory_pressure_listener.h"
#include "third_party/blink/public/platform/web_network_state_notifier.h"
#include "third_party/blink/public/platform/web_runtime_features.h"
#include "third_party/blink/public/platform/web_scoped_page_pauser.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_theme_engine.h"
#include "third_party/blink/public/web/blink.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_frame.h"
#include "third_party/blink/public/web/web_render_theme.h"
#include "third_party/blink/public/web/web_security_policy.h"
#include "third_party/blink/public/web/web_view.h"
#include "third_party/skia/include/core/SkFontMgr.h"
#include "third_party/skia/include/core/SkGraphics.h"
#include "ui/base/layout.h"
#include "ui/base/ui_base_features.h"
#include "ui/base/ui_base_switches.h"
#include "ui/base/ui_base_switches_util.h"
#include "ui/display/display_switches.h"
#include "v8/include/v8-extension.h"
#if BUILDFLAG(IS_ANDROID)
#include <cpu-features.h>
#include "content/renderer/media/android/stream_texture_factory.h"
#include "media/base/android/media_codec_util.h"
#endif
#if BUILDFLAG(IS_MAC)
#include "base/mac/mac_util.h"
#include "content/renderer/theme_helper_mac.h"
#endif
#if BUILDFLAG(IS_WIN)
#include <objbase.h>
#include <windows.h>
#include "content/renderer/media/win/dcomp_texture_factory.h"
#include "content/renderer/media/win/overlay_state_service_provider.h"
#include "media/base/win/mf_feature_checks.h"
#endif
#ifdef ENABLE_VTUNE_JIT_INTERFACE
#include "v8/src/third_party/vtune/v8-vtune.h"
#endif
#if defined(ENABLE_IPC_FUZZER)
#include "content/common/external_ipc_dumper.h"
#include "mojo/public/cpp/bindings/message_dumper.h"
#endif
#if BUILDFLAG(IS_MAC)
#include <malloc/malloc.h>
#else
#include <malloc.h>
#endif
#if BUILDFLAG(CLANG_PROFILING_INSIDE_SANDBOX)
#include "base/test/clang_profiling.h"
#endif
namespace content {
namespace {
using ::base::PassKey;
using ::blink::WebDocument;
using ::blink::WebFrame;
using ::blink::WebNetworkStateNotifier;
using ::blink::WebRuntimeFeatures;
using ::blink::WebSecurityPolicy;
using ::blink::WebString;
using ::blink::WebView;
// An implementation of mojom::RenderMessageFilter which can be mocked out
// for tests which may indirectly send messages over this interface.
mojom::RenderMessageFilter* g_render_message_filter_for_testing;
// An implementation of RendererBlinkPlatformImpl which can be mocked out
// for tests.
RendererBlinkPlatformImpl* g_current_blink_platform_impl_for_testing;
// Keep the global RenderThreadImpl in a TLS slot so it is impossible to access
// incorrectly from the wrong thread.
base::LazyInstance<base::ThreadLocalPointer<RenderThreadImpl>>::DestructorAtExit
lazy_tls = LAZY_INSTANCE_INITIALIZER;
base::LazyInstance<scoped_refptr<base::SingleThreadTaskRunner>>::
DestructorAtExit g_main_task_runner = LAZY_INSTANCE_INITIALIZER;
// v8::MemoryPressureLevel should correspond to base::MemoryPressureListener.
static_assert(static_cast<v8::MemoryPressureLevel>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE) ==
v8::MemoryPressureLevel::kNone,
"none level not align");
static_assert(
static_cast<v8::MemoryPressureLevel>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE) ==
v8::MemoryPressureLevel::kModerate,
"moderate level not align");
static_assert(
static_cast<v8::MemoryPressureLevel>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL) ==
v8::MemoryPressureLevel::kCritical,
"critical level not align");
// Feature to migrate the Media thread to a SequencedTaskRunner backed from
// the base::ThreadPool. Does not currently work on Fuchsia due to FIDL
// requiring thread affinity.
BASE_DECLARE_FEATURE(kUseThreadPoolForMediaTaskRunner){
"UseThreadPoolForMediaTaskRunner", base::FEATURE_DISABLED_BY_DEFAULT};
void AddCrashKey(v8::CrashKeyId id, const std::string& value) {
using base::debug::AllocateCrashKeyString;
using base::debug::CrashKeySize;
using base::debug::SetCrashKeyString;
switch (id) {
case v8::CrashKeyId::kIsolateAddress:
static auto* const isolate_address =
AllocateCrashKeyString("v8_isolate_address", CrashKeySize::Size32);
SetCrashKeyString(isolate_address, value);
break;
case v8::CrashKeyId::kReadonlySpaceFirstPageAddress:
static auto* const ro_space_firstpage_address = AllocateCrashKeyString(
"v8_ro_space_firstpage_address", CrashKeySize::Size32);
SetCrashKeyString(ro_space_firstpage_address, value);
break;
case v8::CrashKeyId::kMapSpaceFirstPageAddress:
static auto* const map_space_firstpage_address = AllocateCrashKeyString(
"v8_map_space_firstpage_address", CrashKeySize::Size32);
SetCrashKeyString(map_space_firstpage_address, value);
break;
case v8::CrashKeyId::kCodeSpaceFirstPageAddress:
static auto* const code_space_firstpage_address = AllocateCrashKeyString(
"v8_code_space_firstpage_address", CrashKeySize::Size32);
SetCrashKeyString(code_space_firstpage_address, value);
break;
case v8::CrashKeyId::kDumpType:
static auto* const dump_type =
AllocateCrashKeyString("dump-type", CrashKeySize::Size32);
SetCrashKeyString(dump_type, value);
break;
default:
// Doing nothing for new keys is a valid option. Having this case allows
// to introduce new CrashKeyId's without triggering a build break.
break;
}
}
scoped_refptr<viz::ContextProviderCommandBuffer> CreateOffscreenContext(
scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
const gpu::SharedMemoryLimits& limits,
bool support_locking,
bool support_gles2_interface,
bool support_raster_interface,
bool support_oop_rasterization,
bool support_grcontext,
bool automatic_flushes,
viz::command_buffer_metrics::ContextType type,
int32_t stream_id,
gpu::SchedulingPriority stream_priority) {
DCHECK(gpu_channel_host);
// This is used to create a few different offscreen contexts:
// - The shared main thread context, used by blink for 2D Canvas.
// - The compositor worker context, used for GPU raster.
// - The media context, used for accelerated video decoding.
// This is for an offscreen context, so the default framebuffer doesn't need
// alpha, depth, stencil, antialiasing.
gpu::ContextCreationAttribs attributes;
attributes.alpha_size = -1;
attributes.depth_size = 0;
attributes.stencil_size = 0;
attributes.samples = 0;
attributes.sample_buffers = 0;
attributes.bind_generates_resource = false;
attributes.lose_context_when_out_of_memory = true;
attributes.enable_gles2_interface = support_gles2_interface;
attributes.enable_raster_interface = support_raster_interface;
attributes.enable_grcontext = support_grcontext;
// Using RasterDecoder for OOP-R backend, so we need support_raster_interface
// and !support_gles2_interface.
attributes.enable_oop_rasterization = support_oop_rasterization &&
support_raster_interface &&
!support_gles2_interface;
return base::MakeRefCounted<viz::ContextProviderCommandBuffer>(
std::move(gpu_channel_host), gpu_memory_buffer_manager, stream_id,
stream_priority, gpu::kNullSurfaceHandle,
GURL("chrome://gpu/RenderThreadImpl::CreateOffscreenContext/" +
viz::command_buffer_metrics::ContextTypeToString(type)),
automatic_flushes, support_locking, support_grcontext, limits, attributes,
type);
}
// Hook that allows single-sample metric code from //components/metrics to
// connect from the renderer process to the browser process.
void CreateSingleSampleMetricsProvider(
mojo::SharedRemote<mojom::ChildProcessHost> process_host,
mojo::PendingReceiver<metrics::mojom::SingleSampleMetricsProvider>
receiver) {
process_host->BindHostReceiver(std::move(receiver));
}
static bool IsSingleProcess() {
return base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kSingleProcess);
}
} // namespace
RenderThreadImpl::HistogramCustomizer::HistogramCustomizer() {
custom_histograms_.insert("V8.MemoryExternalFragmentationTotal");
custom_histograms_.insert("V8.MemoryHeapSampleTotalCommitted");
custom_histograms_.insert("V8.MemoryHeapSampleTotalUsed");
custom_histograms_.insert("V8.MemoryHeapUsed");
custom_histograms_.insert("V8.MemoryHeapCommitted");
}
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);
}
}
std::string RenderThreadImpl::HistogramCustomizer::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";
if (host == "inbox.google.com")
return ".inbox";
if (host == "calendar.google.com")
return ".calendar";
if (host == "www.youtube.com")
return ".youtube";
if (IsAlexaTop10NonGoogleSite(host))
return ".top10";
return std::string();
}
bool RenderThreadImpl::HistogramCustomizer::IsAlexaTop10NonGoogleSite(
const std::string& host) {
// The Top10 sites have different TLD and/or subdomains depending on the
// localization.
if (host == "sina.com.cn")
return true;
std::string sanitized_host =
net::registry_controlled_domains::GetDomainAndRegistry(
host, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
if (sanitized_host == "facebook.com")
return true;
if (sanitized_host == "baidu.com")
return true;
if (sanitized_host == "qq.com")
return true;
if (sanitized_host == "twitter.com")
return true;
if (sanitized_host == "taobao.com")
return true;
if (sanitized_host == "live.com")
return true;
if (!sanitized_host.empty()) {
std::vector<base::StringPiece> host_tokens = base::SplitStringPiece(
sanitized_host, ".", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
if (host_tokens.size() >= 2) {
if ((host_tokens[0] == "yahoo") || (host_tokens[0] == "amazon") ||
(host_tokens[0] == "wikipedia")) {
return true;
}
}
}
return false;
}
// static
RenderThreadImpl* RenderThreadImpl::current() {
return lazy_tls.Pointer()->Get();
}
// static
mojom::RenderMessageFilter* RenderThreadImpl::current_render_message_filter() {
if (g_render_message_filter_for_testing)
return g_render_message_filter_for_testing;
DCHECK(current());
return current()->render_message_filter();
}
// static
RendererBlinkPlatformImpl* RenderThreadImpl::current_blink_platform_impl() {
if (g_current_blink_platform_impl_for_testing)
return g_current_blink_platform_impl_for_testing;
DCHECK(current());
return current()->blink_platform_impl();
}
// static
void RenderThreadImpl::SetRenderMessageFilterForTesting(
mojom::RenderMessageFilter* render_message_filter) {
g_render_message_filter_for_testing = render_message_filter;
}
// static
void RenderThreadImpl::SetRendererBlinkPlatformImplForTesting(
RendererBlinkPlatformImpl* blink_platform_impl) {
g_current_blink_platform_impl_for_testing = blink_platform_impl;
}
// static
scoped_refptr<base::SingleThreadTaskRunner>
RenderThreadImpl::DeprecatedGetMainTaskRunner() {
return g_main_task_runner.Get();
}
// In single-process mode used for debugging, we don't pass a renderer client
// ID via command line because RenderThreadImpl lives in the same process as
// the browser
RenderThreadImpl::RenderThreadImpl(
const InProcessChildThreadParams& params,
int32_t client_id,
std::unique_ptr<blink::scheduler::WebThreadScheduler> scheduler)
: ChildThreadImpl(
base::DoNothing(),
Options::Builder()
.InBrowserProcess(params)
.ConnectToBrowser(true)
.IPCTaskRunner(scheduler->DeprecatedDefaultTaskRunner())
.ExposesInterfacesToBrowser()
.Build()),
main_thread_scheduler_(std::move(scheduler)),
client_id_(client_id) {
TRACE_EVENT0("startup", "RenderThreadImpl::Create");
Init();
}
namespace {
int32_t GetClientIdFromCommandLine() {
DCHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kRendererClientId));
int32_t client_id;
base::StringToInt(base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kRendererClientId),
&client_id);
return client_id;
}
} // anonymous namespace
// Multi-process mode.
RenderThreadImpl::RenderThreadImpl(
base::RepeatingClosure quit_closure,
std::unique_ptr<blink::scheduler::WebThreadScheduler> scheduler)
: ChildThreadImpl(
std::move(quit_closure),
Options::Builder()
.ConnectToBrowser(true)
.IPCTaskRunner(scheduler->DeprecatedDefaultTaskRunner())
.ExposesInterfacesToBrowser()
.Build()),
main_thread_scheduler_(std::move(scheduler)),
client_id_(GetClientIdFromCommandLine()) {
TRACE_EVENT0("startup", "RenderThreadImpl::Create");
Init();
}
void RenderThreadImpl::Init() {
TRACE_EVENT0("startup", "RenderThreadImpl::Init");
SCOPED_UMA_HISTOGRAM_TIMER("Renderer.RenderThreadImpl.Init");
GetContentClient()->renderer()->PostIOThreadCreated(GetIOTaskRunner().get());
base::trace_event::TraceLog::GetInstance()->SetThreadSortIndex(
base::PlatformThread::CurrentId(),
kTraceEventRendererMainThreadSortIndex);
#if BUILDFLAG(USE_EXTERNAL_POPUP_MENU)
// On Mac and Android Java UI, the select popups are rendered by the browser.
#if BUILDFLAG(IS_MAC)
// When UseCommonSelectPopup is enabled, the internal popup menu should be
// used.
if (!features::IsUseCommonSelectPopupEnabled())
#endif
blink::WebView::SetUseExternalPopupMenus(true);
#endif
lazy_tls.Pointer()->Set(this);
g_main_task_runner.Get() = base::SingleThreadTaskRunner::GetCurrentDefault();
// Register this object as the main thread.
ChildProcess::current()->set_main_thread(this);
metrics::InitializeSingleSampleMetricsFactory(base::BindRepeating(
&CreateSingleSampleMetricsProvider, child_process_host()));
mojo::PendingRemote<viz::mojom::Gpu> remote_gpu;
BindHostReceiver(remote_gpu.InitWithNewPipeAndPassReceiver());
gpu_ = viz::Gpu::Create(std::move(remote_gpu), GetIOTaskRunner());
// Establish the GPU channel now, so its ready when needed and we don't have
// to wait on a sync call.
if (base::FeatureList::IsEnabled(features::kEarlyEstablishGpuChannel)) {
gpu_->EstablishGpuChannel(
base::BindOnce([](scoped_refptr<gpu::GpuChannelHost> host) {
if (host)
GetContentClient()->SetGpuInfo(host->gpu_info());
}));
}
// NOTE: Do not add interfaces to |binders| within this method. Instead,
// modify the definition of |ExposeRendererInterfacesToBrowser()| to ensure
// security review coverage.
mojo::BinderMap binders;
InitializeWebKit(&binders);
vc_manager_ = std::make_unique<blink::WebVideoCaptureImplManager>();
GetContentClient()->renderer()->RenderThreadStarted();
ExposeRendererInterfacesToBrowser(weak_factory_.GetWeakPtr(), &binders);
ExposeInterfacesToBrowser(std::move(binders));
url_loader_throttle_provider_ =
GetContentClient()->renderer()->CreateURLLoaderThrottleProvider(
blink::URLLoaderThrottleProviderType::kFrame);
GetAssociatedInterfaceRegistry()->AddInterface<mojom::Renderer>(
base::BindRepeating(&RenderThreadImpl::OnRendererInterfaceReceiver,
base::Unretained(this)));
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
#if defined(ENABLE_IPC_FUZZER)
if (command_line.HasSwitch(switches::kIpcDumpDirectory)) {
base::FilePath dump_directory =
command_line.GetSwitchValuePath(switches::kIpcDumpDirectory);
IPC::ChannelProxy::OutgoingMessageFilter* filter =
LoadExternalIPCDumper(dump_directory);
GetChannel()->set_outgoing_message_filter(filter);
mojo::MessageDumper::SetMessageDumpDirectory(dump_directory);
}
#endif
cc::SetClientNameForMetrics("Renderer");
is_threaded_animation_enabled_ =
!command_line.HasSwitch(cc::switches::kDisableThreadedAnimation);
is_elastic_overscroll_enabled_ = switches::IsElasticOverscrollEnabled();
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 BUILDFLAG(IS_ANDROID)
is_lcd_text_enabled_ = false;
#elif BUILDFLAG(IS_MAC)
is_lcd_text_enabled_ = IsSubpixelAntialiasingAvailable();
#else
is_lcd_text_enabled_ = true;
#endif
}
if (command_line.HasSwitch(switches::kDisableGpuCompositing))
is_gpu_compositing_disabled_ = true;
// 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_ = std::make_unique<base::MemoryPressureListener>(
FROM_HERE,
base::BindRepeating(&RenderThreadImpl::OnMemoryPressure,
base::Unretained(this)),
base::BindRepeating(&RenderThreadImpl::OnSyncMemoryPressure,
base::Unretained(this)));
discardable_memory_allocator_ = CreateDiscardableMemoryAllocator();
// TODO(boliu): In single process, browser main loop should set up the
// discardable memory manager, and should skip this if kSingleProcess.
// See crbug.com/503724.
base::DiscardableMemoryAllocator::SetInstance(
discardable_memory_allocator_.get());
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
render_message_filter()->SetThreadType(
ChildProcess::current()->io_thread_id(), base::ThreadType::kCompositing);
#endif
process_foregrounded_count_ = 0;
if (!is_gpu_compositing_disabled_) {
BindHostReceiver(compositing_mode_reporter_.BindNewPipeAndPassReceiver());
compositing_mode_reporter_->AddCompositingModeWatcher(
compositing_mode_watcher_receiver_.BindNewPipeAndPassRemote(
main_thread_scheduler_->CompositorTaskRunner()));
}
variations_observer_ = std::make_unique<VariationsRenderThreadObserver>();
AddObserver(variations_observer_.get());
base::ThreadPool::PostTask(FROM_HERE,
base::BindOnce([] { SkFontMgr::RefDefault(); }));
bool should_actively_sample_fonts =
command_line.HasSwitch(kFirstRendererProcess) &&
blink::IdentifiabilityStudySettings::Get()->ShouldActivelySample() &&
!blink::IdentifiabilityStudySettings::Get()
->FontFamiliesToActivelySample()
.empty();
if (should_actively_sample_fonts) {
mojo::PendingRemote<ukm::mojom::UkmRecorderInterface> recorder;
RenderThread::Get()->BindHostReceiver(
recorder.InitWithNewPipeAndPassReceiver());
scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner =
base::ThreadPool::CreateSequencedTaskRunner(
{base::TaskPriority::BEST_EFFORT, base::MayBlock(),
base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN});
sequenced_task_runner->PostTask(
FROM_HERE,
base::BindOnce(
[](mojo::PendingRemote<ukm::mojom::UkmRecorderInterface> recorder) {
auto ukm_recorder =
std::make_unique<ukm::MojoUkmRecorder>(std::move(recorder));
blink::IdentifiabilityActiveSampler::ActivelySampleAvailableFonts(
ukm_recorder.get());
},
std::move(recorder)));
}
}
RenderThreadImpl::~RenderThreadImpl() {
g_main_task_runner.Get() = nullptr;
// Need to make sure this reference is removed on the correct task runner;
if (video_frame_compositor_thread_ &&
video_frame_compositor_context_provider_) {
video_frame_compositor_thread_->task_runner()->ReleaseSoon(
FROM_HERE, std::move(video_frame_compositor_context_provider_));
}
}
void RenderThreadImpl::Shutdown() {
ChildThreadImpl::Shutdown();
// In a multi-process mode, we immediately exit the renderer.
// Historically we had a graceful shutdown sequence here but it was
// 1) a waste of performance and 2) a source of lots of complicated
// crashes caused by shutdown ordering. Immediate exit eliminates
// those problems.
blink::LogStatsDuringShutdown();
// In a single-process mode, we cannot call _exit(0) in Shutdown() because
// it will exit the process before the browser side is ready to exit.
if (!IsSingleProcess())
base::Process::TerminateCurrentProcessImmediately(0);
}
bool RenderThreadImpl::ShouldBeDestroyed() {
DCHECK(IsSingleProcess());
// In a single-process mode, it is unsafe to destruct this renderer thread
// because we haven't run the shutdown sequence. Hence we leak the render
// thread.
//
// In this case, we also need to disable at-exit callbacks because some of
// the at-exit callbacks are expected to run after the renderer thread
// has been destructed.
base::AtExitManager::DisableAllAtExitManagers();
return false;
}
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();
}
void RenderThreadImpl::AddRoute(int32_t routing_id, IPC::Listener* listener) {
ChildThreadImpl::GetRouter()->AddRoute(routing_id, listener);
}
void RenderThreadImpl::AttachTaskRunnerToRoute(
int32_t routing_id,
scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
GetChannel()->AddListenerTaskRunner(routing_id, std::move(task_runner));
}
void RenderThreadImpl::RemoveRoute(int32_t routing_id) {
ChildThreadImpl::GetRouter()->RemoveRoute(routing_id);
GetChannel()->RemoveListenerTaskRunner(routing_id);
pending_frames_.erase(routing_id);
}
mojom::RendererHost* RenderThreadImpl::GetRendererHost() {
if (!renderer_host_) {
DCHECK(GetChannel());
GetChannel()->GetRemoteAssociatedInterface(&renderer_host_);
}
return renderer_host_.get();
}
int RenderThreadImpl::GenerateRoutingID() {
int32_t routing_id = MSG_ROUTING_NONE;
render_message_filter()->GenerateRoutingID(&routing_id);
return routing_id;
}
bool RenderThreadImpl::GenerateFrameRoutingID(
int32_t& routing_id,
blink::LocalFrameToken& frame_token,
base::UnguessableToken& devtools_frame_token,
blink::DocumentToken& document_token) {
return render_message_filter()->GenerateFrameRoutingID(
&routing_id, &frame_token, &devtools_frame_token, &document_token);
}
void RenderThreadImpl::AddFilter(IPC::MessageFilter* filter) {
channel()->AddFilter(filter);
}
void RenderThreadImpl::RemoveFilter(IPC::MessageFilter* filter) {
channel()->RemoveFilter(filter);
}
void RenderThreadImpl::AddObserver(RenderThreadObserver* observer) {
observers_.AddObserver(observer);
observer->RegisterMojoInterfaces(&associated_interfaces_);
}
void RenderThreadImpl::RemoveObserver(RenderThreadObserver* observer) {
observer->UnregisterMojoInterfaces(&associated_interfaces_);
observers_.RemoveObserver(observer);
}
void RenderThreadImpl::SetResourceRequestSenderDelegate(
blink::WebResourceRequestSenderDelegate* delegate) {
resource_request_sender_delegate_ = delegate;
}
void RenderThreadImpl::InitializeCompositorThread() {
blink_platform_impl_->CreateAndSetCompositorThread();
compositor_task_runner_ = blink_platform_impl_->CompositorThreadTaskRunner();
compositor_task_runner_->PostTask(FROM_HERE,
base::BindOnce(&base::DisallowBlocking));
GetContentClient()->renderer()->PostCompositorThreadCreated(
compositor_task_runner_.get());
}
scoped_refptr<base::SingleThreadTaskRunner>
RenderThreadImpl::CreateVideoFrameCompositorTaskRunner() {
if (!video_frame_compositor_thread_) {
// All of Chromium's GPU code must know which thread it's running on, and
// be the same thread on which the rendering context was initialized. This
// is why this must be a SingleThreadTaskRunner instead of a
// SequencedTaskRunner.
video_frame_compositor_thread_ =
std::make_unique<base::Thread>("VideoFrameCompositor");
video_frame_compositor_thread_->StartWithOptions(
base::Thread::Options(base::ThreadType::kCompositing));
}
return video_frame_compositor_thread_->task_runner();
}
void RenderThreadImpl::InitializeWebKit(mojo::BinderMap* binders) {
DCHECK(!blink_platform_impl_);
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
blink_platform_impl_ =
std::make_unique<RendererBlinkPlatformImpl>(main_thread_scheduler_.get());
// This, among other things, enables any feature marked "test" in
// runtime_enabled_features. It is run before
// SetRuntimeFeaturesDefaultsAndUpdateFromArgs() so that command line
// arguments take precedence over (and can disable) "test" features.
GetContentClient()
->renderer()
->SetRuntimeFeaturesDefaultsBeforeBlinkInitialization();
SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line);
blink::Initialize(blink_platform_impl_.get(), binders,
main_thread_scheduler_.get());
v8::Isolate* isolate = blink::MainThreadIsolate();
isolate->SetAddCrashKeyCallback(AddCrashKey);
if (!command_line.HasSwitch(switches::kDisableThreadedCompositing))
InitializeCompositorThread();
RenderThreadImpl::RegisterSchemes();
RenderMediaClient::Initialize();
if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
// If we do not track widget visibility, then assume conservatively that
// the isolate is in background. This reduces memory usage.
isolate->IsolateInBackgroundNotification();
}
if (base::FeatureList::IsEnabled(
features::kLowerV8MemoryLimitForNonMainRenderers)) {
isolate->IsolateInBackgroundNotification();
}
// Hook up blink's codecs so skia can call them. Since only the renderer
// processes should be doing image decoding, this is not done in the common
// skia initialization code for the GPU.
SkGraphics::SetImageGeneratorFromEncodedDataFactory(
blink::WebImageGenerator::CreateAsSkImageGenerator);
}
void RenderThreadImpl::InitializeRenderer(
const std::string& user_agent,
const std::string& full_user_agent,
const std::string& reduced_user_agent,
const blink::UserAgentMetadata& user_agent_metadata,
const std::vector<std::string>& cors_exempt_header_list,
blink::mojom::AttributionOsSupport attribution_os_support) {
DCHECK(user_agent_.IsNull());
DCHECK(reduced_user_agent_.IsNull());
DCHECK(full_user_agent_.IsNull());
user_agent_ = WebString::FromUTF8(user_agent);
GetContentClient()->renderer()->DidSetUserAgent(user_agent);
full_user_agent_ = WebString::FromUTF8(full_user_agent);
reduced_user_agent_ = WebString::FromUTF8(reduced_user_agent);
user_agent_metadata_ = user_agent_metadata;
cors_exempt_header_list_ = cors_exempt_header_list;
attribution_os_support_ = attribution_os_support;
}
void RenderThreadImpl::RegisterSchemes() {
// chrome:
WebString chrome_scheme(WebString::FromASCII(kChromeUIScheme));
WebSecurityPolicy::RegisterURLSchemeAsDisplayIsolated(chrome_scheme);
WebSecurityPolicy::RegisterURLSchemeAsNotAllowingJavascriptURLs(
chrome_scheme);
WebSecurityPolicy::RegisterURLSchemeAsWebUI(chrome_scheme);
// Service workers for chrome://
if (base::FeatureList::IsEnabled(
features::kEnableServiceWorkersForChromeScheme)) {
WebSecurityPolicy::RegisterURLSchemeAsAllowingServiceWorkers(chrome_scheme);
}
WebString chrome_untrusted_scheme(
WebString::FromASCII(kChromeUIUntrustedScheme));
// chrome-untrusted:
// Service workers for chrome-untrusted://
if (base::FeatureList::IsEnabled(
features::kEnableServiceWorkersForChromeUntrusted)) {
WebSecurityPolicy::RegisterURLSchemeAsAllowingServiceWorkers(
chrome_untrusted_scheme);
}
WebSecurityPolicy::RegisterURLSchemeAsNotAllowingJavascriptURLs(
chrome_untrusted_scheme);
WebSecurityPolicy::RegisterURLSchemeAsSupportingFetchAPI(
chrome_untrusted_scheme);
WebSecurityPolicy::RegisterURLSchemeAsAllowingWasmEvalCSP(
chrome_untrusted_scheme);
if (base::FeatureList::IsEnabled(features::kWebUICodeCache)) {
WebSecurityPolicy::RegisterURLSchemeAsCodeCacheWithHashing(chrome_scheme);
WebSecurityPolicy::RegisterURLSchemeAsCodeCacheWithHashing(
chrome_untrusted_scheme);
}
// devtools:
WebString devtools_scheme(WebString::FromASCII(kChromeDevToolsScheme));
WebSecurityPolicy::RegisterURLSchemeAsDisplayIsolated(devtools_scheme);
WebSecurityPolicy::RegisterURLSchemeAsSupportingFetchAPI(devtools_scheme);
WebSecurityPolicy::RegisterURLSchemeAsNotAllowingJavascriptURLs(
devtools_scheme);
// view-source:
WebString view_source_scheme(WebString::FromASCII(kViewSourceScheme));
WebSecurityPolicy::RegisterURLSchemeAsDisplayIsolated(view_source_scheme);
// chrome-error:
WebString error_scheme(WebString::FromASCII(kChromeErrorScheme));
WebSecurityPolicy::RegisterURLSchemeAsDisplayIsolated(error_scheme);
WebSecurityPolicy::RegisterURLSchemeAsNotAllowingJavascriptURLs(error_scheme);
WebSecurityPolicy::RegisterURLSchemeAsError(error_scheme);
// googlechrome:
WebString google_chrome_scheme(WebString::FromASCII(kGoogleChromeScheme));
WebSecurityPolicy::RegisterURLSchemeAsDisplayIsolated(google_chrome_scheme);
}
void RenderThreadImpl::RecordAction(const base::UserMetricsAction& action) {
GetRendererHost()->RecordUserMetricsAction(action.str_);
}
void RenderThreadImpl::RecordComputedAction(const std::string& action) {
GetRendererHost()->RecordUserMetricsAction(action);
}