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content / gpu / gpu_main.cc [blame]
// 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 <stddef.h>
#include <stdlib.h>
#include <memory>
#include <tuple>
#include <utility>
#include "base/allocator/partition_alloc_support.h"
#include "base/check.h"
#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/message_loop/message_pump_type.h"
#include "base/metrics/histogram_macros.h"
#include "base/numerics/clamped_math.h"
#include "base/process/current_process.h"
#include "base/process/process_metrics.h"
#include "base/rand_util.h"
#include "base/run_loop.h"
#include "base/strings/string_number_conversions.h"
#include "base/system/sys_info.h"
#include "base/task/current_thread.h"
#include "base/task/single_thread_task_executor.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "base/timer/hi_res_timer_manager.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "components/viz/service/main/viz_main_impl.h"
#include "content/child/child_process.h"
#include "content/common/content_constants_internal.h"
#include "content/common/content_switches_internal.h"
#include "content/common/features.h"
#include "content/common/skia_utils.h"
#include "content/gpu/gpu_child_thread.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "content/public/common/result_codes.h"
#include "content/public/gpu/content_gpu_client.h"
#include "gpu/command_buffer/service/gpu_switches.h"
#include "gpu/config/gpu_driver_bug_list.h"
#include "gpu/config/gpu_finch_features.h"
#include "gpu/config/gpu_info_collector.h"
#include "gpu/config/gpu_preferences.h"
#include "gpu/config/gpu_switches.h"
#include "gpu/config/gpu_util.h"
#include "gpu/ipc/common/gpu_memory_buffer_support.h"
#include "gpu/ipc/service/gpu_config.h"
#include "gpu/ipc/service/gpu_init.h"
#include "gpu/ipc/service/gpu_watchdog_thread.h"
#include "media/gpu/buildflags.h"
#include "mojo/public/cpp/bindings/interface_endpoint_client.h"
#include "mojo/public/cpp/bindings/sync_call_restrictions.h"
#include "services/tracing/public/cpp/trace_startup.h"
#include "third_party/angle/src/gpu_info_util/SystemInfo.h"
#include "ui/base/ui_base_features.h"
#include "ui/events/platform/platform_event_source.h"
#include "ui/gfx/switches.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_features.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_surface.h"
#include "ui/gl/gl_switches.h"
#include "ui/gl/gpu_switching_manager.h"
#include "ui/gl/init/gl_factory.h"
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#include <dwmapi.h>
#endif
#if BUILDFLAG(IS_ANDROID)
#include "base/android/meminfo_dump_provider.h"
#include "base/trace_event/memory_dump_manager.h"
#include "components/tracing/common/graphics_memory_dump_provider_android.h"
#endif
#if BUILDFLAG(IS_WIN)
#include "base/trace_event/trace_event_etw_export_win.h"
#include "base/win/scoped_com_initializer.h"
#include "base/win/win_util.h"
#include "base/win/windows_version.h"
#include "media/base/win/mf_initializer.h"
#include "sandbox/policy/win/sandbox_warmup.h"
#include "sandbox/win/src/sandbox.h"
#endif
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include "content/child/sandboxed_process_thread_type_handler.h"
#include "content/common/gpu_pre_sandbox_hook_linux.h"
#include "sandbox/policy/linux/sandbox_linux.h"
#include "sandbox/policy/sandbox_type.h"
#endif
#if BUILDFLAG(IS_MAC)
#include "base/message_loop/message_pump_apple.h"
#include "components/metal_util/device_removal.h"
#include "gpu/ipc/service/built_in_shader_cache_loader.h"
#include "sandbox/mac/seatbelt.h"
#endif
#if BUILDFLAG(USE_VAAPI)
#include "media/gpu/vaapi/vaapi_wrapper.h"
#endif
namespace content {
namespace {
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
bool StartSandboxLinux(gpu::GpuWatchdogThread*,
const gpu::GPUInfo*,
const gpu::GpuPreferences&);
#elif BUILDFLAG(IS_WIN)
bool StartSandboxWindows(const sandbox::SandboxInterfaceInfo*);
#endif
class ContentSandboxHelper : public gpu::GpuSandboxHelper {
public:
ContentSandboxHelper() {}
ContentSandboxHelper(const ContentSandboxHelper&) = delete;
ContentSandboxHelper& operator=(const ContentSandboxHelper&) = delete;
~ContentSandboxHelper() override {}
#if BUILDFLAG(IS_WIN)
void set_sandbox_info(const sandbox::SandboxInterfaceInfo* info) {
sandbox_info_ = info;
}
#endif
private:
// SandboxHelper:
void PreSandboxStartup(const gpu::GpuPreferences& gpu_prefs) override {
// Warm up resources that don't need access to GPUInfo.
{
TRACE_EVENT0("gpu", "Warm up rand");
// Warm up the random subsystem, which needs to be done pre-sandbox on all
// platforms.
#if BUILDFLAG(IS_WIN)
sandbox::policy::WarmupRandomnessInfrastructure();
#else
std::ignore = base::RandUint64();
#endif // BUILDFLAG(IS_WIN)
}
#if BUILDFLAG(USE_VAAPI)
#if BUILDFLAG(IS_CHROMEOS)
media::VaapiWrapper::PreSandboxInitialization();
#else // For Linux with VA-API support.
if (!gpu_prefs.disable_accelerated_video_decode)
media::VaapiWrapper::PreSandboxInitialization();
#endif
#endif // BUILDFLAG(USE_VAAPI)
#if BUILDFLAG(IS_WIN)
media::PreSandboxMediaFoundationInitialization();
#endif
// On Linux, reading system memory doesn't work through the GPU sandbox.
// This value is cached, so access it here to populate the cache.
base::SysInfo::AmountOfPhysicalMemory();
}
bool EnsureSandboxInitialized(gpu::GpuWatchdogThread* watchdog_thread,
const gpu::GPUInfo* gpu_info,
const gpu::GpuPreferences& gpu_prefs) override {
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
return StartSandboxLinux(watchdog_thread, gpu_info, gpu_prefs);
#elif BUILDFLAG(IS_WIN)
return StartSandboxWindows(sandbox_info_);
#elif BUILDFLAG(IS_MAC)
return sandbox::Seatbelt::IsSandboxed();
#else
return false;
#endif
}
#if BUILDFLAG(IS_WIN)
raw_ptr<const sandbox::SandboxInterfaceInfo> sandbox_info_ = nullptr;
#endif
};
void LoadMetalShaderCacheIfNecessary() {
#if BUILDFLAG(IS_MAC)
if (base::FeatureList::IsEnabled(features::kUseBuiltInMetalShaderCache)) {
gpu::BuiltInShaderCacheLoader::StartLoading();
}
#endif
}
} // namespace
// Main function for starting the Gpu process.
int GpuMain(MainFunctionParams parameters) {
TRACE_EVENT0("gpu", "GpuMain");
base::CurrentProcess::GetInstance().SetProcessType(
base::CurrentProcessType::PROCESS_GPU);
base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex(
kTraceEventGpuProcessSortIndex);
const base::CommandLine& command_line = *parameters.command_line;
// Start this early on as it reads from a file (in the background) and full
// startup is gated by this completing.
LoadMetalShaderCacheIfNecessary();
gpu::GpuPreferences gpu_preferences;
if (command_line.HasSwitch(switches::kGpuPreferences)) {
std::string value =
command_line.GetSwitchValueASCII(switches::kGpuPreferences);
bool success = gpu_preferences.FromSwitchValue(value);
CHECK(success);
}
// Disallow sending sync IPCs from the GPU process, in particular CrGpuMain
// and VizCompositorThreads. Incoming sync IPCs can be received out of order
// when waiting on response to an outgoing sync IPC. Both viz and gpu
// interfaces rely on receiving messages in order so this message reordering
// would break things.
mojo::SyncCallRestrictions::DisallowSyncCall();
if (gpu_preferences.gpu_startup_dialog)
WaitForDebugger("Gpu");
base::TimeTicks start_time = base::TimeTicks::Now();
#if BUILDFLAG(IS_WIN)
base::win::EnableHighDPISupport();
// Prevent Windows from displaying a modal dialog on failures like not being
// able to load a DLL.
SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX |
SEM_NOOPENFILEERRORBOX);
// COM is used by some Windows Media Foundation calls made on this thread and
// must be MTA so we don't have to worry about pumping messages to handle
// COM callbacks.
base::win::ScopedCOMInitializer com_initializer(
base::win::ScopedCOMInitializer::kMTA);
// A higher priority class is used for the GPU process so that it remains at
// a higher priority than renderer processes.
::SetPriorityClass(::GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS);
#endif
// Installs a base::LogMessageHandlerFunction which ensures messages are sent
// to the GpuProcessHost once the GpuServiceImpl has started.
viz::GpuServiceImpl::InstallPreInitializeLogHandler();
// We are experiencing what appear to be memory-stomp issues in the GPU
// process. These issues seem to be impacting the task executor and listeners
// registered to it. Create the task executor on the heap to guard against
// this.
// TODO(ericrk): Revisit this once we assess its impact on crbug.com/662802
// and crbug.com/609252.
std::unique_ptr<base::SingleThreadTaskExecutor> main_thread_task_executor;
std::unique_ptr<ui::PlatformEventSource> event_source;
if (command_line.HasSwitch(switches::kHeadless)) {
#if BUILDFLAG(IS_MAC)
// CADisplayLink (Mac HW VSync) callback only works with NS_RUNLOOP.
main_thread_task_executor =
std::make_unique<base::SingleThreadTaskExecutor>(
base::MessagePumpType::NS_RUNLOOP);
main_thread_task_executor->SetWorkBatchSize(2);
#else
main_thread_task_executor =
std::make_unique<base::SingleThreadTaskExecutor>(
base::MessagePumpType::DEFAULT);
#endif
} else {
#if BUILDFLAG(IS_WIN)
// The GpuMain thread should not be pumping Windows messages because no UI
// is expected to run on this thread.
main_thread_task_executor =
std::make_unique<base::SingleThreadTaskExecutor>(
base::MessagePumpType::DEFAULT);
#elif BUILDFLAG(IS_OZONE)
// The MessagePump type required depends on the Ozone platform selected at
// runtime.
if (!main_thread_task_executor) {
main_thread_task_executor =
std::make_unique<base::SingleThreadTaskExecutor>(
gpu_preferences.message_pump_type);
}
#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#error "Unsupported Linux platform."
#elif BUILDFLAG(IS_MAC)
// Cross-process CoreAnimation requires a CFRunLoop to function at all, and
// requires a NSRunLoop to not starve under heavy load. See:
// https://crbug.com/312462#c51 and https://crbug.com/783298
// CADisplayLink (Mac HW VSync) callback only works with NS_RUNLOOP. DEFAULT
// type does not support NSObject.
main_thread_task_executor =
std::make_unique<base::SingleThreadTaskExecutor>(
base::MessagePumpType::NS_RUNLOOP);
// As part of the migration to DoWork(), this policy is required to keep
// previous behavior and avoid regressions.
// TODO(crbug.com/40668161): Consider updating the policy.
main_thread_task_executor->SetWorkBatchSize(2);
#else
main_thread_task_executor =
std::make_unique<base::SingleThreadTaskExecutor>(
base::MessagePumpType::DEFAULT);
#endif
}
base::PlatformThread::SetName("CrGpuMain");
mojo::InterfaceEndpointClient::SetThreadNameSuffixForMetrics("GpuMain");
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
// Thread type delegate of the process should be registered before
// thread type change below for the main thread and for thread pool in
// ChildProcess constructor.
// It also needs to be registered before the process has multiple threads,
// which may race with application of the sandbox. InitializeAndStartSandbox()
// sandboxes the process and starts threads so this has to happen first.
if (base::FeatureList::IsEnabled(
features::kHandleChildThreadTypeChangesInBrowser) ||
base::FeatureList::IsEnabled(features::kSchedQoSOnResourcedForChrome)) {
SandboxedProcessThreadTypeHandler::Create();
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
base::PlatformThread::SetCurrentThreadType(
base::ThreadType::kDisplayCritical);
auto gpu_init = std::make_unique<gpu::GpuInit>();
ContentSandboxHelper sandbox_helper;
#if BUILDFLAG(IS_WIN)
sandbox_helper.set_sandbox_info(parameters.sandbox_info);
#endif
gpu_init->set_sandbox_helper(&sandbox_helper);
// Since GPU initialization calls into skia, it's important to initialize skia
// before it.
InitializeSkia();
// The ThreadPool must have been created before invoking |gpu_init| as it
// needs the ThreadPool (in angle::InitializePlatform()). Do not start it
// until after the sandbox is initialized however to avoid creating threads
// outside the sandbox.
DCHECK(base::ThreadPoolInstance::Get());
// Gpu initialization may fail for various reasons, in which case we will need
// to tear down this process. However, we can not do so safely until the IPC
// channel is set up, because the detection of early return of a child process
// is implemented using an IPC channel error. If the IPC channel is not fully
// set up between the browser and GPU process, and the GPU process crashes or
// exits early, the browser process will never detect it. For this reason we
// defer tearing down the GPU process until receiving the initialization
// message from the browser (through mojom::VizMain::CreateGpuService()).
const bool init_success = gpu_init->InitializeAndStartSandbox(
const_cast<base::CommandLine*>(&command_line), gpu_preferences);
#if BUILDFLAG(IS_CHROMEOS_ASH)
LOG(WARNING) << "gpu initialization completed init_success:" << init_success;
#endif
const bool dead_on_arrival = !init_success;
auto* client = GetContentClient()->gpu();
if (client) {
client->PostSandboxInitialized();
}
GetContentClient()->SetGpuInfo(gpu_init->gpu_info());
base::ThreadType io_thread_type = base::ThreadType::kDisplayCritical;
// ChildProcess will start the ThreadPoolInstance now that the sandbox is
// initialized.
ChildProcess gpu_process(io_thread_type);
DCHECK(base::ThreadPoolInstance::Get()->WasStarted());
if (client) {
client->PostIOThreadCreated(gpu_process.io_task_runner());
}
base::RunLoop run_loop;
GpuChildThread* child_thread =
new GpuChildThread(run_loop.QuitClosure(), std::move(gpu_init));
child_thread->Init(start_time);
gpu_process.set_main_thread(child_thread);
// Mojo IPC support is brought up by GpuChildThread, so startup tracing is
// enabled here if it needs to start after mojo init (normally so the mojo
// broker can bypass the sandbox to allocate startup tracing's SMB).
if (parameters.needs_startup_tracing_after_mojo_init) {
tracing::EnableStartupTracingIfNeeded();
}
#if BUILDFLAG(IS_MAC)
// A GPUEjectPolicy of 'wait' is set in the Info.plist of the browser
// process, meaning it is "responsible" for making sure it and its
// subordinate processes (i.e. the GPU process) drop references to the
// external GPU. Despite this, the system still sends the device removal
// notifications to the GPU process, so the GPU process handles its own
// graceful shutdown without help from the browser process.
//
// Using the "SafeEjectGPU" tool, we can see that when the browser process
// has a policy of 'wait', the GPU process gets the 'rwait' policy: "Eject
// actions apply to the responsible process, who in turn deals with
// subordinates to eliminate their ejecting eGPU references" [man 8
// SafeEjectGPU]. Empirically, the browser does not relaunch. Once the GPU
// process exits, it appears that the browser process is no longer considered
// to be using the GPU, so it "succeeds" the 'wait'.
metal::RegisterGracefulExitOnDeviceRemoval();
#endif
#if BUILDFLAG(IS_ANDROID)
base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
tracing::GraphicsMemoryDumpProvider::GetInstance(), "AndroidGraphics",
nullptr);
base::android::MeminfoDumpProvider::Initialize();
#endif
base::allocator::PartitionAllocSupport::Get()->ReconfigureAfterTaskRunnerInit(
switches::kGpuProcess);
base::HighResolutionTimerManager hi_res_timer_manager;
// Adds support of wall-time based TimerKeeper metrics for the main GPU thread
// when command-line flag is set. CrGpuMain will be used as suffix for each
// metric.
if (command_line.HasSwitch(switches::kEnableGpuMainTimeKeeperMetrics)) {
base::CurrentThread::Get()->EnableMessagePumpTimeKeeperMetrics(
"CrGpuMain",
/*wall_time_based_metrics_enabled_for_testing=*/true);
}
{
TRACE_EVENT0("gpu", "Run Message Loop");
run_loop.Run();
}
return dead_on_arrival ? RESULT_CODE_GPU_DEAD_ON_ARRIVAL : 0;
}
namespace {
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
bool StartSandboxLinux(gpu::GpuWatchdogThread* watchdog_thread,
const gpu::GPUInfo* gpu_info,
const gpu::GpuPreferences& gpu_prefs) {
TRACE_EVENT0("gpu,startup", "Initialize sandbox");
if (watchdog_thread) {
// SandboxLinux needs to be able to ensure that the thread
// has really been stopped.
sandbox::policy::SandboxLinux::GetInstance()->StopThread(watchdog_thread);
}
// SandboxLinux::InitializeSandbox() must always be called
// with only one thread.
sandbox::policy::SandboxLinux::Options sandbox_options;
if (gpu_info) {
// We have to enable sandbox settings for all GPUs in the system
// for Chrome to be able to access/use them.
sandbox_options.use_amd_specific_policies =
angle::IsAMD(gpu_info->active_gpu().vendor_id);
sandbox_options.use_intel_specific_policies =
angle::IsIntel(gpu_info->active_gpu().vendor_id);
sandbox_options.use_virtio_specific_policies =
angle::IsVirtIO(gpu_info->active_gpu().vendor_id);
sandbox_options.use_nvidia_specific_policies =
angle::IsNVIDIA(gpu_info->active_gpu().vendor_id);
for (const auto& gpu : gpu_info->secondary_gpus) {
if (angle::IsAMD(gpu.vendor_id))
sandbox_options.use_amd_specific_policies = true;
else if (angle::IsIntel(gpu.vendor_id))
sandbox_options.use_intel_specific_policies = true;
else if (angle::IsNVIDIA(gpu.vendor_id))
sandbox_options.use_nvidia_specific_policies = true;
}
}
sandbox_options.accelerated_video_decode_enabled =
!gpu_prefs.disable_accelerated_video_decode;
sandbox_options.accelerated_video_encode_enabled =
!gpu_prefs.disable_accelerated_video_encode;
#if BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_LINUX)
// Video decoding of many video streams can use thousands of FDs as well as
// Exo clients like Lacros.
// See https://crbug.com/1417237
const auto current_max_fds =
base::saturated_cast<unsigned int>(base::GetMaxFds());
constexpr unsigned int kMaxFDsDelta = 1u << 13;
const auto new_max_fds =
static_cast<unsigned int>(base::ClampMax(current_max_fds, kMaxFDsDelta));
base::IncreaseFdLimitTo(new_max_fds);
#endif
bool res = sandbox::policy::SandboxLinux::GetInstance()->InitializeSandbox(
sandbox::policy::SandboxTypeFromCommandLine(
*base::CommandLine::ForCurrentProcess()),
base::BindOnce(GpuPreSandboxHook), sandbox_options);
if (watchdog_thread) {
watchdog_thread->Start();
}
return res;
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#if BUILDFLAG(IS_WIN)
bool StartSandboxWindows(const sandbox::SandboxInterfaceInfo* sandbox_info) {
TRACE_EVENT0("gpu,startup", "Lower token");
// For Windows, if the target_services interface is not zero, the process
// is sandboxed and we must call LowerToken() before rendering untrusted
// content.
sandbox::TargetServices* target_services = sandbox_info->target_services;
if (target_services) {
target_services->LowerToken();
return true;
}
return false;
}
#endif // BUILDFLAG(IS_WIN)
} // namespace.
} // namespace content