| // 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/browser/browser_main_runner_impl.h" |
| |
| #include "base/base_switches.h" |
| #include "base/command_line.h" |
| #include "base/debug/debugger.h" |
| #include "base/debug/leak_annotations.h" |
| #include "base/lazy_instance.h" |
| #include "base/logging.h" |
| #include "base/message_loop/message_loop.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/run_loop.h" |
| #include "base/sampling_heap_profiler/sampling_heap_profiler.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/synchronization/atomic_flag.h" |
| #include "base/time/time.h" |
| #include "base/trace_event/heap_profiler_allocation_context_tracker.h" |
| #include "base/trace_event/trace_event.h" |
| #include "build/build_config.h" |
| #include "components/tracing/common/trace_startup_config.h" |
| #include "components/tracing/common/tracing_switches.h" |
| #include "content/browser/browser_main_loop.h" |
| #include "content/browser/browser_shutdown_profile_dumper.h" |
| #include "content/browser/notification_service_impl.h" |
| #include "content/common/content_switches_internal.h" |
| #include "content/public/common/content_switches.h" |
| #include "content/public/common/main_function_params.h" |
| #include "third_party/skia/include/core/SkGraphics.h" |
| #include "ui/base/ime/input_method_initializer.h" |
| |
| #if defined(OS_ANDROID) |
| #include "content/browser/android/tracing_controller_android.h" |
| #endif |
| |
| #if defined(OS_WIN) |
| #include "base/win/windows_version.h" |
| #include "ui/base/win/scoped_ole_initializer.h" |
| #include "ui/gfx/win/direct_write.h" |
| #endif |
| |
| namespace content { |
| namespace { |
| |
| base::LazyInstance<base::AtomicFlag>::Leaky g_exited_main_message_loop; |
| |
| } // namespace |
| |
| // static |
| BrowserMainRunnerImpl* BrowserMainRunnerImpl::Create() { |
| return new BrowserMainRunnerImpl(); |
| } |
| |
| BrowserMainRunnerImpl::BrowserMainRunnerImpl() |
| : initialization_started_(false), |
| is_shutdown_(false), |
| scoped_execution_fence_( |
| std::make_unique<base::TaskScheduler::ScopedExecutionFence>()) {} |
| |
| BrowserMainRunnerImpl::~BrowserMainRunnerImpl() { |
| if (initialization_started_ && !is_shutdown_) |
| Shutdown(); |
| } |
| |
| int BrowserMainRunnerImpl::Initialize(const MainFunctionParams& parameters) { |
| SCOPED_UMA_HISTOGRAM_LONG_TIMER( |
| "Startup.BrowserMainRunnerImplInitializeLongTime"); |
| TRACE_EVENT0("startup", "BrowserMainRunnerImpl::Initialize"); |
| |
| // On Android we normally initialize the browser in a series of UI thread |
| // tasks. While this is happening a second request can come from the OS or |
| // another application to start the browser. If this happens then we must |
| // not run these parts of initialization twice. |
| if (!initialization_started_) { |
| initialization_started_ = true; |
| |
| const base::TimeTicks start_time_step1 = base::TimeTicks::Now(); |
| |
| base::SamplingHeapProfiler::Init(); |
| if (parameters.command_line.HasSwitch(switches::kSamplingHeapProfiler)) { |
| base::SamplingHeapProfiler* profiler = base::SamplingHeapProfiler::Get(); |
| unsigned sampling_interval = 0; |
| bool parsed = |
| base::StringToUint(parameters.command_line.GetSwitchValueASCII( |
| switches::kSamplingHeapProfiler), |
| &sampling_interval); |
| if (parsed && sampling_interval > 0) |
| profiler->SetSamplingInterval(sampling_interval * 1024); |
| profiler->Start(); |
| } |
| |
| SkGraphics::Init(); |
| |
| if (parameters.command_line.HasSwitch(switches::kWaitForDebugger)) |
| base::debug::WaitForDebugger(60, true); |
| |
| if (parameters.command_line.HasSwitch(switches::kBrowserStartupDialog)) |
| WaitForDebugger("Browser"); |
| |
| notification_service_.reset(new NotificationServiceImpl); |
| |
| #if defined(OS_WIN) |
| // Ole must be initialized before starting message pump, so that TSF |
| // (Text Services Framework) module can interact with the message pump |
| // on Windows 8 Metro mode. |
| ole_initializer_.reset(new ui::ScopedOleInitializer); |
| // Enable DirectWrite font rendering if needed. |
| gfx::win::MaybeInitializeDirectWrite(); |
| #endif // OS_WIN |
| |
| main_loop_.reset( |
| new BrowserMainLoop(parameters, std::move(scoped_execution_fence_))); |
| |
| main_loop_->Init(); |
| |
| if (parameters.created_main_parts_closure) { |
| parameters.created_main_parts_closure->Run(main_loop_->parts()); |
| delete parameters.created_main_parts_closure; |
| } |
| |
| const int early_init_error_code = main_loop_->EarlyInitialization(); |
| if (early_init_error_code > 0) |
| return early_init_error_code; |
| |
| // Must happen before we try to use a message loop or display any UI. |
| if (!main_loop_->InitializeToolkit()) |
| return 1; |
| |
| main_loop_->PreMainMessageLoopStart(); |
| main_loop_->MainMessageLoopStart(); |
| main_loop_->PostMainMessageLoopStart(); |
| |
| // WARNING: If we get a WM_ENDSESSION, objects created on the stack here |
| // are NOT deleted. If you need something to run during WM_ENDSESSION add it |
| // to browser_shutdown::Shutdown or BrowserProcess::EndSession. |
| |
| ui::InitializeInputMethod(); |
| UMA_HISTOGRAM_TIMES("Startup.BrowserMainRunnerImplInitializeStep1Time", |
| base::TimeTicks::Now() - start_time_step1); |
| } |
| const base::TimeTicks start_time_step2 = base::TimeTicks::Now(); |
| main_loop_->CreateStartupTasks(); |
| int result_code = main_loop_->GetResultCode(); |
| if (result_code > 0) |
| return result_code; |
| |
| UMA_HISTOGRAM_TIMES("Startup.BrowserMainRunnerImplInitializeStep2Time", |
| base::TimeTicks::Now() - start_time_step2); |
| |
| // Return -1 to indicate no early termination. |
| return -1; |
| } |
| |
| #if defined(OS_ANDROID) |
| void BrowserMainRunnerImpl::SynchronouslyFlushStartupTasks() { |
| main_loop_->SynchronouslyFlushStartupTasks(); |
| } |
| #endif |
| |
| int BrowserMainRunnerImpl::Run() { |
| DCHECK(initialization_started_); |
| DCHECK(!is_shutdown_); |
| main_loop_->RunMainMessageLoopParts(); |
| return main_loop_->GetResultCode(); |
| } |
| |
| void BrowserMainRunnerImpl::Shutdown() { |
| DCHECK(initialization_started_); |
| DCHECK(!is_shutdown_); |
| |
| #ifdef LEAK_SANITIZER |
| // Invoke leak detection now, to avoid dealing with shutdown-only leaks. |
| // Normally this will have already happened in |
| // BroserProcessImpl::ReleaseModule(), so this call has no effect. This is |
| // only for processes which do not instantiate a BrowserProcess. |
| // If leaks are found, the process will exit here. |
| __lsan_do_leak_check(); |
| #endif |
| |
| main_loop_->PreShutdown(); |
| |
| // If startup tracing has not been finished yet, replace it's dumper |
| // with special version, which would save trace file on exit (i.e. |
| // startup tracing becomes a version of shutdown tracing). |
| // There are two cases: |
| // 1. Startup duration is not reached. |
| // 2. Or if the trace should be saved to file for --trace-config-file flag. |
| std::unique_ptr<BrowserShutdownProfileDumper> startup_profiler; |
| if (tracing::TraceStartupConfig::GetInstance() |
| ->IsTracingStartupForDuration()) { |
| main_loop_->StopStartupTracingTimer(); |
| if (main_loop_->startup_trace_file() != |
| base::FilePath().AppendASCII("none")) { |
| startup_profiler.reset( |
| new BrowserShutdownProfileDumper(main_loop_->startup_trace_file())); |
| } |
| } else if (tracing::TraceStartupConfig::GetInstance() |
| ->ShouldTraceToResultFile()) { |
| base::FilePath result_file = main_loop_->GetStartupTraceFileName(); |
| startup_profiler.reset(new BrowserShutdownProfileDumper(result_file)); |
| } |
| |
| // The shutdown tracing got enabled in AttemptUserExit earlier, but someone |
| // needs to write the result to disc. For that a dumper needs to get created |
| // which will dump the traces to disc when it gets destroyed. |
| const base::CommandLine& command_line = |
| *base::CommandLine::ForCurrentProcess(); |
| std::unique_ptr<BrowserShutdownProfileDumper> shutdown_profiler; |
| if (command_line.HasSwitch(switches::kTraceShutdown)) { |
| shutdown_profiler.reset(new BrowserShutdownProfileDumper( |
| BrowserShutdownProfileDumper::GetShutdownProfileFileName())); |
| } |
| |
| { |
| // The trace event has to stay between profiler creation and destruction. |
| TRACE_EVENT0("shutdown", "BrowserMainRunner"); |
| g_exited_main_message_loop.Get().Set(); |
| |
| main_loop_->ShutdownThreadsAndCleanUp(); |
| |
| ui::ShutdownInputMethod(); |
| #if defined(OS_WIN) |
| ole_initializer_.reset(NULL); |
| #endif |
| #if defined(OS_ANDROID) |
| // Forcefully terminates the RunLoop inside MessagePumpForUI, ensuring |
| // proper shutdown for content_browsertests. Shutdown() is not used by |
| // the actual browser. |
| if (base::RunLoop::IsRunningOnCurrentThread()) |
| base::RunLoop::QuitCurrentDeprecated(); |
| #endif |
| main_loop_.reset(nullptr); |
| |
| notification_service_.reset(nullptr); |
| |
| is_shutdown_ = true; |
| } |
| } |
| |
| // static |
| BrowserMainRunner* BrowserMainRunner::Create() { |
| return BrowserMainRunnerImpl::Create(); |
| } |
| |
| // static |
| bool BrowserMainRunner::ExitedMainMessageLoop() { |
| return g_exited_main_message_loop.IsCreated() && |
| g_exited_main_message_loop.Get().IsSet(); |
| } |
| |
| } // namespace content |