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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/browser/browser_main_runner.h"
#include "base/allocator/allocator_shim.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/debug/leak_annotations.h"
#include "base/debug/trace_event.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
#include "base/metrics/statistics_recorder.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/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "ui/base/ime/input_method_initializer.h"
#if defined(OS_WIN)
#include "base/win/metro.h"
#include "base/win/windows_version.h"
#include "ui/base/win/scoped_ole_initializer.h"
#endif
bool g_exited_main_message_loop = false;
namespace content {
class BrowserMainRunnerImpl : public BrowserMainRunner {
public:
BrowserMainRunnerImpl()
: initialization_started_(false), is_shutdown_(false) {}
virtual ~BrowserMainRunnerImpl() {
if (initialization_started_ && !is_shutdown_)
Shutdown();
}
virtual int Initialize(const MainFunctionParams& parameters) OVERRIDE {
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;
#if !defined(OS_IOS)
if (parameters.command_line.HasSwitch(switches::kWaitForDebugger))
base::debug::WaitForDebugger(60, true);
#endif
#if defined(OS_WIN)
if (parameters.command_line.HasSwitch(
switches::kEnableTextServicesFramework)) {
base::win::SetForceToUseTSF();
} else if (base::win::GetVersion() < base::win::VERSION_VISTA) {
// When "Extend support of advanced text services to all programs"
// (a.k.a. Cicero Unaware Application Support; CUAS) is enabled on
// Windows XP and handwriting modules shipped with Office 2003 are
// installed, "penjpn.dll" and "skchui.dll" will be loaded and then
// crash
// unless a user installs Office 2003 SP3. To prevent these modules from
// being loaded, disable TSF entirely. crbug/160914.
// TODO(yukawa): Add a high-level wrapper for this instead of calling
// Win32 API here directly.
ImmDisableTextFrameService(static_cast<DWORD>(-1));
}
#endif // OS_WIN
base::StatisticsRecorder::Initialize();
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);
#endif // OS_WIN
main_loop_.reset(new BrowserMainLoop(parameters));
main_loop_->Init();
main_loop_->EarlyInitialization();
// Must happen before we try to use a message loop or display any UI.
main_loop_->InitializeToolkit();
main_loop_->MainMessageLoopStart();
// 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.
#if defined(OS_WIN) && !defined(NO_TCMALLOC)
// When linking shared libraries, NO_TCMALLOC is defined, and dynamic
// allocator selection is not supported.
// Make this call before going multithreaded, or spawning any
// subprocesses.
base::allocator::SetupSubprocessAllocator();
#endif
ui::InitializeInputMethod();
}
main_loop_->CreateStartupTasks();
int result_code = main_loop_->GetResultCode();
if (result_code > 0)
return result_code;
// Return -1 to indicate no early termination.
return -1;
}
virtual int Run() OVERRIDE {
DCHECK(initialization_started_);
DCHECK(!is_shutdown_);
main_loop_->RunMainMessageLoopParts();
return main_loop_->GetResultCode();
}
virtual void Shutdown() OVERRIDE {
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
// 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 CommandLine& command_line = *CommandLine::ForCurrentProcess();
scoped_ptr<BrowserShutdownProfileDumper> profiler;
if (command_line.HasSwitch(switches::kTraceShutdown))
profiler.reset(new BrowserShutdownProfileDumper());
{
// The trace event has to stay between profiler creation and destruction.
TRACE_EVENT0("shutdown", "BrowserMainRunner");
g_exited_main_message_loop = true;
main_loop_->ShutdownThreadsAndCleanUp();
ui::ShutdownInputMethod();
#if defined(OS_WIN)
ole_initializer_.reset(NULL);
#endif
main_loop_.reset(NULL);
notification_service_.reset(NULL);
is_shutdown_ = true;
}
}
protected:
// True if we have started to initialize the runner.
bool initialization_started_;
// True if the runner has been shut down.
bool is_shutdown_;
scoped_ptr<NotificationServiceImpl> notification_service_;
scoped_ptr<BrowserMainLoop> main_loop_;
#if defined(OS_WIN)
scoped_ptr<ui::ScopedOleInitializer> ole_initializer_;
#endif
DISALLOW_COPY_AND_ASSIGN(BrowserMainRunnerImpl);
};
// static
BrowserMainRunner* BrowserMainRunner::Create() {
return new BrowserMainRunnerImpl();
}
} // namespace content
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