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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/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/notification_service_impl.h"
#include "content/common/child_process.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#if defined(OS_WIN)
#include "base/win/scoped_com_initializer.h"
#endif
bool g_exited_main_message_loop = false;
namespace {
class BrowserMainRunnerImpl : public content::BrowserMainRunner {
public:
BrowserMainRunnerImpl()
: is_initialized_(false),
is_shutdown_(false),
created_threads_(false) {
}
~BrowserMainRunnerImpl() {
if (is_initialized_ && !is_shutdown_)
Shutdown();
}
virtual int Initialize(const content::MainFunctionParams& parameters)
OVERRIDE {
is_initialized_ = true;
// ChildProcess:: is a misnomer unless you consider context. Use
// of --wait-for-debugger only makes sense when Chrome itself is a
// child process (e.g. when launched by PyAuto).
if (parameters.command_line.HasSwitch(switches::kWaitForDebugger))
ChildProcess::WaitForDebugger("Browser");
if (parameters.command_line.HasSwitch(switches::kSingleProcess))
content::RenderProcessHost::set_run_renderer_in_process(true);
base::StatisticsRecorder::Initialize();
notification_service_.reset(new NotificationServiceImpl);
main_loop_.reset(new content::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)
#if !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
com_initializer_.reset(new base::win::ScopedCOMInitializer);
#endif // OS_WIN
main_loop_->CreateThreads();
int result_code = main_loop_->GetResultCode();
if (result_code > 0)
return result_code;
created_threads_ = true;
// Return -1 to indicate no early termination.
return -1;
}
virtual int Run() OVERRIDE {
DCHECK(is_initialized_);
DCHECK(!is_shutdown_);
main_loop_->RunMainMessageLoopParts();
return main_loop_->GetResultCode();
}
virtual void Shutdown() OVERRIDE {
DCHECK(is_initialized_);
DCHECK(!is_shutdown_);
g_exited_main_message_loop = true;
if (created_threads_)
main_loop_->ShutdownThreadsAndCleanUp();
#if defined(OS_WIN)
com_initializer_.reset(NULL);
#endif
main_loop_.reset(NULL);
notification_service_.reset(NULL);
is_shutdown_ = true;
}
protected:
// True if the runner has been initialized.
bool is_initialized_;
// True if the runner has been shut down.
bool is_shutdown_;
// True if the non-UI threads were created.
bool created_threads_;
scoped_ptr<NotificationServiceImpl> notification_service_;
scoped_ptr<content::BrowserMainLoop> main_loop_;
#if defined(OS_WIN)
scoped_ptr<base::win::ScopedCOMInitializer> com_initializer_;
#endif
DISALLOW_COPY_AND_ASSIGN(BrowserMainRunnerImpl);
};
} // namespace
namespace content {
// static
BrowserMainRunner* BrowserMainRunner::Create() {
return new BrowserMainRunnerImpl();
}
} // namespace content
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