cef/libcef/cef_process.cc

161 lines
4.3 KiB
C++

// Copyright (c) 2010 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2010 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 "cef_process.h"
#include "cef_process_io_thread.h"
#include "cef_process_sub_thread.h"
#include "cef_process_ui_thread.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
// Class used to process events on the current message loop.
class CefMessageLoopForUI : public MessageLoopForUI
{
typedef MessageLoopForUI inherited;
public:
CefMessageLoopForUI()
: is_iterating_(true)
{
}
#if defined(OS_MACOSX)
virtual ~CefMessageLoopForUI()
{
// On Mac the MessageLoop::AutoRunState scope in Run() never exits so clear
// the state_ variable to avoid an assertion in the MessageLoop destructor.
state_ = NULL;
}
#endif
// Returns the MessageLoopForUI of the current thread.
static CefMessageLoopForUI* current() {
MessageLoop* loop = MessageLoop::current();
DCHECK_EQ(MessageLoop::TYPE_UI, loop->type());
return static_cast<CefMessageLoopForUI*>(loop);
}
virtual bool DoIdleWork() {
bool valueToRet = inherited::DoIdleWork();
if (is_iterating_)
pump_->Quit();
return valueToRet;
}
// Do a single interation of the UI message loop.
void DoMessageLoopIteration() {
#if defined(OS_MACOSX)
Run();
#else
RunWithDispatcher(NULL);
#endif
}
// Run the UI message loop.
void RunMessageLoop() {
is_iterating_ = false;
DoMessageLoopIteration();
}
bool is_iterating() { return is_iterating_; }
private:
// True if the message loop is doing one iteration at a time.
bool is_iterating_;
DISALLOW_COPY_AND_ASSIGN(CefMessageLoopForUI);
};
CefProcess::CefProcess(bool multi_threaded_message_loop)
: multi_threaded_message_loop_(multi_threaded_message_loop),
created_ui_thread_(false),
created_io_thread_(false),
created_file_thread_(false) {
}
CefProcess::~CefProcess() {
// Terminate the IO thread.
io_thread_.reset();
// Terminate the FILE thread.
file_thread_.reset();
if(!multi_threaded_message_loop_) {
// Must explicitly clean up the UI thread.
ui_thread_->CleanUp();
// Terminate the UI thread.
ui_thread_.reset();
// Terminate the message loop.
ui_message_loop_.reset();
}
}
void CefProcess::DoMessageLoopIteration() {
DCHECK(CalledOnValidThread() && ui_message_loop_.get() != NULL);
DCHECK(ui_message_loop_->is_iterating());
ui_message_loop_->DoMessageLoopIteration();
}
void CefProcess::RunMessageLoop() {
DCHECK(CalledOnValidThread() && ui_message_loop_.get() != NULL);
ui_message_loop_->RunMessageLoop();
}
void CefProcess::QuitMessageLoop() {
DCHECK(CalledOnValidThread() && ui_message_loop_.get() != NULL);
ui_message_loop_->Quit();
}
void CefProcess::CreateUIThread() {
DCHECK(!created_ui_thread_ && ui_thread_.get() == NULL);
created_ui_thread_ = true;
scoped_ptr<CefProcessUIThread> thread;
if(multi_threaded_message_loop_) {
// Create the message loop on a new thread.
thread.reset(new CefProcessUIThread());
base::Thread::Options options;
options.message_loop_type = MessageLoop::TYPE_UI;
if (!thread->StartWithOptions(options))
return;
} else {
// Create the message loop on the current (main application) thread.
ui_message_loop_.reset(new CefMessageLoopForUI());
thread.reset(
new CefProcessUIThread(ui_message_loop_.get()));
// Must explicitly initialize the UI thread.
thread->Init();
}
ui_thread_.swap(thread);
}
void CefProcess::CreateIOThread() {
DCHECK(!created_io_thread_ && io_thread_.get() == NULL);
created_io_thread_ = true;
scoped_ptr<CefProcessIOThread> thread(new CefProcessIOThread());
base::Thread::Options options;
options.message_loop_type = MessageLoop::TYPE_IO;
if (!thread->StartWithOptions(options))
return;
io_thread_.swap(thread);
}
void CefProcess::CreateFileThread() {
DCHECK(!created_file_thread_ && file_thread_.get() == NULL);
created_file_thread_ = true;
scoped_ptr<base::Thread> thread(new CefProcessSubThread(CefThread::FILE));
base::Thread::Options options;
options.message_loop_type = MessageLoop::TYPE_IO;
if (!thread->StartWithOptions(options))
return;
file_thread_.swap(thread);
}