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