149 lines
3.8 KiB
C++
149 lines
3.8 KiB
C++
// Copyright 2016 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that can
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// be found in the LICENSE file.
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#include "libcef/common/thread_impl.h"
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#include "libcef/common/task_runner_impl.h"
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#include "base/bind.h"
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#include "base/threading/thread_restrictions.h"
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namespace {
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void StopAndDestroy(base::Thread* thread) {
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// Calling PlatformThread::Join() on the UI thread is otherwise disallowed.
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base::ThreadRestrictions::ScopedAllowIO scoped_allow_io;
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// Deleting |thread| will implicitly stop and join it.
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delete thread;
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}
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} // namespace
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// static
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CefRefPtr<CefThread> CefThread::CreateThread(
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const CefString& display_name,
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cef_thread_priority_t priority,
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cef_message_loop_type_t message_loop_type,
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bool stoppable,
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cef_com_init_mode_t com_init_mode) {
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if (!base::MessageLoop::current()) {
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NOTREACHED() << "called on invalid thread";
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return nullptr;
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}
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CefRefPtr<CefThreadImpl> thread_impl = new CefThreadImpl();
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if (!thread_impl->Create(display_name, priority, message_loop_type, stoppable,
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com_init_mode)) {
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return nullptr;
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}
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return thread_impl;
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}
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CefThreadImpl::CefThreadImpl()
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: thread_id_(kInvalidPlatformThreadId) {
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}
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CefThreadImpl::~CefThreadImpl() {
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if (thread_.get()) {
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if (!owner_task_runner_->RunsTasksOnCurrentThread()) {
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// Delete |thread_| on the correct thread.
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owner_task_runner_->PostTask(FROM_HERE,
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base::Bind(StopAndDestroy, base::Unretained(thread_.release())));
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} else {
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StopAndDestroy(thread_.release());
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}
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}
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}
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bool CefThreadImpl::Create(const CefString& display_name,
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cef_thread_priority_t priority,
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cef_message_loop_type_t message_loop_type,
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bool stoppable,
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cef_com_init_mode_t com_init_mode) {
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owner_task_runner_ = CefTaskRunnerImpl::GetCurrentTaskRunner();
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DCHECK(owner_task_runner_);
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if (!owner_task_runner_)
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return false;
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thread_.reset(new base::Thread(display_name));
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base::Thread::Options options;
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switch (priority) {
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case TP_BACKGROUND:
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options.priority = base::ThreadPriority::BACKGROUND;
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break;
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case TP_DISPLAY:
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options.priority = base::ThreadPriority::DISPLAY;
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break;
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case TP_REALTIME_AUDIO:
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options.priority = base::ThreadPriority::REALTIME_AUDIO;
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break;
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default:
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break;
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}
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switch (message_loop_type) {
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case ML_TYPE_UI:
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options.message_loop_type = base::MessageLoop::TYPE_UI;
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break;
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case ML_TYPE_IO:
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options.message_loop_type = base::MessageLoop::TYPE_IO;
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break;
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default:
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break;
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}
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options.joinable = stoppable;
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#if defined(OS_WIN)
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if (com_init_mode != COM_INIT_MODE_NONE) {
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if (com_init_mode == COM_INIT_MODE_STA)
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options.message_loop_type = base::MessageLoop::TYPE_UI;
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thread_->init_com_with_mta(com_init_mode == COM_INIT_MODE_MTA);
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}
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#endif
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if (!thread_->StartWithOptions(options)) {
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thread_.reset();
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return false;
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}
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thread_task_runner_ = new CefTaskRunnerImpl(thread_->task_runner());
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thread_id_ = thread_->GetThreadId();
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return true;
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}
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CefRefPtr<CefTaskRunner> CefThreadImpl::GetTaskRunner() {
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return thread_task_runner_;
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}
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cef_platform_thread_id_t CefThreadImpl::GetPlatformThreadId() {
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return thread_id_;
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}
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void CefThreadImpl::Stop() {
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if (!owner_task_runner_)
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return;
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if (!owner_task_runner_->RunsTasksOnCurrentThread()) {
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NOTREACHED() << "called on invalid thread";
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return;
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}
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if (thread_)
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StopAndDestroy(thread_.release());
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}
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bool CefThreadImpl::IsRunning() {
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if (!owner_task_runner_)
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return false;
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if (!owner_task_runner_->RunsTasksOnCurrentThread()) {
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NOTREACHED() << "called on invalid thread";
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return false;
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}
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return thread_ && thread_->IsRunning();
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}
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