bool Thread::StartWithOptions(const Options& options)
{
DCHECK(!message_loop_);
SetThreadWasQuitProperly(false);
StartupData startup_data(options);
startup_data_ = &startup_data;
if(!Create(options.stack_size, this, &thread_))
{
DLOG(ERROR) << "failed to create thread";
startup_data_ = NULL;
return false;
}
// 等待线程启动并初始化message_loop_.
startup_data.event.Wait();
// 设置成NULL, 所以我们不会保存一个栈上对象的指针.
startup_data_ = NULL;
started_ = true;
DCHECK(message_loop_);
return true;
}
void FrameworkThread::Run()
{
#ifndef NDEBUG
#if defined(OS_WIN) && defined(COMPILER_MSVC)
SetThreadName(GetCurrentThreadId(), name_.c_str());
#endif
#endif
InitTlsData(this);
SetThreadWasQuitProperly(false);
{
ThreadId thread_id = Thread::CurrentId();
set_thread_id(thread_id);
// The message loop for this thread.
MessageLoop *message_loop;
if (loop_type_ == MessageLoop::kCustomMessageLoop)
message_loop = factory_->CreateMessageLoop();
else {
if (loop_type_ == MessageLoop::kIOMessageLoop)
message_loop = new IOMessageLoop;
#if defined(OS_WIN)
else if (loop_type_ == MessageLoop::kUIMessageLoop)
message_loop = new UIMessageLoop;
#endif
else
message_loop = new MessageLoop;
}
message_loop_ = message_loop;
// Let the thread do extra initialization.
// Let's do this before signaling we are started.
Init();
event_.Signal();
#if defined(OS_WIN)
message_loop_->RunWithDispatcher(dispatcher_);
#else
message_loop_->Run();
#endif // OS_WIN
// Let the thread do extra cleanup.
Cleanup();
//DCHECK(GetThreadWasQuitProperly());
// We can't receive messages anymore.
if (loop_type_ != MessageLoop::kCustomMessageLoop)
delete message_loop_;
else
{
delete message_loop_;
factory_.reset();
}
message_loop_ = NULL;
}
set_thread_id(kInvalidThreadId);
{
FrameworkThreadTlsData *tls = GetTlsData();
if (tls != NULL)
{ }
//DCHECK(tls->managed == 0); // you must call ThreadManager::UnregisterThread before come there
}
FreeTlsData();
}
void FrameworkThread::DoStopSoon()
{
MessageLoop::current()->Quit();
SetThreadWasQuitProperly(true);
}