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Copy pathEventLoopThread.cc
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73 lines (59 loc) · 1.41 KB
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// Copyright 2010, Shuo Chen. All rights reserved.
// http://code.google.com/p/muduo/
//
// Use of this source code is governed by a BSD-style license
// that can be found in the License file.
// Author: Shuo Chen (chenshuo at chenshuo dot com)
#include <muduo/net/EventLoopThread.h>
#include <muduo/net/EventLoop.h>
using namespace muduo;
using namespace muduo::net;
EventLoopThread::EventLoopThread(const ThreadInitCallback& cb)
: loop_(NULL),
exiting_(false),
thread_(std::bind(&EventLoopThread::threadFunc, this), "EventLoopThread"), // FIXME: number it
mutex_(),
cond_(mutex_),
callback_(cb)
{
}
EventLoopThread::~EventLoopThread()
{
exiting_ = true;
if (loop_ != NULL) // not 100% race-free, eg. threadFunc could be running callback_.
{
// still a tiny chance to call destructed object, if threadFunc exits just now.
// but when EventLoopThread destructs, usually programming is exiting anyway.
loop_->quit();
thread_.join();
}
}
EventLoop* EventLoopThread::startLoop()
{
assert(!thread_.started());
thread_.start();
{
MutexLockGuard lock(mutex_);
while (loop_ == NULL)
{
cond_.wait();
}
}
return loop_;
}
void EventLoopThread::threadFunc()
{
EventLoop loop;
if (callback_)
{
callback_(&loop);
}
{
MutexLockGuard lock(mutex_);
loop_ = &loop;
cond_.notify();
}
loop.loop();
//assert(exiting_);
loop_ = NULL;
}