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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#ifndef _Timer_
#define _Timer_
#include "qpid/sys/Monitor.h"
#include "qpid/sys/Thread.h"
#include "qpid/sys/Runnable.h"
#include "qpid/RefCounted.h"
#include <memory>
#include <queue>
#include <boost/intrusive_ptr.hpp>
namespace qpid {
namespace broker {
struct TimerTask : public RefCounted {
const qpid::sys::Duration duration;
qpid::sys::AbsTime time;
volatile bool cancelled;
TimerTask(qpid::sys::Duration timeout);
TimerTask(qpid::sys::AbsTime time);
virtual ~TimerTask();
void reset();
virtual void fire() = 0;
};
struct Later {
bool operator()(const boost::intrusive_ptr<TimerTask>& a,
const boost::intrusive_ptr<TimerTask>& b) const;
};
class Timer : private qpid::sys::Runnable {
protected:
qpid::sys::Monitor monitor;
std::priority_queue<boost::intrusive_ptr<TimerTask>,
std::vector<boost::intrusive_ptr<TimerTask> >,
Later> tasks;
qpid::sys::Thread runner;
bool active;
virtual void run();
public:
Timer();
virtual ~Timer();
void add(boost::intrusive_ptr<TimerTask> task);
void start();
void stop();
};
}}
#endif
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