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/**
* @file
* @author 2016 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#ifndef BASICDELAYEDEVENTQUEUE_H_49D837C4
#define BASICDELAYEDEVENTQUEUE_H_49D837C4
#include "BasicEventQueue.h"
#include <string>
#include <map>
#include <list>
#include <thread>
#include <mutex>
#include <condition_variable>
#include <event2/event.h>
namespace uscxml {
/**
* @ingroup eventqueue
* @ingroup impl
*/
class USCXML_API BasicDelayedEventQueue : public BasicEventQueue, public DelayedEventQueueImpl {
public:
BasicDelayedEventQueue(DelayedEventQueueCallbacks* callbacks);
virtual ~BasicDelayedEventQueue();
virtual std::shared_ptr<DelayedEventQueueImpl> create(DelayedEventQueueCallbacks* callbacks);
virtual void enqueueDelayed(const Event& event, size_t delayMs, const std::string& eventUUID);
virtual void cancelDelayed(const std::string& eventId);
virtual void cancelAllDelayed();
virtual Event dequeue(size_t blockMs) {
return BasicEventQueue::dequeue(blockMs);
}
virtual void enqueue(const Event& event) {
return BasicEventQueue::enqueue(event);
}
virtual void reset();
virtual Data serialize();
virtual void deserialize(const Data& data);
protected:
virtual std::shared_ptr<EventQueueImpl> create() {
ErrorEvent e("Cannot create a DelayedEventQueue without callbacks");
throw e;
}
struct callbackData {
Event userData;
std::string eventUUID;
bool persist;
struct event *event;
BasicDelayedEventQueue* eventQueue;
timeval added;
timeval due;
};
bool _isStarted;
std::thread* _thread;
std::map<std::string, callbackData> _callbackData;
struct event_base* _eventLoop;
struct event* _dummyEvent;
static void run(void* instance);
void start();
void stop();
static void timerCallback(evutil_socket_t fd, short what, void *arg);
DelayedEventQueueCallbacks* _callbacks;
};
}
#endif /* end of include guard: BASICDELAYEDEVENTQUEUE_H_49D837C4 */
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