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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 BASICEVENTQUEUE_H_39DCC18B
+#define BASICEVENTQUEUE_H_39DCC18B
+
+
+#include "EventQueueImpl.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 BasicEventQueue : public EventQueueImpl {
+public:
+ BasicEventQueue();
+ virtual ~BasicEventQueue();
+ virtual Event dequeue(bool blocking);
+ virtual void enqueue(const Event& event);
+
+protected:
+ std::list<Event> _queue;
+ std::recursive_mutex _mutex;
+ std::condition_variable_any _cond;
+};
+
+/**
+ * @ingroup eventqueue
+ * @ingroup impl
+ */
+class USCXML_API BasicDelayedEventQueue : public BasicEventQueue, public DelayedEventQueueImpl {
+public:
+ BasicDelayedEventQueue(DelayedEventQueueCallbacks* callbacks);
+ virtual ~BasicDelayedEventQueue();
+ 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(bool blocking) {
+ return BasicEventQueue::dequeue(blocking);
+ }
+ virtual void enqueue(const Event& event) {
+ return BasicEventQueue::enqueue(event);
+ }
+
+protected:
+ struct callbackData {
+ Event userData;
+ std::string eventUUID;
+ bool persist;
+ struct event *event;
+ BasicDelayedEventQueue* eventQueue;
+ };
+
+ 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: BASICEVENTQUEUE_H_39DCC18B */