Major Refactoring v2.0

1 files changed, 125 insertions, 0 deletions

diff --git a/src/uscxml/interpreter/EventQueueImpl.h b/src/uscxml/interpreter/EventQueueImpl.h
new file mode 100644
index 0000000..10543c9
--- /dev/null
+++ b/src/uscxml/interpreter/EventQueueImpl.h
@@ -0,0 +1,125 @@
+/**
+ *  @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 EVENTSOURCE_H_775AB206
+#define EVENTSOURCE_H_775AB206
+
+#include "uscxml/Common.h"
+#include "uscxml/messages/Event.h"
+#include <string>
+#include <map>
+#include <list>
+#include <thread>
+#include <mutex>
+#include <condition_variable>
+
+#include <event2/event.h>
+
+
+namespace uscxml {
+
+class USCXML_API EventQueueImpl {
+public:
+	EventQueueImpl();
+	virtual ~EventQueueImpl();
+	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;
+
+};
+
+class USCXML_API DelayedEventQueueCallbacks {
+public:
+	virtual void eventReady(Event& event, const std::string& eventId) = 0;
+};
+
+class USCXML_API DelayedEventQueueImpl : public EventQueueImpl {
+public:
+	DelayedEventQueueImpl(DelayedEventQueueCallbacks* callbacks);
+	virtual ~DelayedEventQueueImpl();
+	virtual void enqueueDelayed(const Event& event, size_t delayMs, const std::string& eventUUID);
+	virtual void cancelDelayed(const std::string& eventId);
+	virtual void cancelAllDelayed();
+
+protected:
+	struct callbackData {
+		Event userData;
+		std::string eventUUID;
+		bool persist;
+		struct event *event;
+		DelayedEventQueueImpl* 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;
+};
+
+class USCXML_API EventQueue {
+public:
+	PIMPL_OPERATORS(EventQueue)
+
+	virtual Event dequeue(bool blocking) {
+		return _impl->dequeue(blocking);
+	}
+	virtual void enqueue(const Event& event) {
+		return _impl->enqueue(event);
+	}
+
+protected:
+	std::shared_ptr<EventQueueImpl> _impl;
+
+};
+
+class USCXML_API DelayedEventQueue : public EventQueue {
+public:
+	PIMPL_OPERATORS2(DelayedEventQueue, EventQueue)
+
+	void enqueueDelayed(const Event& event, size_t delayMs, const std::string& eventUUID) {
+		_impl->enqueueDelayed(event, delayMs, eventUUID);
+	}
+	void cancelDelayed(const std::string& eventUUID) {
+		return _impl->cancelDelayed(eventUUID);
+	}
+
+	void cancelAllDelayed() {
+		return _impl->cancelAllDelayed();
+	}
+
+protected:
+	std::shared_ptr<DelayedEventQueueImpl> _impl;
+};
+
+}
+
+#endif /* end of include guard: EVENTSOURCE_H_775AB206 */