version 3.0

event/event_system.h

@@ -0,0 +1,92 @@
+////////////////////////////////////////////////////////////////////////////////
+//                                                                            //
+// File:           event_system.h                                             //
+// Description:    global event handling core class definition                //
+// Project:        WANProxy XTech                                             //
+// Author:         Andreu Vidal Bramfeld-Software                             //
+// Last modified:  2015-04-01                                                 //
+//                                                                            //
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef	EVENT_EVENT_SYSTEM_H
+#define	EVENT_EVENT_SYSTEM_H
+
+#include <common/buffer.h>
+#include <common/ring_buffer.h>
+#include <event/action.h>
+#include <event/event_callback.h>
+#include <event/object_callback.h>
+#include <event/callback_queue.h>
+#include <event/event_message.h>
+#include <event/io_service.h>
+
+class EventAction;
+
+enum EventInterest 
+{
+	EventInterestReload,
+	EventInterestStop,
+	EventInterests
+};
+
+enum StreamMode 
+{
+	StreamModeConnect,
+	StreamModeAccept,
+	StreamModeRead,
+	StreamModeWrite,
+	StreamModeEnd
+};
+
+class EventSystem 
+{
+private:
+	LogHandle log_;
+	IoService io_service_;
+	WaitBuffer<EventMessage> gateway_;
+	CallbackQueue interest_queue_[EventInterests];
+	bool reload_, stop_;
+	
+public:
+	EventSystem ();
+
+	void run ();
+	void reload ();
+	void stop ();
+	
+	Action* register_interest (EventInterest interest, Callback* cb);
+	Action* track (int fd, StreamMode mode, EventCallback* cb);
+	void cancel (EventAction* act);
+	
+	int take_message (const EventMessage& msg)   { return gateway_.write (msg); }
+};
+
+class EventAction : public Action 
+{
+public:
+	EventSystem& system_;
+	int fd_;
+	StreamMode mode_;
+	EventCallback* callback_;
+	
+public:
+	EventAction (EventSystem& sys, int fd, StreamMode mode, EventCallback* cb) : system_ (sys)
+	{
+		fd_ = fd; mode_ = mode; callback_ = cb;
+	}
+	
+	~EventAction ()
+	{
+		delete callback_;
+	}
+	
+	virtual void cancel ()
+	{
+		cancelled_ = true;
+		system_.cancel (this);
+	}
+};
+
+extern EventSystem event_system;
+
+#endif /* !EVENT_EVENT_SYSTEM_H */