version 3.0

event/io_service.h

@@ -0,0 +1,73 @@
+//////////////////////////////////////////////////////////////////////////////// 
+//                                                                            //
+// File:           io_service.h                                               //
+// Description:    servicing of network IO requests for the event system      //
+// Project:        WANProxy XTech                                             //
+// Author:         Andreu Vidal Bramfeld-Software                             //
+// Last modified:  2015-04-01                                                 //
+//                                                                            //
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef	EVENT_IO_SERVICE_H
+#define	EVENT_IO_SERVICE_H
+
+#include <unistd.h>
+#include <map>
+#include <common/buffer.h>
+#include <common/ring_buffer.h>
+#include <common/thread/thread.h>
+#include <event/action.h>
+#include <event/event_callback.h>
+#include <event/event_message.h>
+
+#define IO_READ_BUFFER_SIZE	0x10000
+#define IO_POLL_EVENT_COUNT	512
+
+struct IoNode
+{
+	int fd;
+	bool reading;
+	bool writing;
+	EventAction* read_action;
+	EventAction* write_action;
+};
+
+class IoService : public Thread 
+{
+private:
+	LogHandle log_;
+	RingBuffer<EventMessage> gateway_;
+	uint8_t read_pool_[IO_READ_BUFFER_SIZE];
+	std::map<int, IoNode> fd_map_;
+	int handle_, rfd_, wfd_;
+	
+public:
+	IoService ();
+	virtual ~IoService ();
+
+	virtual void main ();
+	virtual void stop ();
+	
+private:
+	void handle_request (EventAction* act);
+	bool connect_channel (int fd, Event& ev);
+	bool read_channel (int fd, Event& ev, int flg);
+	bool write_channel (int fd, Event& ev);
+	bool close_channel (int fd, Event& ev);
+	void track (EventAction* act);
+	void cancel (EventAction* act);
+	void schedule (EventAction* act);
+	void terminate (EventAction* act);
+	
+	void open_resources ();
+	void close_resources ();
+	void set_fd (int fd, int rd, int wr, IoNode* node = 0);
+	void poll (int ms);
+
+public:
+	bool idle () const									{ return fd_map_.empty (); }
+	void wakeup ()											{ ::write (wfd_, "*", 1); }
+	void take_message (const EventMessage& msg)	{ gateway_.write (msg); wakeup (); }
+};
+
+#endif /* !EVENT_IO_SERVICE_H */