event.h

#ifndef EVENT_H
#define	EVENT_H

/* event.h -*-mode: C; c-file-style:"cc-mode";-*- */
/*----------------------------------------------------------------------------
  File:   event.h
  Description: RUDP event management: Input event handling, registering file descriptors, 
  timers and event loop.
  Authors: Olof Hagsand and Peter Sjödin
 
  RUDP event management is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This software 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.  See the
  GNU General Public License for more details.

  *--------------------------------------------------------------------------*/
/*
 * Register functions to be called either when input on a file descriptor,
 * or as a a result of a timeout.
 * The callback function has the following signature:
 *   int fn(int fd, void* arg)
 * fd is the file descriptor where the input was received (for timeouts, this
 *    contains no information).
 * arg is an argument given when the callback was registered.
 * If the return value of the callback is < 0, it is treated as an unrecoverable
 * error, and the program is terminated.
 */


/*
 * Prototypes
 */
int event_timeout(struct timeval timer,  
		       int (*callback)(int, void*), void *callback_arg, char *idstr);

int
event_periodic(int secs,  
		    int (*callback)(int, void*), 
		    void *callback_arg, 
		    char *idstr);

int event_timeout_delete(int (*callback)(int, void*), void *callback_arg);
int event_fd_delete(int (*callback)(int, void*), void *callback_arg);
int event_fd(int fd, int (*callback)(int, void*), void *callback_arg, char *idstr);
int eventloop();

#endif /* EVENT_H */