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/* $Id: event.h 840 2007-09-09 12:17:42Z michael $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/event.h $
*
* generic timer handling
*
* Copyright (C) 2009 Ed Martin <edman007@edman007.com>
* Copyright (C) 2009 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux 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, or (at your option)
* any later version.
*
* LCD4Linux 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _EVENT_H_
#define _EVENT_H_
#include <time.h>
//events are identified by their file descriptor only
/*
* these functions allow plugins to add event hooks
* (and thus break out of the main loop when sleeping)
* these callbacks than then trigger named events to propagate
* the event to the screen
*/
typedef enum {
EVENT_READ = 1,
EVENT_WRITE = 2,
EVENT_HUP = 4,
EVENT_ERR = 8
} event_flags_t;
int event_add(void (*callback) (event_flags_t flags, void *data), void *data, const int fd, const int read,
const int write, const int active);
int event_del(const int fd);
int event_modify(const int fd, const int read, const int write, const int active);
int event_process(const struct timespec *timeout);
void event_exit(void);
/*
* These fuctions keep a list of the events to trigger on allowing multiple
* things to trigger an event and multiple things to receive the event
*/
//add an event to be triggered
int named_event_add(char *event, void (*callback) (void *data), void *data);
//remove an event from the list of events
int named_event_del(char *event, void (*callback) (void *data), void *data);
int named_event_trigger(char *event); //call all calbacks for this event
#endif
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