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/* Linux ISDN subsystem, finite state machine
*
* Author Karsten Keil
* Copyright by Karsten Keil <keil@isdn4linux.de>
* 2001-2002 by Kai Germaschewski <kai@germaschewski.name>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*/
#ifndef __ISDN_FSM_H__
#define __ISDN_FSM_H__
#include <linux/kernel.h>
#include <linux/timer.h>
struct fsm_inst;
typedef int (*fsm_fn)(struct fsm_inst *, int, void *);
struct fsm {
fsm_fn *jumpmatrix;
int st_cnt, ev_cnt, fn_cnt;
char **st_str, **ev_str;
struct fsm_node *fn_tbl;
};
struct fsm_inst {
struct fsm *fsm;
int state;
int debug;
void *userdata;
int userint;
void (*printdebug) (struct fsm_inst *, char *, ...);
};
struct fsm_node {
int st, ev;
fsm_fn fn;
};
struct fsm_timer {
struct fsm_inst *fi;
struct timer_list tl;
int ev;
void *arg;
};
int fsm_new(struct fsm *fsm);
void fsm_free(struct fsm *fsm);
int fsm_event(struct fsm_inst *fi, int event, void *arg);
void fsm_change_state(struct fsm_inst *fi, int newstate);
void fsm_init_timer(struct fsm_inst *fi, struct fsm_timer *ft);
int fsm_add_timer(struct fsm_timer *ft, int timeout, int event);
void fsm_mod_timer(struct fsm_timer *ft, int timeout, int event);
void fsm_del_timer(struct fsm_timer *ft);
#endif
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