Subversion Repositories shark

/* 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