160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
/* $Id: fsm.c,v 2.0 2004/06/29 14:35:31 kkeil Exp $
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*
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*
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* Author Karsten Keil <kkeil@novell.com>
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*
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* Copyright 2007 by Karsten Keil <kkeil@novell.com>
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*
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* This code is free software; you can redistribute it and/or modify
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* it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE
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* version 2.1 as published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU LESSER GENERAL PUBLIC LICENSE for more details.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "fsm.h"
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#include "debug.h"
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#define FSM_TIMER_DEBUG 0
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void
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FsmNew(struct Fsm *fsm,
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struct FsmNode *fnlist, int fncount)
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{
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int i;
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fsm->jumpmatrix = (FSMFNPTR *)
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malloc(sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count);
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if (!fsm->jumpmatrix)
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return;
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memset(fsm->jumpmatrix, 0, sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count);
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for (i = 0; i < fncount; i++)
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if ((fnlist[i].state>=fsm->state_count) || (fnlist[i].event>=fsm->event_count)) {
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eprint("FsmNew Error line %d st(%ld/%ld) ev(%ld/%ld)\n",
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i,(long)fnlist[i].state,(long)fsm->state_count,
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(long)fnlist[i].event,(long)fsm->event_count);
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} else
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fsm->jumpmatrix[fsm->state_count * fnlist[i].event +
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fnlist[i].state] = (FSMFNPTR) fnlist[i].routine;
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}
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void
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FsmFree(struct Fsm *fsm)
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{
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free(fsm->jumpmatrix);
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}
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int
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FsmEvent(struct FsmInst *fi, int event, void *arg)
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{
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FSMFNPTR r;
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if ((fi->state>=fi->fsm->state_count) || (event >= fi->fsm->event_count)) {
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eprint("FsmEvent Error st(%ld/%ld) ev(%d/%ld)\n",
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(long)fi->state,(long)fi->fsm->state_count,event,(long)fi->fsm->event_count);
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return(1);
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}
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r = fi->fsm->jumpmatrix[fi->fsm->state_count * event + fi->state];
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if (r) {
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if (fi->debug)
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fi->printdebug(fi, "State %s Event %s",
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fi->fsm->strState[fi->state],
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fi->fsm->strEvent[event]);
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r(fi, event, arg);
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return (0);
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} else {
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if (fi->debug)
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fi->printdebug(fi, "State %s Event %s no action",
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fi->fsm->strState[fi->state],
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fi->fsm->strEvent[event]);
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return (!0);
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}
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}
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void
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FsmChangeState(struct FsmInst *fi, int newstate)
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{
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if (fi->debug)
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fi->printdebug(fi, "ChangeState %s -> %s",
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fi->fsm->strState[fi->state], fi->fsm->strState[newstate]);
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fi->state = newstate;
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}
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static void
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FsmExpireTimer(void *arg)
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{
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struct FsmTimer *ft = arg;
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#if FSM_TIMER_DEBUG
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if (ft->fi->debug)
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ft->fi->printdebug(ft->fi, "FsmExpireTimer %lx", (long) ft);
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#endif
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FsmEvent(ft->fi, ft->event, ft->arg);
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}
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void
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FsmInitTimer(struct FsmInst *fi, struct FsmTimer *ft)
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{
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ft->fi = fi;
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#if FSM_TIMER_DEBUG
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if (ft->fi->debug)
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ft->fi->printdebug(ft->fi, "FsmInitTimer %lx", (long) ft);
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#endif
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init_timer(&ft->tl, ft->fi->tb, ft, FsmExpireTimer);
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}
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void
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FsmDelTimer(struct FsmTimer *ft, int where)
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{
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#if FSM_TIMER_DEBUG
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if (ft->fi->debug)
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ft->fi->printdebug(ft->fi, "FsmDelTimer %lx %d", (long) ft, where);
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#endif
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del_timer(&ft->tl);
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}
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int
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FsmAddTimer(struct FsmTimer *ft,
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int millisec, int event, void *arg, int where)
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{
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#if FSM_TIMER_DEBUG
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if (ft->fi->debug)
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ft->fi->printdebug(ft->fi, "FsmAddTimer %lx %d %d",
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(long) ft, millisec, where);
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#endif
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if (timer_pending(&ft->tl)) {
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eprint("FsmAddTimer: timer already active!\n");
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ft->fi->printdebug(ft->fi, "FsmAddTimer already active!");
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return -1;
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}
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ft->event = event;
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ft->arg = arg;
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add_timer(&ft->tl, millisec);
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return 0;
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}
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void
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FsmRestartTimer(struct FsmTimer *ft,
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int millisec, int event, void *arg, int where)
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{
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#if FSM_TIMER_DEBUG
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if (ft->fi->debug)
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ft->fi->printdebug(ft->fi, "FsmRestartTimer %lx %d %d",
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(long) ft, millisec, where);
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#endif
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if (timer_pending(&ft->tl))
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del_timer(&ft->tl);
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ft->event = event;
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ft->arg = arg;
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add_timer(&ft->tl, millisec);
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}
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