#: 20931 S12/OS9/68000 (OSK)
    26-Apr-95  13:40:00
Sb: #20927-Alarms 'disappearing'
Fm: Ian J Shearer 100410,2733
To: Kevin Darling 76703,4227 (X)

Kev

The code is so trivial there's not a lot to say about it; it's shown below.  As
I said initially, it DOES work for many iterations before a failure occurs.

Two functions are shown.  The first sets the timer going, the second is the
signal handler.  The function setTimer() is just a wrapper for the OS-9
function call.  The handler does the usual of setting a global variable and
masking out further signals until this one is dealt with.  (The printf
statement was included when I first saw the problem.)  If you can see anything
wrong with this I'd love to know; it appears to be so simple it's hard to see
where it can fail.

Ian.


/*****************************************************************************/
int setTimer(int i_Event, int i_Time)
/*****************************************************************************
 * Sets an OS-9 alarm going to generate a signal after the specified time.
 *
 *      Inputs: i_Event          signal/event to be generated
 *              i_Time          time interval (in 1/10 of a sec.) before
 *                              signal generated
 *
 *      Returns:        -1              if an error occurs
 *              0               else
 *****************************************************************************/
{
        register int    i = 0;
        int             i_err,
                        i_rval,
                        i_AlarmID;
        /*
         *      Set an OS-9 alarm for the desired signal/time
         */
        if ((i_err = _os_alarm_set(&i_AlarmID, i_Event, ALM_TIME(i_Time))) !=
0)
        {
                err_report(i_err,__LINE__,__FILE__);
                i_rval = -1;
        }

        return i_rval;
}

/*****************************************************************************/
void handler(int i_signo)
/*****************************************************************************
 *OS-9 signal handler.  If the received signal is SIGQUIT, set flag to
 *abort process.
 *
 *      Inputs: i_signo         OS-9 signal received
 *
 *      Returns:        ---
 *
 *****************************************************************************/
{
        switch (i_signo)
        {
                case SIGQUIT:
                        i_ProzessEndeFlag = TRUE;
                        break;
                case SIG_SIMTRACE:
                        i_Trace = TRUE;
                    break;
                default:
                        printf(">",i_signo);
                        fflush(NULL);
                        e_Event = (BiteEvent)i_signo;
                        sigmask(TRUE);
                        break;
        }
}