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TIMER: Assure that long duration co-scheduled events are properly dispatched

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As discussed in #478
This commit is contained in:
Mark Pizzolato 2017-08-01 06:49:05 -07:00
parent d6316cbd03
commit a02e9c1111
1 changed files with 18 additions and 9 deletions
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27
sim_timer.c
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@ -1870,6 +1870,9 @@ if (sim_clock_cosched_queue[tmr] != QUEUE_LIST_END)
if ((stat == SCPE_OK) &&
(sim_cosched_interval[tmr] <= 0) &&
(sim_clock_cosched_queue[tmr] != QUEUE_LIST_END)) {
UNIT *sptr = sim_clock_cosched_queue[tmr];
UNIT *cptr = QUEUE_LIST_END;
if (rtc_clock_catchup_eligible[tmr]) { /* calibration started? */
struct timespec now;
double skew;
@ -1880,30 +1883,36 @@ if ((stat == SCPE_OK) &&
if (fabs(skew) > fabs(rtc_clock_skew_max[tmr]))
rtc_clock_skew_max[tmr] = skew;
}
/* First gather the queued events that are scheduled for now */
do {
UNIT *cptr = sim_clock_cosched_queue[tmr];
cptr = sim_clock_cosched_queue[tmr];
sim_clock_cosched_queue[tmr] = cptr->next;
cptr->next = NULL;
cptr->cancel = NULL;
cptr->time = 0;
if (sim_clock_cosched_queue[tmr] != QUEUE_LIST_END) {
sim_clock_cosched_queue[tmr]->time += sim_cosched_interval[tmr];
sim_cosched_interval[tmr] = sim_clock_cosched_queue[tmr]->time;
}
else
sim_cosched_interval[tmr] = 0;
} while ((sim_cosched_interval[tmr] <= 0) &&
(sim_clock_cosched_queue[tmr] != QUEUE_LIST_END));
if (cptr != QUEUE_LIST_END)
cptr->next = QUEUE_LIST_END;
/* Now dispatch that list (in order). */
while (sptr != QUEUE_LIST_END) {
cptr = sptr;
sptr = sptr->next;
cptr->next = NULL;
cptr->cancel = NULL;
cptr->time = 0;
sim_debug (DBG_QUE, &sim_timer_dev, "sim_timer_tick_svc(tmr=%d) - coactivating %s", tmr, sim_uname (cptr));
if (cptr->usecs_remaining) {
sim_debug (DBG_QUE, &sim_timer_dev, " remnant: %.0f - next %s after cosched interval: %d ticks\n", cptr->usecs_remaining, (sim_clock_cosched_queue[tmr] != QUEUE_LIST_END) ? sim_uname (sim_clock_cosched_queue[tmr]) : "", sim_cosched_interval[tmr]);
sim_debug (DBG_QUE, &sim_timer_dev, " remnant: %.0f - next %s after cosched interval: %d ticks\n", cptr->usecs_remaining, (sptr != QUEUE_LIST_END) ? sim_uname (sptr) : "", sim_cosched_interval[tmr]);
sim_timer_activate_after (cptr, cptr->usecs_remaining);
}
else {
sim_debug (DBG_QUE, &sim_timer_dev, " - next %s after cosched interval: %d ticks\n", (sim_clock_cosched_queue[tmr] != QUEUE_LIST_END) ? sim_uname (sim_clock_cosched_queue[tmr]) : "", sim_cosched_interval[tmr]);
sim_debug (DBG_QUE, &sim_timer_dev, " - next %s after cosched interval: %d ticks\n", (sptr != QUEUE_LIST_END) ? sim_uname (sptr) : "", sim_cosched_interval[tmr]);
_sim_activate (cptr, 0);
}
} while ((sim_cosched_interval[tmr] <= 0) &&
(sim_clock_cosched_queue[tmr] != QUEUE_LIST_END));
}
}
return stat;
}