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Cygwin: posix timers: fix overrun computation 

- Drop initial overrun computation from timer_tracker::settimer.
  It's performed in timer_tracker::thread_func anyway.

- Fix regression in returning correct overrun count narrowed down to
  int from timer_getoverrun.  This has been introduced by changing
  overrun_count_curr to LONG64.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2019-01-16 00:11:03 +01:00
parent 5b147c76d2
commit 89a99d3b58
1 changed files with 8 additions and 17 deletions
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23
winsup/cygwin/timer.cc
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@ -369,22 +369,9 @@ timer_tracker::settime (int in_flags, const itimerspec *value, itimerspec *ovalu
else
{
interval_us = timespec_to_us (value->it_interval);
if (in_flags & TIMER_ABSTIME)
{
int64_t now = get_clock (clock_id)->usecs ();
sleepto_us = timespec_to_us (value->it_value);
if (sleepto_us <= now)
{
int64_t ov_cnt = (now - sleepto_us + (interval_us + 1))
/ interval_us;
InterlockedAdd64 (&overrun_count, ov_cnt);
sleepto_us += ov_cnt * interval_us;
}
}
else
sleepto_us = get_clock (clock_id)->usecs ()
+ timespec_to_us (value->it_value);
if (!(in_flags & TIMER_ABSTIME))
sleepto_us += get_clock (clock_id)->usecs ();
it_interval = value->it_interval;
if (!hcancel)
hcancel = CreateEvent (&sec_none_nih, TRUE, FALSE, NULL);
@ -564,7 +551,11 @@ timer_getoverrun (timer_t timerid)
set_errno (EINVAL);
__leave;
}
ret = tt->getoverrun ();
LONG64 ov_cnt = tt->getoverrun ();
if (ov_cnt > DELAYTIMER_MAX || ov_cnt < 0)
ret = DELAYTIMER_MAX;
else
ret = ov_cnt;
}
__except (EFAULT) {}
__endtry