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1. Set timer configuration values for sysconf().

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2. Set overrun limit to INT_MAX, report ERANGE error if overrun will be
   greater than INT_MAX.
This commit is contained in:
David Xu 2005-12-01 07:56:15 +00:00
parent 0f2755724b
commit 77e718f773
1 changed files with 15 additions and 2 deletions
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17
sys/kern/kern_time.c
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@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/mac.h>
#include <sys/syscallsubr.h>
#include <sys/sysctl.h>
#include <sys/sysent.h>
#include <sys/proc.h>
#include <sys/time.h>
@ -51,6 +52,8 @@ __FBSDID("$FreeBSD$");
#include <sys/timetc.h>
#include <sys/vnode.h>
#include <posix4/posix4.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
@ -883,6 +886,9 @@ itimer_start(void)
NULL, NULL, itimer_init, itimer_fini, UMA_ALIGN_PTR, 0);
register_posix_clock(CLOCK_REALTIME, &rt_clock);
register_posix_clock(CLOCK_MONOTONIC, &rt_clock);
p31b_setcfg(CTL_P1003_1B_TIMERS, 200112L);
p31b_setcfg(CTL_P1003_1B_DELAYTIMER_MAX, INT_MAX);
p31b_setcfg(CTL_P1003_1B_TIMER_MAX, TIMER_MAX);
}
int
@ -1408,7 +1414,10 @@ realtimer_expire(void *arg)
timespecadd(&it->it_time.it_value,
&it->it_time.it_interval);
while (timespeccmp(&cts, &it->it_time.it_value, >=)) {
it->it_overrun++;
if (it->it_overrun < INT_MAX)
it->it_overrun++;
else
it->it_ksi.ksi_errno = ERANGE;
timespecadd(&it->it_time.it_value,
&it->it_time.it_interval);
}
@ -1445,6 +1454,7 @@ itimer_fire(struct itimer *it)
it->it_sigev.sigev_notify == SIGEV_THREAD_ID) {
PROC_LOCK(p);
if (!KSI_ONQ(&it->it_ksi)) {
it->it_ksi.ksi_errno = 0;
ret = psignal_event(p, &it->it_sigev, &it->it_ksi);
if (__predict_false(ret != 0)) {
it->it_overrun++;
@ -1461,7 +1471,10 @@ itimer_fire(struct itimer *it)
}
}
} else {
it->it_overrun++;
if (it->it_overrun < INT_MAX)
it->it_overrun++;
else
it->it_ksi.ksi_errno = ERANGE;
}
PROC_UNLOCK(p);
}