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/*
* Please, don't add this file to libcommon because timers requires
* -lrt on systems with old libc (and probably also -lpthread for static
* build).
*/
#include <time.h>
#include <signal.h>
#include <sys/time.h>
#include "c.h"
#include "timer.h"
int setup_timer(timer_t * t_id, struct itimerval *timeout,
void (*timeout_handler)(int, siginfo_t *, void *))
{
struct sigaction sig_a;
static struct sigevent sig_e = {
.sigev_notify = SIGEV_SIGNAL,
.sigev_signo = SIGALRM
};
struct itimerspec val = {
.it_value.tv_sec = timeout->it_value.tv_sec,
.it_value.tv_nsec = timeout->it_value.tv_usec * 1000,
.it_interval.tv_sec = 0,
.it_interval.tv_nsec = 0
};
if (sigemptyset(&sig_a.sa_mask))
return 1;
sig_a.sa_flags = SA_SIGINFO;
sig_a.sa_sigaction = timeout_handler;
if (sigaction(SIGALRM, &sig_a, NULL))
return 1;
if (timer_create(CLOCK_MONOTONIC, &sig_e, t_id))
return 1;
if (timer_settime(*t_id, SA_SIGINFO, &val, NULL))
return 1;
return 0;
}
void cancel_timer(timer_t *t_id)
{
timer_delete(*t_id);
}
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