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#pragma ident "%Z%%M% %I% %E% SMI"
/* from UCB 5.1 85/06/05 */
/*
* Copyright (c) 1985 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#include <sys/time.h>
#define USPS 1000000 /* # of microseconds in a second */
/*
* Generate a SIGALRM signal in ``usecs'' microseconds.
* If ``reload'' is non-zero, keep generating SIGALRM
* every ``reload'' microseconds after the first signal.
*/
unsigned
ualarm(usecs, reload)
register unsigned usecs;
register unsigned reload;
{
struct itimerval new, old;
new.it_interval.tv_usec = reload % USPS;
new.it_interval.tv_sec = reload / USPS;
new.it_value.tv_usec = usecs % USPS;
new.it_value.tv_sec = usecs / USPS;
if (setitimer(ITIMER_REAL, &new, &old) == 0)
return (old.it_value.tv_sec * USPS + old.it_value.tv_usec);
/* else */
return (-1);
}
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