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alarm.c,v
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1988-07-14
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923b
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55 lines
head 1.1;
access ;
symbols ;
locks ; strict;
comment @ * @;
1.1
date 88.07.14.13.32.07; author ouster; state Exp;
branches ;
next ;
desc
@@
1.1
log
@Initial revision
@
text
@/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@@(#)alarm.c 5.2 (Berkeley) 3/9/86";
#endif LIBC_SCCS and not lint
/*
* Backwards compatible alarm.
*/
#include <sys/time.h>
alarm(secs)
int secs;
{
struct itimerval it, oitv;
register struct itimerval *itp = ⁢
timerclear(&itp->it_interval);
itp->it_value.tv_sec = secs;
itp->it_value.tv_usec = 0;
if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
return (-1);
if (oitv.it_value.tv_usec)
oitv.it_value.tv_sec++;
return (oitv.it_value.tv_sec);
}
@