25 lines
522 B
C
25 lines
522 B
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)alarm.c 1.1 94/10/31 SMI"; /* from UCB 4.1 83/06/10 */
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#endif
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/*
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* Backwards compatible alarm.
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*/
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#include <sys/time.h>
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alarm(secs)
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int secs;
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{
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struct itimerval it, oitv;
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register struct itimerval *itp = ⁢
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timerclear(&itp->it_interval);
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itp->it_value.tv_sec = secs;
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itp->it_value.tv_usec = 0;
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if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
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return (-1);
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if (oitv.it_value.tv_usec)
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oitv.it_value.tv_sec++;
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return (oitv.it_value.tv_sec);
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}
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