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Annotation of 43BSDTahoe/lib/libc/gen/alarm.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #if defined(LIBC_SCCS) && !defined(lint)
        !             8: static char sccsid[] = "@(#)alarm.c    5.2 (Berkeley) 3/9/86";
        !             9: #endif LIBC_SCCS and not lint
        !            10: 
        !            11: /*
        !            12:  * Backwards compatible alarm.
        !            13:  */
        !            14: #include <sys/time.h>
        !            15: 
        !            16: alarm(secs)
        !            17:        int secs;
        !            18: {
        !            19:        struct itimerval it, oitv;
        !            20:        register struct itimerval *itp = &it;
        !            21: 
        !            22:        timerclear(&itp->it_interval);
        !            23:        itp->it_value.tv_sec = secs;
        !            24:        itp->it_value.tv_usec = 0;
        !            25:        if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
        !            26:                return (-1);
        !            27:        if (oitv.it_value.tv_usec)
        !            28:                oitv.it_value.tv_sec++;
        !            29:        return (oitv.it_value.tv_sec);
        !            30: }

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