Return to alarm.c CVS log

Up to [CSRG BSD Unix] / 43BSDReno / lib / libc / gen

Annotation of 43BSDReno/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.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #if defined(LIBC_SCCS) && !defined(lint)
        !            21: static char sccsid[] = "@(#)alarm.c    5.4 (Berkeley) 6/1/90";
        !            22: #endif /* LIBC_SCCS and not lint */
        !            23: 
        !            24: /*
        !            25:  * Backwards compatible alarm.
        !            26:  */
        !            27: #include <sys/time.h>
        !            28: 
        !            29: alarm(secs)
        !            30:        int secs;
        !            31: {
        !            32:        struct itimerval it, oitv;
        !            33:        register struct itimerval *itp = &it;
        !            34: 
        !            35:        timerclear(&itp->it_interval);
        !            36:        itp->it_value.tv_sec = secs;
        !            37:        itp->it_value.tv_usec = 0;
        !            38:        if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
        !            39:                return (-1);
        !            40:        if (oitv.it_value.tv_usec)
        !            41:                oitv.it_value.tv_sec++;
        !            42:        return (oitv.it_value.tv_sec);
        !            43: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.