[BACK]Return to alarm.c CVS log [TXT][DIR] Up to [cvs.NetBSD.org] / src / lib / libc / gen

Annotation of src/lib/libc/gen/alarm.c, Revision 1.4

1.4     ! cgd         1: /*     $NetBSD$        */
        !             2:
1.1       cgd         3: /*
1.4     ! cgd         4:  * Copyright (c) 1983, 1993
        !             5:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *     This product includes software developed by the University of
                     18:  *     California, Berkeley and its contributors.
                     19:  * 4. Neither the name of the University nor the names of its contributors
                     20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  */
                     35:
                     36: #if defined(LIBC_SCCS) && !defined(lint)
1.4     ! cgd        37: #if 0
        !            38: static char sccsid[] = "@(#)alarm.c    8.1 (Berkeley) 6/4/93";
        !            39: #else
        !            40: static char rcsid[] = "$NetBSD$";
        !            41: #endif
1.1       cgd        42: #endif /* LIBC_SCCS and not lint */
                     43:
                     44: /*
                     45:  * Backwards compatible alarm.
                     46:  */
                     47: #include <sys/time.h>
                     48: #include <unistd.h>
                     49:
                     50: unsigned int
                     51: alarm(secs)
                     52:        unsigned int secs;
                     53: {
                     54:        struct itimerval it, oitv;
                     55:        register struct itimerval *itp = &it;
                     56:
                     57:        timerclear(&itp->it_interval);
                     58:        itp->it_value.tv_sec = secs;
                     59:        itp->it_value.tv_usec = 0;
                     60:        if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
                     61:                return (-1);
                     62:        if (oitv.it_value.tv_usec)
                     63:                oitv.it_value.tv_sec++;
                     64:        return (oitv.it_value.tv_sec);
                     65: }

CVSweb <webmaster@jp.NetBSD.org>