xref: /onnv-gate/usr/src/lib/libbc/libc/gen/common/alarm.c (revision 722:636b850d4ee9)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
50Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
60Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
70Sstevel@tonic-gate  * with the License.
80Sstevel@tonic-gate  *
90Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
100Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
110Sstevel@tonic-gate  * See the License for the specific language governing permissions
120Sstevel@tonic-gate  * and limitations under the License.
130Sstevel@tonic-gate  *
140Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
150Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
160Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
170Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
180Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
190Sstevel@tonic-gate  *
200Sstevel@tonic-gate  * CDDL HEADER END
210Sstevel@tonic-gate  */
22*722Smuffin /*
23*722Smuffin  * Copyright 1990 Sun Microsystems, Inc.  All rights reserved.
24*722Smuffin  * Use is subject to license terms.
25*722Smuffin  */
26*722Smuffin 
270Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
280Sstevel@tonic-gate 
290Sstevel@tonic-gate /*
300Sstevel@tonic-gate  * Backwards compatible alarm.
310Sstevel@tonic-gate  */
320Sstevel@tonic-gate #include <sys/time.h>
330Sstevel@tonic-gate 
34*722Smuffin unsigned int
alarm(unsigned int secs)35*722Smuffin alarm(unsigned int secs)
360Sstevel@tonic-gate {
370Sstevel@tonic-gate 	struct itimerval it, oitv;
38*722Smuffin 	struct itimerval *itp = &it;
390Sstevel@tonic-gate 
400Sstevel@tonic-gate 	timerclear(&itp->it_interval);
410Sstevel@tonic-gate 	itp->it_value.tv_sec = secs;
420Sstevel@tonic-gate 	itp->it_value.tv_usec = 0;
430Sstevel@tonic-gate 	if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
440Sstevel@tonic-gate 		return (-1);
450Sstevel@tonic-gate 	if (oitv.it_value.tv_usec)
460Sstevel@tonic-gate 		oitv.it_value.tv_sec++;
470Sstevel@tonic-gate 	return (oitv.it_value.tv_sec);
480Sstevel@tonic-gate }
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