1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <signal.h>
30 #include <stdlib.h>
31 #include <unistd.h>
32 
33 /*
34  * The canonical name should be 'go' since we prefer symbol names with fewer
35  * leading underscores.
36  */
37 
38 #pragma weak _go = go
39 
40 int
41 go(int a)
42 {
43 	return (a + 1);
44 }
45 
46 static void
47 handle(int sig)
48 {
49 	_go(1);
50 	exit(0);
51 }
52 
53 int
54 main(int argc, char **argv)
55 {
56 	(void) signal(SIGUSR1, handle);
57 	for (;;)
58 		getpid();
59 }
60