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 #include <signal.h> 28 #include <stdlib.h> 29 #include <unistd.h> 30 31 /* 32 * The canonical name should be 'go' since we prefer symbol names with fewer 33 * leading underscores. 34 */ 35 36 extern int a; 37 38 int help(void); 39 int go(void); 40 41 int a = 100; 42 43 int 44 help(void) 45 { 46 return (a); 47 } 48 49 int 50 go(void) 51 { 52 return (help() + 1); 53 } 54 55 static void 56 handle(int sig __unused) 57 { 58 go(); 59 exit(0); 60 } 61 62 int 63 main(void) 64 { 65 (void) signal(SIGUSR1, handle); 66 for (;;) 67 getpid(); 68 } 69