1178476Sjb/* 2178476Sjb * CDDL HEADER START 3178476Sjb * 4178476Sjb * The contents of this file are subject to the terms of the 5178476Sjb * Common Development and Distribution License (the "License"). 6178476Sjb * You may not use this file except in compliance with the License. 7178476Sjb * 8178476Sjb * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9178476Sjb * or http://www.opensolaris.org/os/licensing. 10178476Sjb * See the License for the specific language governing permissions 11178476Sjb * and limitations under the License. 12178476Sjb * 13178476Sjb * When distributing Covered Code, include this CDDL HEADER in each 14178476Sjb * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15178476Sjb * If applicable, add the following below this CDDL HEADER, with the 16178476Sjb * fields enclosed by brackets "[]" replaced with your own identifying 17178476Sjb * information: Portions Copyright [yyyy] [name of copyright owner] 18178476Sjb * 19178476Sjb * CDDL HEADER END 20178476Sjb */ 21178476Sjb 22178476Sjb/* 23178476Sjb * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24178476Sjb * Use is subject to license terms. 25178476Sjb */ 26178476Sjb 27178476Sjb#pragma ident "%Z%%M% %I% %E% SMI" 28178476Sjb 29178476Sjb#include <signal.h> 30178476Sjb#include <time.h> 31178476Sjb#include <stdlib.h> 32178476Sjb#include <stdio.h> 33178476Sjb#include <errno.h> 34178476Sjb#include <string.h> 35178476Sjb 36178534Sjb#define NANOSEC 1000000000 37178534Sjb 38178476Sjbint 39178476Sjbmain(int argc, char **argv) 40178476Sjb{ 41178476Sjb struct sigevent ev; 42178476Sjb struct itimerspec ts; 43178476Sjb sigset_t set; 44178476Sjb timer_t tid; 45178476Sjb char *cmd = argv[0]; 46178534Sjb int sig; 47178476Sjb 48178476Sjb ev.sigev_notify = SIGEV_SIGNAL; 49178476Sjb ev.sigev_signo = SIGUSR1; 50178476Sjb 51178476Sjb if (timer_create(CLOCK_REALTIME, &ev, &tid) == -1) { 52178476Sjb (void) fprintf(stderr, "%s: cannot create CLOCK_HIGHRES " 53178476Sjb "timer: %s\n", cmd, strerror(errno)); 54178476Sjb exit(EXIT_FAILURE); 55178476Sjb } 56178476Sjb 57178476Sjb (void) sigemptyset(&set); 58178476Sjb (void) sigaddset(&set, SIGUSR1); 59178476Sjb (void) sigprocmask(SIG_BLOCK, &set, NULL); 60178476Sjb 61178476Sjb ts.it_value.tv_sec = 1; 62178476Sjb ts.it_value.tv_nsec = 0; 63178476Sjb ts.it_interval.tv_sec = 0; 64178476Sjb ts.it_interval.tv_nsec = NANOSEC / 2; 65178476Sjb 66178476Sjb if (timer_settime(tid, TIMER_RELTIME, &ts, NULL) == -1) { 67178476Sjb (void) fprintf(stderr, "%s: timer_settime() failed: %s\n", 68178476Sjb cmd, strerror(errno)); 69178476Sjb exit(EXIT_FAILURE); 70178476Sjb } 71178476Sjb 72178534Sjb do { 73178534Sjb (void) sigwait(&set, &sig); 74178534Sjb } while(sig != SIGUSR1); 75178476Sjb 76178476Sjb /*NOTREACHED*/ 77178476Sjb return (0); 78178476Sjb} 79