19512fe85Sahl /*
29512fe85Sahl * CDDL HEADER START
39512fe85Sahl *
49512fe85Sahl * The contents of this file are subject to the terms of the
59512fe85Sahl * Common Development and Distribution License (the "License").
69512fe85Sahl * You may not use this file except in compliance with the License.
79512fe85Sahl *
89512fe85Sahl * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
99512fe85Sahl * or http://www.opensolaris.org/os/licensing.
109512fe85Sahl * See the License for the specific language governing permissions
119512fe85Sahl * and limitations under the License.
129512fe85Sahl *
139512fe85Sahl * When distributing Covered Code, include this CDDL HEADER in each
149512fe85Sahl * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
159512fe85Sahl * If applicable, add the following below this CDDL HEADER, with the
169512fe85Sahl * fields enclosed by brackets "[]" replaced with your own identifying
179512fe85Sahl * information: Portions Copyright [yyyy] [name of copyright owner]
189512fe85Sahl *
199512fe85Sahl * CDDL HEADER END
209512fe85Sahl */
219512fe85Sahl
229512fe85Sahl /*
23*73427c57Sahl * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
249512fe85Sahl * Use is subject to license terms.
259512fe85Sahl */
269512fe85Sahl
279512fe85Sahl #include <signal.h>
289512fe85Sahl #include <time.h>
299512fe85Sahl #include <stdlib.h>
309512fe85Sahl #include <stdio.h>
319512fe85Sahl #include <errno.h>
329512fe85Sahl #include <string.h>
339512fe85Sahl
34*73427c57Sahl int
main(int argc,char ** argv)359512fe85Sahl main(int argc, char **argv)
369512fe85Sahl {
379512fe85Sahl struct sigevent ev;
389512fe85Sahl struct itimerspec ts;
399512fe85Sahl sigset_t set;
409512fe85Sahl timer_t tid;
419512fe85Sahl char *cmd = argv[0];
429512fe85Sahl
439512fe85Sahl ev.sigev_notify = SIGEV_SIGNAL;
449512fe85Sahl ev.sigev_signo = SIGUSR1;
459512fe85Sahl
469512fe85Sahl if (timer_create(CLOCK_REALTIME, &ev, &tid) == -1) {
479512fe85Sahl (void) fprintf(stderr, "%s: cannot create CLOCK_HIGHRES "
489512fe85Sahl "timer: %s\n", cmd, strerror(errno));
499512fe85Sahl exit(EXIT_FAILURE);
509512fe85Sahl }
519512fe85Sahl
529512fe85Sahl (void) sigemptyset(&set);
539512fe85Sahl (void) sigaddset(&set, SIGUSR1);
549512fe85Sahl (void) sigprocmask(SIG_BLOCK, &set, NULL);
559512fe85Sahl
569512fe85Sahl ts.it_value.tv_sec = 1;
579512fe85Sahl ts.it_value.tv_nsec = 0;
589512fe85Sahl ts.it_interval.tv_sec = 0;
599512fe85Sahl ts.it_interval.tv_nsec = NANOSEC / 2;
609512fe85Sahl
619512fe85Sahl if (timer_settime(tid, TIMER_RELTIME, &ts, NULL) == -1) {
629512fe85Sahl (void) fprintf(stderr, "%s: timer_settime() failed: %s\n",
639512fe85Sahl cmd, strerror(errno));
649512fe85Sahl exit(EXIT_FAILURE);
659512fe85Sahl }
669512fe85Sahl
679512fe85Sahl for (;;) {
689512fe85Sahl (void) sigwait(&set);
699512fe85Sahl }
70*73427c57Sahl
71*73427c57Sahl /*NOTREACHED*/
72*73427c57Sahl return (0);
739512fe85Sahl }
74