1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 #include <stdio.h>
29 #include <time.h>
30 #include <signal.h>
31 #include <pthread.h>
32 #include <string.h>
33 #include <unistd.h>
34
35 void
handle(sigval_t v)36 handle(sigval_t v)
37 {
38 time_t t;
39 char p[32];
40
41 time(&t);
42 strftime(p, sizeof(p), "%T", localtime(&t));
43 printf("%s thread %d, val = %d, signal captured.\n",
44 p, (int)pthread_self(), v.sival_int);
45 return;
46 }
47
48 int
create(int seconds,int id)49 create(int seconds, int id)
50 {
51 timer_t tid;
52 struct sigevent se;
53 struct itimerspec ts, ots;
54
55 memset(&se, 0, sizeof (se));
56 se.sigev_notify = SIGEV_THREAD;
57 se.sigev_notify_function = handle;
58 se.sigev_value.sival_int = id;
59
60 if (timer_create (CLOCK_REALTIME, &se, &tid) < 0)
61 {
62 perror ("timer_creat");
63 return -1;
64 }
65 puts ("timer_create successfully.");
66 ts.it_value.tv_sec = 3;
67 ts.it_value.tv_nsec = 0;
68 ts.it_interval.tv_sec = seconds;
69 ts.it_interval.tv_nsec = 0;
70 if (timer_settime (tid, TIMER_ABSTIME, &ts, &ots) < 0)
71 {
72 perror ("timer_settime");
73 return -1;
74 }
75 return 0;
76 }
77
78 int
main(void)79 main (void)
80 {
81 if (create (3, 1) < 0) return 1;
82 if (create (5, 2) < 0) return 1;
83 for (;;)
84 {
85 sleep (10);
86 }
87 return 0;
88 }
89