1 /* $OpenBSD: pthread_cond_timedwait.c,v 1.7 2013/12/21 05:39:21 guenther Exp $ */
2 /*
3 * Copyright (c) 1993, 1994, 1995, 1996 by Chris Provenzano and contributors,
4 * proven@mit.edu All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Chris Provenzano,
17 * the University of California, Berkeley, and contributors.
18 * 4. Neither the name of Chris Provenzano, the University, nor the names of
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO, THE REGENTS OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 /* ==== test_pthread_cond.c =========================================
36 * Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu
37 *
38 * Description : Test pthread_cond(). Run this after test_create()
39 *
40 * 1.23 94/05/04 proven
41 * -Started coding this file.
42 */
43
44 #include <pthread.h>
45 #include <stdio.h>
46 #include <errno.h>
47 #include <unistd.h>
48 #include <stdlib.h>
49 #include "test.h"
50
51 pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
52 pthread_cond_t cond;
53
54 static void *
thread_1(void * new_buf)55 thread_1(void * new_buf)
56 {
57 CHECKr(pthread_mutex_lock(&mutex));
58 CHECKr(pthread_cond_signal(&cond));
59 CHECKr(pthread_mutex_unlock(&mutex));
60 pthread_exit(NULL);
61 }
62
63 static void *
thread_2(void * new_buf)64 thread_2(void * new_buf)
65 {
66 sleep(1);
67 CHECKr(pthread_mutex_lock(&mutex));
68 CHECKr(pthread_cond_signal(&cond));
69 CHECKr(pthread_mutex_unlock(&mutex));
70 pthread_exit(NULL);
71 }
72
73 int
main(int argc,char * argv[])74 main(int argc, char *argv[])
75 {
76 struct timespec abstime;
77 struct timespec begtime;
78 struct timespec endtime;
79 pthread_t thread;
80 pthread_condattr_t condattr;
81 int ret;
82 int ix;
83
84 printf("pthread_cond_timedwait START\n");
85
86 CHECKr(pthread_condattr_init(&condattr));
87 CHECKr(pthread_condattr_setclock(&condattr, CLOCK_MONOTONIC));
88 CHECKr(pthread_cond_init(&cond, &condattr));
89
90 CHECKr(pthread_mutex_lock(&mutex));
91 CHECKe(clock_gettime(CLOCK_MONOTONIC, &begtime));
92 abstime = begtime;
93
94 for (ix = 0; ix < 2; ix++) {
95 abstime.tv_sec += 5;
96
97 /* Test a condition timeout */
98 switch((ret = pthread_cond_timedwait(&cond, &mutex, &abstime))) {
99 case 0:
100 PANIC("pthread_cond_timedwait #0 failed to timeout");
101 /* NOTREACHED */
102 case ETIMEDOUT:
103 /* expected behaviour */
104 CHECKe(clock_gettime(CLOCK_MONOTONIC, &endtime));
105 timespecsub(&endtime, &begtime, &endtime);
106 printf("Got timeout %d in %lld.%09ld seconds\n", ix,
107 (long long)endtime.tv_sec, endtime.tv_nsec);
108 break;
109 default:
110 DIE(ret, "pthread_cond_timedwait");
111 /* NOTREACHED */
112 }
113 }
114
115 /* Test a normal condition signal */
116 CHECKr(pthread_create(&thread, NULL, thread_1, NULL));
117
118 abstime.tv_sec += 5;
119 CHECKr(pthread_cond_timedwait(&cond, &mutex, &abstime));
120
121 /* Test a normal condition signal after a sleep */
122 CHECKr(pthread_create(&thread, NULL, thread_2, NULL));
123
124 pthread_yield();
125
126 CHECKr(pthread_cond_timedwait(&cond, &mutex, &abstime));
127
128 SUCCEED;
129 }
130