1 /*	$OpenBSD: pthread_cond_timedwait.c,v 1.2 2001/09/20 16:43:15 todd 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 = PTHREAD_COND_INITIALIZER;
53 
54 void* thread_1(void * new_buf)
55 {
56 	CHECKr(pthread_mutex_lock(&mutex));
57 	CHECKr(pthread_cond_signal(&cond));
58 	CHECKr(pthread_mutex_unlock(&mutex));
59 	pthread_exit(NULL);
60 }
61 
62 void* thread_2(void * new_buf)
63 {
64 	sleep(1);
65 	CHECKr(pthread_mutex_lock(&mutex));
66 	CHECKr(pthread_cond_signal(&cond));
67 	CHECKr(pthread_mutex_unlock(&mutex));
68 	pthread_exit(NULL);
69 }
70 
71 int
72 main()
73 {
74 	struct timespec abstime = { 0, 0 };
75 	struct timeval curtime;
76 	pthread_t thread;
77 	int ret;
78 
79 	printf("pthread_cond_timedwait START\n");
80 
81 	CHECKr(pthread_mutex_lock(&mutex));
82 	CHECKe(gettimeofday(&curtime, NULL));
83 	abstime.tv_sec = curtime.tv_sec + 5;
84 
85 	/* Test a condition timeout */
86 	switch((ret = pthread_cond_timedwait(&cond, &mutex, &abstime))) {
87 	case 0:
88 		PANIC("pthread_cond_timedwait #0 failed to timeout");
89 		/* NOTREACHED */
90 	case ETIMEDOUT:
91 		/* expected behaviour */
92 		printf("Got first timeout ok\n");	/* Added by monty */
93 		break;
94 	default:
95 		DIE(ret, "pthread_cond_timedwait");
96 		/* NOTREACHED */
97 	}
98 
99 	/* Test a normal condition signal */
100 	CHECKr(pthread_create(&thread, NULL, thread_1, NULL));
101 
102 	abstime.tv_sec = curtime.tv_sec + 10;
103 	CHECKr(pthread_cond_timedwait(&cond, &mutex, &abstime));
104 
105 	/* Test a normal condition signal after a sleep */
106 	CHECKr(pthread_create(&thread, NULL, thread_2, NULL));
107 
108 	pthread_yield();
109 
110 	abstime.tv_sec = curtime.tv_sec + 10;
111 	CHECKr(pthread_cond_timedwait(&cond, &mutex, &abstime));
112 
113 	SUCCEED;
114 }
115