xref: /freebsd/contrib/netbsd-tests/lib/libpthread/t_condwait.c (revision 0677dfd1c4dadb62482e2c72fa4c6720902128a4)
1 /* $NetBSD: t_condwait.c,v 1.4 2013/04/12 17:18:11 christos Exp $ */
2 
3 /*
4  * Copyright (c) 2013 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26  * POSSIBILITY OF SUCH DAMAGE.
27  */
28 #include <sys/cdefs.h>
29 __RCSID("$NetBSD: t_condwait.c,v 1.4 2013/04/12 17:18:11 christos Exp $");
30 
31 #include <errno.h>
32 #include <pthread.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <time.h>
37 #include <unistd.h>
38 
39 #include <atf-c.h>
40 
41 #include "isqemu.h"
42 
43 #define WAITTIME 2	/* Timeout wait secound */
44 
45 static const int debug = 1;
46 
47 static void *
48 run(void *param)
49 {
50 	struct timespec ts, to, te;
51 	clockid_t clck;
52 	pthread_condattr_t attr;
53 	pthread_cond_t cond;
54 	pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
55 	int ret = 0;
56 
57 
58 	clck = *(clockid_t *)param;
59 	pthread_condattr_init(&attr);
60 	pthread_condattr_setclock(&attr, clck); /* MONOTONIC or MONOTONIC */
61 	pthread_cond_init(&cond, &attr);
62 
63 	ATF_REQUIRE_EQ((ret = pthread_mutex_lock(&m)), 0);
64 
65 	ATF_REQUIRE_EQ(clock_gettime(clck, &ts), 0);
66 	to = ts;
67 
68 	if (debug)
69 		printf("started: %lld.%09ld sec\n", (long long)to.tv_sec,
70 		    to.tv_nsec);
71 
72 	ts.tv_sec += WAITTIME;	/* Timeout wait */
73 
74 	switch (ret = pthread_cond_timedwait(&cond, &m, &ts)) {
75 	case ETIMEDOUT:
76 		/* Timeout */
77 		ATF_REQUIRE_EQ(clock_gettime(clck, &te), 0);
78 		timespecsub(&te, &to, &to);
79 		if (debug) {
80 			printf("timeout: %lld.%09ld sec\n",
81 			    (long long)te.tv_sec, te.tv_nsec);
82 			printf("elapsed: %lld.%09ld sec\n",
83 			    (long long)to.tv_sec, to.tv_nsec);
84 		}
85 		if (isQEMU()) {
86 			double to_seconds = to.tv_sec + 1e-9 * to.tv_nsec;
87 			ATF_REQUIRE(to_seconds >= WAITTIME * 0.9);
88 			/* Loose upper limit because of qemu timing bugs */
89 			ATF_REQUIRE(to_seconds < WAITTIME * 2.5);
90 		} else {
91 			ATF_REQUIRE_EQ(to.tv_sec, WAITTIME);
92 		}
93 		break;
94 	default:
95 		ATF_REQUIRE_MSG(0, "pthread_cond_timedwait: %s", strerror(ret));
96 	}
97 
98 	ATF_REQUIRE_MSG(!(ret = pthread_mutex_unlock(&m)),
99 	    "pthread_mutex_unlock: %s", strerror(ret));
100 	pthread_exit(&ret);
101 }
102 
103 static void
104 cond_wait(clockid_t clck, const char *msg) {
105 	pthread_t child;
106 
107 	if (debug)
108 		printf( "**** %s clock wait starting\n", msg);
109 	ATF_REQUIRE_EQ(pthread_create(&child, NULL, run, &clck), 0);
110 	ATF_REQUIRE_EQ(pthread_join(child, NULL), 0); /* wait for terminate */
111 	if (debug)
112 		printf( "**** %s clock wait ended\n", msg);
113 }
114 
115 ATF_TC(cond_wait_real);
116 ATF_TC_HEAD(cond_wait_real, tc)
117 {
118 	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
119 	    "with CLOCK_REALTIME");
120 }
121 
122 ATF_TC_BODY(cond_wait_real, tc) {
123 	cond_wait(CLOCK_REALTIME, "CLOCK_REALTIME");
124 }
125 
126 ATF_TC(cond_wait_mono);
127 ATF_TC_HEAD(cond_wait_mono, tc)
128 {
129 	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
130 	    "with CLOCK_MONOTONIC");
131 }
132 
133 ATF_TC_BODY(cond_wait_mono, tc) {
134 	cond_wait(CLOCK_MONOTONIC, "CLOCK_MONOTONIC");
135 }
136 
137 ATF_TP_ADD_TCS(tp)
138 {
139 	ATF_TP_ADD_TC(tp, cond_wait_real);
140 	ATF_TP_ADD_TC(tp, cond_wait_mono);
141 	return 0;
142 }
143