xref: /freebsd/contrib/netbsd-tests/lib/libpthread/t_condwait.c (revision d3d381b2b194b4d24853e92eecef55f262688d1a)
1 /* $NetBSD: t_condwait.c,v 1.5 2017/01/16 16:29:19 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 1.5 2017/01/16 16:29:19 christos Exp $");
30 
31 #include <sys/time.h>
32 #include <errno.h>
33 #include <pthread.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <time.h>
38 #include <unistd.h>
39 
40 #include <atf-c.h>
41 
42 #include "isqemu.h"
43 
44 #include "h_common.h"
45 
46 #define WAITTIME 2	/* Timeout wait secound */
47 
48 static const int debug = 1;
49 
50 static void *
51 run(void *param)
52 {
53 	struct timespec ts, to, te;
54 	clockid_t clck;
55 	pthread_condattr_t attr;
56 	pthread_cond_t cond;
57 	pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
58 	int ret = 0;
59 
60 
61 	clck = *(clockid_t *)param;
62 	PTHREAD_REQUIRE(pthread_condattr_init(&attr));
63 	PTHREAD_REQUIRE(pthread_condattr_setclock(&attr, clck));
64 	pthread_cond_init(&cond, &attr);
65 
66 	ATF_REQUIRE_EQ((ret = pthread_mutex_lock(&m)), 0);
67 
68 	ATF_REQUIRE_EQ(clock_gettime(clck, &ts), 0);
69 	to = ts;
70 
71 	if (debug)
72 		printf("started: %lld.%09ld sec\n", (long long)to.tv_sec,
73 		    to.tv_nsec);
74 
75 	ts.tv_sec += WAITTIME;	/* Timeout wait */
76 
77 	switch (ret = pthread_cond_timedwait(&cond, &m, &ts)) {
78 	case ETIMEDOUT:
79 		/* Timeout */
80 		ATF_REQUIRE_EQ(clock_gettime(clck, &te), 0);
81 		timespecsub(&te, &to, &to);
82 		if (debug) {
83 			printf("timeout: %lld.%09ld sec\n",
84 			    (long long)te.tv_sec, te.tv_nsec);
85 			printf("elapsed: %lld.%09ld sec\n",
86 			    (long long)to.tv_sec, to.tv_nsec);
87 		}
88 		if (isQEMU()) {
89 			double to_seconds = to.tv_sec + 1e-9 * to.tv_nsec;
90 			ATF_REQUIRE(to_seconds >= WAITTIME * 0.9);
91 			/* Loose upper limit because of qemu timing bugs */
92 			ATF_REQUIRE(to_seconds < WAITTIME * 2.5);
93 		} else {
94 			ATF_REQUIRE_EQ(to.tv_sec, WAITTIME);
95 		}
96 		break;
97 	default:
98 		ATF_REQUIRE_MSG(0, "pthread_cond_timedwait: %s", strerror(ret));
99 	}
100 
101 	ATF_REQUIRE_MSG(!(ret = pthread_mutex_unlock(&m)),
102 	    "pthread_mutex_unlock: %s", strerror(ret));
103 	pthread_exit(&ret);
104 }
105 
106 static void
107 cond_wait(clockid_t clck, const char *msg) {
108 	pthread_t child;
109 
110 	if (debug)
111 		printf( "**** %s clock wait starting\n", msg);
112 	ATF_REQUIRE_EQ(pthread_create(&child, NULL, run, &clck), 0);
113 	ATF_REQUIRE_EQ(pthread_join(child, NULL), 0); /* wait for terminate */
114 	if (debug)
115 		printf( "**** %s clock wait ended\n", msg);
116 }
117 
118 ATF_TC(cond_wait_real);
119 ATF_TC_HEAD(cond_wait_real, tc)
120 {
121 	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
122 	    "with CLOCK_REALTIME");
123 }
124 
125 ATF_TC_BODY(cond_wait_real, tc) {
126 	cond_wait(CLOCK_REALTIME, "CLOCK_REALTIME");
127 }
128 
129 ATF_TC(cond_wait_mono);
130 ATF_TC_HEAD(cond_wait_mono, tc)
131 {
132 	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
133 	    "with CLOCK_MONOTONIC");
134 }
135 
136 ATF_TC_BODY(cond_wait_mono, tc) {
137 	cond_wait(CLOCK_MONOTONIC, "CLOCK_MONOTONIC");
138 }
139 
140 ATF_TP_ADD_TCS(tp)
141 {
142 	ATF_TP_ADD_TC(tp, cond_wait_real);
143 	ATF_TP_ADD_TC(tp, cond_wait_mono);
144 	return 0;
145 }
146