t_condwait.c revision 314817 
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
48static const int debug = 1;
49
50static void *
51run(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
106static void
107cond_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
118ATF_TC(cond_wait_real);
119ATF_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
125ATF_TC_BODY(cond_wait_real, tc) {
126	cond_wait(CLOCK_REALTIME, "CLOCK_REALTIME");
127}
128
129ATF_TC(cond_wait_mono);
130ATF_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
136ATF_TC_BODY(cond_wait_mono, tc) {
137	cond_wait(CLOCK_MONOTONIC, "CLOCK_MONOTONIC");
138}
139
140ATF_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