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#ifdef __FreeBSD__
44#include <sys/time.h>
45#endif
46
47#define WAITTIME 2	/* Timeout wait secound */
48
49static const int debug = 1;
50
51static void *
52run(void *param)
53{
54	struct timespec ts, to, te;
55	clockid_t clck;
56	pthread_condattr_t attr;
57	pthread_cond_t cond;
58	pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
59	int ret = 0;
60
61
62	clck = *(clockid_t *)param;
63	pthread_condattr_init(&attr);
64	pthread_condattr_setclock(&attr, clck); /* MONOTONIC or MONOTONIC */
65	pthread_cond_init(&cond, &attr);
66
67	ATF_REQUIRE_EQ((ret = pthread_mutex_lock(&m)), 0);
68
69	ATF_REQUIRE_EQ(clock_gettime(clck, &ts), 0);
70	to = ts;
71
72	if (debug)
73		printf("started: %lld.%09ld sec\n", (long long)to.tv_sec,
74		    to.tv_nsec);
75
76	ts.tv_sec += WAITTIME;	/* Timeout wait */
77
78	switch (ret = pthread_cond_timedwait(&cond, &m, &ts)) {
79	case ETIMEDOUT:
80		/* Timeout */
81		ATF_REQUIRE_EQ(clock_gettime(clck, &te), 0);
82		timespecsub(&te, &to, &to);
83		if (debug) {
84			printf("timeout: %lld.%09ld sec\n",
85			    (long long)te.tv_sec, te.tv_nsec);
86			printf("elapsed: %lld.%09ld sec\n",
87			    (long long)to.tv_sec, to.tv_nsec);
88		}
89		if (isQEMU()) {
90			double to_seconds = to.tv_sec + 1e-9 * to.tv_nsec;
91			ATF_REQUIRE(to_seconds >= WAITTIME * 0.9);
92			/* Loose upper limit because of qemu timing bugs */
93			ATF_REQUIRE(to_seconds < WAITTIME * 2.5);
94		} else {
95			ATF_REQUIRE_EQ(to.tv_sec, WAITTIME);
96		}
97		break;
98	default:
99		ATF_REQUIRE_MSG(0, "pthread_cond_timedwait: %s", strerror(ret));
100	}
101
102	ATF_REQUIRE_MSG(!(ret = pthread_mutex_unlock(&m)),
103	    "pthread_mutex_unlock: %s", strerror(ret));
104	pthread_exit(&ret);
105}
106
107static void
108cond_wait(clockid_t clck, const char *msg) {
109	pthread_t child;
110
111	if (debug)
112		printf( "**** %s clock wait starting\n", msg);
113	ATF_REQUIRE_EQ(pthread_create(&child, NULL, run, &clck), 0);
114	ATF_REQUIRE_EQ(pthread_join(child, NULL), 0); /* wait for terminate */
115	if (debug)
116		printf( "**** %s clock wait ended\n", msg);
117}
118
119ATF_TC(cond_wait_real);
120ATF_TC_HEAD(cond_wait_real, tc)
121{
122	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
123	    "with CLOCK_REALTIME");
124}
125
126ATF_TC_BODY(cond_wait_real, tc) {
127	cond_wait(CLOCK_REALTIME, "CLOCK_REALTIME");
128}
129
130ATF_TC(cond_wait_mono);
131ATF_TC_HEAD(cond_wait_mono, tc)
132{
133	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
134	    "with CLOCK_MONOTONIC");
135}
136
137ATF_TC_BODY(cond_wait_mono, tc) {
138	cond_wait(CLOCK_MONOTONIC, "CLOCK_MONOTONIC");
139}
140
141ATF_TP_ADD_TCS(tp)
142{
143	ATF_TP_ADD_TC(tp, cond_wait_real);
144	ATF_TP_ADD_TC(tp, cond_wait_mono);
145	return 0;
146}
147