1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/* $NetBSD: t_fpu.c,v 1.2 2013/01/27 14:47:37 mbalmer Exp $ */
/*
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_fpu.c,v 1.2 2013/01/27 14:47:37 mbalmer Exp $");
/*
* This is adapted from part of csw/cstest of the MPD implementation by
* the University of Arizona CS department (http://www.cs.arizona.edu/sr/)
* which is in the public domain:
*
* "The MPD system is in the public domain and you may use and distribute it
* as you wish. We ask that you retain credits referencing the University
* of Arizona and that you identify any changes you make.
*
* We can't provide a warranty with MPD; it's up to you to determine its
* suitability and reliability for your needs. We would like to hear of
* any problems you encounter but we cannot promise a timely correction."
*
* It was changed to use pthread_create() and sched_yield() instead of
* the internal MPD context switching primitives by Ignatios Souvatzis
* <is@netbsd.org>.
*/
#include <math.h>
#include <pthread.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <atf-c.h>
#ifdef __FreeBSD__
#include <errno.h>
#include <string.h>
#endif
#include "h_common.h"
#define N_RECURSE 10
static void recurse(void);
int recursion_depth = 0;
pthread_mutex_t recursion_depth_lock;
static void *
stir(void *p)
{
double *q = (double *)p;
double x = *q++;
double y = *q++;
double z = *q++;
for (;;) {
x = sin ((y = cos (x + y + .4)) - (z = cos (x + z + .6)));
#ifdef __FreeBSD__
ATF_REQUIRE_MSG(sched_yield() == 0,
"sched_yield failed: %s", strerror(errno));
#else
PTHREAD_REQUIRE(sched_yield());
#endif
}
}
static double
mul3(double x, double y, double z)
{
#ifdef __FreeBSD__
ATF_REQUIRE_MSG(sched_yield() == 0,
"sched_yield failed: %s", strerror(errno));
#else
PTHREAD_REQUIRE(sched_yield());
#endif
return x * y * z;
}
static void *
bar(void *p)
{
double d;
int rc;
d = mul3(mul3(2., 3., 5.), mul3(7., 11., 13.), mul3(17., 19., 23.));
ATF_REQUIRE_EQ(d, 223092870.);
PTHREAD_REQUIRE(pthread_mutex_lock(&recursion_depth_lock));
rc = recursion_depth++;
PTHREAD_REQUIRE(pthread_mutex_unlock(&recursion_depth_lock));
if (rc < N_RECURSE)
recurse();
else
atf_tc_pass();
/* NOTREACHED */
return NULL;
}
static void
recurse(void) {
pthread_t s2;
#ifdef __FreeBSD__
PTHREAD_REQUIRE(pthread_create(&s2, 0, bar, 0));
#else
pthread_create(&s2, 0, bar, 0);
#endif
sleep(20); /* XXX must be long enough for our slowest machine */
}
ATF_TC(fpu);
ATF_TC_HEAD(fpu, tc)
{
atf_tc_set_md_var(tc, "descr",
"Checks that thread context switches will leave the "
"floating point computations unharmed");
}
ATF_TC_BODY(fpu, tc)
{
double stirseed[] = { 1.7, 3.2, 2.4 };
pthread_t s5;
printf("Testing threaded floating point computations...\n");
PTHREAD_REQUIRE(pthread_mutex_init(&recursion_depth_lock, 0));
#ifdef __FreeBSD__
PTHREAD_REQUIRE(pthread_create(&s5, 0, stir, stirseed));
#else
pthread_create(&s5, 0, stir, stirseed);
#endif
recurse();
atf_tc_fail("exiting from main");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, fpu);
return atf_no_error();
}
|
