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
|
/* This tests destruction of a barrier right after waiting on it.
Copyright (C) 2004-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
static pthread_barrier_t b1;
static pthread_barrier_t b2;
#define N 20
static void *
tf (void *arg)
{
int round = 0;
while (round++ < 30)
{
if (pthread_barrier_wait (&b1) == PTHREAD_BARRIER_SERIAL_THREAD)
{
pthread_barrier_destroy (&b1);
if (pthread_barrier_init (&b1, NULL, N) != 0)
{
puts ("tf: 1st barrier_init failed");
exit (1);
}
}
if (pthread_barrier_wait (&b2) == PTHREAD_BARRIER_SERIAL_THREAD)
{
pthread_barrier_destroy (&b2);
if (pthread_barrier_init (&b2, NULL, N) != 0)
{
puts ("tf: 2nd barrier_init failed");
exit (1);
}
}
}
return NULL;
}
static int
do_test (void)
{
pthread_attr_t at;
int cnt;
if (pthread_attr_init (&at) != 0)
{
puts ("attr_init failed");
return 1;
}
if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
{
puts ("attr_setstacksize failed");
return 1;
}
if (pthread_barrier_init (&b1, NULL, N) != 0)
{
puts ("1st barrier_init failed");
return 1;
}
if (pthread_barrier_init (&b2, NULL, N) != 0)
{
puts ("2nd barrier_init failed");
return 1;
}
pthread_t th[N - 1];
for (cnt = 0; cnt < N - 1; ++cnt)
if (pthread_create (&th[cnt], &at, tf, NULL) != 0)
{
puts ("pthread_create failed");
return 1;
}
if (pthread_attr_destroy (&at) != 0)
{
puts ("attr_destroy failed");
return 1;
}
tf (NULL);
for (cnt = 0; cnt < N - 1; ++cnt)
if (pthread_join (th[cnt], NULL) != 0)
{
puts ("pthread_join failed");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
|
