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
|
/* Copyright (C) 2002-2021 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 <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define N 100
static pthread_once_t once = PTHREAD_ONCE_INIT;
static int global;
static void
once_handler (void)
{
struct timespec ts;
++global;
ts.tv_sec = 2;
ts.tv_nsec = 0;
nanosleep (&ts, NULL);
}
static void *
tf (void *arg)
{
pthread_once (&once, once_handler);
if (global != 1)
{
printf ("thread %ld: global == %d\n", (long int) arg, global);
exit (1);
}
return NULL;
}
static int
do_test (void)
{
pthread_attr_t at;
pthread_t th[N];
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;
}
for (cnt = 0; cnt < N; ++cnt)
if (pthread_create (&th[cnt], &at, tf, (void *) (long int) cnt) != 0)
{
printf ("creation of thread %d failed\n", cnt);
return 1;
}
if (pthread_attr_destroy (&at) != 0)
{
puts ("attr_destroy failed");
return 1;
}
for (cnt = 0; cnt < N; ++cnt)
if (pthread_join (th[cnt], NULL) != 0)
{
printf ("join of thread %d failed\n", cnt);
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
|
