blob: 32ed83e5304ad0973d37a0694e71d092269f5a55 (
plain)
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
|
/* Copyright (C) 2002-2022 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 <semaphore.h>
#include <stdio.h>
#include <unistd.h>
static int
do_test (void)
{
sem_t s;
if (sem_init (&s, 0, 1) == -1)
{
puts ("init failed");
return 1;
}
if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1)
{
puts ("1st wait failed");
return 1;
}
if (sem_post (&s) == -1)
{
puts ("1st post failed");
return 1;
}
if (TEMP_FAILURE_RETRY (sem_trywait (&s)) == -1)
{
puts ("1st trywait failed");
return 1;
}
errno = 0;
if (TEMP_FAILURE_RETRY (sem_trywait (&s)) != -1)
{
puts ("2nd trywait succeeded");
return 1;
}
else if (errno != EAGAIN)
{
puts ("2nd trywait did not set errno to EAGAIN");
return 1;
}
if (sem_post (&s) == -1)
{
puts ("2nd post failed");
return 1;
}
if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1)
{
puts ("2nd wait failed");
return 1;
}
if (sem_destroy (&s) == -1)
{
puts ("destroy failed");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
|
