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
|
/* Test error checking mutexes.
Copyright (C) 2000-2018 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
<http://www.gnu.org/licenses/>. */
#define _GNU_SOURCE
#include <pthread.h>
#include <assert.h>
#include <error.h>
#include <errno.h>
int
main (int argc, char **argv)
{
error_t err;
pthread_mutexattr_t mattr;
pthread_mutex_t mutex;
err = pthread_mutexattr_init (&mattr);
if (err)
error (1, err, "pthread_mutexattr_init");
err = pthread_mutexattr_settype (&mattr, PTHREAD_MUTEX_ERRORCHECK);
if (err)
error (1, err, "pthread_mutexattr_settype");
err = pthread_mutex_init (&mutex, &mattr);
if (err)
error (1, err, "pthread_mutex_init");
err = pthread_mutexattr_destroy (&mattr);
if (err)
error (1, err, "pthread_mutexattr_destroy");
err = pthread_mutex_lock (&mutex);
assert (err == 0);
err = pthread_mutex_lock (&mutex);
assert (err == EDEADLK);
err = pthread_mutex_unlock (&mutex);
assert (err == 0);
err = pthread_mutex_unlock (&mutex);
assert (err == EPERM);
return 0;
}
|
