1 | /* Test error checking mutexes. |
2 | Copyright (C) 2000-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #define _GNU_SOURCE |
20 | |
21 | #include <pthread.h> |
22 | #include <assert.h> |
23 | #include <error.h> |
24 | #include <errno.h> |
25 | |
26 | int |
27 | main (int argc, char **argv) |
28 | { |
29 | error_t err; |
30 | pthread_mutexattr_t mattr; |
31 | pthread_mutex_t mutex; |
32 | |
33 | err = pthread_mutexattr_init (attr: &mattr); |
34 | if (err) |
35 | error (status: 1, errnum: err, format: "pthread_mutexattr_init" ); |
36 | |
37 | err = pthread_mutexattr_settype (attr: &mattr, kind: PTHREAD_MUTEX_ERRORCHECK); |
38 | if (err) |
39 | error (status: 1, errnum: err, format: "pthread_mutexattr_settype" ); |
40 | |
41 | err = pthread_mutex_init (mutex: &mutex, mutexattr: &mattr); |
42 | if (err) |
43 | error (status: 1, errnum: err, format: "pthread_mutex_init" ); |
44 | |
45 | err = pthread_mutexattr_destroy (attr: &mattr); |
46 | if (err) |
47 | error (status: 1, errnum: err, format: "pthread_mutexattr_destroy" ); |
48 | |
49 | err = pthread_mutex_lock (mutex: &mutex); |
50 | assert (err == 0); |
51 | |
52 | err = pthread_mutex_lock (mutex: &mutex); |
53 | assert (err == EDEADLK); |
54 | |
55 | err = pthread_mutex_unlock (mutex: &mutex); |
56 | assert (err == 0); |
57 | |
58 | err = pthread_mutex_unlock (mutex: &mutex); |
59 | assert (err == EPERM); |
60 | |
61 | return 0; |
62 | } |
63 | |