1 | /* Test concurrency level. |
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 | int i; |
30 | int err; |
31 | |
32 | i = pthread_getconcurrency (); |
33 | assert (i == 0); |
34 | |
35 | err = pthread_setconcurrency (level: -1); |
36 | assert (err == EINVAL); |
37 | |
38 | err = pthread_setconcurrency (level: 4); |
39 | assert (err == 0); |
40 | |
41 | i = pthread_getconcurrency (); |
42 | assert (i == 4); |
43 | |
44 | return 0; |
45 | } |
46 | |