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33574c17 | 1 | /* Test concurrency level. |
04277e02 | 2 | Copyright (C) 2000-2019 Free Software Foundation, Inc. |
33574c17 ST |
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 | |
ad2b41bf ST |
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. | |
33574c17 ST |
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 | |
ad2b41bf | 13 | Lesser General Public License for more details. |
33574c17 | 14 | |
ad2b41bf ST |
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 | <http://www.gnu.org/licenses/>. */ | |
33574c17 ST |
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 (-1); | |
36 | assert (err == EINVAL); | |
37 | ||
38 | err = pthread_setconcurrency (4); | |
39 | assert (err == 0); | |
40 | ||
41 | i = pthread_getconcurrency (); | |
42 | assert (i == 4); | |
43 | ||
44 | return 0; | |
45 | } |