1 | /* Tests for sched_getaffinity with large buffers. |
2 | Copyright (C) 2021-2022 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 | #include <array_length.h> |
20 | #include <sched.h> |
21 | #include <support/check.h> |
22 | |
23 | /* NB: this test may fail on system with more than 32k cpus. */ |
24 | |
25 | static int |
26 | do_test (void) |
27 | { |
28 | /* The values are larger than the default cpu_set_t. */ |
29 | const int bufsize[] = { 1<<11, 1<<12, 1<<13, 1<<14, 1<<15, 1<<16, 1<<17 }; |
30 | int cpucount[array_length (bufsize)]; |
31 | |
32 | for (int i = 0; i < array_length (bufsize); i++) |
33 | { |
34 | cpu_set_t *cpuset = CPU_ALLOC (bufsize[i]); |
35 | TEST_VERIFY (cpuset != NULL); |
36 | size_t size = CPU_ALLOC_SIZE (bufsize[i]); |
37 | TEST_COMPARE (sched_getaffinity (0, size, cpuset), 0); |
38 | cpucount[i] = CPU_COUNT_S (size, cpuset); |
39 | CPU_FREE (cpuset); |
40 | } |
41 | |
42 | for (int i = 0; i < array_length (cpucount) - 1; i++) |
43 | TEST_COMPARE (cpucount[i], cpucount[i + 1]); |
44 | |
45 | return 0; |
46 | } |
47 | |
48 | #include <support/test-driver.c> |
49 | |