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33099d72 | 1 | /* Tests for sched_getaffinity with large buffers. |
6d7e8eda | 2 | Copyright (C) 2021-2023 Free Software Foundation, Inc. |
33099d72 AZ |
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> |