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2359035a | 1 | /* Separate thread test for pthread_getaffinity_np, pthread_setaffinity_np. |
d614a753 | 2 | Copyright (C) 2015-2020 Free Software Foundation, Inc. |
2359035a FW |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
2359035a FW |
18 | |
19 | #include <errno.h> | |
20 | #include <pthread.h> | |
21 | #include <stdbool.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | ||
25 | /* Defined for the benefit of tst-skeleton-thread-affinity.c, included | |
26 | below. This variant runs the functions on a separate thread. */ | |
27 | ||
28 | struct affinity_access_task | |
29 | { | |
30 | pthread_t thread; | |
31 | cpu_set_t *set; | |
32 | size_t size; | |
33 | bool get; | |
34 | int result; | |
35 | }; | |
36 | ||
37 | static void * | |
38 | affinity_access_thread (void *closure) | |
39 | { | |
40 | struct affinity_access_task *task = closure; | |
41 | if (task->get) | |
42 | task->result = pthread_getaffinity_np | |
43 | (task->thread, task->size, task->set); | |
44 | else | |
45 | task->result = pthread_setaffinity_np | |
46 | (task->thread, task->size, task->set); | |
47 | return NULL; | |
48 | } | |
49 | ||
50 | static int | |
51 | run_affinity_access_thread (cpu_set_t *set, size_t size, bool get) | |
52 | { | |
53 | struct affinity_access_task task = | |
54 | { | |
55 | .thread = pthread_self (), | |
56 | .set = set, | |
57 | .size = size, | |
58 | .get = get | |
59 | }; | |
60 | pthread_t thr; | |
61 | int ret = pthread_create (&thr, NULL, affinity_access_thread, &task); | |
62 | if (ret != 0) | |
63 | { | |
64 | errno = ret; | |
65 | printf ("error: could not create affinity access thread: %m\n"); | |
66 | abort (); | |
67 | } | |
68 | ret = pthread_join (thr, NULL); | |
69 | if (ret != 0) | |
70 | { | |
71 | errno = ret; | |
72 | printf ("error: could not join affinity access thread: %m\n"); | |
73 | abort (); | |
74 | } | |
75 | if (task.result != 0) | |
76 | { | |
77 | errno = task.result; | |
78 | return -1; | |
79 | } | |
80 | return 0; | |
81 | } | |
82 | ||
83 | static int | |
84 | setaffinity (size_t size, const cpu_set_t *set) | |
85 | { | |
86 | return run_affinity_access_thread ((cpu_set_t *) set, size, false); | |
87 | } | |
88 | ||
89 | static int | |
90 | getaffinity (size_t size, cpu_set_t *set) | |
91 | { | |
92 | return run_affinity_access_thread (set, size, true); | |
93 | } | |
94 | ||
95 | #include "tst-skeleton-thread-affinity.c" |