1 | /* Separate thread test for pthread_getaffinity_np, pthread_setaffinity_np. |
2 | Copyright (C) 2015-2022 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 <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 | (th: task->thread, cpusetsize: task->size, cpuset: task->set); |
44 | else |
45 | task->result = pthread_setaffinity_np |
46 | (th: task->thread, cpusetsize: task->size, cpuset: 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 (newthread: &thr, NULL, start_routine: affinity_access_thread, arg: &task); |
62 | if (ret != 0) |
63 | { |
64 | errno = ret; |
65 | printf (format: "error: could not create affinity access thread: %m\n" ); |
66 | abort (); |
67 | } |
68 | ret = pthread_join (th: thr, NULL); |
69 | if (ret != 0) |
70 | { |
71 | errno = ret; |
72 | printf (format: "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 (set: (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" |
96 | |