1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008, David Xu <davidxu@freebsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "namespace.h"
30 #include <pthread_np.h>
31 #include <sys/param.h>
32 #include <sys/cpuset.h>
33 #include "un-namespace.h"
34
35 #include "thr_private.h"
36
37 __weak_reference(_pthread_getaffinity_np, pthread_getaffinity_np);
38 __weak_reference(_pthread_setaffinity_np, pthread_setaffinity_np);
39
40 int
_pthread_setaffinity_np(pthread_t td,size_t cpusetsize,const cpuset_t * cpusetp)41 _pthread_setaffinity_np(pthread_t td, size_t cpusetsize, const cpuset_t *cpusetp)
42 {
43 struct pthread *curthread = _get_curthread();
44 lwpid_t tid;
45 int error;
46
47 if (td == curthread) {
48 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
49 -1, cpusetsize, cpusetp);
50 if (error == -1)
51 error = errno;
52 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) {
53 tid = TID(td);
54 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
55 cpusetsize, cpusetp);
56 if (error == -1)
57 error = errno;
58 THR_THREAD_UNLOCK(curthread, td);
59 }
60 return (error);
61 }
62
63 int
_pthread_getaffinity_np(pthread_t td,size_t cpusetsize,cpuset_t * cpusetp)64 _pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp)
65 {
66 struct pthread *curthread = _get_curthread();
67 lwpid_t tid;
68 int error;
69
70 if (td == curthread) {
71 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
72 -1, cpusetsize, cpusetp);
73 if (error == -1)
74 error = errno;
75 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) {
76 tid = TID(td);
77 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
78 cpusetsize, cpusetp);
79 if (error == -1)
80 error = errno;
81 THR_THREAD_UNLOCK(curthread, td);
82 }
83 return (error);
84 }
85