1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2008, David Xu <[email protected]>
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 <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include "namespace.h"
33 #include <pthread_np.h>
34 #include <sys/param.h>
35 #include <sys/cpuset.h>
36 #include "un-namespace.h"
37
38 #include "thr_private.h"
39
40 __weak_reference(_pthread_getaffinity_np, pthread_getaffinity_np);
41 __weak_reference(_pthread_setaffinity_np, pthread_setaffinity_np);
42
43 int
_pthread_setaffinity_np(pthread_t td,size_t cpusetsize,const cpuset_t * cpusetp)44 _pthread_setaffinity_np(pthread_t td, size_t cpusetsize, const cpuset_t *cpusetp)
45 {
46 struct pthread *curthread = _get_curthread();
47 lwpid_t tid;
48 int error;
49
50 if (td == curthread) {
51 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
52 -1, cpusetsize, cpusetp);
53 if (error == -1)
54 error = errno;
55 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) {
56 tid = TID(td);
57 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
58 cpusetsize, cpusetp);
59 if (error == -1)
60 error = errno;
61 THR_THREAD_UNLOCK(curthread, td);
62 }
63 return (error);
64 }
65
66 int
_pthread_getaffinity_np(pthread_t td,size_t cpusetsize,cpuset_t * cpusetp)67 _pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp)
68 {
69 struct pthread *curthread = _get_curthread();
70 lwpid_t tid;
71 int error;
72
73 if (td == curthread) {
74 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
75 -1, cpusetsize, cpusetp);
76 if (error == -1)
77 error = errno;
78 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) {
79 tid = TID(td);
80 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
81 cpusetsize, cpusetp);
82 if (error == -1)
83 error = errno;
84 THR_THREAD_UNLOCK(curthread, td);
85 }
86 return (error);
87 }
88