1 /*
2 * Copyright (c) 2008, David Xu <davidxu@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 *
28 */
29
30 #include "namespace.h"
31 #include <pthread_np.h>
32 #include <sys/param.h>
33 #include <sys/cpuset.h>
34 #include "un-namespace.h"
35
36 #include "thr_private.h"
37
38 __weak_reference(_pthread_getaffinity_np, pthread_getaffinity_np);
39 __weak_reference(_pthread_setaffinity_np, pthread_setaffinity_np);
40
41 int
_pthread_setaffinity_np(pthread_t td,size_t cpusetsize,const cpuset_t * cpusetp)42 _pthread_setaffinity_np(pthread_t td, size_t cpusetsize, const cpuset_t *cpusetp)
43 {
44 struct pthread *curthread = _get_curthread();
45 lwpid_t tid;
46 int error;
47
48 if (td == curthread) {
49 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
50 -1, cpusetsize, cpusetp);
51 if (error == -1)
52 error = errno;
53 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) {
54 tid = TID(td);
55 error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
56 cpusetsize, cpusetp);
57 if (error == -1)
58 error = errno;
59 THR_THREAD_UNLOCK(curthread, td);
60 }
61 return (error);
62 }
63
64 int
_pthread_getaffinity_np(pthread_t td,size_t cpusetsize,cpuset_t * cpusetp)65 _pthread_getaffinity_np(pthread_t td, size_t cpusetsize, cpuset_t *cpusetp)
66 {
67 struct pthread *curthread = _get_curthread();
68 lwpid_t tid;
69 int error;
70
71 if (td == curthread) {
72 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID,
73 -1, cpusetsize, cpusetp);
74 if (error == -1)
75 error = errno;
76 } else if ((error = _thr_find_thread(curthread, td, 0)) == 0) {
77 tid = TID(td);
78 error = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
79 cpusetsize, cpusetp);
80 if (error == -1)
81 error = errno;
82 THR_THREAD_UNLOCK(curthread, td);
83 }
84 return (error);
85 }
86