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
40int
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
63int
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