1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 <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
43int
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
66int
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