1/* Copyright (C) 2003-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <limits.h>
21#include <stdlib.h>
22#include <string.h>
23#include <pthreadP.h>
24#include <shlib-compat.h>
25
26
27int
28__pthread_attr_setaffinity_new (pthread_attr_t *attr, size_t cpusetsize,
29 const cpu_set_t *cpuset)
30{
31 struct pthread_attr *iattr;
32
33 iattr = (struct pthread_attr *) attr;
34
35 if (cpuset == NULL || cpusetsize == 0)
36 {
37 free (iattr->cpuset);
38 iattr->cpuset = NULL;
39 iattr->cpusetsize = 0;
40 }
41 else
42 {
43 if (iattr->cpusetsize != cpusetsize)
44 {
45 void *newp = (cpu_set_t *) realloc (iattr->cpuset, cpusetsize);
46 if (newp == NULL)
47 return ENOMEM;
48
49 iattr->cpuset = newp;
50 iattr->cpusetsize = cpusetsize;
51 }
52
53 memcpy (iattr->cpuset, cpuset, cpusetsize);
54 }
55
56 return 0;
57}
58versioned_symbol (libpthread, __pthread_attr_setaffinity_new,
59 pthread_attr_setaffinity_np, GLIBC_2_3_4);
60
61
62#if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4)
63int
64__pthread_attr_setaffinity_old (pthread_attr_t *attr, cpu_set_t *cpuset)
65{
66 /* The old interface by default assumed a 1024 processor bitmap. */
67 return __pthread_attr_setaffinity_new (attr, 128, cpuset);
68}
69compat_symbol (libpthread, __pthread_attr_setaffinity_old,
70 pthread_attr_setaffinity_np, GLIBC_2_3_3);
71#endif
72