1 | /* Copyright (C) 2003-2017 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 <assert.h> |
20 | #include <errno.h> |
21 | #include <limits.h> |
22 | #include <stdlib.h> |
23 | #include <string.h> |
24 | #include <pthreadP.h> |
25 | #include <shlib-compat.h> |
26 | |
27 | |
28 | int |
29 | __pthread_attr_setaffinity_new (pthread_attr_t *attr, size_t cpusetsize, |
30 | const cpu_set_t *cpuset) |
31 | { |
32 | struct pthread_attr *iattr; |
33 | |
34 | assert (sizeof (*attr) >= sizeof (struct pthread_attr)); |
35 | iattr = (struct pthread_attr *) attr; |
36 | |
37 | if (cpuset == NULL || cpusetsize == 0) |
38 | { |
39 | free (iattr->cpuset); |
40 | iattr->cpuset = NULL; |
41 | iattr->cpusetsize = 0; |
42 | } |
43 | else |
44 | { |
45 | if (iattr->cpusetsize != cpusetsize) |
46 | { |
47 | void *newp = (cpu_set_t *) realloc (iattr->cpuset, cpusetsize); |
48 | if (newp == NULL) |
49 | return ENOMEM; |
50 | |
51 | iattr->cpuset = newp; |
52 | iattr->cpusetsize = cpusetsize; |
53 | } |
54 | |
55 | memcpy (iattr->cpuset, cpuset, cpusetsize); |
56 | } |
57 | |
58 | return 0; |
59 | } |
60 | versioned_symbol (libpthread, __pthread_attr_setaffinity_new, |
61 | pthread_attr_setaffinity_np, GLIBC_2_3_4); |
62 | |
63 | |
64 | #if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4) |
65 | int |
66 | __pthread_attr_setaffinity_old (pthread_attr_t *attr, cpu_set_t *cpuset) |
67 | { |
68 | /* The old interface by default assumed a 1024 processor bitmap. */ |
69 | return __pthread_attr_setaffinity_new (attr, 128, cpuset); |
70 | } |
71 | compat_symbol (libpthread, __pthread_attr_setaffinity_old, |
72 | pthread_attr_setaffinity_np, GLIBC_2_3_3); |
73 | #endif |
74 | |