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bfff8b1b | 1 | /* Copyright (C) 2003-2017 Free Software Foundation, Inc. |
80f536db UD |
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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
80f536db UD |
18 | |
19 | #include <assert.h> | |
20 | #include <errno.h> | |
439ff07b | 21 | #include <limits.h> |
80f536db UD |
22 | #include <stdlib.h> |
23 | #include <string.h> | |
24 | #include <pthreadP.h> | |
439ff07b | 25 | #include <shlib-compat.h> |
80f536db UD |
26 | |
27 | ||
28 | int | |
439ff07b UD |
29 | __pthread_attr_setaffinity_new (pthread_attr_t *attr, size_t cpusetsize, |
30 | const cpu_set_t *cpuset) | |
80f536db UD |
31 | { |
32 | struct pthread_attr *iattr; | |
33 | ||
34 | assert (sizeof (*attr) >= sizeof (struct pthread_attr)); | |
35 | iattr = (struct pthread_attr *) attr; | |
36 | ||
439ff07b | 37 | if (cpuset == NULL || cpusetsize == 0) |
80f536db | 38 | { |
9ba96eda UD |
39 | free (iattr->cpuset); |
40 | iattr->cpuset = NULL; | |
439ff07b | 41 | iattr->cpusetsize = 0; |
80f536db | 42 | } |
9ba96eda UD |
43 | else |
44 | { | |
439ff07b | 45 | if (iattr->cpusetsize != cpusetsize) |
9ba96eda | 46 | { |
439ff07b UD |
47 | void *newp = (cpu_set_t *) realloc (iattr->cpuset, cpusetsize); |
48 | if (newp == NULL) | |
9ba96eda | 49 | return ENOMEM; |
439ff07b UD |
50 | |
51 | iattr->cpuset = newp; | |
52 | iattr->cpusetsize = cpusetsize; | |
9ba96eda | 53 | } |
80f536db | 54 | |
439ff07b | 55 | memcpy (iattr->cpuset, cpuset, cpusetsize); |
9ba96eda | 56 | } |
80f536db UD |
57 | |
58 | return 0; | |
59 | } | |
439ff07b UD |
60 | versioned_symbol (libpthread, __pthread_attr_setaffinity_new, |
61 | pthread_attr_setaffinity_np, GLIBC_2_3_4); | |
62 | ||
63 | ||
8e32efa6 | 64 | #if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4) |
439ff07b | 65 | int |
63f78a3a | 66 | __pthread_attr_setaffinity_old (pthread_attr_t *attr, cpu_set_t *cpuset) |
439ff07b UD |
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 |