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2b778ceb | 1 | /* Copyright (C) 2003-2021 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 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
80f536db | 18 | |
80f536db | 19 | #include <errno.h> |
439ff07b | 20 | #include <limits.h> |
80f536db UD |
21 | #include <stdlib.h> |
22 | #include <string.h> | |
23 | #include <pthreadP.h> | |
439ff07b | 24 | #include <shlib-compat.h> |
80f536db UD |
25 | |
26 | ||
27 | int | |
1979819d FW |
28 | __pthread_attr_setaffinity_np (pthread_attr_t *attr, size_t cpusetsize, |
29 | const cpu_set_t *cpuset) | |
80f536db UD |
30 | { |
31 | struct pthread_attr *iattr; | |
32 | ||
80f536db UD |
33 | iattr = (struct pthread_attr *) attr; |
34 | ||
439ff07b | 35 | if (cpuset == NULL || cpusetsize == 0) |
80f536db | 36 | { |
7538d461 FW |
37 | if (iattr->extension != NULL) |
38 | { | |
39 | free (iattr->extension->cpuset); | |
40 | iattr->extension->cpuset = NULL; | |
41 | iattr->extension->cpusetsize = 0; | |
42 | } | |
80f536db | 43 | } |
9ba96eda UD |
44 | else |
45 | { | |
7538d461 FW |
46 | int ret = __pthread_attr_extension (iattr); |
47 | if (ret != 0) | |
48 | return ret; | |
49 | ||
50 | if (iattr->extension->cpusetsize != cpusetsize) | |
9ba96eda | 51 | { |
7538d461 | 52 | void *newp = realloc (iattr->extension->cpuset, cpusetsize); |
439ff07b | 53 | if (newp == NULL) |
9ba96eda | 54 | return ENOMEM; |
439ff07b | 55 | |
7538d461 FW |
56 | iattr->extension->cpuset = newp; |
57 | iattr->extension->cpusetsize = cpusetsize; | |
9ba96eda | 58 | } |
80f536db | 59 | |
7538d461 | 60 | memcpy (iattr->extension->cpuset, cpuset, cpusetsize); |
9ba96eda | 61 | } |
80f536db UD |
62 | |
63 | return 0; | |
64 | } | |
1979819d FW |
65 | libc_hidden_def (__pthread_attr_setaffinity_np) |
66 | versioned_symbol (libc, __pthread_attr_setaffinity_np, | |
67 | pthread_attr_setaffinity_np, GLIBC_2_32); | |
439ff07b UD |
68 | |
69 | ||
1979819d FW |
70 | #if SHLIB_COMPAT (libc, GLIBC_2_3_4, GLIBC_2_32) |
71 | /* Compat symbol with the old libc version. */ | |
72 | strong_alias (__pthread_attr_setaffinity_np, __pthread_attr_setaffinity_alias) | |
73 | compat_symbol (libc, __pthread_attr_setaffinity_alias, | |
74 | pthread_attr_setaffinity_np, GLIBC_2_3_4); | |
75 | #endif | |
76 | ||
77 | #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) | |
439ff07b | 78 | int |
63f78a3a | 79 | __pthread_attr_setaffinity_old (pthread_attr_t *attr, cpu_set_t *cpuset) |
439ff07b UD |
80 | { |
81 | /* The old interface by default assumed a 1024 processor bitmap. */ | |
1979819d | 82 | return __pthread_attr_setaffinity_np (attr, 128, cpuset); |
439ff07b | 83 | } |
1979819d | 84 | compat_symbol (libc, __pthread_attr_setaffinity_old, |
439ff07b UD |
85 | pthread_attr_setaffinity_np, GLIBC_2_3_3); |
86 | #endif |