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04277e02 | 1 | /* Copyright (C) 2003-2019 Free Software Foundation, Inc. |
949ec764 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/>. */ |
949ec764 UD |
18 | |
19 | #include <errno.h> | |
439ff07b | 20 | #include <limits.h> |
949ec764 UD |
21 | #include <pthreadP.h> |
22 | #include <string.h> | |
23 | #include <sysdep.h> | |
439ff07b | 24 | #include <sys/param.h> |
949ec764 | 25 | #include <sys/types.h> |
439ff07b | 26 | #include <shlib-compat.h> |
949ec764 UD |
27 | |
28 | ||
29 | int | |
439ff07b | 30 | __pthread_getaffinity_new (pthread_t th, size_t cpusetsize, cpu_set_t *cpuset) |
949ec764 | 31 | { |
439ff07b UD |
32 | const struct pthread *pd = (const struct pthread *) th; |
33 | ||
949ec764 UD |
34 | INTERNAL_SYSCALL_DECL (err); |
35 | int res = INTERNAL_SYSCALL (sched_getaffinity, err, 3, pd->tid, | |
97087800 | 36 | MIN (INT_MAX, cpusetsize), cpuset); |
949ec764 UD |
37 | if (INTERNAL_SYSCALL_ERROR_P (res, err)) |
38 | return INTERNAL_SYSCALL_ERRNO (res, err); | |
39 | ||
40 | /* Clean the rest of the memory the kernel didn't do. */ | |
439ff07b | 41 | memset ((char *) cpuset + res, '\0', cpusetsize - res); |
949ec764 UD |
42 | |
43 | return 0; | |
44 | } | |
439ff07b UD |
45 | strong_alias (__pthread_getaffinity_new, __pthread_getaffinity_np) |
46 | versioned_symbol (libpthread, __pthread_getaffinity_new, | |
47 | pthread_getaffinity_np, GLIBC_2_3_4); | |
48 | ||
49 | ||
8e32efa6 | 50 | #if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4) |
439ff07b | 51 | int |
e3d4c585 | 52 | __pthread_getaffinity_old (pthread_t th, cpu_set_t *cpuset) |
439ff07b UD |
53 | { |
54 | /* The old interface by default assumed a 1024 processor bitmap. */ | |
e3d4c585 | 55 | return __pthread_getaffinity_new (th, 128, cpuset); |
439ff07b UD |
56 | } |
57 | compat_symbol (libpthread, __pthread_getaffinity_old, pthread_getaffinity_np, | |
58 | GLIBC_2_3_3); | |
59 | #endif |