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60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* Copyright (C) 2003-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <limits.h>
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#include <pthreadP.h>
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#include <string.h>
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#include <sysdep.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <shlib-compat.h>
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int
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__pthread_getaffinity_new (pthread_t th, size_t cpusetsize, cpu_set_t *cpuset)
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{
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const struct pthread *pd = (const struct pthread *) th;
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INTERNAL_SYSCALL_DECL (err);
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int res = INTERNAL_SYSCALL (sched_getaffinity, err, 3, pd->tid,
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MIN (INT_MAX, cpusetsize), cpuset);
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if (INTERNAL_SYSCALL_ERROR_P (res, err))
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return INTERNAL_SYSCALL_ERRNO (res, err);
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/* Clean the rest of the memory the kernel didn't do. */
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memset ((char *) cpuset + res, '\0', cpusetsize - res);
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return 0;
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}
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strong_alias (__pthread_getaffinity_new, __pthread_getaffinity_np)
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versioned_symbol (libpthread, __pthread_getaffinity_new,
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pthread_getaffinity_np, GLIBC_2_3_4);
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#if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4)
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int
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__pthread_getaffinity_old (pthread_t th, cpu_set_t *cpuset)
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{
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/* The old interface by default assumed a 1024 processor bitmap. */
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return __pthread_getaffinity_new (th, 128, cpuset);
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}
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compat_symbol (libpthread, __pthread_getaffinity_old, pthread_getaffinity_np,
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GLIBC_2_3_3);
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#endif
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