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62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* Copyright (C) 2002-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sched.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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#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
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extern int __sched_getaffinity_new (pid_t, size_t, cpu_set_t *);
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libc_hidden_proto (__sched_getaffinity_new)
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#endif
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int
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__sched_getaffinity_new (pid_t pid, size_t cpusetsize, cpu_set_t *cpuset)
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{
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int res = INLINE_SYSCALL (sched_getaffinity, 3, pid,
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MIN (INT_MAX, cpusetsize), cpuset);
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if (res != -1)
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{
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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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res = 0;
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}
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return res;
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}
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versioned_symbol (libc, __sched_getaffinity_new, sched_getaffinity,
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GLIBC_2_3_4);
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#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
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libc_hidden_def (__sched_getaffinity_new)
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int
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attribute_compat_text_section
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__sched_getaffinity_old (pid_t pid, 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 __sched_getaffinity_new (pid, 128, cpuset);
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}
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compat_symbol (libc, __sched_getaffinity_old, sched_getaffinity, GLIBC_2_3_3);
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#endif
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