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7538d46113
This introduces the function __pthread_attr_extension to allocate the extension space, which is freed by pthread_attr_destroy. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* Copyright (C) 2003-2020 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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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pthreadP.h>
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#include <shlib-compat.h>
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int
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__pthread_attr_setaffinity_np (pthread_attr_t *attr, size_t cpusetsize,
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const cpu_set_t *cpuset)
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{
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struct pthread_attr *iattr;
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iattr = (struct pthread_attr *) attr;
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if (cpuset == NULL || cpusetsize == 0)
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{
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if (iattr->extension != NULL)
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{
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free (iattr->extension->cpuset);
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iattr->extension->cpuset = NULL;
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iattr->extension->cpusetsize = 0;
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}
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}
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else
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{
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int ret = __pthread_attr_extension (iattr);
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if (ret != 0)
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return ret;
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if (iattr->extension->cpusetsize != cpusetsize)
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{
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void *newp = realloc (iattr->extension->cpuset, cpusetsize);
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if (newp == NULL)
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return ENOMEM;
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iattr->extension->cpuset = newp;
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iattr->extension->cpusetsize = cpusetsize;
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}
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memcpy (iattr->extension->cpuset, cpuset, cpusetsize);
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}
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return 0;
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}
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libc_hidden_def (__pthread_attr_setaffinity_np)
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versioned_symbol (libc, __pthread_attr_setaffinity_np,
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pthread_attr_setaffinity_np, GLIBC_2_32);
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#if SHLIB_COMPAT (libc, GLIBC_2_3_4, GLIBC_2_32)
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/* Compat symbol with the old libc version. */
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strong_alias (__pthread_attr_setaffinity_np, __pthread_attr_setaffinity_alias)
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compat_symbol (libc, __pthread_attr_setaffinity_alias,
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pthread_attr_setaffinity_np, GLIBC_2_3_4);
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#endif
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#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
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int
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__pthread_attr_setaffinity_old (pthread_attr_t *attr, 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_attr_setaffinity_np (attr, 128, cpuset);
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}
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compat_symbol (libc, __pthread_attr_setaffinity_old,
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pthread_attr_setaffinity_np, GLIBC_2_3_3);
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#endif
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