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/* Copyright (C) 2003-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <pthreadP.h>
#include <shlib-compat.h>
int
__pthread_attr_setaffinity_np (pthread_attr_t *attr, size_t cpusetsize,
const cpu_set_t *cpuset)
{
struct pthread_attr *iattr;
iattr = (struct pthread_attr *) attr;
if (cpuset == NULL || cpusetsize == 0)
{
if (iattr->extension != NULL)
{
free (iattr->extension->cpuset);
iattr->extension->cpuset = NULL;
iattr->extension->cpusetsize = 0;
}
}
else
{
int ret = __pthread_attr_extension (iattr);
if (ret != 0)
return ret;
if (iattr->extension->cpusetsize != cpusetsize)
{
void *newp = realloc (iattr->extension->cpuset, cpusetsize);
if (newp == NULL)
return ENOMEM;
iattr->extension->cpuset = newp;
iattr->extension->cpusetsize = cpusetsize;
}
memcpy (iattr->extension->cpuset, cpuset, cpusetsize);
}
return 0;
}
libc_hidden_def (__pthread_attr_setaffinity_np)
versioned_symbol (libc, __pthread_attr_setaffinity_np,
pthread_attr_setaffinity_np, GLIBC_2_32);
#if SHLIB_COMPAT (libc, GLIBC_2_3_4, GLIBC_2_32)
/* Compat symbol with the old libc version. */
strong_alias (__pthread_attr_setaffinity_np, __pthread_attr_setaffinity_alias)
compat_symbol (libc, __pthread_attr_setaffinity_alias,
pthread_attr_setaffinity_np, GLIBC_2_3_4);
#endif
#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
int
__pthread_attr_setaffinity_old (pthread_attr_t *attr, cpu_set_t *cpuset)
{
/* The old interface by default assumed a 1024 processor bitmap. */
return __pthread_attr_setaffinity_np (attr, 128, cpuset);
}
compat_symbol (libc, __pthread_attr_setaffinity_old,
pthread_attr_setaffinity_np, GLIBC_2_3_3);
#endif
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