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/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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 <string.h>
#include <unistd.h>
#include "pthreadP.h"
#include <shlib-compat.h>
struct pthread_attr *__attr_list;
int __attr_list_lock = LLL_LOCK_INITIALIZER;
int
__pthread_attr_init (pthread_attr_t *attr)
{
struct pthread_attr *iattr;
ASSERT_TYPE_SIZE (pthread_attr_t, __SIZEOF_PTHREAD_ATTR_T);
ASSERT_PTHREAD_INTERNAL_SIZE (pthread_attr_t, struct pthread_attr);
/* Many elements are initialized to zero so let us do it all at
once. This also takes care of clearing the bytes which are not
internally used. */
memset (attr, '\0', __SIZEOF_PTHREAD_ATTR_T);
iattr = (struct pthread_attr *) attr;
/* Default guard size specified by the standard. */
iattr->guardsize = __getpagesize ();
return 0;
}
libc_hidden_def (__pthread_attr_init)
versioned_symbol (libc, __pthread_attr_init, pthread_attr_init, GLIBC_2_1);
#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1)
int
__pthread_attr_init_2_0 (pthread_attr_t *attr)
{
/* This code is specific to the old LinuxThread code which has a too
small pthread_attr_t definition. The struct looked like
this: */
struct old_attr
{
int detachstate;
int schedpolicy;
struct sched_param schedparam;
int inheritsched;
int scope;
};
struct pthread_attr *iattr;
/* Many elements are initialized to zero so let us do it all at
once. This also takes care of clearing the bytes which are not
internally used. */
memset (attr, '\0', sizeof (struct old_attr));
iattr = (struct pthread_attr *) attr;
iattr->flags |= ATTR_FLAG_OLDATTR;
/* We cannot enqueue the attribute because that member is not in the
old attribute structure. */
return 0;
}
compat_symbol (libc, __pthread_attr_init_2_0, pthread_attr_init, GLIBC_2_0);
#endif
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