glibc/nptl/pthread_attr_destroy.c
Florian Weimer 7538d46113 nptl: Make pthread_attr_t dynamically extensible
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>
2020-06-02 11:54:58 +02:00

48 lines
1.5 KiB
C

/* 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>
int
__pthread_attr_destroy (pthread_attr_t *attr)
{
struct pthread_attr *iattr;
iattr = (struct pthread_attr *) attr;
#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_1)
/* In old struct pthread_attr, the extension member is missing. */
if (__builtin_expect ((iattr->flags & ATTR_FLAG_OLDATTR), 0) == 0)
#endif
{
if (iattr->extension != NULL)
{
free (iattr->extension->cpuset);
free (iattr->extension);
}
}
return 0;
}
libc_hidden_def (__pthread_attr_destroy)
weak_alias (__pthread_attr_destroy, pthread_attr_destroy)