mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-09 23:00:07 +00:00
72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/* Copyright (C) 2002-2023 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 "pthreadP.h"
|
|
#include <string.h>
|
|
#include <pthread-offsets.h>
|
|
#include <shlib-compat.h>
|
|
|
|
static const struct pthread_rwlockattr default_rwlockattr =
|
|
{
|
|
.lockkind = PTHREAD_RWLOCK_DEFAULT_NP,
|
|
.pshared = PTHREAD_PROCESS_PRIVATE
|
|
};
|
|
|
|
|
|
/* See pthread_rwlock_common.c. */
|
|
int
|
|
___pthread_rwlock_init (pthread_rwlock_t *rwlock,
|
|
const pthread_rwlockattr_t *attr)
|
|
{
|
|
ASSERT_TYPE_SIZE (pthread_rwlock_t, __SIZEOF_PTHREAD_RWLOCK_T);
|
|
|
|
/* The __flags is the only field where its offset should be checked to
|
|
avoid ABI breakage with static initializers. */
|
|
ASSERT_PTHREAD_INTERNAL_OFFSET (pthread_rwlock_t, __data.__flags,
|
|
__PTHREAD_RWLOCK_FLAGS_OFFSET);
|
|
ASSERT_PTHREAD_INTERNAL_MEMBER_SIZE (pthread_rwlock_t, __data.__flags,
|
|
int);
|
|
|
|
const struct pthread_rwlockattr *iattr;
|
|
|
|
iattr = ((const struct pthread_rwlockattr *) attr) ?: &default_rwlockattr;
|
|
|
|
memset (rwlock, '\0', sizeof (*rwlock));
|
|
|
|
rwlock->__data.__flags = iattr->lockkind;
|
|
|
|
/* The value of __SHARED in a private rwlock must be zero. */
|
|
rwlock->__data.__shared = (iattr->pshared != PTHREAD_PROCESS_PRIVATE);
|
|
|
|
return 0;
|
|
}
|
|
versioned_symbol (libc, ___pthread_rwlock_init, pthread_rwlock_init,
|
|
GLIBC_2_34);
|
|
libc_hidden_ver (___pthread_rwlock_init, __pthread_rwlock_init)
|
|
#ifndef SHARED
|
|
strong_alias (___pthread_rwlock_init, __pthread_rwlock_init)
|
|
#endif
|
|
|
|
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1, GLIBC_2_34)
|
|
compat_symbol (libpthread, ___pthread_rwlock_init, pthread_rwlock_init,
|
|
GLIBC_2_1);
|
|
#endif
|
|
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
|
|
compat_symbol (libpthread, ___pthread_rwlock_init, __pthread_rwlock_init,
|
|
GLIBC_2_2);
|
|
#endif
|