mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 09:40:13 +00:00
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* x86 internal rwlock struct definitions.
|
|
Copyright (C) 2019-2020 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _RWLOCK_INTERNAL_H
|
|
#define _RWLOCK_INTERNAL_H
|
|
|
|
struct __pthread_rwlock_arch_t
|
|
{
|
|
unsigned int __readers;
|
|
unsigned int __writers;
|
|
unsigned int __wrphase_futex;
|
|
unsigned int __writers_futex;
|
|
unsigned int __pad3;
|
|
unsigned int __pad4;
|
|
#ifdef __x86_64__
|
|
int __cur_writer;
|
|
int __shared;
|
|
signed char __rwelision;
|
|
# ifdef __ILP32__
|
|
unsigned char __pad1[3];
|
|
# define __PTHREAD_RWLOCK_ELISION_EXTRA 0, { 0, 0, 0 }
|
|
# else
|
|
unsigned char __pad1[7];
|
|
# define __PTHREAD_RWLOCK_ELISION_EXTRA 0, { 0, 0, 0, 0, 0, 0, 0 }
|
|
# endif
|
|
unsigned long int __pad2;
|
|
/* FLAGS must stay at this position in the structure to maintain
|
|
binary compatibility. */
|
|
unsigned int __flags;
|
|
#else /* __x86_64__ */
|
|
/* FLAGS must stay at this position in the structure to maintain
|
|
binary compatibility. */
|
|
unsigned char __flags;
|
|
unsigned char __shared;
|
|
signed char __rwelision;
|
|
unsigned char __pad2;
|
|
int __cur_writer;
|
|
#endif
|
|
};
|
|
|
|
#ifdef __x86_64__
|
|
# define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
|
|
0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, __flags
|
|
#else
|
|
# define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
|
|
0, 0, 0, 0, 0, 0, __flags, 0, 0, 0, 0
|
|
#endif
|
|
|
|
#endif
|