1/* PowerPC internal rwlock struct definitions.
 2   Copyright (C) 2019-2025 Free Software Foundation, Inc.
 3
 4   This file is part of the GNU C Library.
 5
 6   The GNU C Library is free software; you can redistribute it and/or
 7   modify it under the terms of the GNU Lesser General Public
 8   License as published by the Free Software Foundation; either
 9   version 2.1 of the License, or (at your option) any later version.
10
11   The GNU C Library is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   Lesser General Public License for more details.
15
16   You should have received a copy of the GNU Lesser General Public
17   License along with the GNU C Library; if not, see
18   <http://www.gnu.org/licenses/>.  */
19
20#ifndef _RWLOCK_INTERNAL_H
21#define _RWLOCK_INTERNAL_H
22
23struct __pthread_rwlock_arch_t
24{
25  unsigned int __readers;
26  unsigned int __writers;
27  unsigned int __wrphase_futex;
28  unsigned int __writers_futex;
29  unsigned int __pad3;
30  unsigned int __pad4;
31#if __WORDSIZE == 64
32  int __cur_writer;
33  int __shared;
34  unsigned char __rwelision;
35  unsigned char __pad1[7];
36  unsigned long int __pad2;
37  /* FLAGS must stay at this position in the structure to maintain
38     binary compatibility.  */
39  unsigned int __flags;
40# define __PTHREAD_RWLOCK_ELISION_EXTRA 0, {0, 0, 0, 0, 0, 0, 0 }
41#else
42  unsigned char __rwelision;
43  unsigned char __pad2;
44  unsigned char __shared;
45  /* FLAGS must stay at this position in the structure to maintain
46     binary compatibility.  */
47  unsigned char __flags;
48  int __cur_writer;
49# define __PTHREAD_RWLOCK_ELISION_EXTRA 0
50#endif
51};
52
53#if __WORDSIZE == 64
54# define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
55  0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, __flags
56#else
57# define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
58  0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, 0, __flags, 0
59#endif
60
61#endif