1 /* S390 internal rwlock struct definitions.
2 Copyright (C) 2019-2024 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
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.
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.
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/>. */
20 #ifndef _RWLOCK_INTERNAL_H
21 #define _RWLOCK_INTERNAL_H
23 struct __pthread_rwlock_arch_t
25 unsigned int __readers
;
26 unsigned int __writers
;
27 unsigned int __wrphase_futex
;
28 unsigned int __writers_futex
;
34 unsigned long int __pad1
;
35 unsigned long int __pad2
;
36 /* FLAGS must stay at this position in the structure to maintain
37 binary compatibility. */
42 unsigned char __shared
;
43 /* FLAGS must stay at this position in the structure to maintain
44 binary compatibility. */
45 unsigned char __flags
;
51 # define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
52 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags
54 # define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
55 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags, 0