Warning: This file is not a C or C++ file. It does not have highlighting.
| 1 | /* RISC-V internal rwlock struct definitions. |
|---|---|
| 2 | Copyright (C) 2019-2024 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 | <https://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #ifndef _RWLOCK_INTERNAL_H |
| 21 | #define _RWLOCK_INTERNAL_H |
| 22 | |
| 23 | /* There is a lot of padding in this structure. While it's not strictly |
| 24 | necessary on RISC-V, we're going to leave it in to be on the safe side in |
| 25 | case it's needed in the future. Most other architectures have the padding, |
| 26 | so this gives us the same extensibility as everyone else has. */ |
| 27 | struct __pthread_rwlock_arch_t |
| 28 | { |
| 29 | unsigned int __readers; |
| 30 | unsigned int __writers; |
| 31 | unsigned int __wrphase_futex; |
| 32 | unsigned int __writers_futex; |
| 33 | unsigned int __pad3; |
| 34 | unsigned int __pad4; |
| 35 | #if __WORDSIZE == 64 |
| 36 | int __cur_writer; |
| 37 | int __shared; |
| 38 | unsigned long int __pad1; |
| 39 | unsigned long int __pad2; |
| 40 | unsigned int __flags; |
| 41 | #else |
| 42 | # if __BYTE_ORDER == __BIG_ENDIAN |
| 43 | unsigned char __pad1; |
| 44 | unsigned char __pad2; |
| 45 | unsigned char __shared; |
| 46 | unsigned char __flags; |
| 47 | # else |
| 48 | unsigned char __flags; |
| 49 | unsigned char __shared; |
| 50 | unsigned char __pad1; |
| 51 | unsigned char __pad2; |
| 52 | # endif |
| 53 | int __cur_writer; |
| 54 | #endif |
| 55 | }; |
| 56 | |
| 57 | #if __WORDSIZE == 64 |
| 58 | # define __PTHREAD_RWLOCK_INITIALIZER(__flags) \ |
| 59 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags |
| 60 | #elif __BYTE_ORDER == __BIG_ENDIAN |
| 61 | # define __PTHREAD_RWLOCK_INITIALIZER(__flags) \ |
| 62 | 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags, 0 |
| 63 | #else |
| 64 | # define __PTHREAD_RWLOCK_INITIALIZER(__flags) \ |
| 65 | 0, 0, 0, 0, 0, 0, __flags, 0, 0, 0, 0 |
| 66 | #endif |
| 67 | |
| 68 | #endif |
| 69 |
Warning: This file is not a C or C++ file. It does not have highlighting.