| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Thread package specific definitions of stream lock type. Generic version. |
| 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _BITS_STDIO_LOCK_H |
| 20 | #define _BITS_STDIO_LOCK_H 1 |
| 21 | |
| 22 | #include <bits/libc-lock.h> |
| 23 | |
| 24 | __libc_lock_define_recursive (typedef, _IO_lock_t) |
| 25 | |
| 26 | /* We need recursive (counting) mutexes. */ |
| 27 | #ifdef _LIBC_LOCK_RECURSIVE_INITIALIZER |
| 28 | # define _IO_lock_initializer _LIBC_LOCK_RECURSIVE_INITIALIZER |
| 29 | #elif _IO_MTSAFE_IO |
| 30 | #error libio needs recursive mutexes for _IO_MTSAFE_IO |
| 31 | #endif |
| 32 | |
| 33 | #define _IO_lock_init(_name) __libc_lock_init_recursive (_name) |
| 34 | #define _IO_lock_fini(_name) __libc_lock_fini_recursive (_name) |
| 35 | #define _IO_lock_lock(_name) __libc_lock_lock_recursive (_name) |
| 36 | #define _IO_lock_trylock(_name) __libc_lock_trylock_recursive (_name) |
| 37 | #define _IO_lock_unlock(_name) __libc_lock_unlock_recursive (_name) |
| 38 | |
| 39 | |
| 40 | #define _IO_cleanup_region_start(_fct, _fp) \ |
| 41 | __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp) |
| 42 | #define _IO_cleanup_region_start_noarg(_fct) \ |
| 43 | __libc_cleanup_region_start (1, _fct, NULL) |
| 44 | #define _IO_cleanup_region_end(_doit) \ |
| 45 | __libc_cleanup_region_end (_doit) |
| 46 | |
| 47 | #if defined _LIBC && IS_IN (libc) |
| 48 | # define _IO_acquire_lock(_fp) \ |
| 49 | _IO_cleanup_region_start ((void (*) (void *)) _IO_funlockfile, (_fp)); \ |
| 50 | _IO_flockfile (_fp) |
| 51 | |
| 52 | # define _IO_release_lock(_fp) \ |
| 53 | _IO_funlockfile (_fp); \ |
| 54 | _IO_cleanup_region_end (0) |
| 55 | #endif |
| 56 | |
| 57 | #endif /* bits/stdio-lock.h */ |