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76fe4ef4 1/* Thread package specific definitions of stream lock type. Hurd version.
6d7e8eda 2 Copyright (C) 2000-2023 Free Software Foundation, Inc.
76fe4ef4
ST
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 <https://www.gnu.org/licenses/>. */
18
19#ifndef _STDIO_LOCK_H
20#define _STDIO_LOCK_H 1
21
22#include <libc-lock.h>
23
24__libc_lock_define_recursive (typedef, _IO_lock_t)
25#define _IO_lock_t_defined 1
26
27/* We need recursive (counting) mutexes. */
28# define _IO_lock_initializer _LIBC_LOCK_RECURSIVE_INITIALIZER
29
30#define _IO_lock_init(_name) __libc_lock_init_recursive (_name)
31#define _IO_lock_fini(_name) __libc_lock_fini_recursive (_name)
32#define _IO_lock_lock(_name) __libc_lock_lock_recursive (_name)
33#define _IO_lock_trylock(_name) __libc_lock_trylock_recursive (_name)
34#define _IO_lock_unlock(_name) __libc_lock_unlock_recursive (_name)
35
36
37#define _IO_cleanup_region_start(_fct, _fp) \
38 __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp)
39#define _IO_cleanup_region_start_noarg(_fct) \
40 __libc_cleanup_region_start (1, _fct, NULL)
41#define _IO_cleanup_region_end(_doit) \
42 __libc_cleanup_region_end (_doit)
43
44#if defined _LIBC && IS_IN (libc)
45
46# define _IO_acquire_lock(_fp) \
47 do { \
48 _IO_cleanup_region_start((void (*) (void *)) &_IO_funlockfile, _fp); \
49 _IO_flockfile (_fp);
50# define _IO_release_lock(_fp) \
51 _IO_funlockfile (_fp); \
52 _IO_cleanup_region_end (0); \
53 } while (0)
54
55#endif
56
57#endif /* stdio-lock.h */