Update.
[glibc.git] / bits / stdio-lock.h
blobd7c1db01325afcb2662610e7309568241127d465
1 /* Thread package specific definitions of stream lock type. Generic version.
2 Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #ifndef _BITS_STDIO_LOCK_H
21 #define _BITS_STDIO_LOCK_H 1
23 #include <bits/libc-lock.h>
25 __libc_lock_define_recursive (typedef, _IO_lock_t)
27 /* We need recursive (counting) mutexes. */
28 #ifdef _LIBC_LOCK_RECURSIVE_INITIALIZER
29 # define _IO_lock_initializer _LIBC_LOCK_RECURSIVE_INITIALIZER
30 #elif _IO_MTSAFE_IO
31 #error libio needs recursive mutexes for _IO_MTSAFE_IO
32 #endif
34 #define _IO_lock_init(_name) __libc_lock_init_recursive (_name)
35 #define _IO_lock_fini(_name) __libc_lock_fini_recursive (_name)
36 #define _IO_lock_lock(_name) __libc_lock_lock_recursive (_name)
37 #define _IO_lock_trylock(_name) __libc_lock_trylock_recursive (_name)
38 #define _IO_lock_unlock(_name) __libc_lock_unlock_recursive (_name)
41 #define _IO_cleanup_region_start(_fct, _fp) \
42 __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp)
43 #define _IO_cleanup_region_start_noarg(_fct) \
44 __libc_cleanup_region_start (1, _fct, NULL)
45 #define _IO_cleanup_region_end(_doit) \
46 __libc_cleanup_region_end (_doit)
48 #if defined _LIBC && !defined NOT_IN_libc
49 # define _IO_acquire_lock(_fp) \
50 _IO_cleanup_region_start ((void (*) (void *)) _IO_funlockfile, (_fp)); \
51 _IO_flockfile (_fp)
53 # define _IO_release_lock(_fp) \
54 _IO_funlockfile (_fp); \
55 _IO_cleanup_region_end (0)
56 #endif
58 #endif /* bits/stdio-lock.h */