diff options
Diffstat (limited to 'sysdeps/generic/stdio-lock.h')
| -rw-r--r-- | sysdeps/generic/stdio-lock.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/generic/stdio-lock.h b/sysdeps/generic/stdio-lock.h new file mode 100644 index 0000000000..620e207f80 --- /dev/null +++ b/sysdeps/generic/stdio-lock.h @@ -0,0 +1,57 @@ +/* Thread package specific definitions of stream lock type. Generic version. + Copyright (C) 2000-2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _STDIO_LOCK_H +#define _STDIO_LOCK_H 1 + +#include <bits/libc-lock.h> + +__libc_lock_define_recursive (typedef, _IO_lock_t) + +/* We need recursive (counting) mutexes. */ +#ifdef _LIBC_LOCK_RECURSIVE_INITIALIZER +# define _IO_lock_initializer _LIBC_LOCK_RECURSIVE_INITIALIZER +#elif _IO_MTSAFE_IO + #error libio needs recursive mutexes for _IO_MTSAFE_IO +#endif + +#define _IO_lock_init(_name) __libc_lock_init_recursive (_name) +#define _IO_lock_fini(_name) __libc_lock_fini_recursive (_name) +#define _IO_lock_lock(_name) __libc_lock_lock_recursive (_name) +#define _IO_lock_trylock(_name) __libc_lock_trylock_recursive (_name) +#define _IO_lock_unlock(_name) __libc_lock_unlock_recursive (_name) + + +#define _IO_cleanup_region_start(_fct, _fp) \ + __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp) +#define _IO_cleanup_region_start_noarg(_fct) \ + __libc_cleanup_region_start (1, _fct, NULL) +#define _IO_cleanup_region_end(_doit) \ + __libc_cleanup_region_end (_doit) + +#if defined _LIBC && IS_IN (libc) +# define _IO_acquire_lock(_fp) \ + _IO_cleanup_region_start ((void (*) (void *)) _IO_funlockfile, (_fp)); \ + _IO_flockfile (_fp) + +# define _IO_release_lock(_fp) \ + _IO_funlockfile (_fp); \ + _IO_cleanup_region_end (0) +#endif + +#endif /* stdio-lock.h */ |