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.
    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, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: #ifndef _BITS_STDIO_LOCK_H
   21: #define _BITS_STDIO_LOCK_H 1
   22: 
   23: #include <bits/libc-lock.h>
   24: 
   25: __libc_lock_define_recursive (typedef, _IO_lock_t)
   26: 
   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
   33: 
   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)
   39: 
   40: 
   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)
   47: 
   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)
   52: 
   53: # define _IO_release_lock(_fp) \
   54:   _IO_funlockfile (_fp);                                                      \
   55:   _IO_cleanup_region_end (0)
   56: #endif
   57: 
   58: #endif /* bits/stdio-lock.h */