linuxthreads/sysdeps/pthread/bits/stdio-lock.h

   1 /* Thread package specific definitions of stream lock type.
   2    Copyright (C) 1996, 1997, 1998, 2000, 2001 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <pthread.h>
  21
  22 typedef pthread_mutex_t _IO_lock_t;
  23
  24 /* We need recursive (counting) mutexes.  */
  25 #define _IO_lock_initializer PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
  26
  27
  28 #define _IO_cleanup_region_start(_fct, _fp) \
  29   { struct _pthread_cleanup_buffer _buffer;                                   \
  30     int _avail = (((_fp)->_flags & _IO_USER_LOCK) == 0                        \
  31                   && _pthread_cleanup_push_defer != NULL);                    \
  32     if (_avail) {                                                             \
  33       _pthread_cleanup_push_defer (&_buffer, (_fct), (_fp));                  \
  34     }
  35 #define _IO_cleanup_region_start_noarg(_fct) \
  36   { struct _pthread_cleanup_buffer _buffer;                                   \
  37     int _avail = _pthread_cleanup_push_defer != NULL;                         \
  38     if (_avail) {                                                             \
  39       _pthread_cleanup_push_defer (&_buffer, (_fct), NULL);                   \
  40     }
  41 #define _IO_cleanup_region_end(_doit) \
  42      __libc_cleanup_region_end (_doit)
  43 #define _IO_lock_init(_name) \
  44      __libc_lock_init_recursive (_name)
  45 #define _IO_lock_fini(_name) \
  46      __libc_lock_fini_recursive (_name)
  47 #define _IO_lock_lock(_name) \
  48      __libc_lock_lock (_name)
  49 #define _IO_lock_unlock(_name) \
  50      __libc_lock_unlock (_name)