akaros/tools/compilers/gcc-glibc/glibc-2.19-akaros/sysdeps/akaros/bits/stdio-lock.h
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   1/* Thread package specific definitions of stream lock type.  NPTL version.
   2   Copyright (C) 2000-2014 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, see
  17   <http://www.gnu.org/licenses/>.  */
  18
  19#ifndef _BITS_STDIO_LOCK_H
  20#define _BITS_STDIO_LOCK_H 1
  21
  22/* AKAROS: upper half from bits/stdio-lock.h */
  23
  24#include <bits/libc-lock.h>
  25
  26__libc_lock_define_recursive (typedef, _IO_lock_t)
  27
  28/* We need recursive (counting) mutexes.  */
  29#ifdef _LIBC_LOCK_RECURSIVE_INITIALIZER
  30# define _IO_lock_initializer _LIBC_LOCK_RECURSIVE_INITIALIZER
  31#elif _IO_MTSAFE_IO
  32 #error libio needs recursive mutexes for _IO_MTSAFE_IO
  33#endif
  34
  35#define _IO_lock_init(_name)    __libc_lock_init_recursive (_name)
  36#define _IO_lock_fini(_name)    __libc_lock_fini_recursive (_name)
  37#define _IO_lock_lock(_name)    __libc_lock_lock_recursive (_name)
  38#define _IO_lock_trylock(_name) __libc_lock_trylock_recursive (_name)
  39#define _IO_lock_unlock(_name)  __libc_lock_unlock_recursive (_name)
  40
  41
  42#define _IO_cleanup_region_start(_fct, _fp) \
  43  __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp)
  44#define _IO_cleanup_region_start_noarg(_fct) \
  45  __libc_cleanup_region_start (1, _fct, NULL)
  46#define _IO_cleanup_region_end(_doit) \
  47  __libc_cleanup_region_end (_doit)
  48
  49
  50/* AKAROS: lower half from nptl/sysdeps/pthreads/bits/stdio-lock.h.  Not sure if
  51 * this is critical or not.  won't build with the standard bits/stdio-lock.h. */
  52
  53
  54#if defined _LIBC && !defined NOT_IN_libc
  55
  56# ifdef __EXCEPTIONS
  57#  define _IO_acquire_lock(_fp) \
  58  do {                                                                        \
  59    _IO_FILE *_IO_acquire_lock_file                                           \
  60        __attribute__((cleanup (_IO_acquire_lock_fct)))                       \
  61        = (_fp);                                                              \
  62    _IO_flockfile (_IO_acquire_lock_file);
  63#  define _IO_acquire_lock_clear_flags2(_fp) \
  64  do {                                                                        \
  65    _IO_FILE *_IO_acquire_lock_file                                           \
  66        __attribute__((cleanup (_IO_acquire_lock_clear_flags2_fct)))          \
  67        = (_fp);                                                              \
  68    _IO_flockfile (_IO_acquire_lock_file);
  69# else
  70#  define _IO_acquire_lock(_fp) _IO_acquire_lock_needs_exceptions_enabled
  71#  define _IO_acquire_lock_clear_flags2(_fp) _IO_acquire_lock (_fp)
  72# endif
  73# define _IO_release_lock(_fp) ; } while (0)
  74
  75#endif
  76
  77#endif /* bits/stdio-lock.h */
  78