/* Thread package specific definitions of stream lock type.  NPTL version.   Copyright (C) 2000, 2001, 2002, 2003 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, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */#ifndef _BITS_STDIO_LOCK_H#define _BITS_STDIO_LOCK_H 1#include <bits/libc-lock.h>#include <lowlevellock.h>/* The locking here is very inexpensive, even for inlining.  */#define _IO_lock_inexpensive	1typedef struct { int lock; int cnt; void *owner; } _IO_lock_t;#define _IO_lock_initializer { LLL_LOCK_INITIALIZER, 0, NULL }#define _IO_lock_init(_name) \  ((_name) = (_IO_lock_t) _IO_lock_initializer , 0)#define _IO_lock_fini(_name) \  ((void) 0)#define _IO_lock_lock(_name) \  do {									      \    void *__self = THREAD_SELF;						      \    if ((_name).owner != __self)					      \      {									      \        lll_lock ((_name).lock);					      \        (_name).owner = __self;						      \      }									      \    ++(_name).cnt;							      \  } while (0)#define _IO_lock_trylock(_name) \  ({									      \    int __result = 0;							      \    void *__self = THREAD_SELF;						      \    if ((_name).owner != __self)					      \      {									      \        if (lll_trylock ((_name).lock) == 0)				      \          {								      \            (_name).owner = __self;					      \            (_name).cnt = 1;						      \          }								      \        else								      \          __result = EBUSY;						      \      }									      \    else								      \      ++(_name).cnt;							      \    __result;								      \  })#define _IO_lock_unlock(_name) \  do {									      \    if (--(_name).cnt == 0)						      \      {									      \        (_name).owner = NULL;						      \        lll_unlock ((_name).lock);					      \      }									      \  } while (0)#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 && !defined NOT_IN_libc# ifdef __EXCEPTIONS#  define _IO_acquire_lock(_fp) \  do {									      \    _IO_FILE *_IO_acquire_lock_file					      \	__attribute__((cleanup (_IO_acquire_lock_fct)))			      \	= (_fp);							      \    _IO_flockfile (_IO_acquire_lock_file);# else#  define _IO_acquire_lock(_fp) _IO_acquire_lock_needs_exceptions_enabled# endif# define _IO_release_lock(_fp) ; } while (0)#endif#endif /* bits/stdio-lock.h */