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/* libc-internal interface for mutex locks. Stub version.
Copyright (C) 1996, 1997, 1999 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _BITS_LIBC_LOCK_H
#define _BITS_LIBC_LOCK_H 1
/* Define a lock variable NAME with storage class CLASS. The lock must be
initialized with __libc_lock_init before it can be used (or define it
with __libc_lock_define_initialized, below). Use `extern' for CLASS to
declare a lock defined in another module. In public structure
definitions you must use a pointer to the lock structure (i.e., NAME
begins with a `*'), because its storage size will not be known outside
of libc. */
#define __libc_lock_define(CLASS,NAME)
/* Define an initialized lock variable NAME with storage class CLASS. */
#define __libc_lock_define_initialized(CLASS,NAME)
/* Define an initialized recursive lock variable NAME with storage
class CLASS. */
#define __libc_lock_define_initialized_recursive(CLASS,NAME)
/* Initialize the named lock variable, leaving it in a consistent, unlocked
state. */
#define __libc_lock_init(NAME)
/* Same as last but this time we initialize a recursive mutex. */
#define __libc_lock_init_recursive(NAME)
/* Finalize the named lock variable, which must be locked. It cannot be
used again until __libc_lock_init is called again on it. This must be
called on a lock variable before the containing storage is reused. */
#define __libc_lock_fini(NAME)
/* Finalize recursive named lock. */
#define __libc_lock_fini_recursive(NAME)
/* Lock the named lock variable. */
#define __libc_lock_lock(NAME)
/* Lock the recursive named lock variable. */
#define __libc_lock_lock_recursive(NAME)
/* Try to lock the named lock variable. */
#define __libc_lock_trylock(NAME) 0
/* Try to lock the recursive named lock variable. */
#define __libc_lock_trylock_recursive(NAME) 0
/* Unlock the named lock variable. */
#define __libc_lock_unlock(NAME)
/* Unlock the recursive named lock variable. */
#define __libc_lock_unlock_recursive(NAME)
/* Define once control variable. */
#define __libc_once_define(CLASS, NAME) CLASS int NAME = 0
/* Call handler iff the first call. */
#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
do { \
if ((ONCE_CONTROL) == 0) { \
INIT_FUNCTION (); \
(ONCE_CONTROL) = 1; \
} \
} while (0)
/* Start critical region with cleanup. */
#define __libc_cleanup_region_start(FCT, ARG)
/* End critical region with cleanup. */
#define __libc_cleanup_region_end(DOIT)
/* Sometimes we have to exit the block in the middle. */
#define __libc_cleanup_end(DOIT)
/* We need portable names for some of the functions. */
#define __libc_mutex_unlock
/* Type for key of thread specific data. */
typedef int __libc_key_t;
/* Create key for thread specific data. */
#define __libc_key_create(KEY,DEST) -1
/* Set thread-specific data associated with KEY to VAL. */
#define __libc_setspecific(KEY,VAL) -1
/* Get thread-specific data associated with KEY. */
#define __libc_getspecific(KEY) 0
#endif /* bits/libc-lock.h */
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