mirror of git://sourceware.org/git/glibc.git
122 lines
4.2 KiB
C++
122 lines
4.2 KiB
C++
/* libc-internal interface for mutex locks. Stub version.
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Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _BITS_LIBC_LOCK_H
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#define _BITS_LIBC_LOCK_H 1
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/* Define a lock variable NAME with storage class CLASS. The lock must be
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initialized with __libc_lock_init before it can be used (or define it
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with __libc_lock_define_initialized, below). Use `extern' for CLASS to
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declare a lock defined in another module. In public structure
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definitions you must use a pointer to the lock structure (i.e., NAME
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begins with a `*'), because its storage size will not be known outside
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of libc. */
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#define __libc_lock_define(CLASS,NAME)
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#define __libc_rwlock_define(CLASS,NAME)
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/* Define an initialized lock variable NAME with storage class CLASS. */
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#define __libc_lock_define_initialized(CLASS,NAME)
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#define __libc_rwlock_define_initialized(CLASS,NAME)
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/* Define an initialized recursive lock variable NAME with storage
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class CLASS. */
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#define __libc_lock_define_initialized_recursive(CLASS,NAME)
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/* Initialize the named lock variable, leaving it in a consistent, unlocked
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state. */
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#define __libc_lock_init(NAME)
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#define __libc_rwlock_init(NAME)
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/* Same as last but this time we initialize a recursive mutex. */
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#define __libc_lock_init_recursive(NAME)
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/* Finalize the named lock variable, which must be locked. It cannot be
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used again until __libc_lock_init is called again on it. This must be
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called on a lock variable before the containing storage is reused. */
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#define __libc_lock_fini(NAME)
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#define __libc_rwlock_fini(NAME)
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/* Finalize recursive named lock. */
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#define __libc_lock_fini_recursive(NAME)
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/* Lock the named lock variable. */
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#define __libc_lock_lock(NAME)
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#define __libc_rwlock_rdlock(NAME)
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#define __libc_rwlock_wrlock(NAME)
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/* Lock the recursive named lock variable. */
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#define __libc_lock_lock_recursive(NAME)
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/* Try to lock the named lock variable. */
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#define __libc_lock_trylock(NAME) 0
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#define __libc_rwlock_tryrdlock(NAME) 0
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#define __libc_rwlock_trywrlock(NAME) 0
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/* Try to lock the recursive named lock variable. */
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#define __libc_lock_trylock_recursive(NAME) 0
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/* Unlock the named lock variable. */
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#define __libc_lock_unlock(NAME)
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#define __libc_rwlock_unlock(NAME)
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/* Unlock the recursive named lock variable. */
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#define __libc_lock_unlock_recursive(NAME)
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/* Define once control variable. */
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#define __libc_once_define(CLASS, NAME) CLASS int NAME = 0
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/* Call handler iff the first call. */
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#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
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do { \
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if ((ONCE_CONTROL) == 0) { \
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INIT_FUNCTION (); \
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(ONCE_CONTROL) = 1; \
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} \
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} while (0)
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/* Start critical region with cleanup. */
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#define __libc_cleanup_region_start(FCT, ARG)
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/* End critical region with cleanup. */
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#define __libc_cleanup_region_end(DOIT)
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/* Sometimes we have to exit the block in the middle. */
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#define __libc_cleanup_end(DOIT)
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/* We need portable names for some of the functions. */
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#define __libc_mutex_unlock
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/* Type for key of thread specific data. */
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typedef int __libc_key_t;
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/* Create key for thread specific data. */
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#define __libc_key_create(KEY,DEST) -1
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/* Set thread-specific data associated with KEY to VAL. */
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#define __libc_setspecific(KEY,VAL) -1
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/* Get thread-specific data associated with KEY. */
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#define __libc_getspecific(KEY) 0
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#endif /* bits/libc-lock.h */
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