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+/* libc-internal interface for mutex locks. Stub version.
+ Copyright (C) 1996-2015 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _LIBC_LOCK_H
+#define _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 __libc_lock_define_recursive(CLASS,NAME)
+#define __rtld_lock_define_recursive(CLASS,NAME)
+#define __libc_rwlock_define(CLASS,NAME)
+
+/* Define an initialized lock variable NAME with storage class CLASS. */
+#define __libc_lock_define_initialized(CLASS,NAME)
+#define __libc_rwlock_define_initialized(CLASS,NAME)
+
+/* Define an initialized recursive lock variable NAME with storage
+ class CLASS. */
+#define __libc_lock_define_initialized_recursive(CLASS,NAME)
+#define __rtld_lock_define_initialized_recursive(CLASS,NAME)
+
+/* Initialize the named lock variable, leaving it in a consistent, unlocked
+ state. */
+#define __libc_lock_init(NAME)
+#define __rtld_lock_initialize(NAME)
+#define __libc_rwlock_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)
+#define __libc_rwlock_fini(NAME)
+
+/* Finalize recursive named lock. */
+#define __libc_lock_fini_recursive(NAME)
+
+/* Lock the named lock variable. */
+#define __libc_lock_lock(NAME)
+#define __libc_rwlock_rdlock(NAME)
+#define __libc_rwlock_wrlock(NAME)
+
+/* Lock the recursive named lock variable. */
+#define __libc_lock_lock_recursive(NAME)
+#define __rtld_lock_lock_recursive(NAME)
+
+/* Try to lock the named lock variable. */
+#define __libc_lock_trylock(NAME) 0
+#define __libc_rwlock_tryrdlock(NAME) 0
+#define __libc_rwlock_trywrlock(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)
+#define __libc_rwlock_unlock(NAME)
+
+/* Unlock the recursive named lock variable. */
+#define __libc_lock_unlock_recursive(NAME)
+#define __rtld_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)
+
+/* Get once control variable. */
+#define __libc_once_get(ONCE_CONTROL) \
+ ((ONCE_CONTROL) == 1)
+
+/* Start a critical region with a cleanup function */
+#define __libc_cleanup_region_start(DOIT, FCT, ARG) \
+{ \
+ typeof (***(FCT)) *__save_FCT = (DOIT) ? (FCT) : 0; \
+ typeof (ARG) __save_ARG = ARG; \
+ /* close brace is in __libc_cleanup_region_end below. */
+
+/* End a critical region started with __libc_cleanup_region_start. */
+#define __libc_cleanup_region_end(DOIT) \
+ if ((DOIT) && __save_FCT != 0) \
+ (*__save_FCT)(__save_ARG); \
+}
+
+/* Sometimes we have to exit the block in the middle. */
+#define __libc_cleanup_end(DOIT) \
+ if ((DOIT) && __save_FCT != 0) \
+ (*__save_FCT)(__save_ARG); \
+
+#define __libc_cleanup_push(fct, arg) __libc_cleanup_region_start (1, fct, arg)
+#define __libc_cleanup_pop(execute) __libc_cleanup_region_end (execute)
+
+/* 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) ((void) (KEY), (void) (DEST), -1)
+
+/* Set thread-specific data associated with KEY to VAL. */
+#define __libc_setspecific(KEY,VAL) ((void) (KEY), (void) (VAL))
+
+/* Get thread-specific data associated with KEY. */
+#define __libc_getspecific(KEY) ((void) (KEY), (void *) 0)
+
+#endif /* libc-lock.h */