--- /dev/null
+/*
+ * Copyright (c) 2015 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+extern void lockdebug_mutex_lock(mutex_tt<true> *lock);
+extern void lockdebug_mutex_try_lock(mutex_tt<true> *lock);
+extern void lockdebug_mutex_unlock(mutex_tt<true> *lock);
+extern void lockdebug_mutex_assert_locked(mutex_tt<true> *lock);
+extern void lockdebug_mutex_assert_unlocked(mutex_tt<true> *lock);
+
+static inline void lockdebug_mutex_lock(mutex_tt<false> *lock) { }
+static inline void lockdebug_mutex_try_lock(mutex_tt<false> *lock) { }
+static inline void lockdebug_mutex_unlock(mutex_tt<false> *lock) { }
+static inline void lockdebug_mutex_assert_locked(mutex_tt<false> *lock) { }
+static inline void lockdebug_mutex_assert_unlocked(mutex_tt<false> *lock) { }
+
+
+extern void lockdebug_monitor_enter(monitor_tt<true> *lock);
+extern void lockdebug_monitor_leave(monitor_tt<true> *lock);
+extern void lockdebug_monitor_wait(monitor_tt<true> *lock);
+extern void lockdebug_monitor_assert_locked(monitor_tt<true> *lock);
+extern void lockdebug_monitor_assert_unlocked(monitor_tt<true> *lock);
+
+static inline void lockdebug_monitor_enter(monitor_tt<false> *lock) { }
+static inline void lockdebug_monitor_leave(monitor_tt<false> *lock) { }
+static inline void lockdebug_monitor_wait(monitor_tt<false> *lock) { }
+static inline void lockdebug_monitor_assert_locked(monitor_tt<false> *lock) { }
+static inline void lockdebug_monitor_assert_unlocked(monitor_tt<false> *lock) {}
+
+
+extern void
+lockdebug_recursive_mutex_lock(recursive_mutex_tt<true> *lock);
+extern void
+lockdebug_recursive_mutex_unlock(recursive_mutex_tt<true> *lock);
+extern void
+lockdebug_recursive_mutex_assert_locked(recursive_mutex_tt<true> *lock);
+extern void
+lockdebug_recursive_mutex_assert_unlocked(recursive_mutex_tt<true> *lock);
+
+static inline void
+lockdebug_recursive_mutex_lock(recursive_mutex_tt<false> *lock) { }
+static inline void
+lockdebug_recursive_mutex_unlock(recursive_mutex_tt<false> *lock) { }
+static inline void
+lockdebug_recursive_mutex_assert_locked(recursive_mutex_tt<false> *lock) { }
+static inline void
+lockdebug_recursive_mutex_assert_unlocked(recursive_mutex_tt<false> *lock) { }
+
+
+extern void lockdebug_rwlock_read(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_try_read_success(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_unlock_read(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_write(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_try_write_success(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_unlock_write(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_assert_reading(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_assert_writing(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_assert_locked(rwlock_tt<true> *lock);
+extern void lockdebug_rwlock_assert_unlocked(rwlock_tt<true> *lock);
+
+static inline void lockdebug_rwlock_read(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_try_read_success(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_unlock_read(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_write(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_try_write_success(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_unlock_write(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_assert_reading(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_assert_writing(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_assert_locked(rwlock_tt<false> *) { }
+static inline void lockdebug_rwlock_assert_unlocked(rwlock_tt<false> *) { }