-/*
- * Copyright (c) 2008-2013 Apple Inc. All rights reserved.
- *
- * @APPLE_APACHE_LICENSE_HEADER_START@
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @APPLE_APACHE_LICENSE_HEADER_END@
- */
-
-#ifndef __OS_ONCE_PRIVATE__
-#define __OS_ONCE_PRIVATE__
-
-#include <Availability.h>
-#include <os/base_private.h>
-
-OS_ASSUME_NONNULL_BEGIN
-
-__BEGIN_DECLS
-
-#define OS_ONCE_SPI_VERSION 20130313
-
-OS_SWIFT_UNAVAILABLE("Swift has lazy init")
-typedef long os_once_t;
-
-__OSX_AVAILABLE_STARTING(__MAC_10_9,__IPHONE_7_0)
-OS_EXPORT OS_NONNULL1 OS_NONNULL3 OS_NOTHROW
-OS_SWIFT_UNAVAILABLE("Swift has lazy init")
-void
-_os_once(os_once_t *predicate, void *_Nullable context, os_function_t function);
-
-OS_NONNULL1 OS_NONNULL3 OS_NOTHROW
-__header_always_inline void
-os_once(os_once_t *predicate, void *_Nullable context, os_function_t function)
-{
- if (OS_EXPECT(*predicate, ~0l) != ~0l) {
- _os_once(predicate, context, function);
- OS_COMPILER_CAN_ASSUME(*predicate == ~0l);
- } else {
- os_compiler_barrier();
- }
-}
-
-/* This SPI is *strictly* for the use of pthread_once only. This is not
- * safe in general use of os_once.
- */
-__OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0)
-OS_EXPORT OS_NONNULL1 OS_NOTHROW
-OS_SWIFT_UNAVAILABLE("Swift has lazy init")
-void
-__os_once_reset(os_once_t *val);
-
-__END_DECLS
-
-OS_ASSUME_NONNULL_END
-
-#endif // __OS_ONCE_PRIVATE__