|  | //===----------------------------------------------------------------------===// | 
|  | // | 
|  | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | 
|  | // See https://llvm.org/LICENSE.txt for license information. | 
|  | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | 
|  | // | 
|  | //===----------------------------------------------------------------------===// | 
|  |  | 
|  | #ifndef _LIBCPP___PSTL_BACKEND_H | 
|  | #define _LIBCPP___PSTL_BACKEND_H | 
|  |  | 
|  | #include <__config> | 
|  | #include <__pstl/backend_fwd.h> | 
|  |  | 
|  | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | 
|  | #  pragma GCC system_header | 
|  | #endif | 
|  |  | 
|  | _LIBCPP_PUSH_MACROS | 
|  | #include <__undef_macros> | 
|  |  | 
|  | #if _LIBCPP_STD_VER >= 17 | 
|  |  | 
|  | #  if defined(_LIBCPP_PSTL_BACKEND_SERIAL) | 
|  | #    include <__pstl/backends/default.h> | 
|  | #    include <__pstl/backends/serial.h> | 
|  | #  elif defined(_LIBCPP_PSTL_BACKEND_STD_THREAD) | 
|  | #    include <__pstl/backends/default.h> | 
|  | #    include <__pstl/backends/std_thread.h> | 
|  | #  elif defined(_LIBCPP_PSTL_BACKEND_LIBDISPATCH) | 
|  | #    include <__pstl/backends/default.h> | 
|  | #    include <__pstl/backends/libdispatch.h> | 
|  | #  endif | 
|  |  | 
|  | #endif // _LIBCPP_STD_VER >= 17 | 
|  |  | 
|  | _LIBCPP_POP_MACROS | 
|  |  | 
|  | #endif // _LIBCPP___PSTL_BACKEND_H |