| // -*- C++ -*- | 
 | //===----------------------------------------------------------------------===// | 
 | // | 
 | // 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___CHRONO_HIGH_RESOLUTION_CLOCK_H | 
 | #define _LIBCPP___CHRONO_HIGH_RESOLUTION_CLOCK_H | 
 |  | 
 | #include <__chrono/steady_clock.h> | 
 | #include <__chrono/system_clock.h> | 
 | #include <__config> | 
 |  | 
 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | 
 | #  pragma GCC system_header | 
 | #endif | 
 |  | 
 | _LIBCPP_BEGIN_NAMESPACE_STD | 
 |  | 
 | namespace chrono { | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK | 
 | typedef steady_clock high_resolution_clock; | 
 | #else | 
 | typedef system_clock high_resolution_clock; | 
 | #endif | 
 |  | 
 | } // namespace chrono | 
 |  | 
 | _LIBCPP_END_NAMESPACE_STD | 
 |  | 
 | #endif // _LIBCPP___CHRONO_HIGH_RESOLUTION_CLOCK_H |