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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___CHRONO_FILE_CLOCK_H11#define _LIBCPP___CHRONO_FILE_CLOCK_H12 13#include <__chrono/duration.h>14#include <__chrono/system_clock.h>15#include <__chrono/time_point.h>16#include <__config>17#include <ratio>18 19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)20# pragma GCC system_header21#endif22 23#ifndef _LIBCPP_CXX03_LANG24_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM25struct _FilesystemClock;26_LIBCPP_END_NAMESPACE_FILESYSTEM27#endif // !_LIBCPP_CXX03_LANG28 29#if _LIBCPP_STD_VER >= 2030 31_LIBCPP_BEGIN_NAMESPACE_STD32 33namespace chrono {34 35// [time.clock.file], type file_clock36using file_clock = filesystem::_FilesystemClock;37 38template <class _Duration>39using file_time = time_point<file_clock, _Duration>;40 41} // namespace chrono42 43_LIBCPP_END_NAMESPACE_STD44 45#endif // _LIBCPP_STD_VER >= 2046 47#ifndef _LIBCPP_CXX03_LANG48_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM49struct _FilesystemClock {50# if _LIBCPP_HAS_INT12851 typedef __int128_t rep;52 typedef nano period;53# else54 typedef long long rep;55 typedef nano period;56# endif57 58 typedef chrono::duration<rep, period> duration;59 typedef chrono::time_point<_FilesystemClock> time_point;60 61 _LIBCPP_EXPORTED_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX14 const bool is_steady = false;62 63 _LIBCPP_EXPORTED_FROM_ABI static time_point now() noexcept;64 65# if _LIBCPP_STD_VER >= 2066 template <class _Duration>67 _LIBCPP_HIDE_FROM_ABI static chrono::sys_time<_Duration> to_sys(const chrono::file_time<_Duration>& __t) {68 return chrono::sys_time<_Duration>(__t.time_since_epoch());69 }70 71 template <class _Duration>72 _LIBCPP_HIDE_FROM_ABI static chrono::file_time<_Duration> from_sys(const chrono::sys_time<_Duration>& __t) {73 return chrono::file_time<_Duration>(__t.time_since_epoch());74 }75# endif // _LIBCPP_STD_VER >= 2076};77_LIBCPP_END_NAMESPACE_FILESYSTEM78#endif // !_LIBCPP_CXX03_LANG79 80#endif // _LIBCPP___CHRONO_FILE_CLOCK_H81