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// -*- 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_FILE_CLOCK_H
#define _LIBCPP___CHRONO_FILE_CLOCK_H
#include <__availability>
#include <__chrono/duration.h>
#include <__chrono/system_clock.h>
#include <__chrono/time_point.h>
#include <__config>
#include <ratio>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
struct _FilesystemClock;
_LIBCPP_END_NAMESPACE_FILESYSTEM
#endif // !_LIBCPP_CXX03_LANG
#if _LIBCPP_STD_VER > 17
_LIBCPP_BEGIN_NAMESPACE_STD
namespace chrono
{
// [time.clock.file], type file_clock
using file_clock = _VSTD_FS::_FilesystemClock;
template<class _Duration>
using file_time = time_point<file_clock, _Duration>;
} // namespace chrono
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER > 17
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
struct _FilesystemClock {
#if !defined(_LIBCPP_HAS_NO_INT128)
typedef __int128_t rep;
typedef nano period;
#else
typedef long long rep;
typedef nano period;
#endif
typedef chrono::duration<rep, period> duration;
typedef chrono::time_point<_FilesystemClock> time_point;
_LIBCPP_EXPORTED_FROM_ABI
static _LIBCPP_CONSTEXPR_SINCE_CXX14 const bool is_steady = false;
_LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_FUNC_VIS static time_point now() noexcept;
#if _LIBCPP_STD_VER > 17
template <class _Duration>
_LIBCPP_HIDE_FROM_ABI
static chrono::sys_time<_Duration> to_sys(const chrono::file_time<_Duration>& __t) {
return chrono::sys_time<_Duration>(__t.time_since_epoch());
}
template <class _Duration>
_LIBCPP_HIDE_FROM_ABI
static chrono::file_time<_Duration> from_sys(const chrono::sys_time<_Duration>& __t) {
return chrono::file_time<_Duration>(__t.time_since_epoch());
}
#endif // _LIBCPP_STD_VER > 17
};
_LIBCPP_END_NAMESPACE_FILESYSTEM
#endif // !_LIBCPP_CXX03_LANG
#endif // _LIBCPP___CHRONO_FILE_CLOCK_H
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