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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/libcxx/include/__chrono/file_clock.h
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// -*- C++ -*-

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//===----------------------------------------------------------------------===//

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//

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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

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// See https://llvm.org/LICENSE.txt for license information.

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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

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//

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//===----------------------------------------------------------------------===//

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#ifndef _LIBCPP___CHRONO_FILE_CLOCK_H

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#define _LIBCPP___CHRONO_FILE_CLOCK_H

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#include <__chrono/duration.h>

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#include <__chrono/system_clock.h>

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#include <__chrono/time_point.h>

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#include <__config>

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#include <ratio>

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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

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#  pragma GCC system_header

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#endif

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#ifndef _LIBCPP_CXX03_LANG

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_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM

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struct _FilesystemClock;

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_LIBCPP_END_NAMESPACE_FILESYSTEM

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#endif // !_LIBCPP_CXX03_LANG

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#if _LIBCPP_STD_VER >= 20

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_LIBCPP_BEGIN_NAMESPACE_STD

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namespace chrono {

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// [time.clock.file], type file_clock

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using file_clock = filesystem::_FilesystemClock;

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template <class _Duration>

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using file_time = time_point<file_clock, _Duration>;

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} // namespace chrono

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_LIBCPP_END_NAMESPACE_STD

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#endif // _LIBCPP_STD_VER >= 20

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#ifndef _LIBCPP_CXX03_LANG

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_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM

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struct _FilesystemClock {

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#  if !defined(_LIBCPP_HAS_NO_INT128)

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  typedef __int128_t rep;

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  typedef nano period;

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#  else

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  typedef long long rep;

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  typedef nano period;

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#  endif

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  typedef chrono::duration<rep, period> duration;

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  typedef chrono::time_point<_FilesystemClock> time_point;

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  _LIBCPP_EXPORTED_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX14 const bool is_steady = false;

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  _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY _LIBCPP_EXPORTED_FROM_ABI static time_point now() noexcept;

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#  if _LIBCPP_STD_VER >= 20

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  template <class _Duration>

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  _LIBCPP_HIDE_FROM_ABI static chrono::sys_time<_Duration> to_sys(const chrono::file_time<_Duration>& __t) {

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    return chrono::sys_time<_Duration>(__t.time_since_epoch());

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  }

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  template <class _Duration>

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  _LIBCPP_HIDE_FROM_ABI static chrono::file_time<_Duration> from_sys(const chrono::sys_time<_Duration>& __t) {

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    return chrono::file_time<_Duration>(__t.time_since_epoch());

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  }

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#  endif // _LIBCPP_STD_VER >= 20

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};

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_LIBCPP_END_NAMESPACE_FILESYSTEM

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#endif // !_LIBCPP_CXX03_LANG

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#endif // _LIBCPP___CHRONO_FILE_CLOCK_H

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