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220 lines
8.3 KiB
C++
220 lines
8.3 KiB
C++
// -*- 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_TIME_POINT_H
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#define _LIBCPP___CHRONO_TIME_POINT_H
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#include <__chrono/duration.h>
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#include <__compare/ordering.h>
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#include <__compare/three_way_comparable.h>
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#include <__config>
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#include <__type_traits/common_type.h>
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#include <__type_traits/enable_if.h>
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#include <__type_traits/is_convertible.h>
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#include <limits>
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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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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace chrono {
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template <class _Clock, class _Duration = typename _Clock::duration>
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class _LIBCPP_TEMPLATE_VIS time_point {
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static_assert(__is_duration<_Duration>::value,
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"Second template parameter of time_point must be a std::chrono::duration");
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public:
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typedef _Clock clock;
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typedef _Duration duration;
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typedef typename duration::rep rep;
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typedef typename duration::period period;
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private:
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duration __d_;
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public:
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 time_point() : __d_(duration::zero()) {}
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit time_point(const duration& __d) : __d_(__d) {}
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// conversions
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template <class _Duration2, __enable_if_t<is_convertible<_Duration2, duration>::value, int> = 0>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 time_point(const time_point<clock, _Duration2>& __t)
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: __d_(__t.time_since_epoch()) {}
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// observer
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 duration time_since_epoch() const { return __d_; }
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// arithmetic
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 time_point& operator+=(const duration& __d) {
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__d_ += __d;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 time_point& operator-=(const duration& __d) {
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__d_ -= __d;
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return *this;
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}
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// special values
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_LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR time_point min() _NOEXCEPT { return time_point(duration::min()); }
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_LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR time_point max() _NOEXCEPT { return time_point(duration::max()); }
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};
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} // namespace chrono
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template <class _Clock, class _Duration1, class _Duration2>
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struct _LIBCPP_TEMPLATE_VIS
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common_type<chrono::time_point<_Clock, _Duration1>, chrono::time_point<_Clock, _Duration2> > {
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typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type;
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};
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namespace chrono {
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template <class _ToDuration, class _Clock, class _Duration>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 time_point<_Clock, _ToDuration>
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time_point_cast(const time_point<_Clock, _Duration>& __t) {
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return time_point<_Clock, _ToDuration>(chrono::duration_cast<_ToDuration>(__t.time_since_epoch()));
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}
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#if _LIBCPP_STD_VER >= 17
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template <class _ToDuration, class _Clock, class _Duration, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
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inline _LIBCPP_HIDE_FROM_ABI constexpr time_point<_Clock, _ToDuration> floor(const time_point<_Clock, _Duration>& __t) {
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return time_point<_Clock, _ToDuration>{chrono::floor<_ToDuration>(__t.time_since_epoch())};
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}
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template <class _ToDuration, class _Clock, class _Duration, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
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inline _LIBCPP_HIDE_FROM_ABI constexpr time_point<_Clock, _ToDuration> ceil(const time_point<_Clock, _Duration>& __t) {
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return time_point<_Clock, _ToDuration>{chrono::ceil<_ToDuration>(__t.time_since_epoch())};
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}
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template <class _ToDuration, class _Clock, class _Duration, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
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inline _LIBCPP_HIDE_FROM_ABI constexpr time_point<_Clock, _ToDuration> round(const time_point<_Clock, _Duration>& __t) {
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return time_point<_Clock, _ToDuration>{chrono::round<_ToDuration>(__t.time_since_epoch())};
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}
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template <class _Rep, class _Period, enable_if_t<numeric_limits<_Rep>::is_signed, int> = 0>
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inline _LIBCPP_HIDE_FROM_ABI constexpr duration<_Rep, _Period> abs(duration<_Rep, _Period> __d) {
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return __d >= __d.zero() ? +__d : -__d;
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}
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#endif // _LIBCPP_STD_VER >= 17
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// time_point ==
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template <class _Clock, class _Duration1, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool
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operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return __lhs.time_since_epoch() == __rhs.time_since_epoch();
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}
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#if _LIBCPP_STD_VER <= 17
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// time_point !=
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template <class _Clock, class _Duration1, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool
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operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return !(__lhs == __rhs);
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}
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#endif // _LIBCPP_STD_VER <= 17
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// time_point <
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template <class _Clock, class _Duration1, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool
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operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return __lhs.time_since_epoch() < __rhs.time_since_epoch();
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}
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// time_point >
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template <class _Clock, class _Duration1, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool
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operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return __rhs < __lhs;
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}
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// time_point <=
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template <class _Clock, class _Duration1, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool
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operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return !(__rhs < __lhs);
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}
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// time_point >=
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template <class _Clock, class _Duration1, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool
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operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return !(__lhs < __rhs);
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}
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#if _LIBCPP_STD_VER >= 20
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template <class _Clock, class _Duration1, three_way_comparable_with<_Duration1> _Duration2>
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_LIBCPP_HIDE_FROM_ABI constexpr auto
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operator<=>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return __lhs.time_since_epoch() <=> __rhs.time_since_epoch();
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}
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#endif // _LIBCPP_STD_VER >= 20
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// time_point operator+(time_point x, duration y);
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template <class _Clock, class _Duration1, class _Rep2, class _Period2>
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inline _LIBCPP_HIDE_FROM_ABI
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_LIBCPP_CONSTEXPR_SINCE_CXX14 time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
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operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
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typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr;
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return _Tr(__lhs.time_since_epoch() + __rhs);
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}
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// time_point operator+(duration x, time_point y);
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template <class _Rep1, class _Period1, class _Clock, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI
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_LIBCPP_CONSTEXPR_SINCE_CXX14 time_point<_Clock, typename common_type<duration<_Rep1, _Period1>, _Duration2>::type>
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operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return __rhs + __lhs;
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}
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// time_point operator-(time_point x, duration y);
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template <class _Clock, class _Duration1, class _Rep2, class _Period2>
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inline _LIBCPP_HIDE_FROM_ABI
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_LIBCPP_CONSTEXPR_SINCE_CXX14 time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
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operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
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typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Ret;
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return _Ret(__lhs.time_since_epoch() - __rhs);
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}
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// duration operator-(time_point x, time_point y);
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template <class _Clock, class _Duration1, class _Duration2>
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inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename common_type<_Duration1, _Duration2>::type
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operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) {
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return __lhs.time_since_epoch() - __rhs.time_since_epoch();
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}
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} // namespace chrono
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_LIBCPP_END_NAMESPACE_STD
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___CHRONO_TIME_POINT_H
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