Timestamp from a monotonic source. 更多...

#include <Time.h>

Public 成员函数
constexpr	MonotonicTimestamp () noexcept=default
	Construct the zero timestamp.

constexpr	MonotonicTimestamp (std::int64_t nanoseconds) noexcept
	Construct a timestamp from source-relative nanoseconds.

constexpr std::int64_t	nanoseconds () const noexcept
	Return source-relative nanoseconds.

Result< Duration >	since (MonotonicTimestamp earlier) const
	Compute elapsed duration from an earlier timestamp.

静态 Public 成员函数
static constexpr MonotonicTimestamp	zero () noexcept
	Return the zero timestamp.

友元
constexpr bool	operator== (MonotonicTimestamp, MonotonicTimestamp) noexcept=default

constexpr auto	operator<=> (MonotonicTimestamp, MonotonicTimestamp) noexcept=default
	Operator <=>.

详细描述

Timestamp from a monotonic source.

Its epoch is local to the source and must not be persisted or compared with a timestamp produced by another source. It is appropriate for measuring elapsed real time at the scheduler boundary.

在文件 Time.h 第 104 行定义.

构造及析构函数说明

◆ MonotonicTimestamp() [1/2]

constexpr eve::MonotonicTimestamp::MonotonicTimestamp ( )

constexprdefaultnoexcept

Construct the zero timestamp.

◆ MonotonicTimestamp() [2/2]

constexpr eve::MonotonicTimestamp::MonotonicTimestamp ( std::int64_t nanoseconds )

inlineexplicitconstexprnoexcept

Construct a timestamp from source-relative nanoseconds.

在文件 Time.h 第 110 行定义.

成员函数说明

◆ nanoseconds()

constexpr std::int64_t eve::MonotonicTimestamp::nanoseconds ( ) const

inlineconstexprnoexcept

Return source-relative nanoseconds.

在文件 Time.h 第 116 行定义.

◆ since()

Result< Duration > eve::MonotonicTimestamp::since ( MonotonicTimestamp earlier ) const

Compute elapsed duration from an earlier timestamp.

返回: A checked non-negative duration; backward movement is rejected.

在文件 Time.cpp 第 48 行定义.

引用了 distance, eve::Diagnostic::error(), eve::Result< T >::failure(), eve::InvariantViolation, eve::PreconditionViolation , 以及 eve::Result< T >::success().

被这些函数引用 eve::timer::Timer::getTime() , 以及 eve::SimulationClock::sample().

◆ zero()

static constexpr MonotonicTimestamp eve::MonotonicTimestamp::zero ( )

inlinestaticconstexprnoexcept

Return the zero timestamp.

在文件 Time.h 第 113 行定义.

被这些函数引用 eve::timer::Timer::monotonicNow().

友元及相关函数文档

◆ operator<=>

constexpr auto operator<=>	(	MonotonicTimestamp	,
		MonotonicTimestamp
	)

friend

Operator <=>.

◆ operator==

constexpr bool operator==	(	MonotonicTimestamp	,
		MonotonicTimestamp
	)