LibXR::MicrosecondTimestamp Class Reference

微秒时间戳 / Microsecond timestamp More...

#include <libxr_time.hpp>

Data Structures
class	Duration
	微秒时长 / Duration in microseconds More...

Public Member Functions
	MicrosecondTimestamp ()=default
	创建零值微秒时间戳 / Construct a zero microsecond timestamp
	MicrosecondTimestamp (uint64_t microsecond)
	从微秒计数构造时间戳 / Construct a timestamp from microsecond ticks
	operator uint64_t () const
	转换为微秒计数值 / Convert to the raw microsecond tick count
Duration	operator- (const MicrosecondTimestamp &old_timestamp) const
	计算时间差，支持时间基准回绕 / Compute elapsed time with timebase wraparound
MicrosecondTimestamp &	operator= (const MicrosecondTimestamp &other)=default
	复制赋值 / Copy-assign from another timestamp

Private Attributes
uint64_t	microsecond_ = 0

Detailed Description

微秒时间戳 / Microsecond timestamp

Definition at line 46 of file libxr_time.hpp.

Constructor & Destructor Documentation

MicrosecondTimestamp()

LibXR::MicrosecondTimestamp::MicrosecondTimestamp ( uint64_t microsecond )

inline

从微秒计数构造时间戳 / Construct a timestamp from microsecond ticks

Parameters

microsecond

微秒计数值 / Microsecond tick count

Definition at line 58 of file libxr_time.hpp.

: microsecond_(microsecond) {}

Member Function Documentation

operator uint64_t()

LibXR::MicrosecondTimestamp::operator uint64_t ( ) const

inline

转换为微秒计数值 / Convert to the raw microsecond tick count

Returns

微秒计数值 / Raw microsecond tick count

Definition at line 64 of file libxr_time.hpp.

{ return microsecond_; }

operator-()

Duration LibXR::MicrosecondTimestamp::operator- ( const MicrosecondTimestamp & old_timestamp ) const

inlinenodiscard

计算时间差，支持时间基准回绕 / Compute elapsed time with timebase wraparound

Parameters

old_timestamp

旧时间戳 / Older timestamp

Returns

当前时间戳相对旧时间戳的时长 / Elapsed duration from the older timestamp

Note

若当前时间戳小于旧时间戳，则按一次时间基准回绕处理，回绕上界由 当前已配置的微秒时间基准有效上界指定。 / If the current timestamp is smaller than the older one, the function treats it as one wraparound event whose upper bound is defined by the currently configured microsecond timebase limit.

Definition at line 129 of file libxr_time.hpp.

  {
    uint64_t elapsed = 0;
    const uint64_t max_valid = Detail::TimebaseMaxValidUs();
 
    if (microsecond_ >= old_timestamp.microsecond_)
    {
      elapsed = microsecond_ - old_timestamp.microsecond_;
    }
    else
    {
      elapsed = microsecond_ + (max_valid - old_timestamp.microsecond_) + 1ULL;
    }
 
    ASSERT(elapsed <= max_valid);
 
    return Duration(elapsed);
  }

operator=()

MicrosecondTimestamp & LibXR::MicrosecondTimestamp::operator= ( const MicrosecondTimestamp & other )

default

复制赋值 / Copy-assign from another timestamp

Parameters

other

源时间戳 / Source timestamp

Returns

当前对象引用 / Reference to this object

Field Documentation

microsecond_

uint64_t LibXR::MicrosecondTimestamp::microsecond_ = 0

private

Definition at line 156 of file libxr_time.hpp.

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The documentation for this class was generated from the following file:

• src/core/libxr_time.hpp