LibXR::MillisecondTimestamp Class Reference

毫秒时间戳 / Millisecond timestamp More...

#include <libxr_time.hpp>

Classes
class	Duration
	毫秒时长 / Duration in milliseconds More...

Public Member Functions
	MillisecondTimestamp ()=default
	创建零值毫秒时间戳 / Construct a zero millisecond timestamp
	MillisecondTimestamp (uint32_t millisecond)
	从毫秒计数构造时间戳 / Construct a timestamp from millisecond ticks
	operator uint32_t () const
	转换为毫秒计数值 / Convert to the raw millisecond tick count
Duration	operator- (const MillisecondTimestamp &old_timestamp) const
	计算时间差，支持时间基准回绕 / Compute elapsed time with timebase wraparound

Detailed Description

毫秒时间戳 / Millisecond timestamp

Definition at line 162 of file libxr_time.hpp.

Constructor & Destructor Documentation

MillisecondTimestamp()

LibXR::MillisecondTimestamp::MillisecondTimestamp ( uint32_t millisecond )

inline

从毫秒计数构造时间戳 / Construct a timestamp from millisecond ticks

Parameters

millisecond

毫秒计数值 / Millisecond tick count

Definition at line 174 of file libxr_time.hpp.

: millisecond_(millisecond) {}

Member Function Documentation

operator uint32_t()

LibXR::MillisecondTimestamp::operator uint32_t ( ) const

inline

转换为毫秒计数值 / Convert to the raw millisecond tick count

Returns

毫秒计数值 / Raw millisecond tick count

Definition at line 180 of file libxr_time.hpp.

{ return millisecond_; }

operator-()

Duration LibXR::MillisecondTimestamp::operator- ( const MillisecondTimestamp & 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 当前已配置的毫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 millisecond timebase limit.

Definition at line 242 of file libxr_time.hpp.

  {
    uint32_t elapsed = 0;
    const uint32_t max_valid = Detail::TimebaseMaxValidMs();
 
    if (millisecond_ >= old_timestamp.millisecond_)
    {
      elapsed = millisecond_ - old_timestamp.millisecond_;
    }
    else
    {
      elapsed = millisecond_ + (max_valid - old_timestamp.millisecond_) + 1U;
    }
 
    ASSERT(elapsed <= max_valid);
 
    return Duration(elapsed);
  }

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

• src/core/libxr_time.hpp