LibXR::Flag::Plain Class Reference

普通标志位（非原子）/ Non-atomic flag More...

#include <flag.hpp>

Public Member Functions
	Plain ()=default
	构造函数，默认未置位 / Constructor, default cleared
void	Set () noexcept
	置位标志 / Set the flag
void	Clear () noexcept
	清除标志 / Clear the flag
bool	IsSet () const noexcept
	判断是否已置位 / Check whether the flag is set
bool	TestAndSet () noexcept
	测试并置位：置位并返回旧状态 / Test-and-set: set and return previous state
bool	TestAndClear () noexcept
	测试并清除：清除并返回旧状态 / Test-and-clear: clear and return previous state
bool	Exchange (bool set_value) noexcept
	交换：写入指定值并返回旧状态 / Exchange: set to desired value and return previous state

Private Attributes
bool	value_
	标志值（false=clear, true=set）/ Flag value (false=clear, true=set)

Detailed Description

普通标志位（非原子）/ Non-atomic flag

不具备并发安全性；仅适用于单线程环境或外部已保证互斥/临界区保护的场景。 Not thread-safe; use only in single-threaded context or when externally synchronized.

Definition at line 114 of file flag.hpp.

Member Function Documentation

Clear()

void LibXR::Flag::Plain::Clear ( )

inlinenoexcept

清除标志 / Clear the flag

Definition at line 130 of file flag.hpp.

{ value_ = false; }

Exchange()

bool LibXR::Flag::Plain::Exchange ( bool set_value )

inlinenodiscardnoexcept

交换：写入指定值并返回旧状态 / Exchange: set to desired value and return previous state

Parameters

set_value

期望写入的值 / Desired value to write

Returns

true 旧值为 set / Old value was set

false 旧值为 clear / Old value was clear

Definition at line 174 of file flag.hpp.

  {
    bool old = value_;
    value_ = set_value;
    return old;
  }

IsSet()

bool LibXR::Flag::Plain::IsSet ( ) const

inlinenodiscardnoexcept

判断是否已置位 / Check whether the flag is set

Returns

true 已置位 / Flag is set

false 未置位 / Flag is clear

Definition at line 138 of file flag.hpp.

{ return value_; }

Set()

void LibXR::Flag::Plain::Set ( )

inlinenoexcept

置位标志 / Set the flag

Definition at line 125 of file flag.hpp.

{ value_ = true; }

TestAndClear()

bool LibXR::Flag::Plain::TestAndClear ( )

inlinenodiscardnoexcept

测试并清除：清除并返回旧状态 / Test-and-clear: clear and return previous state

Returns

true 先前已置位 / Was set

false 先前未置位 / Was clear

Definition at line 159 of file flag.hpp.

  {
    bool old = value_;
    value_ = false;
    return old;
  }

TestAndSet()

bool LibXR::Flag::Plain::TestAndSet ( )

inlinenodiscardnoexcept

测试并置位：置位并返回旧状态 / Test-and-set: set and return previous state

Returns

true 先前已置位 / Was already set

false 先前未置位 / Was clear

Definition at line 146 of file flag.hpp.

  {
    bool old = value_;
    value_ = true;
    return old;
  }

Field Documentation

value_

bool LibXR::Flag::Plain::value_

private

Initial value:

{
      false}

标志值（false=clear, true=set）/ Flag value (false=clear, true=set)

Definition at line 182 of file flag.hpp.

             {
      false};  

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

• src/utils/flag.hpp