LibXR::Flag::ScopedRestore< FlagT > Class Template Reference

作用域标志管理器：构造时写入指定值，析构时恢复原值 / Scoped flag restorer: set on entry, restore on exit More...

#include <flag.hpp>

Public Member Functions
	ScopedRestore (FlagT &flag, bool set_value=true)
	构造函数：写入 set_value 并保存旧值 / Constructor: set set_value and store previous value
	~ScopedRestore ()
	析构函数：恢复旧值 / Destructor: restore previous value
	ScopedRestore (const ScopedRestore &)=delete
	禁用拷贝构造与拷贝赋值 / Copy construction and copy assignment are disabled
ScopedRestore &	operator= (const ScopedRestore &)=delete

Private Attributes
FlagT &	flag_
	被管理的标志对象 / Managed flag instance
bool	prev_
	进入作用域前的旧值 / Previous value before entering scope

Detailed Description

template<typename FlagT>
class LibXR::Flag::ScopedRestore< FlagT >

作用域标志管理器：构造时写入指定值，析构时恢复原值 / Scoped flag restorer: set on entry, restore on exit

适用于“进入作用域临时改变 flag，退出恢复”的场景。 Useful when temporarily changing a flag within a scope and restoring it on exit.

Template Parameters

FlagT

支持 Exchange(bool)->bool 的标志类型 / Flag type that provides Exchange(bool)->bool

Definition at line 198 of file flag.hpp.

Constructor & Destructor Documentation

ScopedRestore()

template<typename FlagT >

LibXR::Flag::ScopedRestore< FlagT >::ScopedRestore ( FlagT & flag, bool set_value = true )

inlineexplicit

构造函数：写入 set_value 并保存旧值 / Constructor: set set_value and store previous value

Parameters

flag	需要管理的标志对象 / Flag instance to manage
set_value	构造时写入的值 / Value to set on construction

Definition at line 208 of file flag.hpp.

      : flag_(flag), prev_(flag_.Exchange(set_value))
  {
  }

~ScopedRestore()

template<typename FlagT >

LibXR::Flag::ScopedRestore< FlagT >::~ScopedRestore ( )

inline

析构函数：恢复旧值 / Destructor: restore previous value

Definition at line 216 of file flag.hpp.

{ (void)flag_.Exchange(prev_); }

Field Documentation

flag_

template<typename FlagT >

FlagT& LibXR::Flag::ScopedRestore< FlagT >::flag_

private

被管理的标志对象 / Managed flag instance

Definition at line 225 of file flag.hpp.

prev_

template<typename FlagT >

bool LibXR::Flag::ScopedRestore< FlagT >::prev_

private

进入作用域前的旧值 / Previous value before entering scope

Definition at line 226 of file flag.hpp.

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

• src/utils/flag.hpp