TInheritedGuardValue | Unreal Engine 5.8 Documentation

API > API/Runtime > API/Runtime/Core

Combines TGuardValue with FInheritedContextExtension + FInheritedContextExtensionScope. Sets a value for the current scope (like TGuardValue) AND propagates it to async tasks launched within the scope (via the inherited context extension mechanism).

Usage with callable accessor (creates extension internally): static thread_local bool GMyFlag = false; TInheritedGuardValue Guard([]() -> bool& { return GMyFlag; }, true);

Usage with pre-built extension (avoids allocation per guard): static auto GExt = UE::MakeInheritedContextExtension([]() -> bool& { return GMyFlag; }); TInheritedGuardValue Guard(GExt, GMyFlag, true);


Name	TInheritedGuardValue
Type	struct
Header File	/Engine/Source/Runtime/Core/Public/Async/InheritedGuardValue.h
Include Path	#include "Async/InheritedGuardValue.h"

Syntax

template<typename RefType, typename AssignedType>  
struct TInheritedGuardValue : private FNoncopyable

Inheritance Hierarchy

FNoncopyable → TInheritedGuardValue

Constructors

Name	Remarks	Include Path	Unreal Specifiers
TInheritedGuardValue ( Func GetVar, const AssignedType& NewValue )	Callable constructor — creates the extension internally.	Async/InheritedGuardValue.h
TInheritedGuardValue ( const UE::FInheritedContextExtension& InExtension, RefType& ReferenceValue, const AssignedType& NewValue )	Pre-built extension constructor — reuses an existing FInheritedContextExtension.	Async/InheritedGuardValue.h

Destructors

Name	Remarks	Include Path	Unreal Specifiers
~TInheritedGuardValue()		Async/InheritedGuardValue.h

Variables

Protected

Name	Type	Include Path
Extension	UE::FInheritedContextExtension	Async/InheritedGuardValue.h
OriginalValue	AssignedType	Async/InheritedGuardValue.h
RefValue	RefType &	Async/InheritedGuardValue.h
Scope	UE::FInheritedContextExtensionScope	Async/InheritedGuardValue.h

Functions

Public

Name	Remarks	Include Path	Unreal Specifiers
const AssignedType & GetOriginalValue()	Provides read-only access to the original value of the data being tracked by this struct	Async/InheritedGuardValue.h

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