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> Unreal Engine API Reference > Runtime > Engine > Engine > FLevelStreamingGCHelper

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FLevelStreamingGCHelper

Helper structure encapsulating functionality used to defer marking actors and their components as pending kill till right before garbage collection by registering a callback.

Windows

MacOS

Linux

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Engine/World.h
Include	#include "Engine/World.h"

Syntax

struct FLevelStreamingGCHelper

Remarks

Helper structure encapsulating functionality used to defer marking actors and their components as pending kill till right before garbage collection by registering a callback.

Functions

	Name	Description
void	AddGarbageCollectorCallback()	Register with the garbage collector to receive callbacks pre and post garbage collection
void	CancelUnloadRequest ( ULevel* InLevel )	Cancel any pending unload requests for passed in Level.
int32	GetNumLevelsPendingPurge()
void	PrepareStreamedOutLevelsForGC()	Prepares levels that are marked for unload for the GC call by marking their actors and components as pending kill.
void	RequestUnload ( ULevel* InLevel )	Request to be unloaded.
void	VerifyLevelsGotRemovedByGC()	Verify that the level packages are no longer around.

Typedefs

Name	Description
FOnGCStreamedOutLevelsEvent	Called when streamed out levels are going to be garbage collected

Constants

Name	Description
LevelPackageNames	Static array of level packages that have been marked by PrepareStreamedOutLevelsForGC
LevelsPendingUnload	Static array of levels that should be unloaded
OnGCStreamedOutLevels

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