77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
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// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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UnObjAllocator.h: Unreal object allocation
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=============================================================================*/
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#pragma once
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#include "CoreMinimal.h"
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class COREUOBJECT_API FUObjectAllocator
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{
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public:
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/**
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* Constructor, initializes to no permanent object pool
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*/
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FUObjectAllocator(): PermanentObjectPoolSize(0),
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PermanentObjectPool(NULL),
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PermanentObjectPoolTail(NULL),
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PermanentObjectPoolExceededTail(NULL)
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{
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}
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/**
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* Allocates and initializes the permanent object pool
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*
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* @param InPermanentObjectPoolSize size of permanent object pool
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*/
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void AllocatePermanentObjectPool(int32 InPermanentObjectPoolSize);
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/**
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* Prints a debugf message to allow tuning
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*/
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void BootMessage();
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/**
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* Checks whether object is part of permanent object pool.
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*
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* @param Object object to test as a member of permanent object pool
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* @return true if object is part of permanent object pool, false otherwise
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*/
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FORCEINLINE bool ResidesInPermanentPool(const UObjectBase* Object) const
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{
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return ((const uint8*)Object >= PermanentObjectPool) && ((const uint8*)Object < PermanentObjectPoolTail);
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}
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/**
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* Allocates a UObjectBase from the free store or the permanent object pool
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*
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* @param Size size of uobject to allocate
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* @param Alignment alignment of uobject to allocate
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* @param bAllowPermanent if true, allow allocation in the permanent object pool, if it fits
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* @return newly allocated UObjectBase (not really a UObjectBase yet, no constructor like thing has been called).
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*/
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UObjectBase* AllocateUObject(int32 Size, int32 Alignment, bool bAllowPermanent);
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/**
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* Returns a UObjectBase to the free store, unless it is in the permanent object pool
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*
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* @param Object object to free
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*/
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void FreeUObject(UObjectBase* Object) const;
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private:
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/** Size in bytes of pool for objects disregarded for GC. */
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int32 PermanentObjectPoolSize;
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/** Begin of pool for objects disregarded for GC. */
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uint8* PermanentObjectPool;
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/** Current position in pool for objects disregarded for GC. */
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uint8* PermanentObjectPoolTail;
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/** Tail that exceeded the size of the permanent object pool, >= PermanentObjectPoolTail. */
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uint8* PermanentObjectPoolExceededTail;
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};
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/** Global UObjectBase allocator */
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extern COREUOBJECT_API FUObjectAllocator GUObjectAllocator;
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