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Memory

Unreal Engine C++ API Reference > Runtime > Core

Classes

  Type Name Description
Public class FAnsiArena CRT heap allocatorAll allocations are passed through to CRT memory allocation functions  
Public class FArenaPointer Tagged Arena Pointer  
Public class FBufferOwner A reference-counted owner for a buffer, which is a raw pointer and size.  
Public class FCompositeBuffer FCompositeBuffer is a non-contiguous buffer composed of zero or more immutable shared buffers.  
Public struct FLinearAllocator    
Public class FMallocArena Heap arena  
Public class FMemoryArena Memory arena interface  
Public struct FPersistentLinearAllocatorExtends    
Public struct FScopedStackAllocatorBookmark    
Public class FSharedBuffer A reference to a shared-ownership immutable buffer.  
Public struct FSharedOps    
Public class FUniqueBuffer A reference to a single-ownership mutable buffer.  
Public class FVirtualStackAllocator    
Public struct FWeakOps    
Public class FWeakSharedBuffer A weak reference to a shared-ownership immutable buffer.  
Public class TArenaPointer    
Public class TBufferOwnerDeleteFunction    
Public class TBufferOwnerPtr    
Public class TBufferOwnerTArray    
Public class TMemoryView A non-owning view of a contiguous region of memory.  

Typedefs

Name Description
FMemoryView A non-owning view of a contiguous region of memory.
FMutableMemoryView A non-owning mutable view of a contiguous region of memory.

Enums

  Type Name Description
Public enum EVirtualStackAllocatorDecommitMode Implements a stack-style allocator backed by a dedicated block of virtual memory  

Functions

  Type Name Description
Public function FArenaPointer

ArenaRealloc ( FArenaPointer InPtr,
SIZE_T OldSize,
SIZE_T NewSize,
SIZE_T Alignment
)

  
Public function FArenaPointer

ArenaRealloc ( FMemoryArena* Arena,
void* InPtr,
SIZE_T OldSize,
SIZE_T NewSize,
SIZE_T Alignment
)

  
Public function FLinearAllocator &  
Public function auto

MakeMemoryView ( DataType* Data,
DataEndType* DataEnd
)

 Make a non-owning view starting at Data and ending at DataEnd.
Public function TMemoryView< const void >

MakeMemoryView ( const void* Data,
uint64 Size
)

 Make a non-owning const view of Size bytes starting at Data.
Public function TMemoryView< const void >

MakeMemoryView ( std::initializer_list< typename TIdentity< T >::Type > List
)

 Make a non-owning view of the memory of the initializer list.
Public function auto

MakeMemoryView ( ContainerType&& Container
)

 Make a non-owning view of the memory of the contiguous container.
Public function TMemoryView< void >

MakeMemoryView ( void* Data,
uint64 Size
)

 Make a non-owning mutable view of Size bytes starting at Data.
Public function FSharedBuffer

MakeSharedBufferFromArray ( TArray< T, Allocator >&& Array
)

 Construct a shared buffer by taking ownership of an array.
Public function FUniqueBuffer

MakeUniqueBufferFromArray ( TArray< T, Allocator >&& Array
)

 Construct a unique buffer by taking ownership of an array.
Public function bool  
Public function FBufferOwner::EBufferOwnerFlags  
Public function FBufferOwner::EBufferOwnerFlags &  
Public function FBufferOwner::EBufferOwnerFlags  
Public function FBufferOwner::EBufferOwnerFlags &  
Public function FBufferOwner::EBufferOwnerFlags  
Public function FBufferOwner::EBufferOwnerFlags &  
Public function FBufferOwner::EBufferOwnerFlags  
Public function TMemoryView< DataType >

operator+ ( const TMemoryView< DataType >& View,
uint64 Offset
)

 Advances the start of the view by an offset, which is clamped to stay within the view.
Public function TMemoryView< DataType >

operator+ ( uint64 Offset,
const TMemoryView< DataType >& View
)

 Advances the start of the view by an offset, which is clamped to stay within the view.

Variables

  Type Name Description
Public variable FPersistentLinearAllocatorExtends GPersistentLinearAllocatorExtends Special case for the FPermanentObjectPoolExtents to reduce the amount of pointer dereferencing.

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