Struct SlabAllocator

Public

A tiny slab allocator.

Allocates spans of type T in power-of-two sized blocks.

Note

This allocator has no support for merging adjacent freed blocks. Therefore it is best suited for similarly sized allocations which are relatively small.

Can be used in burst jobs.

This is faster than allocating NativeArrays using the Temp allocator, and significantly faster than allocating them using the Persistent allocator.

Inner Types

AllocatorData

Header

List

NextBlock

Public Methods

Allocate (...)

Allocates an array...

CheckDisposed ()

Clear ()

Frees all existing allocations.

CopyTo (other)

Dispose ()

Frees all unmanaged memory associated with this container.

Free (allocatedIndex)

Frees a single allocation.

GetList (allocatedIndex)

GetSpan (allocatedIndex)

Get the span representing the given allocation.

Realloc (allocatedIndex, nElements)

SlabAllocator (initialCapacityBytes, allocator)

Public Variables

ByteSize

Public

IsCreated

Public

IsDebugAllocator

Public

data

Public

Public Static Variables

AllocatedBit

Public Static

InvalidAllocation

Allocation which is always invalid.

Public Static

LengthMask

Public Static

MaxAllocationSize

Public Static

MaxAllocationSizeIndex

Public Static

UsedBit

Public Static

ZeroLengthArray

Allocation representing a zero-length array.

Public Static

Private/Protected Members

ElementsToSizeIndex (nElements)

SizeIndexToElements (sizeIndex)

Struct SlabAllocator

Inner Types

Public Methods

Public Variables

int ByteSize

bool IsCreated

bool IsDebugAllocator

unsafeAllocatorData* data

Public Static Variables

const uint AllocatedBit = 1u << 30

const int InvalidAllocation = -2

const uint LengthMask = AllocatedBit - 1

const int MaxAllocationSize = 1 << MaxAllocationSizeIndex

const int MaxAllocationSizeIndex = 12

const uint UsedBit = 1u << 31

const int ZeroLengthArray = -1

Private/Protected Members