RHIAllocators.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    RHIAllocators.h: Render Hardware Interface allocators
=============================================================================*/
 
#pragma once
 
#include "Experimental/ConcurrentLinearAllocator.h"
 
// Same of FDefaultBlockAllocationTag but custom TagName
struct FCommandListBaseBlockAllocationTag
{
    static constexpr uint32 BlockSize = 64 * 1024;      // Blocksize used to allocate from
    static constexpr bool AllowOversizedBlocks = true;  // The allocator supports oversized Blocks and will store them in a separate Block with counter 1
    static constexpr bool RequiresAccurateSize = true;  // GetAllocationSize returning the accurate size of the allocation otherwise it could be relaxed to return the size to the end of the Block
    static constexpr bool InlineBlockAllocation = false;  // Inline or Noinline the BlockAllocation which can have an impact on Performance
    static constexpr const char* TagName = "RHICommandListBaseAllocator";
 
    using Allocator = TBlockAllocationLockFreeCache<BlockSize, FAlignedAllocator>;
};
 
using FRHICmdListBaseArrayAllocator = TConcurrentLinearArrayAllocator<FCommandListBaseBlockAllocationTag>;
using FRHICmdListBaseSetAllocator = TConcurrentLinearSetAllocator<FCommandListBaseBlockAllocationTag>;
using FRHICmdListBaseLinearAllocator = TConcurrentLinearAllocator<FCommandListBaseBlockAllocationTag>;