MallocTBB.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "HAL/MemoryBase.h"
#include "HAL/PlatformMemory.h"
 
#define TBBMALLOC_ENABLED PLATFORM_SUPPORTS_TBB && TBB_ALLOCATOR_ALLOWED
 
#if TBBMALLOC_ENABLED
 
/**
 * TBB 64-bit scalable memory allocator.
 */
class FMallocTBB final
    : public FMalloc
{
public:
    // FMalloc interface.
 
    virtual void* Malloc(SIZE_T Size, uint32 Alignment) override;
    virtual void* TryMalloc(SIZE_T Size, uint32 Alignment) override;
    virtual void* Realloc(void* Ptr, SIZE_T NewSize, uint32 Alignment) override;
    virtual void* TryRealloc(void* Ptr, SIZE_T NewSize, uint32 Alignment) override;
    virtual void Free( void* Ptr ) override;
    virtual bool GetAllocationSize( void *Original, SIZE_T &SizeOut ) override;
    virtual void Trim(bool bTrimThreadCaches) override;
 
    virtual bool IsInternallyThreadSafe( ) const override
    {
        return true;
    }
 
    virtual const TCHAR* GetDescriptiveName( ) override
    {
        return TEXT("TBB");
    }
 
protected:
 
    void OutOfMemory( uint64 Size, uint32 Alignment )
    {
        // this is expected not to return
        FPlatformMemory::OnOutOfMemory(Size, Alignment);
    }
};
 
#endif // TBBMALLOC_ENABLED