MacPlatformMemory.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
 
/*=============================================================================================
    MacPlatformMemory.h: Mac platform memory functions
==============================================================================================*/
 
#pragma once
#include "GenericPlatform/GenericPlatformMemory.h"
#include "Apple/ApplePlatformMemory.h"
 
struct CORE_API FMacPlatformMemory : public FApplePlatformMemory
{
    struct FMacSharedMemoryRegion : public FSharedMemoryRegion
    {
        int GetFileDescriptor() const { return Fd; }
 
        bool NeedsToUnlinkRegion() const { return bCreatedThisRegion; }
 
        FMacSharedMemoryRegion(const FString& InName, uint32 InAccessMode, void* InAddress, SIZE_T InSize, int InFd, bool bInCreatedThisRegion)
            :   FSharedMemoryRegion(InName, InAccessMode, InAddress, InSize)
            ,   Fd(InFd)
            ,   bCreatedThisRegion(bInCreatedThisRegion)
        {}
 
    protected:
 
        int             Fd;
 
        bool            bCreatedThisRegion;
    };
 
    
    
    //~ Begin FGenericPlatformMemory Interface
    static FPlatformMemoryStats GetStats();
    static const FPlatformMemoryConstants& GetConstants();
    static FMalloc* BaseAllocator();
    
    static FGenericPlatformMemoryStats::EMemoryPressureStatus MemoryPressureStatus;
    
    static CORE_API FSharedMemoryRegion * MapNamedSharedMemoryRegion(const FString& InName, bool bCreate, uint32 AccessMode, SIZE_T Size);
    static CORE_API bool UnmapNamedSharedMemoryRegion(FSharedMemoryRegion * MemoryRegion);
    //~ End FGenericPlatformMemory Interface
};
 
typedef FMacPlatformMemory FPlatformMemory;