MallocJemalloc.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreGlobals.h"
#include "CoreTypes.h"
#include "HAL/MemoryBase.h"
#include "Logging/LogCategory.h"
#include "Logging/LogMacros.h"
#include "Trace/Detail/Channel.h"
 
class FOutputDevice;
 
// Only use for supported platforms
#if PLATFORM_SUPPORTS_JEMALLOC
 
#define MEM_TIME(st)
 
 
//
// Jason Evans' malloc (default in FreeBSD, NetBSD, used in Firefox, Facebook servers) 
// http://www.canonware.com/jemalloc/
//
class FMallocJemalloc
    : public FMalloc
{
public:
 
    /**
     * Default constructor.
     */
    FMallocJemalloc()
        : MemTime(0.0)
    { }
 
public:
 
    // FMalloc interface.
 
    virtual void* Malloc( SIZE_T Size, uint32 Alignment ) override;
    virtual void* Realloc( void* Ptr, SIZE_T NewSize, uint32 Alignment ) override;
    virtual void Free( void* Ptr ) override;
    virtual void DumpAllocatorStats( FOutputDevice& Ar ) override;
    virtual bool GetAllocationSize(void *Original, SIZE_T &SizeOut) override;
    virtual bool IsInternallyThreadSafe() const override {  return true; }
    virtual const TCHAR* GetDescriptiveName() override { return TEXT("jemalloc"); }
 
protected:
 
    void OutOfMemory( )
    {
        UE_LOG(LogHAL, Fatal, TEXT("%s"), TEXT("Ran out of virtual memory. To prevent this condition, you must free up more space on your primary hard disk.") );
    }
 
private:
 
    /** Time spent on memory tasks, in seconds */
    double MemTime;
};
 
 
#endif // PLATFORM_SUPPORTS_JEMALLOC