Memory Usage reported by OS

This will add a new Torque Script metrics string called mem and it will display/get the memory usage (in KB) as reported by your OS.

Script Usage:

metrics(mem);
%memMB = getMemoryUsageOS() / 1024;

Source Modifications

File: Engine/source/platform/platform.h
After Line 174 add:

// return memory usage in KB for application as reported by OS
U32 getMemoryUsage();

File: Engine/source/platformWin32/winMemory.cpp
After Line 23 add:

#include "console/engineAPI.h"
#include "console/console.h"
#include <psapi.h>

After line 77 add:

//--------------------------------------
// return memory usage in KB for application as reported by OS
U32 Platform::getMemoryUsage()
{
   PROCESS_MEMORY_COUNTERS pmc;
   GetProcessMemoryInfo(GetCurrentProcess(),pmc,sizeof(pmc));
   U32 memUsage = (U32)pmc.WorkingSetSize;

   return memUsage / 1024;
}

DefineConsoleFunction( getMemoryUsageOS, int, ( ),,"@brief Returns memory usage in KB as reported by the OS")
{
   U32 mem = Platform::getMemoryUsage();
   return mem;
}

File: your_game/game/core/scripts/client/metrics.cs

function memMetricsCallback()
{
   return "  | MEM |" @ " OS Memory Used: " @ ( getMemoryUsageOS() /1024 ) @ " MB";
}

This is for Windows OS but it would honestly be very trivial for Linux/OS X support