FPS class Memory usage

FPS.hx

override public function update(dt:Float) {
		
		var now = Timer.stamp();
		var memString : String;
		this.times.push(now);
		
		while (this.times[0] < now - 1) {
			times.shift();
		}
		
		#if cpp
			var usage : Float = convertToMB(Gc.memInfo(Gc.MEM_INFO_USAGE));
			
			if (usage > this.memPeak)
				this.memPeak = usage;
				
			memString = "MEN : " + usage + "MB\nMEM Peak : " + this.memPeak + " MB\nMEM Reserved : " + convertToMB(Gc.memInfo(Gc.MEM_INFO_RESERVED)) + "MB";
						
		#end
		
		this.set_text("FPS : " + times.length + "\n" + memString);
	}
	
	private static function convertToMB (mem : Float) {
		return Math.round(mem / 1024 / 1024 * 100) / 100;
	}