flex 实时内存使用率图

<?xml version="1.0"?>
<!-- charts/MemoryGraph.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
				initialize="initTimer()">
	<mx:Script>
		<!--[CDATA[
			import flash.utils.Timer;
			import flash.events.TimerEvent;
			import mx.collections.ArrayCollection;
			[Bindable]
			public var memoryUsage:ArrayCollection=new ArrayCollection();
			public function initTimer():void
			{
// The first parameter in the Timer constructor
// is the interval, in milliseconds. The second
// parameter is how many times to run (0 is
// infinity).
				var myTimer:Timer=new Timer(1000, 0);
// Add the listener for the timer event.
				myTimer.addEventListener("timer", timerHandler);
				myTimer.start();
			}
			public function timerHandler(event:TimerEvent):void
			{
				var o:Object=new Object();
// Get the number of milliseconds since Flash
// Player started.
				o.time=getTimer();
// Get the total memory Flash Player is using.
				o.memory=flash.system.System.totalMemory;
// Add new object to the ArrayCollection, which
// is bound to the chart's data provider.
				memoryUsage.addItem(o);
			}
		]]-->
	</mx:Script>
	<mx:LineChart id="chart"
				  dataProvider="{memoryUsage}"
				  showDataTips="true">
		<mx:horizontalAxis>
			<mx:LinearAxis/>
		</mx:horizontalAxis>
		<mx:verticalAxis>
			<mx:LinearAxis minimum="5000000"/>
		</mx:verticalAxis>
		<mx:series>
			<mx:Array>
				<mx:LineSeries yField="memory"/>
			</mx:Array>
		</mx:series>
	</mx:LineChart>
</mx:Application>