java JavaFX折线图实时监控
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public class EffectTest extends Application {
StackPane root;
private static int MAX_DATA_POINTS = 20;
private static int Y_DATA_RANGE = 10;
private static int TICK_UNIT = 10;
private static int UPDATE_INTERVAL_MS = 1000;
private LineChart.Series<Number, Number> series1;
private LineChart<Number, Number> lineChart;
private NumberAxis xAxis = new NumberAxis();
private NumberAxis yAxis = new NumberAxis();
private SequentialTransition animation;
private Paint paintXticklabel;
private double nextX = 0;
Random rnd = new Random();
double currentMemBAK=0;
public EffectTest() {
Timeline timeline = new Timeline();
timeline.getKeyFrames().add(new KeyFrame(Duration.millis(UPDATE_INTERVAL_MS*3), new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
// update chart data
// note that we add one data point and remove one data point in this simple example.
// in a production environment you'd have to add multiple and remove multiple data points
double currentMem= Runtime.getRuntime().totalMemory()-Runtime.getRuntime().freeMemory();
double drawy =(currentMem-currentMemBAK)/1000000;
currentMemBAK=currentMem;
System.out.println("currentMem:"+currentMem);
// add new points
//series1.getData().add(new XYChart.Data<Number, Number>(nextX, Math.cos(Math.toRadians(nextX)) * Y_DATA_RANGE));
//mem
series1.getData().add(new XYChart.Data<Number, Number>(nextX, drawy+10));
//cpu
//series1.getData().add(new XYChart.Data<Number, Number>(nextX, getCpuRatioForWindows()));
// remove points that shouldn't be visible anymore
if (series1.getData().size() > MAX_DATA_POINTS) {
series1.getData().remove(0);
}
System.out.println("node size:"+series1.getData().size());
nextX += 1;
// update using series 1 as reference
// series 2 contains same amount of data; if it doesn't for your case,
// you need to adapt this here and calculate the proper range
List<Data<Number, Number>> data = series1.getData();
xAxis.setLowerBound(data.get(0).getXValue().doubleValue());
xAxis.setUpperBound(data.get(data.size() - 1).getXValue().doubleValue());
////////
lineChart.getXAxis().setTickLabelFill(paintXticklabel);
// xAxis.setTickUnit(1);
root.setTranslateX(-20);
}
}));
timeline.setCycleCount(Animation.INDEFINITE);
animation = new SequentialTransition();
animation.getChildren().addAll(timeline);
}
public Parent createContent() {
xAxis = new NumberAxis();
xAxis.setForceZeroInRange(false);
xAxis.setAutoRanging(false);
xAxis.setTickLabelsVisible(false);
xAxis.setTickMarkVisible(false);
xAxis.setMinorTickVisible(false);
xAxis=new NumberAxis(0, Y_DATA_RANGE+90, TICK_UNIT/10);
// set Axis property
// final NumberAxis yAxis = new NumberAxis(1, 21, 0.1);
// xAxis.setTickUnit(1);
// xAxis.setPrefWidth(35);
// xAxis.setMinorTickCount(10);
// xAxis.setSide(Side.RIGHT);
// xAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(xAxis) {
// @Override
// public String toString(Number object) {
// String label;
// label = String.format("%7.2f", object.floatValue());
// return label;
// }
// });
//yAxis = new NumberAxis(-Y_DATA_RANGE, Y_DATA_RANGE, TICK_UNIT);
yAxis = new NumberAxis(0, Y_DATA_RANGE+90, TICK_UNIT/10);
yAxis.setAutoRanging(false);
lineChart = new LineChart<>(xAxis, yAxis);
lineChart.setAnimated(false);
lineChart.setLegendVisible(false);
//set if dont want symbols on the point
lineChart.setCreateSymbols(false);
series1 = new LineChart.Series<>();
// series1.getData().add(new LineChart.Data<Number, Number>(0d, 0d));
lineChart.getData().add(series1);
//save ticklabe
paintXticklabel=xAxis.getTickLabelFill();
return lineChart;
}
public void play() {
animation.play();
}
@Override
public void stop() {
animation.pause();
}
@Override
public void start(Stage primaryStage) throws Exception {
primaryStage.setTitle("Drawing Operations Test");
root = new StackPane();
root.getChildren().add(createContent());
Scene s= new Scene(root);
primaryStage.setScene(s);
primaryStage.show();
play();
}
public static void main(String[] args) {
launch(args);
// getCpuRatioForWindows() ;
System.out.println(getCpuRatioForWindows());
}
private static final int CPUTIME = 500;
private static final int PERCENT = 100;
public static double getCpuRatioForWindows()
{
try
{
String procCmd =
System.getenv("windir")
+ "\\system32\\wbem\\wmic.exe process get Caption,CommandLine,KernelModeTime,ReadOperationCount,ThreadCount,UserModeTime,WriteOperationCount";
long[] c0 = readCpu(Runtime.getRuntime().exec(procCmd));
Thread.sleep(CPUTIME);
long[] c1 = readCpu(Runtime.getRuntime().exec(procCmd));
if (c0 != null && c1 != null)
{
long idletime = c1[0] - c0[0];
long busytime = c1[1] - c0[1];
return Double.valueOf(PERCENT * (busytime) * 1.0 / (busytime + idletime)).intValue() ;
}
else
{
return 0 ;
}
}
catch (Exception ex)
{
ex.printStackTrace();
return 0 ;
}
}
private static final int FAULTLENGTH = 10;
private static long[] readCpu(final Process proc)
{
long[] retn = new long[2];
try
{
proc.getOutputStream().close();
InputStreamReader ir = new InputStreamReader(proc.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
String line = input.readLine();
if (line == null || line.length() < FAULTLENGTH)
{
return null;
}
int capidx = line.indexOf("Caption");
int cmdidx = line.indexOf("CommandLine");
int rocidx = line.indexOf("ReadOperationCount");
int umtidx = line.indexOf("UserModeTime");
int kmtidx = line.indexOf("KernelModeTime");
int wocidx = line.indexOf("WriteOperationCount");
long idletime = 0;
long kneltime = 0;
long usertime = 0;
while ((line = input.readLine()) != null)
{
if (line.length() < wocidx)
{
continue;
}
//Caption,CommandLine,KernelModeTime,ReadOperationCount,
// ThreadCount,UserModeTime,WriteOperation
String caption = substring(line, capidx, cmdidx - 1).trim();
String cmd = substring(line, cmdidx, kmtidx - 1).trim();
if (cmd.indexOf("wmic.exe") >= 0)
{
continue;
}
String s1 = substring(line, kmtidx, rocidx - 1).trim();
String s2 = substring(line, umtidx, wocidx - 1).trim();
if (caption.equals("System Idle Process") || caption.equals("System"))
{
if (s1.length() > 0)
idletime += Long.valueOf(s1).longValue();
if (s2.length() > 0)
idletime += Long.valueOf(s2).longValue();
continue;
}
if (s1.length() > 0)
kneltime += Long.valueOf(s1).longValue();
if (s2.length() > 0)
usertime += Long.valueOf(s2).longValue();
}
retn[0] = idletime;
retn[1] = kneltime + usertime;
return retn;
}
catch (Exception ex)
{
ex.printStackTrace();
}
finally
{
try
{
proc.getInputStream().close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
return null;
}
private static String substring(String src, int start_idx, int end_idx)
{
byte[] b = src.getBytes();
String tgt = "";
for (int i = start_idx; i <= end_idx; i++)
{
tgt += (char)b[i];
}
return tgt;
}
}
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