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问题描述

我写了一段代码，在我写这些代码时让字母出现并飞起来。它消耗了大量内存的问题。

I have written a piece of code, to make letters appear and fly as I write them. The problem it consumes a lot of memory.

我已经优化了一点

共享路径对象并在侦听器中更新其参数。

每次打印新信件时调用gc

Sharing the path object and update its parameters in listeners.
Calling gc each time a new letter is printed

但它仍然使用大量内存，所以有关如何降低内存利用率的想法吗？

But it still uses a lot of memory, so any ideas about how to reduce its memory utilization ?

提前致谢。



    package sample;

    import javafx.animation.PathTransition;
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.layout.Pane;
    import javafx.scene.paint.Color;
    import javafx.scene.shape.LineTo;
    import javafx.scene.shape.MoveTo;
    import javafx.scene.shape.Path;
    import javafx.scene.text.Font;
    import javafx.scene.text.Text;
    import javafx.stage.Stage;
    import javafx.util.Duration;

    public class Main extends Application {

        public static void main(String[] args) {
            launch(args);
        }

        @Override
        public void start(Stage primaryStage) throws Exception {
            Pane root = new Pane();
            Scene scene = new Scene(root);
            root.setCache(false);
            primaryStage.setTitle("Hello World");
            primaryStage.setScene(scene);


            Path path = new Path();
            root.widthProperty().addListener((observableValue, oldSceneWidth, newSceneWidth) -> SetPathElements(path, root));
            root.heightProperty().addListener((observableValue, oldSceneWidth, newSceneWidth) -> SetPathElements(path, root));


            Duration duration = Duration.millis(1000);

            scene.setOnKeyPressed(event -> {
                System.gc();

                Text textNode = new Text(event.getText());
                textNode.setFont(Font.font(50));
                textNode.setFill(Color.ORANGE);
                root.getChildren().add(textNode);


                PathTransition pathTransition = new PathTransition();
                pathTransition.setDuration(duration);
                pathTransition.setPath(path);
                pathTransition.setCycleCount(1);

                pathTransition.setNode(textNode);
                pathTransition.setOnFinished(event1 -> {
                    root.getChildren().remove(textNode);
                    pathTransition.setNode(null);
                    pathTransition.setPath(null);
                    textNode.setFont(null);
                    textNode.setFill(null);
                });
                pathTransition.play();


            });
            primaryStage.show();
        }

        private void SetPathElements(Path path, Pane root) {
            path.getElements().clear();
            double w = root.getWidth();
            double h = root.getHeight();
            path.getElements().add(new MoveTo(w / 2, h));
            path.getElements().add(new LineTo(w / 2, -40));
        }
    }

编辑＃1

操作系统：Arch Linux 64位
平台：Intel i7-3rd代，8 GB ram
IDE：Intellij
JDK：1.8.0_102

EDIT #1

OS: Arch Linux 64-bitPlatform: Intel i7-3rd generation, 8 GB ramIDE : IntellijJDK : 1.8.0_102

泄漏证明：输入大约100个字符后，它从50 MB跳到1.3 GB

Proof of leak : After typing around 100 chars it jumped from 50 MB to 1.3 GB

我已经使用jvisualvm检查了堆大小，它表明堆大大扩展但使用的部分不超过~50 MB

I have checked Heap size using jvisualvm and it indicates that the Heap expands greatly but the used portion don't exceed ~50 MB

Mesa

优化JavaFX中的内存泄漏

问题描述

编辑＃1

EDIT #1

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