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  1. JDK
  2. JDK-8276917

Memory Leak caused by MenuBarButton in ControlAcceleratorSupport

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: openjfx17
    • Fix Version/s: None
    • Component/s: javafx
    • Subcomponent:
    • CPU:
      generic
    • OS:
      generic

      Description

      ADDITIONAL SYSTEM INFORMATION :
      openjdk version "11.0.12" 2021-07-20
      OpenJDK Runtime Environment Temurin-11.0.12+7 (build 11.0.12+7)
      OpenJDK 64-Bit Server VM Temurin-11.0.12+7 (build 11.0.12+7, mixed mode)

      Windows 10 Pro 64-bit

      A DESCRIPTION OF THE PROBLEM :
      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. Run attached sample.
      2. Click on the button "change scene"
      3. Take a heap dump and count the number of "MenuBarButton"

      Although MenuBar has been removed from the scene, the reference to MenuBarButton is still in ControlAcceleratorSupport#sceneChangeListenerMap

      ---------- BEGIN SOURCE ----------
      import com.sun.javafx.scene.control.ControlAcceleratorSupport;
      import javafx.application.Application;
      import javafx.event.ActionEvent;
      import javafx.scene.Scene;
      import javafx.scene.control.Button;
      import javafx.scene.control.Menu;
      import javafx.scene.control.MenuBar;
      import javafx.scene.control.MenuItem;
      import javafx.scene.layout.BorderPane;
      import javafx.stage.Stage;

      public class TestFx
      {

          public static void main( String[] args )
          {
              Application.launch( FxApp.class, args );
          }

          public static class FxApp extends Application
          {
              @Override
              public void start( final Stage primaryStage ) throws Exception
              {
                  System.err.println( System.getProperty( "javafx.version" ) );
                  MenuBar bar = createMenuBar( "Test1" );
                  MenuBar bar2 = createMenuBar( "Test2" );
                  MenuBar bar3 = createMenuBar( "Test3" );
                  MenuBar bar4 = createMenuBar( "Test4" );

                  Button button = new Button( "change scene" );

                  BorderPane pane = new BorderPane( button );
                  pane.getChildren()
                      .addAll( bar, bar2, bar3, bar4 );
                  button.setOnAction( ( ActionEvent event ) -> removeMenuBars( pane ) );
                  primaryStage.setScene( new Scene( pane, 800, 600 ) );
                  primaryStage.show();
              }

              private void removeMenuBars( BorderPane aBorderPane )
              {
                  aBorderPane.getChildren()
                      .clear();
              }
          }

          private static MenuBar createMenuBar( String aName )
          {
              MenuBar bar = new MenuBar();
              Menu menu = new Menu( aName );
              MenuItem item = new MenuItem( aName );
              menu.getItems()
                  .add( item );
              bar.getMenus()
                  .add( menu );
              return bar;
          }
      }
      ---------- END SOURCE ----------


      FREQUENCY : always


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              Assignee:
              pnarayanaswa Praveen Narayanaswamy
              Reporter:
              webbuggrp Webbug Group
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                Updated:
                Resolved: