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  1. JDK
  2. JDK-6926432

massive outputs to a hidden Java Console fill the heap until exhaustion resulting in browser hang

    Details

    • Subcomponent:
    • CPU:
      generic, x86
    • OS:
      windows, windows_xp

      Backports

        Description

        A mass of outputs to a hidden Java Console will fill the heap until exhaustion resulting in the browser and applet to be unresponsive.

        Steps to reproduce :
        - Start the Java Control Panel and choose to "Hide" or "Do not start" the Java Console.
        - Run the applet provided below in your prefered browser .
        - Start jvisualvm to monitor the java-plugin process.

        You will see the java heap filling until exhaustion. Some GC tentatives will be useless. The Applet and browser will become unresponsive.

        Reproduced with 1.6u18 on Win XP/IE8 with both old and new plugin and Solaris10/Firefox.

        % cat TestApplet.java
        import javax.swing.*;
        import java.awt.*;

        public class TestApplet extends java.applet.Applet {

          public void init (){
                JPanel panel = new JPanel();
                 Label a = new Label("JConsole Test");
                panel.add(a);
                add(panel);

                Thread testThread = new Thread(){
                    public void run()
                    {
                        int i = 0;
                        while( true )
                        {
                            System.out.println("************************");
                            for( int j = 0 ; j < 5000 ; j++)
                                System.out.println("Console Test: "+ i + "-" + j);
                            try{
                                sleep(500);
                            }catch ( Exception ex)
                            {
                                ex.printStackTrace();
                            }
                            i++;
                        }
                    }
                };
                testThread.start();
          }
        }
        I’m sorry. There is a delay while I am working on some higher priority escalations. I expect to be able to get back to this next week.

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                • Assignee:
                  dbuck David Buck
                  Reporter:
                  apoddany Arnaud Poddany (Inactive)
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                  • Created:
                    Updated:
                    Resolved:
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