test/hotspot/jtreg/runtime/cds/appcds/jvmti/dumpingWithAgent/SimpleAgent.java

*** 1,7 ****
  /*
!  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 21,30 ****
   * questions.
   *
   */
  import java.lang.instrument.Instrumentation;
  
! public class SimpleAgent {
      public static void premain(String agentArg, Instrumentation instrumentation) {
          System.out.println("inside SimpleAgent");
      }
  }
--- 21,51 ----
   * questions.
   *
   */
  import java.lang.instrument.Instrumentation;
  
! public class SimpleAgent implements Runnable {
      public static void premain(String agentArg, Instrumentation instrumentation) {
          System.out.println("inside SimpleAgent");
+ 
+         Thread t = new Thread(new SimpleAgent());
+         t.setDaemon(true);
+         t.start();
+     }
+ 
+     // Test for JDK-8249276: make sure we can handle objects that are locked during
+     // -Xshare:dump
+     public void run() {
+         try {
+             while (true) {
+                 System.out.println("Let's wait .....");
+                 synchronized (Object.class) {
+                     Object.class.wait();
+                 }
+                 System.out.println("Huh?? notified??");
+             }
+         } catch (Throwable t) {
+             System.err.println("Unexpected: " + t);
+             throw new RuntimeException(t);
+         }
      }
  }