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test/jdk/java/rmi/server/UnicastRemoteObject/unexportObject/UnexportLeak.java

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rev 56635 : v2.00 -> v2.05 (CR5/v2.05/8-for-jdk13) patches combined into one; merge with 8229212.patch; merge with jdk-14+11; merge with 8230184.patch; merge with 8230876.patch; merge with jdk-14+15; merge with jdk-14+18.
   1 /*
   2  * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */


  57             LocateRegistry.getRegistry(registryPort).rebind("UnexportLeak", obj);
  58             UnicastRemoteObject.unexportObject(obj, true);
  59             obj = null;
  60             flushRefs();
  61             if (wr.get() != null) {
  62                 System.err.println("FAILED: unexported object not collected");
  63                 throw new RuntimeException(
  64                     "FAILED: unexported object not collected");
  65             } else {
  66                 System.err.println("PASSED: unexported object collected");
  67             }
  68         } catch (RemoteException e) {
  69             System.err.println(
  70                 "FAILED: RemoteException encountered: " + e.getMessage());
  71             e.printStackTrace();
  72             throw new RuntimeException("FAILED: RemoteException encountered");
  73         }
  74     }
  75 
  76     /**
  77      * Force desparate garbage collection so that all WeakReference instances
  78      * will be cleared.
  79      */
  80     private static void flushRefs() {
  81         java.util.Vector chain = new java.util.Vector();
  82         try {
  83             while (true) {
  84                 int[] hungry = new int[65536];
  85                 chain.addElement(hungry);
  86             }
  87         } catch (OutOfMemoryError e) {



  88         }
  89     }
  90 }
   1 /*
   2  * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */


  57             LocateRegistry.getRegistry(registryPort).rebind("UnexportLeak", obj);
  58             UnicastRemoteObject.unexportObject(obj, true);
  59             obj = null;
  60             flushRefs();
  61             if (wr.get() != null) {
  62                 System.err.println("FAILED: unexported object not collected");
  63                 throw new RuntimeException(
  64                     "FAILED: unexported object not collected");
  65             } else {
  66                 System.err.println("PASSED: unexported object collected");
  67             }
  68         } catch (RemoteException e) {
  69             System.err.println(
  70                 "FAILED: RemoteException encountered: " + e.getMessage());
  71             e.printStackTrace();
  72             throw new RuntimeException("FAILED: RemoteException encountered");
  73         }
  74     }
  75 
  76     /**
  77      * Force desperate garbage collection so that all WeakReference instances
  78      * will be cleared.
  79      */
  80     private static void flushRefs() {
  81         java.util.Vector chain = new java.util.Vector();
  82         try {
  83             while (true) {
  84                 int[] hungry = new int[65536];
  85                 chain.addElement(hungry);
  86             }
  87         } catch (OutOfMemoryError e) {
  88             // An inflated Java monitor can keep 'obj' alive so request
  89             // an explicit GC to make sure things are cleaned up.
  90             System.gc();
  91         }
  92     }
  93 }
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