1 /*
   2  * Copyright (c) 2014, 2018, 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  */
  23 package gc.g1.unloading.check;
  24 
  25 
  26 import gc.g1.unloading.ExecutionTask;
  27 
  28 import java.lang.ref.Reference;
  29 import java.lang.ref.ReferenceQueue;
  30 import java.util.*;
  31 
  32 import nsk.share.test.ExecutionController;
  33 
  34 /**
  35  * This thread listens to queue of phantomized classloaders and marks corresponding assertions as passed.
  36  */
  37 public class PhantomizationServiceThread extends ExecutionTask {
  38 
  39     private static final int TIMEOUT = 100;
  40 
  41     private Map<Reference<?>, PhantomizedAssertion> map = new HashMap<>();
  42 
  43     private ReferenceQueue queue = new ReferenceQueue();
  44 
  45     public PhantomizationServiceThread(ExecutionController executionController) {
  46         super(executionController);
  47     }
  48 
  49     public void add(Reference ref, PhantomizedAssertion assertion) {
  50         map.put(ref, assertion);
  51     }
  52 
  53     public ReferenceQueue getQueue() {
  54         return queue;
  55     }
  56 
  57     @Override
  58     protected void task() throws Exception {
  59         Reference ref = queue.remove(TIMEOUT);
  60         PhantomizedAssertion assertion = map.remove(ref);
  61             if (assertion != null) {
  62                 assertion.setPhantomized();
  63             }
  64     }
  65 
  66 }