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 import gc.g1.unloading.check.cleanup.CleanupAction;
  26 
  27 import java.util.LinkedList;
  28 import java.util.List;
  29 
  30 /**
  31  * Superclass for assertion.
  32  */
  33 public abstract class Assertion {
  34 
  35     public abstract void check();
  36 
  37     private List<Object> storage = new LinkedList<>();
  38 
  39     public void keepLink(Object object) {
  40         storage.add(object);
  41     }
  42 
  43     public void cleanup() {
  44         try {
  45             for (Object o : storage) {
  46                 if (o instanceof CleanupAction) {
  47                     ((CleanupAction) o).cleanup();
  48                 }
  49             }
  50         } catch (Exception e) {
  51             throw new RuntimeException("Something bad happened while cleaning after checked assertion", e);
  52         }
  53     }
  54 
  55 }