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 
check()35     public abstract void check();
36 
37     private List<Object> storage = new LinkedList<>();
38 
keepLink(Object object)39     public void keepLink(Object object) {
40         storage.add(object);
41     }
42 
cleanup()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 }
56