View Javadoc
1   /*
2    * Copyright (c) 2001, 2009, 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   */
24  
25  package sun.jvm.hotspot.runtime;
26  
27  import sun.jvm.hotspot.debugger.*;
28  import sun.jvm.hotspot.utilities.*;
29  
30  public class MonitorInfo {
31    private OopHandle owner;
32    private BasicLock lock;
33    private OopHandle ownerKlass;
34    private boolean eliminated;
35    private boolean ownerIsScalarReplaced;
36  
37    public MonitorInfo(OopHandle owner, BasicLock lock, boolean eliminated, boolean ownerIsScalarReplaced) {
38      if (!ownerIsScalarReplaced) {
39        this.owner = owner;
40        this.ownerKlass = null;
41      } else {
42        Assert.that(eliminated, "monitor should be eliminated for scalar replaced object");
43        this.owner = null;
44        this.ownerKlass = owner;
45      }
46      this.eliminated = eliminated;
47      this.ownerIsScalarReplaced = ownerIsScalarReplaced;
48    }
49  
50    public OopHandle owner() {
51     Assert.that(!ownerIsScalarReplaced, "should not be called for scalar replaced object");
52     return owner;
53    }
54  
55    public OopHandle ownerKlass() {
56     Assert.that(ownerIsScalarReplaced, "should not be called for not scalar replaced object");
57     return ownerKlass;
58    }
59  
60    public BasicLock lock()  { return lock; }
61    public boolean eliminated() { return eliminated; }
62    public boolean ownerIsScalarReplaced() { return ownerIsScalarReplaced; }
63  }