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 }