1 /*
2  * Copyright (c) 2011, 2015, 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 jdk.vm.ci.code;
24 
25 import jdk.vm.ci.meta.AllocatableValue;
26 import jdk.vm.ci.meta.JavaValue;
27 import jdk.vm.ci.meta.Value;
28 
29 /**
30  * Represents lock information in the debug information.
31  */
32 public final class StackLockValue implements JavaValue {
33 
34     private JavaValue owner;
35     private AllocatableValue slot;
36     private final boolean eliminated;
37 
StackLockValue(JavaValue object, AllocatableValue slot, boolean eliminated)38     public StackLockValue(JavaValue object, AllocatableValue slot, boolean eliminated) {
39         this.owner = object;
40         this.slot = slot;
41         this.eliminated = eliminated;
42     }
43 
getOwner()44     public JavaValue getOwner() {
45         return owner;
46     }
47 
setOwner(JavaValue newOwner)48     public void setOwner(JavaValue newOwner) {
49         this.owner = newOwner;
50     }
51 
getSlot()52     public Value getSlot() {
53         return slot;
54     }
55 
isEliminated()56     public boolean isEliminated() {
57         return eliminated;
58     }
59 
60     @Override
toString()61     public String toString() {
62         return "monitor[" + owner + (slot != null ? ", " + slot : "") + (eliminated ? ", eliminated" : "") + "]";
63     }
64 
65     @Override
hashCode()66     public int hashCode() {
67         final int prime = 43;
68         int result = super.hashCode();
69         result = prime * result + (eliminated ? 1231 : 1237);
70         result = prime * result + owner.hashCode();
71         result = prime * result + slot.hashCode();
72         return result;
73     }
74 
75     @Override
equals(Object obj)76     public boolean equals(Object obj) {
77         if (obj instanceof StackLockValue) {
78             StackLockValue other = (StackLockValue) obj;
79             return super.equals(obj) && eliminated == other.eliminated && owner.equals(other.owner) && slot.equals(other.slot);
80         }
81         return false;
82     }
83 
setSlot(AllocatableValue stackSlot)84     public void setSlot(AllocatableValue stackSlot) {
85         slot = stackSlot;
86     }
87 }
88