|
0
|
1 /*
|
|
|
2 * Copyright 2000-2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
|
21 * have any questions.
|
|
|
22 *
|
|
|
23 */
|
|
|
24
|
|
|
25 package sun.jvm.hotspot.runtime;
|
|
|
26
|
|
|
27 import java.io.*;
|
|
|
28 import sun.jvm.hotspot.debugger.*;
|
|
|
29 import sun.jvm.hotspot.utilities.*;
|
|
|
30
|
|
|
31 public class StackValue {
|
|
|
32 private int type;
|
|
|
33 private OopHandle handleValue;
|
|
|
34 private long integerValue;
|
|
|
35
|
|
|
36 public StackValue() {
|
|
|
37 type = BasicType.getTConflict();
|
|
|
38 }
|
|
|
39
|
|
|
40 public StackValue(OopHandle h) {
|
|
|
41 handleValue = h;
|
|
|
42 type = BasicType.getTObject();
|
|
|
43 }
|
|
|
44
|
|
|
45 public StackValue(long i) {
|
|
|
46 integerValue = i;
|
|
|
47 type = BasicType.getTInt();
|
|
|
48 }
|
|
|
49
|
|
|
50 /** This returns one of the "enum" values in BasicType.java */
|
|
|
51 public int getType() {
|
|
|
52 return type;
|
|
|
53 }
|
|
|
54
|
|
|
55 public OopHandle getObject() {
|
|
|
56 if (Assert.ASSERTS_ENABLED) {
|
|
|
57 Assert.that(type == BasicType.getTObject(), "type check");
|
|
|
58 }
|
|
|
59 return handleValue;
|
|
|
60 }
|
|
|
61
|
|
|
62 public long getInteger() {
|
|
|
63 if (Assert.ASSERTS_ENABLED) {
|
|
|
64 Assert.that(type == BasicType.getTInt(), "type check");
|
|
|
65 }
|
|
|
66 return integerValue;
|
|
|
67 }
|
|
|
68
|
|
|
69 public boolean equals(Object arg) {
|
|
|
70 if (arg == null) {
|
|
|
71 return false;
|
|
|
72 }
|
|
|
73
|
|
|
74 if (!arg.getClass().equals(getClass())) {
|
|
|
75 return false;
|
|
|
76 }
|
|
|
77
|
|
|
78 StackValue sv = (StackValue) arg;
|
|
|
79 if (type != sv.type) {
|
|
|
80 return false;
|
|
|
81 }
|
|
|
82 if (type == BasicType.getTObject()) {
|
|
|
83 return handleValue.equals(sv.handleValue);
|
|
|
84 } else if (type == BasicType.getTInt()) {
|
|
|
85 return (integerValue == sv.integerValue);
|
|
|
86 } else {
|
|
|
87 // Conflict type (not yet used)
|
|
|
88 return true;
|
|
|
89 }
|
|
|
90 }
|
|
|
91
|
|
|
92 public int hashCode() {
|
|
|
93 if (type == BasicType.getTObject()) {
|
|
|
94 return handleValue.hashCode();
|
|
|
95 } else {
|
|
|
96 // Returns 0 for conflict type
|
|
|
97 return (int) integerValue;
|
|
|
98 }
|
|
|
99 }
|
|
|
100
|
|
|
101 public void print() {
|
|
|
102 printOn(System.out);
|
|
|
103 }
|
|
|
104
|
|
|
105 public void printOn(PrintStream tty) {
|
|
|
106 if (type == BasicType.getTInt()) {
|
|
|
107 tty.print(integerValue + " (long) " + (int) integerValue + " (int)");
|
|
|
108 } else if (type == BasicType.getTObject()) {
|
|
|
109 tty.print("<" + handleValue + ">");
|
|
|
110 } else if (type == BasicType.getTConflict()) {
|
|
|
111 tty.print("conflict");
|
|
|
112 } else {
|
|
|
113 throw new RuntimeException("should not reach here");
|
|
|
114 }
|
|
|
115 }
|
|
|
116 }
|
