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comparison agent/src/share/classes/sun/jvm/hotspot/code/ObjectValue.java @ 818:b109e761e927

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6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14 Summary: Disable escape analysis when jvmti/debugger is used. Add support for EA ibto SA. Reviewed-by: never
author kvn
date Tue, 09 Jun 2009 16:19:10 -0700
parents
children c18cbe5936b8
comparison
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793:eacd97c88873 818:b109e761e927
1 /*
2 * Copyright 2009 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.code;
26
27 import java.io.*;
28 import java.util.*;
29
30 import sun.jvm.hotspot.debugger.*;
31 import sun.jvm.hotspot.utilities.*;
32
33 /** An ObjectValue describes an object eliminated by escape analysis. */
34
35 public class ObjectValue extends ScopeValue {
36 private int id;
37 private ScopeValue klass;
38 private List fieldsValue; // ArrayList<ScopeValue>
39
40 // Field "boolean visited" is not implemented here since
41 // it is used only a during debug info creation.
42
43 public ObjectValue(int id) {
44 this.id = id;
45 klass = null;
46 fieldsValue = new ArrayList();
47 }
48
49 public boolean isObject() { return true; }
50 public int id() { return id; }
51 public ScopeValue getKlass() { return klass; }
52 public List getFieldsValue() { return fieldsValue; }
53 public ScopeValue getFieldAt(int i) { return (ScopeValue)fieldsValue.get(i); }
54 public int fieldsSize() { return fieldsValue.size(); }
55
56 // Field "value" is always NULL here since it is used
57 // only during deoptimization of a compiled frame
58 // pointing to reallocated object.
59 public OopHandle getValue() { return null; }
60
61 /** Serialization of debugging information */
62
63 void readObject(DebugInfoReadStream stream) {
64 klass = readFrom(stream);
65 Assert.that(klass.isConstantOop(), "should be constant klass oop");
66 int length = stream.readInt();
67 for (int i = 0; i < length; i++) {
68 ScopeValue val = readFrom(stream);
69 fieldsValue.add(val);
70 }
71 }
72
73 // Printing
74
75 public void print() {
76 printOn(System.out);
77 }
78
79 public void printOn(PrintStream tty) {
80 tty.print("scalarObj[" + id + "]");
81 }
82
83 void printFieldsOn(PrintStream tty) {
84 if (fieldsValue.size() > 0) {
85 ((ScopeValue)fieldsValue.get(0)).printOn(tty);
86 }
87 for (int i = 1; i < fieldsValue.size(); i++) {
88 tty.print(", ");
89 ((ScopeValue)fieldsValue.get(i)).printOn(tty);
90 }
91 }
92
93 };