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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/PerfDataPrologue.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2004 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.util.*;
28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.oops.*;
30 import sun.jvm.hotspot.types.*;
31
32 public class PerfDataPrologue extends VMObject {
33 private static JIntField magicField;
34 private static JByteField byteOrderField;
35 private static JByteField majorVersionField;
36 private static JByteField minorVersionField;
37 private static JByteField accessibleField;
38 private static JIntField usedField;
39 private static JIntField overflowField;
40 private static JLongField modTimeStampField;
41 private static JIntField entryOffsetField;
42 private static JIntField numEntriesField;
43
44 static {
45 VM.registerVMInitializedObserver(new Observer() {
46 public void update(Observable o, Object data) {
47 initialize(VM.getVM().getTypeDataBase());
48 }
49 });
50 }
51
52 private static synchronized void initialize(TypeDataBase db) {
53 Type type = db.lookupType("PerfDataPrologue");
54 magicField = type.getJIntField("magic");
55 byteOrderField = type.getJByteField("byte_order");
56 majorVersionField = type.getJByteField("major_version");
57 minorVersionField = type.getJByteField("minor_version");
58 accessibleField = type.getJByteField("accessible");
59 usedField = type.getJIntField("used");
60 overflowField = type.getJIntField("overflow");
61 modTimeStampField = type.getJLongField("mod_time_stamp");
62 entryOffsetField = type.getJIntField("entry_offset");
63 numEntriesField = type.getJIntField("num_entries");
64 }
65
66 public PerfDataPrologue(Address addr) {
67 super(addr);
68 }
69
70 // Accessors
71 public int magic() {
72 return (int) magicField.getValue(addr);
73 }
74
75 public byte byteOrder() {
76 return (byte) byteOrderField.getValue(addr);
77 }
78
79 public byte majorVersion() {
80 return (byte) majorVersionField.getValue(addr);
81 }
82
83 public boolean accessible() {
84 return ((byte) accessibleField.getValue(addr)) != (byte)0;
85 }
86
87 public int used() {
88 return (int) usedField.getValue(addr);
89 }
90
91 public int overflow() {
92 return (int) overflowField.getValue(addr);
93 }
94
95 public long modTimeStamp() {
96 return (long) modTimeStampField.getValue(addr);
97 }
98
99 public int entryOffset() {
100 return (int) entryOffsetField.getValue(addr);
101 }
102
103 public int numEntries() {
104 return (int) numEntriesField.getValue(addr);
105 }
106 }