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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/solaris_amd64/SolarisAMD64JavaThreadPDAccess.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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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.solaris_amd64;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.debugger.amd64.*;
31 import sun.jvm.hotspot.runtime.*;
32 import sun.jvm.hotspot.runtime.amd64.*;
33 import sun.jvm.hotspot.types.*;
34 import sun.jvm.hotspot.utilities.*;
35
36 public class SolarisAMD64JavaThreadPDAccess implements JavaThreadPDAccess {
37 private static AddressField lastJavaFPField;
38 private static AddressField osThreadField;
39 private static AddressField baseOfStackPointerField;
40
41 // Field from OSThread
42 private static CIntegerField osThreadThreadIDField;
43
44 // This is currently unneeded but is being kept in case we change
45 // the currentFrameGuess algorithm
46 private static final long GUESS_SCAN_RANGE = 128 * 1024;
47
48
49 static {
50 VM.registerVMInitializedObserver(new Observer() {
51 public void update(Observable o, Object data) {
52 initialize(VM.getVM().getTypeDataBase());
53 }
54 });
55 }
56
57 private static synchronized void initialize(TypeDataBase db) {
58 Type type = db.lookupType("JavaThread");
59 Type anchorType = db.lookupType("JavaFrameAnchor");
60
61 lastJavaFPField = anchorType.getAddressField("_last_Java_fp");
62 osThreadField = type.getAddressField("_osthread");
63
64 type = db.lookupType("OSThread");
65 osThreadThreadIDField = type.getCIntegerField("_thread_id");
66 }
67
68 public Address getLastJavaFP(Address addr) {
69 return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset()));
70 }
71
72 public Address getLastJavaPC(Address addr) {
73 return null;
74 }
75
76 public Address getBaseOfStackPointer(Address addr) {
77 return null;
78 }
79
80 public Frame getLastFramePD(JavaThread thread, Address addr) {
81 Address fp = thread.getLastJavaFP();
82 if (fp == null) {
83 return null; // no information
84 }
85 Address pc = thread.getLastJavaPC();
86 if ( pc != null ) {
87 return new AMD64Frame(thread.getLastJavaSP(), fp, pc);
88 } else {
89 return new AMD64Frame(thread.getLastJavaSP(), fp);
90 }
91 }
92
93 public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) {
94 return new AMD64RegisterMap(thread, updateMap);
95 }
96
97 public Frame getCurrentFrameGuess(JavaThread thread, Address addr) {
98 ThreadProxy t = getThreadProxy(addr);
99 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext();
100 AMD64CurrentFrameGuess guesser = new AMD64CurrentFrameGuess(context, thread);
101 if (!guesser.run(GUESS_SCAN_RANGE)) {
102 return null;
103 }
104 if (guesser.getPC() == null) {
105 return new AMD64Frame(guesser.getSP(), guesser.getFP());
106 } else {
107 return new AMD64Frame(guesser.getSP(), guesser.getFP(), guesser.getPC());
108 }
109 }
110
111
112 public void printThreadIDOn(Address addr, PrintStream tty) {
113 tty.print(getThreadProxy(addr));
114 }
115
116
117 public void printInfoOn(Address threadAddr, PrintStream tty) {
118 }
119
120 public Address getLastSP(Address addr) {
121 ThreadProxy t = getThreadProxy(addr);
122 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext();
123 return context.getRegisterAsAddress(AMD64ThreadContext.RSP);
124 }
125
126 public ThreadProxy getThreadProxy(Address addr) {
127 // Fetch the OSThread (for now and for simplicity, not making a
128 // separate "OSThread" class in this package)
129 Address osThreadAddr = osThreadField.getValue(addr);
130 // Get the address of the thread ID from the OSThread
131 Address tidAddr = osThreadAddr.addOffsetTo(osThreadThreadIDField.getOffset());
132
133 JVMDebugger debugger = VM.getVM().getDebugger();
134 return debugger.getThreadForIdentifierAddress(tidAddr);
135 }
136
137 }