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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/win32_ia64/Win32IA64JavaThreadPDAccess.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 2003 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.win32_ia64;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.debugger.ia64.*;
31 import sun.jvm.hotspot.runtime.*;
32 import sun.jvm.hotspot.runtime.ia64.*;
33 import sun.jvm.hotspot.types.*;
34 import sun.jvm.hotspot.utilities.*;
35
36 public class Win32IA64JavaThreadPDAccess implements JavaThreadPDAccess {
37 // private static AddressField lastJavaPCField;
38 // private static AddressField lastJavaFPField;
39 private static AddressField lastJavaIFrameField;
40 private static AddressField osThreadField;
41
42 // Field from OSThread
43 private static CIntegerField osThreadPThreadIDField;
44
45 // This is currently unneeded but is being kept in case we change
46 // the currentFrameGuess algorithm
47 private static final long GUESS_SCAN_RANGE = 128 * 1024;
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
60 lastJavaIFrameField = type.getAddressField("_last_Java_iframe");
61 osThreadField = type.getAddressField("_osthread");
62
63 type = db.lookupType("OSThread");
64 osThreadPThreadIDField = type.getCIntegerField("_pthread_id");
65 }
66
67 public Address getLastJavaIFrame(Address addr) {
68 return lastJavaIFrameField.getValue(addr);
69 }
70
71
72 public Address getBaseOfStackPointer(Address addr) {
73 return null;
74 }
75
76 public Address getLastJavaFP(Address addr) {
77 return null; // Not in 1.4.1
78 }
79
80 public Address getLastJavaPC(Address addr) {
81 return null; // Not in 1.4.1
82 }
83
84 public boolean isInterpretedFrame() {
85
86 // In 1.4.1 there are only interpreted frames
87 // and there is no pc
88 return true;
89 }
90
91 public Frame getLastFramePD(JavaThread thread, Address addr) {
92 // The thread is the JavaThread that contains "this"
93 // so we don't need any new accessor at the JavaThread level
94 Address iframe = getLastJavaIFrame(addr);
95 Address pc = thread.getLastJavaPC();
96 if (iframe == null) {
97 return null; // no information
98 }
99 return new IA64Frame(thread.getLastJavaSP(), iframe, pc);
100 }
101
102 public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) {
103 return new IA64RegisterMap(thread, updateMap);
104 }
105
106 public Frame getCurrentFrameGuess(JavaThread thread, Address addr) {
107 return getLastFramePD(thread, addr);
108 }
109
110 public void printThreadIDOn(Address addr, PrintStream tty) {
111 tty.print(getThreadProxy(addr));
112 }
113
114 public void printInfoOn(Address threadAddr, PrintStream tty) {
115 tty.print("Thread id: ");
116 printThreadIDOn(threadAddr, tty);
117 tty.println("\nLastJavaIFrame: " + getLastJavaIFrame(threadAddr));
118 }
119
120 public Address getLastSP(Address addr) {
121 ThreadProxy t = getThreadProxy(addr);
122 IA64ThreadContext context = (IA64ThreadContext) t.getContext();
123 return context.getRegisterAsAddress(IA64ThreadContext.SP);
124 }
125
126 public ThreadProxy getThreadProxy(Address addr) {
127 // Addr is the address of the JavaThread.
128 // Fetch the OSThread (for now and for simplicity, not making a
129 // separate "OSThread" class in this package)
130 Address osThreadAddr = osThreadField.getValue(addr);
131 // Get the address of the _pthread_id from the OSThread
132 Address pthreadIdAddr = osThreadAddr.addOffsetTo(osThreadPThreadIDField.getOffset());
133
134 JVMDebugger debugger = VM.getVM().getDebugger();
135 return debugger.getThreadForIdentifierAddress(pthreadIdAddr);
136 }
137 }