1 /*
2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 package sun.jvm.hotspot;
26
27 import java.io.BufferedOutputStream;
28 import java.io.BufferedReader;
29 import java.io.ByteArrayOutputStream;
30 import java.io.FileInputStream;
31 import java.io.FileOutputStream;
32 import java.io.IOException;
33 import java.io.InputStreamReader;
34 import java.io.PrintStream;
35 import java.util.ArrayList;
36 import java.util.Arrays;
37 import java.util.Comparator;
38 import java.util.HashMap;
39 import java.util.HashSet;
40 import java.util.Iterator;
41 import java.util.Stack;
42 import java.util.regex.Matcher;
43 import java.util.regex.Pattern;
44
45 import sun.jvm.hotspot.ci.ciEnv;
46 import sun.jvm.hotspot.code.CodeBlob;
47 import sun.jvm.hotspot.code.CodeCacheVisitor;
48 import sun.jvm.hotspot.code.NMethod;
49 import sun.jvm.hotspot.debugger.Address;
50 import sun.jvm.hotspot.debugger.OopHandle;
51 import sun.jvm.hotspot.memory.SymbolTable;
52 import sun.jvm.hotspot.memory.SystemDictionary;
53 import sun.jvm.hotspot.memory.Universe;
54 import sun.jvm.hotspot.oops.DefaultHeapVisitor;
55 import sun.jvm.hotspot.oops.HeapVisitor;
56 import sun.jvm.hotspot.oops.InstanceKlass;
57 import sun.jvm.hotspot.oops.Klass;
58 import sun.jvm.hotspot.oops.Metadata;
59 import sun.jvm.hotspot.oops.Method;
60 import sun.jvm.hotspot.oops.MethodData;
61 import sun.jvm.hotspot.oops.Oop;
62 import sun.jvm.hotspot.oops.RawHeapVisitor;
63 import sun.jvm.hotspot.oops.Symbol;
64 import sun.jvm.hotspot.oops.UnknownOopException;
65 import sun.jvm.hotspot.opto.Compile;
66 import sun.jvm.hotspot.opto.InlineTree;
67 import sun.jvm.hotspot.runtime.CompiledVFrame;
68 import sun.jvm.hotspot.runtime.CompilerThread;
69 import sun.jvm.hotspot.runtime.JavaThread;
70 import sun.jvm.hotspot.runtime.JavaVFrame;
71 import sun.jvm.hotspot.runtime.Threads;
72 import sun.jvm.hotspot.runtime.VM;
73 import sun.jvm.hotspot.tools.ObjectHistogram;
74 import sun.jvm.hotspot.tools.PMap;
75 import sun.jvm.hotspot.tools.PStack;
76 import sun.jvm.hotspot.tools.StackTrace;
77 import sun.jvm.hotspot.tools.jcore.ClassDump;
78 import sun.jvm.hotspot.tools.jcore.ClassFilter;
79 import sun.jvm.hotspot.types.CIntegerType;
80 import sun.jvm.hotspot.types.Field;
81 import sun.jvm.hotspot.types.Type;
82 import sun.jvm.hotspot.types.basic.BasicType;
83 import sun.jvm.hotspot.ui.classbrowser.HTMLGenerator;
84 import sun.jvm.hotspot.ui.tree.CTypeTreeNodeAdapter;
85 import sun.jvm.hotspot.ui.tree.OopTreeNodeAdapter;
86 import sun.jvm.hotspot.ui.tree.SimpleTreeNode;
87 import sun.jvm.hotspot.utilities.AddressOps;
88 import sun.jvm.hotspot.utilities.Assert;
89 import sun.jvm.hotspot.utilities.HeapProgressThunk;
90 import sun.jvm.hotspot.utilities.LivenessPathElement;
91 import sun.jvm.hotspot.utilities.MethodArray;
92 import sun.jvm.hotspot.utilities.ObjectReader;
93 import sun.jvm.hotspot.utilities.PointerFinder;
94 import sun.jvm.hotspot.utilities.PointerLocation;
95 import sun.jvm.hotspot.utilities.ReversePtrs;
96 import sun.jvm.hotspot.utilities.ReversePtrsAnalysis;
97 import sun.jvm.hotspot.utilities.RobustOopDeterminator;
98 import sun.jvm.hotspot.utilities.SystemDictionaryHelper;
99 import sun.jvm.hotspot.utilities.soql.JSJavaFactory;
100 import sun.jvm.hotspot.utilities.soql.JSJavaFactoryImpl;
101 import sun.jvm.hotspot.utilities.soql.JSJavaScriptEngine;
102
103 public class CommandProcessor {
104
105 volatile boolean quit;
106
107 public abstract static class DebuggerInterface {
108 public abstract HotSpotAgent getAgent();
109 public abstract boolean isAttached();
110 public abstract void attach(String pid);
111 public abstract void attach(String java, String core);
112 public abstract void detach();
113 public abstract void reattach();
114 }
115
116 public static class BootFilter implements ClassFilter {
117 public boolean canInclude(InstanceKlass kls) {
118 return kls.getClassLoader() == null;
119 }
120 }
121
122 public static class NonBootFilter implements ClassFilter {
123 private HashMap emitted = new HashMap();
124 public boolean canInclude(InstanceKlass kls) {
125 if (kls.getClassLoader() == null) return false;
126 if (emitted.get(kls.getName()) != null) {
127 // Since multiple class loaders are being shoved
128 // together duplicate classes are a possibilty. For
129 // now just ignore them.
130 return false;
131 }
132 emitted.put(kls.getName(), kls);
133 return true;
134 }
135 }
136
137 static class Tokens {
138 final String input;
139 int i;
140 String[] tokens;
141 int length;
142
143 String[] splitWhitespace(String cmd) {
144 String[] t = cmd.split("\\s");
145 if (t.length == 1 && t[0].length() == 0) {
146 return new String[0];
147 }
148 return t;
149 }
150
151 void add(String s, ArrayList t) {
152 if (s.length() > 0) {
153 t.add(s);
154 }
155 }
156
157 Tokens(String cmd) {
158 input = cmd;
159
160 // check for quoting
161 int quote = cmd.indexOf('"');
162 ArrayList t = new ArrayList();
163 if (quote != -1) {
164 while (cmd.length() > 0) {
165 if (quote != -1) {
166 int endquote = cmd.indexOf('"', quote + 1);
167 if (endquote == -1) {
168 throw new RuntimeException("mismatched quotes: " + input);
169 }
170
171 String before = cmd.substring(0, quote).trim();
172 String quoted = cmd.substring(quote + 1, endquote);
173 cmd = cmd.substring(endquote + 1).trim();
174 if (before.length() > 0) {
175 String[] w = splitWhitespace(before);
176 for (int i = 0; i < w.length; i++) {
177 add(w[i], t);
178 }
179 }
180 add(quoted, t);
181 quote = cmd.indexOf('"');
182 } else {
183 String[] w = splitWhitespace(cmd);
184 for (int i = 0; i < w.length; i++) {
185 add(w[i], t);
186 }
187 cmd = "";
188
189 }
190 }
191 } else {
192 String[] w = splitWhitespace(cmd);
193 for (int i = 0; i < w.length; i++) {
194 add(w[i], t);
195 }
196 }
197 tokens = (String[])t.toArray(new String[0]);
198 i = 0;
199 length = tokens.length;
200
201 //for (int i = 0; i < tokens.length; i++) {
202 // System.out.println("\"" + tokens[i] + "\"");
203 //}
204 }
205
206 String nextToken() {
207 return tokens[i++];
208 }
209 boolean hasMoreTokens() {
210 return i < length;
211 }
212 int countTokens() {
213 return length - i;
214 }
215 void trim(int n) {
216 if (length >= n) {
217 length -= n;
218 } else {
219 throw new IndexOutOfBoundsException(String.valueOf(n));
220 }
221 }
222 String join(String sep) {
223 StringBuffer result = new StringBuffer();
224 for (int w = i; w < length; w++) {
225 result.append(tokens[w]);
226 if (w + 1 < length) {
227 result.append(sep);
228 }
229 }
230 return result.toString();
231 }
232
233 String at(int i) {
234 if (i < 0 || i >= length) {
235 throw new IndexOutOfBoundsException(String.valueOf(i));
236 }
237 return tokens[i];
238 }
239 }
240
241
242 abstract class Command {
243 Command(String n, String u, boolean ok) {
244 name = n;
245 usage = u;
246 okIfDisconnected = ok;
247 }
248
249 Command(String n, boolean ok) {
250 name = n;
251 usage = n;
252 okIfDisconnected = ok;
253 }
254
255 final String name;
256 final String usage;
257 final boolean okIfDisconnected;
258 abstract void doit(Tokens t);
259 void usage() {
260 out.println("Usage: " + usage);
261 }
262
263 void printOopValue(Oop oop) {
264 if (oop != null) {
265 Klass k = oop.getKlass();
266 Symbol s = k.getName();
267 if (s != null) {
268 out.print("Oop for " + s.asString() + " @ ");
269 } else {
270 out.print("Oop @ ");
271 }
272 Oop.printOopAddressOn(oop, out);
273 } else {
274 out.print("null");
275 }
276 }
277
278 void printNode(SimpleTreeNode node) {
279 int count = node.getChildCount();
280 for (int i = 0; i < count; i++) {
281 try {
282 SimpleTreeNode field = node.getChild(i);
283 if (field instanceof OopTreeNodeAdapter) {
284 out.print(field);
285 out.print(" ");
286 printOopValue(((OopTreeNodeAdapter)field).getOop());
287 out.println();
288 } else {
289 out.println(field);
290 }
291 } catch (Exception e) {
292 out.println();
293 out.println("Error: " + e);
294 if (verboseExceptions) {
295 e.printStackTrace(out);
296 }
297 }
298 }
299 }
300 }
301
302 void quote(String s) {
303 if (s.indexOf(" ") == -1) {
304 out.print(s);
305 } else {
306 out.print("\"");
307 out.print(s);
308 out.print("\"");
309 }
310 }
311
312 void dumpType(Type type) {
313 out.print("type ");
314 quote(type.getName());
315 out.print(" ");
316 if (type.getSuperclass() != null) {
317 quote(type.getSuperclass().getName());
318 out.print(" ");
319 } else {
320 out.print("null ");
321 }
322 out.print(type.isOopType());
323 out.print(" ");
324 if (type.isCIntegerType()) {
325 out.print("true ");
326 out.print(((CIntegerType)type).isUnsigned());
327 out.print(" ");
328 } else {
329 out.print("false false ");
330 }
331 out.print(type.getSize());
332 out.println();
333 }
334
335 void dumpFields(Type type) {
336 dumpFields(type, true);
337 }
338
339 void dumpFields(Type type, boolean allowStatic) {
340 Iterator i = type.getFields();
341 while (i.hasNext()) {
342 Field f = (Field) i.next();
343 if (!allowStatic && f.isStatic()) continue;
344 out.print("field ");
345 quote(type.getName());
346 out.print(" ");
347 out.print(f.getName());
348 out.print(" ");
349 quote(f.getType().getName());
350 out.print(" ");
351 out.print(f.isStatic());
352 out.print(" ");
353 if (f.isStatic()) {
354 out.print("0 ");
355 out.print(f.getStaticFieldAddress());
356 } else {
357 out.print(f.getOffset());
358 out.print(" 0x0");
359 }
360 out.println();
361 }
362 }
363
364
365 Address lookup(String symbol) {
366 if (symbol.indexOf("::") != -1) {
367 String[] parts = symbol.split("::");
368 StringBuffer mangled = new StringBuffer("__1c");
369 for (int i = 0; i < parts.length; i++) {
370 int len = parts[i].length();
371 if (len >= 26) {
372 mangled.append((char)('a' + (len / 26)));
373 len = len % 26;
374 }
375 mangled.append((char)('A' + len));
376 mangled.append(parts[i]);
377 }
378 mangled.append("_");
379 symbol = mangled.toString();
380 }
381 return VM.getVM().getDebugger().lookup(null, symbol);
382 }
383
384 Address parseAddress(String addr) {
385 return VM.getVM().getDebugger().parseAddress(addr);
386 }
387
388 private final Command[] commandList = {
389 new Command("reattach", true) {
390 public void doit(Tokens t) {
391 int tokens = t.countTokens();
392 if (tokens != 0) {
393 usage();
394 return;
395 }
396 preAttach();
397 debugger.reattach();
398 postAttach();
399 }
400 },
401 new Command("attach", "attach pid | exec core", true) {
402 public void doit(Tokens t) {
403 int tokens = t.countTokens();
404 if (tokens == 1) {
405 preAttach();
406 debugger.attach(t.nextToken());
407 postAttach();
408 } else if (tokens == 2) {
409 preAttach();
410 debugger.attach(t.nextToken(), t.nextToken());
411 postAttach();
412 } else {
413 usage();
414 }
415 }
416 },
417 new Command("detach", false) {
418 public void doit(Tokens t) {
419 if (t.countTokens() != 0) {
420 usage();
421 } else {
422 debugger.detach();
423 }
424 }
425 },
426 new Command("examine", "examine [ address/count ] | [ address,address]", false) {
427 Pattern args1 = Pattern.compile("^(0x[0-9a-f]+)(/([0-9]*)([a-z]*))?$");
428 Pattern args2 = Pattern.compile("^(0x[0-9a-f]+),(0x[0-9a-f]+)(/[a-z]*)?$");
429
430 String fill(Address a, int width) {
431 String s = "0x0";
432 if (a != null) {
433 s = a.toString();
434 }
435 if (s.length() != width) {
436 return s.substring(0, 2) + "000000000000000000000".substring(0, width - s.length()) + s.substring(2);
437 }
438 return s;
439 }
440
441 public void doit(Tokens t) {
442 if (t.countTokens() != 1) {
443 usage();
444 } else {
445 String arg = t.nextToken();
446 Matcher m1 = args1.matcher(arg);
447 Matcher m2 = args2.matcher(arg);
448 Address start = null;
449 Address end = null;
450 String format = "";
451 int formatSize = (int)VM.getVM().getAddressSize();
452
453 if (m1.matches()) {
454 start = VM.getVM().getDebugger().parseAddress(m1.group(1));
455 int count = 1;
456 if (m1.group(2) != null) {
457 count = Integer.parseInt(m1.group(3));
458 }
459 end = start.addOffsetTo(count * formatSize);
460 } else if (m2.matches()) {
461 start = VM.getVM().getDebugger().parseAddress(m2.group(1));
462 end = VM.getVM().getDebugger().parseAddress(m2.group(2));
463 } else {
464 usage();
465 return;
466 }
467 int line = 80;
468 int formatWidth = formatSize * 8 / 4 + 2;
469
470 out.print(fill(start, formatWidth));
471 out.print(": ");
472 int width = line - formatWidth - 2;
473
474 boolean needsPrintln = true;
475 while (start != null && start.lessThan(end)) {
476 Address val = start.getAddressAt(0);
477 out.print(fill(val, formatWidth));
478 needsPrintln = true;
479 width -= formatWidth;
480 start = start.addOffsetTo(formatSize);
481 if (width <= formatWidth) {
482 out.println();
483 needsPrintln = false;
484 if (start.lessThan(end)) {
485 out.print(fill(start, formatWidth));
486 out.print(": ");
487 width = line - formatWidth - 2;
488 }
489 } else {
490 out.print(" ");
491 width -= 1;
492 }
493 }
494 if (needsPrintln) {
495 out.println();
496 }
497 }
498 }
499 },
500 new Command("dumpreplaydata", "dumpreplaydata { <address > | -a | <thread_id> }", false) {
501 // This is used to dump replay data from ciInstanceKlass, ciMethodData etc
502 // default file name is replay.txt, also if java crashes in compiler
503 // thread, this file will be dumped in error processing.
504 public void doit(Tokens t) {
505 if (t.countTokens() != 1) {
506 usage();
507 return;
508 }
509 String name = t.nextToken();
510 Address a = null;
511 try {
512 a = VM.getVM().getDebugger().parseAddress(name);
513 } catch (NumberFormatException e) { }
514 if (a != null) {
515 // only nmethod, Method, MethodData and InstanceKlass needed to
516 // dump replay data
517
518 CodeBlob cb = VM.getVM().getCodeCache().findBlob(a);
519 if (cb != null && (cb instanceof NMethod)) {
520 ((NMethod)cb).dumpReplayData(out);
521 return;
522 }
523 // assume it is Metadata
524 Metadata meta = Metadata.instantiateWrapperFor(a);
525 if (meta != null) {
526 meta.dumpReplayData(out);
527 } else {
528 usage();
529 return;
530 }
531 }
532 // Not an address
533 boolean all = name.equals("-a");
534 Threads threads = VM.getVM().getThreads();
535 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
536 ByteArrayOutputStream bos = new ByteArrayOutputStream();
537 thread.printThreadIDOn(new PrintStream(bos));
538 if (all || bos.toString().equals(name)) {
539 if (thread instanceof CompilerThread) {
540 CompilerThread ct = (CompilerThread)thread;
541 ciEnv env = ct.env();
542 if (env != null) {
543 env.dumpReplayData(out);
544 }
545 }
546 }
547 }
548 }
549 },
550 new Command("buildreplayjars", "buildreplayjars [ all | app | boot ] | [ prefix ]", false) {
551 // This is used to dump jar files of all the classes
552 // loaded in the core. Everything on the bootclasspath
553 // will go in boot.jar and everything else will go in
554 // app.jar. Then the classes can be loaded by the replay
555 // jvm using -Xbootclasspath/p:boot.jar -cp app.jar. boot.jar usually
556 // not needed, unless changed by jvmti.
557 public void doit(Tokens t) {
558 int tcount = t.countTokens();
559 if (tcount > 2) {
560 usage();
561 return;
562 }
563 try {
564 String prefix = "";
565 String option = "all"; // default
566 switch(tcount) {
567 case 0:
568 break;
569 case 1:
570 option = t.nextToken();
571 if (!option.equalsIgnoreCase("all") && !option.equalsIgnoreCase("app") &&
572 !option.equalsIgnoreCase("root")) {
573 prefix = option;
574 option = "all";
575 }
576 break;
577 case 2:
578 option = t.nextToken();
579 prefix = t.nextToken();
580 break;
581 default:
582 usage();
583 return;
584 }
585 if (!option.equalsIgnoreCase("all") && !option.equalsIgnoreCase("app") &&
586 !option.equalsIgnoreCase("boot")) {
587 usage();
588 return;
589 }
590 ClassDump cd = new ClassDump();
591 if (option.equalsIgnoreCase("all") || option.equalsIgnoreCase("boot")) {
592 cd.setClassFilter(new BootFilter());
593 cd.setJarOutput(prefix + "boot.jar");
594 cd.run();
595 }
596 if (option.equalsIgnoreCase("all") || option.equalsIgnoreCase("app")) {
597 cd.setClassFilter(new NonBootFilter());
598 cd.setJarOutput(prefix + "app.jar");
599 cd.run();
600 }
601 } catch (IOException ioe) {
602 ioe.printStackTrace();
603 }
604 }
605 },
606 new Command("findpc", "findpc address", false) {
607 public void doit(Tokens t) {
608 if (t.countTokens() != 1) {
609 usage();
610 } else {
611 Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
612 PointerLocation loc = PointerFinder.find(a);
613 loc.printOn(out);
614 }
615 }
616 },
617 new Command("symbol", "symbol address", false) {
618 public void doit(Tokens t) {
619 if (t.countTokens() != 1) {
620 usage();
621 } else {
622 Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
623 Symbol.create(a).printValueOn(out);
624 out.println();
625 }
626 }
627 },
628 new Command("symboltable", "symboltable name", false) {
629 public void doit(Tokens t) {
630 if (t.countTokens() != 1) {
631 usage();
632 } else {
633 out.println(SymbolTable.getTheTable().probe(t.nextToken()));
634 }
635 }
636 },
637 new Command("symboldump", "symboldump", false) {
638 public void doit(Tokens t) {
639 SymbolTable.getTheTable().symbolsDo(new SymbolTable.SymbolVisitor() {
640 public void visit(Symbol sym) {
641 sym.printValueOn(out);
642 out.println();
643 }
644 });
645 }
646 },
647 new Command("flags", "flags [ flag | -nd ]", false) {
648 public void doit(Tokens t) {
649 int tokens = t.countTokens();
650 if (tokens != 0 && tokens != 1) {
651 usage();
652 } else {
653 String name = tokens > 0 ? t.nextToken() : null;
654 boolean nonDefault = false;
655 if (name != null && name.equals("-nd")) {
656 name = null;
657 nonDefault = true;
658 }
659
660 VM.Flag[] flags = VM.getVM().getCommandLineFlags();
661 if (flags == null) {
662 out.println("Command Flag info not available (use 1.4.1_03 or later)!");
663 } else {
664 boolean printed = false;
665 for (int f = 0; f < flags.length; f++) {
666 VM.Flag flag = flags[f];
667 if (name == null || flag.getName().equals(name)) {
668
669 if (nonDefault && flag.getOrigin() == 0) {
670 // only print flags which aren't their defaults
671 continue;
672 }
673 out.println(flag.getName() + " = " + flag.getValue() + " " + flag.getOrigin());
674 printed = true;
675 }
676 }
677 if (name != null && !printed) {
678 out.println("Couldn't find flag: " + name);
679 }
680 }
681 }
682 }
683 },
684 new Command("help", "help [ command ]", true) {
685 public void doit(Tokens t) {
686 int tokens = t.countTokens();
687 Command cmd = null;
688 if (tokens == 1) {
689 cmd = findCommand(t.nextToken());
690 }
691
692 if (cmd != null) {
693 cmd.usage();
694 } else if (tokens == 0) {
695 out.println("Available commands:");
696 Object[] keys = commands.keySet().toArray();
697 Arrays.sort(keys, new Comparator() {
698 public int compare(Object o1, Object o2) {
699 return o1.toString().compareTo(o2.toString());
700 }
701 });
702 for (int i = 0; i < keys.length; i++) {
703 out.print(" ");
704 out.println(((Command)commands.get(keys[i])).usage);
705 }
706 }
707 }
708 },
709 new Command("history", "history", true) {
710 public void doit(Tokens t) {
711 int tokens = t.countTokens();
712 if (tokens != 0 && (tokens != 1 || !t.nextToken().equals("-h"))) {
713 usage();
714 return;
715 }
716 boolean printIndex = tokens == 0;
717 for (int i = 0; i < history.size(); i++) {
718 if (printIndex) out.print(i + " ");
719 out.println(history.get(i));
720 }
721 }
722 },
723 // decode raw address
724 new Command("dis", "dis address [length]", false) {
725 public void doit(Tokens t) {
726 int tokens = t.countTokens();
727 if (tokens != 1 && tokens != 2) {
728 usage();
729 return;
730 }
731 String name = t.nextToken();
732 Address addr = null;
733 int len = 0x10; // default length
734 try {
735 addr = VM.getVM().getDebugger().parseAddress(name);
736 } catch (NumberFormatException e) {
737 out.println(e);
738 return;
739 }
740 if (tokens == 2) {
741 try {
742 len = Integer.parseInt(t.nextToken());
743 } catch (NumberFormatException e) {
744 out.println(e);
745 return;
746 }
747 }
748 HTMLGenerator generator = new HTMLGenerator(false);
749 out.println(generator.genHTMLForRawDisassembly(addr, len));
750 }
751
752 },
753 // decode codeblob or nmethod
754 new Command("disassemble", "disassemble address", false) {
755 public void doit(Tokens t) {
756 int tokens = t.countTokens();
757 if (tokens != 1) {
758 usage();
759 return;
760 }
761 String name = t.nextToken();
762 Address addr = null;
763 try {
764 addr = VM.getVM().getDebugger().parseAddress(name);
765 } catch (NumberFormatException e) {
766 out.println(e);
767 return;
768 }
769
770 HTMLGenerator generator = new HTMLGenerator(false);
771 out.println(generator.genHTML(addr));
772 }
773 },
774 // print Java bytecode disassembly
775 new Command("jdis", "jdis address", false) {
776 public void doit(Tokens t) {
777 int tokens = t.countTokens();
778 if (tokens != 1) {
779 usage();
780 return;
781 }
782 Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
783 Method m = (Method)Metadata.instantiateWrapperFor(a);
784 HTMLGenerator html = new HTMLGenerator(false);
785 out.println(html.genHTML(m));
786 }
787 },
788 new Command("revptrs", "revptrs address", false) {
789 public void doit(Tokens t) {
790 int tokens = t.countTokens();
791 if (tokens != 1 && (tokens != 2 || !t.nextToken().equals("-c"))) {
792 usage();
793 return;
794 }
795 boolean chase = tokens == 2;
796 ReversePtrs revptrs = VM.getVM().getRevPtrs();
797 if (revptrs == null) {
798 out.println("Computing reverse pointers...");
799 ReversePtrsAnalysis analysis = new ReversePtrsAnalysis();
800 final boolean[] complete = new boolean[1];
801 HeapProgressThunk thunk = new HeapProgressThunk() {
802 public void heapIterationFractionUpdate(double d) {}
803 public synchronized void heapIterationComplete() {
804 complete[0] = true;
805 notify();
806 }
807 };
808 analysis.setHeapProgressThunk(thunk);
809 analysis.run();
810 while (!complete[0]) {
811 synchronized (thunk) {
812 try {
813 thunk.wait();
814 } catch (Exception e) {
815 }
816 }
817 }
818 revptrs = VM.getVM().getRevPtrs();
819 out.println("Done.");
820 }
821 Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
822 if (VM.getVM().getUniverse().heap().isInReserved(a)) {
823 OopHandle handle = a.addOffsetToAsOopHandle(0);
824 Oop oop = VM.getVM().getObjectHeap().newOop(handle);
825 ArrayList ptrs = revptrs.get(oop);
826 if (ptrs == null) {
827 out.println("no live references to " + a);
828 } else {
829 if (chase) {
830 while (ptrs.size() == 1) {
831 LivenessPathElement e = (LivenessPathElement)ptrs.get(0);
832 ByteArrayOutputStream bos = new ByteArrayOutputStream();
833 Oop.printOopValueOn(e.getObj(), new PrintStream(bos));
834 out.println(bos.toString());
835 ptrs = revptrs.get(e.getObj());
836 }
837 } else {
838 for (int i = 0; i < ptrs.size(); i++) {
839 LivenessPathElement e = (LivenessPathElement)ptrs.get(i);
840 ByteArrayOutputStream bos = new ByteArrayOutputStream();
841 Oop.printOopValueOn(e.getObj(), new PrintStream(bos));
842 out.println(bos.toString());
843 oop = e.getObj();
844 }
845 }
846 }
847 }
848 }
849 },
850 new Command("printmdo", "printmdo [ -a | expression ]", false) {
851 // Print every MDO in the heap or the one referenced by expression.
852 public void doit(Tokens t) {
853 if (t.countTokens() != 1) {
854 usage();
855 } else {
856 String s = t.nextToken();
857 if (s.equals("-a")) {
858 SystemDictionary sysDict = VM.getVM().getSystemDictionary();
859 sysDict.allClassesDo(new SystemDictionary.ClassVisitor() {
860 public void visit(Klass k) {
861 if (k instanceof InstanceKlass) {
862 MethodArray methods = ((InstanceKlass)k).getMethods();
863 for (int i = 0; i < methods.length(); i++) {
864 Method m = methods.at(i);
865 MethodData mdo = m.getMethodData();
866 if (mdo != null) {
867 out.println("MethodData " + mdo.getAddress() + " for " +
868 "method " + m.getMethodHolder().getName().asString() + "." +
869 m.getName().asString() +
870 m.getSignature().asString() + "@" + m.getAddress());
871 mdo.printDataOn(out);
872 }
873 }
874 }
875 }
876 }
877 );
878 } else {
879 Address a = VM.getVM().getDebugger().parseAddress(s);
880 MethodData mdo = (MethodData) Metadata.instantiateWrapperFor(a);
881 mdo.printDataOn(out);
882 }
883 }
884 }
885 },
886 new Command("printall", "printall", false) {
887 // Print every MDO in the heap or the one referenced by expression.
888 public void doit(Tokens t) {
889 if (t.countTokens() != 0) {
890 usage();
891 } else {
892 SystemDictionary sysDict = VM.getVM().getSystemDictionary();
893 sysDict.allClassesDo(new SystemDictionary.ClassVisitor() {
894 public void visit(Klass k) {
895 if (k instanceof InstanceKlass && ((InstanceKlass)k).getConstants().getCache() != null) {
896 MethodArray methods = ((InstanceKlass)k).getMethods();
897 for (int i = 0; i < methods.length(); i++) {
898 Method m = methods.at(i);
899 HTMLGenerator gen = new HTMLGenerator(false);
900 out.println(gen.genHTML(m));
901 }
902 }
903 }
904 }
905 );
906 }
907 }
908 },
909 new Command("dumpideal", "dumpideal { -a | id }", false) {
910 // Do a full dump of the nodes reachabile from root in each compiler thread.
911 public void doit(Tokens t) {
912 if (t.countTokens() != 1) {
913 usage();
914 } else {
915 String name = t.nextToken();
916 boolean all = name.equals("-a");
917 Threads threads = VM.getVM().getThreads();
918 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
919 ByteArrayOutputStream bos = new ByteArrayOutputStream();
920 thread.printThreadIDOn(new PrintStream(bos));
921 if (all || bos.toString().equals(name)) {
922 if (thread instanceof CompilerThread) {
923 CompilerThread ct = (CompilerThread)thread;
924 out.println(ct);
925 ciEnv env = ct.env();
926 if (env != null) {
927 Compile c = env.compilerData();
928 c.root().dump(9999, out);
929 } else {
930 out.println(" not compiling");
931 }
932 }
933 }
934 }
935 }
936 }
937 },
938 new Command("dumpcfg", "dumpcfg { -a | id }", false) {
939 // Dump the PhaseCFG for every compiler thread that has one live.
940 public void doit(Tokens t) {
941 if (t.countTokens() != 1) {
942 usage();
943 } else {
944 String name = t.nextToken();
945 boolean all = name.equals("-a");
946 Threads threads = VM.getVM().getThreads();
947 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
948 ByteArrayOutputStream bos = new ByteArrayOutputStream();
949 thread.printThreadIDOn(new PrintStream(bos));
950 if (all || bos.toString().equals(name)) {
951 if (thread instanceof CompilerThread) {
952 CompilerThread ct = (CompilerThread)thread;
953 out.println(ct);
954 ciEnv env = ct.env();
955 if (env != null) {
956 Compile c = env.compilerData();
957 c.cfg().dump(out);
958 }
959 }
960 }
961 }
962 }
963 }
964 },
965 new Command("dumpilt", "dumpilt { -a | id }", false) {
966 // dumps the InlineTree of a C2 compile
967 public void doit(Tokens t) {
968 if (t.countTokens() != 1) {
969 usage();
970 } else {
971 String name = t.nextToken();
972 boolean all = name.equals("-a");
973 Threads threads = VM.getVM().getThreads();
974 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
975 ByteArrayOutputStream bos = new ByteArrayOutputStream();
976 thread.printThreadIDOn(new PrintStream(bos));
977 if (all || bos.toString().equals(name)) {
978 if (thread instanceof CompilerThread) {
979 CompilerThread ct = (CompilerThread)thread;
980 ciEnv env = ct.env();
981 if (env != null) {
982 Compile c = env.compilerData();
983 InlineTree ilt = c.ilt();
984 if (ilt != null) {
985 ilt.print(out);
986 }
987 }
988 }
989 }
990 }
991 }
992 }
993 },
994 new Command("vmstructsdump", "vmstructsdump", false) {
995 public void doit(Tokens t) {
996 if (t.countTokens() != 0) {
997 usage();
998 return;
999 }
1000
1001 // Dump a copy of the type database in a form that can
1002 // be read back.
1003 Iterator i = agent.getTypeDataBase().getTypes();
1004 // Make sure the types are emitted in an order than can be read back in
1005 HashSet emitted = new HashSet();
1006 Stack pending = new Stack();
1007 while (i.hasNext()) {
1008 Type n = (Type)i.next();
1009 if (emitted.contains(n.getName())) {
1010 continue;
1011 }
1012
1013 while (n != null && !emitted.contains(n.getName())) {
1014 pending.push(n);
1015 n = n.getSuperclass();
1016 }
1017 while (!pending.empty()) {
1018 n = (Type)pending.pop();
1019 dumpType(n);
1020 emitted.add(n.getName());
1021 }
1022 }
1023 i = agent.getTypeDataBase().getTypes();
1024 while (i.hasNext()) {
1025 dumpFields((Type)i.next(), false);
1026 }
1027 }
1028 },
1029
1030 new Command("inspect", "inspect expression", false) {
1031 public void doit(Tokens t) {
1032 if (t.countTokens() != 1) {
1033 usage();
1034 } else {
1035 Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
1036 SimpleTreeNode node = null;
1037 if (VM.getVM().getUniverse().heap().isInReserved(a)) {
1038 OopHandle handle = a.addOffsetToAsOopHandle(0);
1039 Oop oop = VM.getVM().getObjectHeap().newOop(handle);
1040 node = new OopTreeNodeAdapter(oop, null);
1041
1042 out.println("instance of " + node.getValue() + " @ " + a +
1043 " (size = " + oop.getObjectSize() + ")");
1044 } else if (VM.getVM().getCodeCache().contains(a)) {
1045 CodeBlob blob = VM.getVM().getCodeCache().findBlobUnsafe(a);
1046 a = blob.headerBegin();
1047 }
1048 if (node == null) {
1049 Type type = VM.getVM().getTypeDataBase().guessTypeForAddress(a);
1050 if (type != null) {
1051 out.println("Type is " + type.getName() + " (size of " + type.getSize() + ")");
1052 node = new CTypeTreeNodeAdapter(a, type, null);
1053 }
1054 }
1055 if (node != null) {
1056 printNode(node);
1057 }
1058 }
1059 }
1060 },
1061 new Command("jhisto", "jhisto", false) {
1062 public void doit(Tokens t) {
1063 ObjectHistogram histo = new ObjectHistogram();
1064 histo.run(out, err);
1065 }
1066 },
1067 new Command("jstack", "jstack [-v]", false) {
1068 public void doit(Tokens t) {
1069 boolean verbose = false;
1070 if (t.countTokens() > 0 && t.nextToken().equals("-v")) {
1071 verbose = true;
1072 }
1073 StackTrace jstack = new StackTrace(verbose, true);
1074 jstack.run(out);
1075 }
1076 },
1077 new Command("print", "print expression", false) {
1078 public void doit(Tokens t) {
1079 if (t.countTokens() != 1) {
1080 usage();
1081 } else {
1082 Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
1083 HTMLGenerator gen = new HTMLGenerator(false);
1084 out.println(gen.genHTML(a));
1085 }
1086 }
1087 },
1088 new Command("printas", "printas type expression", false) {
1089 public void doit(Tokens t) {
1090 if (t.countTokens() != 2) {
1091 usage();
1092 } else {
1093 Type type = agent.getTypeDataBase().lookupType(t.nextToken());
1094 Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
1095 CTypeTreeNodeAdapter node = new CTypeTreeNodeAdapter(a, type, null);
1096
1097 out.println("pointer to " + type + " @ " + a +
1098 " (size = " + type.getSize() + ")");
1099 printNode(node);
1100 }
1101 }
1102 },
1103 new Command("printstatics", "printstatics [ type ]", false) {
1104 public void doit(Tokens t) {
1105 if (t.countTokens() > 1) {
1106 usage();
1107 } else {
1108 if (t.countTokens() == 0) {
1109 out.println("All known static fields");
1110 printNode(new CTypeTreeNodeAdapter(agent.getTypeDataBase().getTypes()));
1111 } else {
1112 Type type = agent.getTypeDataBase().lookupType(t.nextToken());
1113 out.println("Static fields of " + type.getName());
1114 printNode(new CTypeTreeNodeAdapter(type));
1115 }
1116 }
1117 }
1118 },
1119 new Command("pmap", "pmap", false) {
1120 public void doit(Tokens t) {
1121 PMap pmap = new PMap();
1122 pmap.run(out, debugger.getAgent().getDebugger());
1123 }
1124 },
1125 new Command("pstack", "pstack [-v]", false) {
1126 public void doit(Tokens t) {
1127 boolean verbose = false;
1128 if (t.countTokens() > 0 && t.nextToken().equals("-v")) {
1129 verbose = true;
1130 }
1131 PStack pstack = new PStack(verbose, true);
1132 pstack.run(out, debugger.getAgent().getDebugger());
1133 }
1134 },
1135 new Command("quit", true) {
1136 public void doit(Tokens t) {
1137 if (t.countTokens() != 0) {
1138 usage();
1139 } else {
1140 debugger.detach();
1141 quit = true;
1142 }
1143 }
1144 },
1145 new Command("echo", "echo [ true | false ]", true) {
1146 public void doit(Tokens t) {
1147 if (t.countTokens() == 0) {
1148 out.println("echo is " + doEcho);
1149 } else if (t.countTokens() == 1) {
1150 doEcho = Boolean.valueOf(t.nextToken()).booleanValue();
1151 } else {
1152 usage();
1153 }
1154 }
1155 },
1156 new Command("versioncheck", "versioncheck [ true | false ]", true) {
1157 public void doit(Tokens t) {
1158 if (t.countTokens() == 0) {
1159 out.println("versioncheck is " +
1160 (System.getProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck") == null));
1161 } else if (t.countTokens() == 1) {
1162 if (Boolean.valueOf(t.nextToken()).booleanValue()) {
1163 System.setProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck", null);
1164 } else {
1165 System.setProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck", "true");
1166 }
1167 } else {
1168 usage();
1169 }
1170 }
1171 },
1172 new Command("scanoops", "scanoops start end [ type ]", false) {
1173 public void doit(Tokens t) {
1174 if (t.countTokens() != 2 && t.countTokens() != 3) {
1175 usage();
1176 } else {
1177 long stride = VM.getVM().getAddressSize();
1178 Address base = VM.getVM().getDebugger().parseAddress(t.nextToken());
1179 Address end = VM.getVM().getDebugger().parseAddress(t.nextToken());
1180 Klass klass = null;
1181 if (t.countTokens() == 1) {
1182 klass = SystemDictionaryHelper.findInstanceKlass(t.nextToken());
1183 if (klass == null) {
1184 out.println("No such type.");
1185 return;
1186 }
1187 }
1188 while (base != null && base.lessThan(end)) {
1189 long step = stride;
1190 OopHandle handle = base.addOffsetToAsOopHandle(0);
1191 if (RobustOopDeterminator.oopLooksValid(handle)) {
1192 try {
1193 Oop oop = VM.getVM().getObjectHeap().newOop(handle);
1194 if (klass == null || oop.getKlass().isSubtypeOf(klass))
1195 out.println(handle.toString() + " " + oop.getKlass().getName().asString());
1196 step = oop.getObjectSize();
1197 } catch (UnknownOopException ex) {
1198 // ok
1199 } catch (RuntimeException ex) {
1200 ex.printStackTrace();
1201 }
1202 }
1203 base = base.addOffsetTo(step);
1204 }
1205 }
1206 }
1207 },
1208 new Command("intConstant", "intConstant [ name [ value ] ]", true) {
1209 public void doit(Tokens t) {
1210 if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 2) {
1211 usage();
1212 return;
1213 }
1214 HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
1215 if (t.countTokens() == 1) {
1216 String name = t.nextToken();
1217 out.println("intConstant " + name + " " + db.lookupIntConstant(name));
1218 } else if (t.countTokens() == 0) {
1219 Iterator i = db.getIntConstants();
1220 while (i.hasNext()) {
1221 String name = (String)i.next();
1222 out.println("intConstant " + name + " " + db.lookupIntConstant(name));
1223 }
1224 } else if (t.countTokens() == 2) {
1225 String name = t.nextToken();
1226 Integer value = Integer.valueOf(t.nextToken());
1227 db.addIntConstant(name, value);
1228 }
1229 }
1230 },
1231 new Command("longConstant", "longConstant [ name [ value ] ]", true) {
1232 public void doit(Tokens t) {
1233 if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 2) {
1234 usage();
1235 return;
1236 }
1237 HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
1238 if (t.countTokens() == 1) {
1239 String name = t.nextToken();
1240 out.println("longConstant " + name + " " + db.lookupLongConstant(name));
1241 } else if (t.countTokens() == 0) {
1242 Iterator i = db.getLongConstants();
1243 while (i.hasNext()) {
1244 String name = (String)i.next();
1245 out.println("longConstant " + name + " " + db.lookupLongConstant(name));
1246 }
1247 } else if (t.countTokens() == 2) {
1248 String name = t.nextToken();
1249 Long value = Long.valueOf(t.nextToken());
1250 db.addLongConstant(name, value);
1251 }
1252 }
1253 },
1254 new Command("field", "field [ type [ name fieldtype isStatic offset address ] ]", true) {
1255 public void doit(Tokens t) {
1256 if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 6) {
1257 usage();
1258 return;
1259 }
1260 if (t.countTokens() == 1) {
1261 Type type = agent.getTypeDataBase().lookupType(t.nextToken());
1262 dumpFields(type);
1263 } else if (t.countTokens() == 0) {
1264 Iterator i = agent.getTypeDataBase().getTypes();
1265 while (i.hasNext()) {
1266 dumpFields((Type)i.next());
1267 }
1268 } else {
1269 BasicType containingType = (BasicType)agent.getTypeDataBase().lookupType(t.nextToken());
1270
1271 String fieldName = t.nextToken();
1272
1273 // The field's Type must already be in the database -- no exceptions
1274 Type fieldType = agent.getTypeDataBase().lookupType(t.nextToken());
1275
1276 boolean isStatic = Boolean.valueOf(t.nextToken()).booleanValue();
1277 long offset = Long.parseLong(t.nextToken());
1278 Address staticAddress = parseAddress(t.nextToken());
1279 if (isStatic && staticAddress == null) {
1280 staticAddress = lookup(containingType.getName() + "::" + fieldName);
1281 }
1282
1283 // check to see if the field already exists
1284 Iterator i = containingType.getFields();
1285 while (i.hasNext()) {
1286 Field f = (Field) i.next();
1287 if (f.getName().equals(fieldName)) {
1288 if (f.isStatic() != isStatic) {
1289 throw new RuntimeException("static/nonstatic mismatch: " + t.input);
1290 }
1291 if (!isStatic) {
1292 if (f.getOffset() != offset) {
1293 throw new RuntimeException("bad redefinition of field offset: " + t.input);
1294 }
1295 } else {
1296 if (!f.getStaticFieldAddress().equals(staticAddress)) {
1297 throw new RuntimeException("bad redefinition of field location: " + t.input);
1298 }
1299 }
1300 if (f.getType() != fieldType) {
1301 throw new RuntimeException("bad redefinition of field type: " + t.input);
1302 }
1303 return;
1304 }
1305 }
1306
1307 // Create field by type
1308 HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
1309 db.createField(containingType,
1310 fieldName, fieldType,
1311 isStatic,
1312 offset,
1313 staticAddress);
1314
1315 }
1316 }
1317
1318 },
1319 new Command("tokenize", "tokenize ...", true) {
1320 public void doit(Tokens t) {
1321 while (t.hasMoreTokens()) {
1322 out.println("\"" + t.nextToken() + "\"");
1323 }
1324 }
1325 },
1326 new Command("type", "type [ type [ name super isOop isInteger isUnsigned size ] ]", true) {
1327 public void doit(Tokens t) {
1328 if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 6) {
1329 usage();
1330 return;
1331 }
1332 if (t.countTokens() == 6) {
1333 String typeName = t.nextToken();
1334 String superclassName = t.nextToken();
1335 if (superclassName.equals("null")) {
1336 superclassName = null;
1337 }
1338 boolean isOop = Boolean.valueOf(t.nextToken()).booleanValue();
1339 boolean isInteger = Boolean.valueOf(t.nextToken()).booleanValue();
1340 boolean isUnsigned = Boolean.valueOf(t.nextToken()).booleanValue();
1341 long size = Long.parseLong(t.nextToken());
1342
1343 BasicType type = null;
1344 try {
1345 type = (BasicType)agent.getTypeDataBase().lookupType(typeName);
1346 } catch (RuntimeException e) {
1347 }
1348 if (type != null) {
1349 if (type.isOopType() != isOop) {
1350 throw new RuntimeException("oop mismatch in type definition: " + t.input);
1351 }
1352 if (type.isCIntegerType() != isInteger) {
1353 throw new RuntimeException("integer type mismatch in type definition: " + t.input);
1354 }
1355 if (type.isCIntegerType() && (((CIntegerType)type).isUnsigned()) != isUnsigned) {
1356 throw new RuntimeException("unsigned mismatch in type definition: " + t.input);
1357 }
1358 if (type.getSuperclass() == null) {
1359 if (superclassName != null) {
1360 if (type.getSize() == -1) {
1361 type.setSuperclass(agent.getTypeDataBase().lookupType(superclassName));
1362 } else {
1363 throw new RuntimeException("unexpected superclass in type definition: " + t.input);
1364 }
1365 }
1366 } else {
1367 if (superclassName == null) {
1368 throw new RuntimeException("missing superclass in type definition: " + t.input);
1369 }
1370 if (!type.getSuperclass().getName().equals(superclassName)) {
1371 throw new RuntimeException("incorrect superclass in type definition: " + t.input);
1372 }
1373 }
1374 if (type.getSize() != size) {
1375 if (type.getSize() == -1) {
1376 type.setSize(size);
1377 }
1378 throw new RuntimeException("size mismatch in type definition: " + t.input);
1379 }
1380 return;
1381 }
1382
1383 // Create type
1384 HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
1385 db.createType(typeName, superclassName, isOop, isInteger, isUnsigned, size);
1386 } else if (t.countTokens() == 1) {
1387 Type type = agent.getTypeDataBase().lookupType(t.nextToken());
1388 dumpType(type);
1389 } else {
1390 Iterator i = agent.getTypeDataBase().getTypes();
1391 // Make sure the types are emitted in an order than can be read back in
1392 HashSet emitted = new HashSet();
1393 Stack pending = new Stack();
1394 while (i.hasNext()) {
1395 Type n = (Type)i.next();
1396 if (emitted.contains(n.getName())) {
1397 continue;
1398 }
1399
1400 while (n != null && !emitted.contains(n.getName())) {
1401 pending.push(n);
1402 n = n.getSuperclass();
1403 }
1404 while (!pending.empty()) {
1405 n = (Type)pending.pop();
1406 dumpType(n);
1407 emitted.add(n.getName());
1408 }
1409 }
1410 }
1411 }
1412
1413 },
1414 new Command("source", "source filename", true) {
1415 public void doit(Tokens t) {
1416 if (t.countTokens() != 1) {
1417 usage();
1418 return;
1419 }
1420 String file = t.nextToken();
1421 BufferedReader savedInput = in;
1422 try {
1423 BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
1424 in = input;
1425 run(false);
1426 } catch (Exception e) {
1427 out.println("Error: " + e);
1428 if (verboseExceptions) {
1429 e.printStackTrace(out);
1430 }
1431 } finally {
1432 in = savedInput;
1433 }
1434
1435 }
1436 },
1437 new Command("search", "search [ heap | perm | rawheap | codecache | threads ] value", false) {
1438 public void doit(Tokens t) {
1439 if (t.countTokens() != 2) {
1440 usage();
1441 return;
1442 }
1443 String type = t.nextToken();
1444 final Address value = VM.getVM().getDebugger().parseAddress(t.nextToken());
1445 final long stride = VM.getVM().getAddressSize();
1446 if (type.equals("threads")) {
1447 Threads threads = VM.getVM().getThreads();
1448 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
1449 Address base = thread.getBaseOfStackPointer();
1450 Address end = thread.getLastJavaSP();
1451 if (end == null) continue;
1452 if (end.lessThan(base)) {
1453 Address tmp = base;
1454 base = end;
1455 end = tmp;
1456 }
1457 out.println("Searching " + base + " " + end);
1458 while (base != null && base.lessThan(end)) {
1459 Address val = base.getAddressAt(0);
1460 if (AddressOps.equal(val, value)) {
1461 out.println(base);
1462 }
1463 base = base.addOffsetTo(stride);
1464 }
1465 }
1466 } else if (type.equals("rawheap")) {
1467 RawHeapVisitor iterator = new RawHeapVisitor() {
1468 public void prologue(long used) {
1469 }
1470
1471 public void visitAddress(Address addr) {
1472 Address val = addr.getAddressAt(0);
1473 if (AddressOps.equal(val, value)) {
1474 out.println("found at " + addr);
1475 }
1476 }
1477 public void visitCompOopAddress(Address addr) {
1478 Address val = addr.getCompOopAddressAt(0);
1479 if (AddressOps.equal(val, value)) {
1480 out.println("found at " + addr);
1481 }
1482 }
1483 public void epilogue() {
1484 }
1485 };
1486 VM.getVM().getObjectHeap().iterateRaw(iterator);
1487 } else if (type.equals("heap")) {
1488 HeapVisitor iterator = new DefaultHeapVisitor() {
1489 public boolean doObj(Oop obj) {
1490 int index = 0;
1491 Address start = obj.getHandle();
1492 long end = obj.getObjectSize();
1493 while (index < end) {
1494 Address val = start.getAddressAt(index);
1495 if (AddressOps.equal(val, value)) {
1496 out.println("found in " + obj.getHandle());
1497 break;
1498 }
1499 index += 4;
1500 }
1501 return false;
1502 }
1503 };
1504 VM.getVM().getObjectHeap().iterate(iterator);
1505 } else if (type.equals("codecache")) {
1506 CodeCacheVisitor v = new CodeCacheVisitor() {
1507 public void prologue(Address start, Address end) {
1508 }
1509 public void visit(CodeBlob blob) {
1510 boolean printed = false;
1511 Address base = blob.getAddress();
1512 Address end = base.addOffsetTo(blob.getSize());
1513 while (base != null && base.lessThan(end)) {
1514 Address val = base.getAddressAt(0);
1515 if (AddressOps.equal(val, value)) {
1516 if (!printed) {
1517 printed = true;
1518 try {
1519 blob.printOn(out);
1520 } catch (Exception e) {
1521 out.println("Exception printing blob at " + base);
1522 e.printStackTrace();
1523 }
1524 }
1525 out.println("found at " + base + "\n");
1526 }
1527 base = base.addOffsetTo(stride);
1528 }
1529 }
1530 public void epilogue() {
1531 }
1532
1533
1534 };
1535 VM.getVM().getCodeCache().iterate(v);
1536
1537 }
1538 }
1539 },
1540 new Command("dumpcodecache", "dumpcodecache", false) {
1541 public void doit(Tokens t) {
1542 if (t.countTokens() != 0) {
1543 usage();
1544 } else {
1545 final PrintStream fout = out;
1546 final HTMLGenerator gen = new HTMLGenerator(false);
1547 CodeCacheVisitor v = new CodeCacheVisitor() {
1548 public void prologue(Address start, Address end) {
1549 }
1550 public void visit(CodeBlob blob) {
1551 fout.println(gen.genHTML(blob.contentBegin()));
1552 }
1553 public void epilogue() {
1554 }
1555
1556
1557 };
1558 VM.getVM().getCodeCache().iterate(v);
1559 }
1560 }
1561 },
1562 new Command("where", "where { -a | id }", false) {
1563 public void doit(Tokens t) {
1564 if (t.countTokens() != 1) {
1565 usage();
1566 } else {
1567 String name = t.nextToken();
1568 Threads threads = VM.getVM().getThreads();
1569 boolean all = name.equals("-a");
1570 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
1571 ByteArrayOutputStream bos = new ByteArrayOutputStream();
1572 thread.printThreadIDOn(new PrintStream(bos));
1573 if (all || bos.toString().equals(name)) {
1574 out.println("Thread " + bos.toString() + " Address: " + thread.getAddress());
1575 HTMLGenerator gen = new HTMLGenerator(false);
1576 try {
1577 out.println(gen.genHTMLForJavaStackTrace(thread));
1578 } catch (Exception e) {
1579 err.println("Error: " + e);
1580 if (verboseExceptions) {
1581 e.printStackTrace(err);
1582 }
1583 }
1584 if (!all) return;
1585 }
1586 }
1587 if (!all) out.println("Couldn't find thread " + name);
1588 }
1589 }
1590 },
1591 new Command("thread", "thread { -a | id }", false) {
1592 public void doit(Tokens t) {
1593 if (t.countTokens() != 1) {
1594 usage();
1595 } else {
1596 String name = t.nextToken();
1597 Threads threads = VM.getVM().getThreads();
1598 boolean all = name.equals("-a");
1599 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
1600 ByteArrayOutputStream bos = new ByteArrayOutputStream();
1601 thread.printThreadIDOn(new PrintStream(bos));
1602 if (all || bos.toString().equals(name)) {
1603 out.println("Thread " + bos.toString() + " Address " + thread.getAddress());
1604 if (!all) return;
1605 }
1606 }
1607 out.println("Couldn't find thread " + name);
1608 }
1609 }
1610 },
1611
1612 new Command("threads", false) {
1613 public void doit(Tokens t) {
1614 if (t.countTokens() != 0) {
1615 usage();
1616 } else {
1617 Threads threads = VM.getVM().getThreads();
1618 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
1619 thread.printThreadIDOn(out);
1620 out.println(" " + thread.getThreadName());
1621 }
1622 }
1623 }
1624 },
1625
1626 new Command("livenmethods", false) {
1627 public void doit(Tokens t) {
1628 if (t.countTokens() != 0) {
1629 usage();
1630 } else {
1631 ArrayList nmethods = new ArrayList();
1632 Threads threads = VM.getVM().getThreads();
1633 HTMLGenerator gen = new HTMLGenerator(false);
1634 for (JavaThread thread = threads.first(); thread != null; thread = thread.next()) {
1635 try {
1636 for (JavaVFrame vf = thread.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) {
1637 if (vf instanceof CompiledVFrame) {
1638 NMethod c = ((CompiledVFrame)vf).getCode();
1639 if (!nmethods.contains(c)) {
1640 nmethods.add(c);
1641 out.println(gen.genHTML(c));
1642 }
1643 }
1644 }
1645 } catch (Exception e) {
1646 e.printStackTrace();
1647 }
1648 }
1649 }
1650 }
1651 },
1652 new Command("universe", false) {
1653 public void doit(Tokens t) {
1654 if (t.countTokens() != 0) {
1655 usage();
1656 } else {
1657 Universe u = VM.getVM().getUniverse();
1658 out.println("Heap Parameters:");
1659 u.heap().printOn(out);
1660 }
1661 }
1662 },
1663 new Command("verbose", "verbose true | false", true) {
1664 public void doit(Tokens t) {
1665 if (t.countTokens() != 1) {
1666 usage();
1667 } else {
1668 verboseExceptions = Boolean.valueOf(t.nextToken()).booleanValue();
1669 }
1670 }
1671 },
1672 new Command("assert", "assert true | false", true) {
1673 public void doit(Tokens t) {
1674 if (t.countTokens() != 1) {
1675 usage();
1676 } else {
1677 Assert.ASSERTS_ENABLED = Boolean.valueOf(t.nextToken()).booleanValue();
1678 }
1679 }
1680 },
1681 };
1682
1683 private boolean verboseExceptions = false;
1684 private ArrayList history = new ArrayList();
1685 private HashMap commands = new HashMap();
1686 private boolean doEcho = false;
1687
1688 private Command findCommand(String key) {
1689 return (Command)commands.get(key);
1690 }
1691
1692 public void printPrompt() {
1693 out.print("hsdb> ");
1694 }
1695
1696 private DebuggerInterface debugger;
1697 private HotSpotAgent agent;
1698 private JSJavaScriptEngine jsengine;
1699 private BufferedReader in;
1700 private PrintStream out;
1701 private PrintStream err;
1702
1703 // called before debuggee attach
1704 private void preAttach() {
1705 // nothing for now..
1706 }
1707
1708 // called after debuggee attach
1709 private void postAttach() {
1710 // create JavaScript engine and start it
1711 jsengine = new JSJavaScriptEngine() {
1712 private ObjectReader reader = new ObjectReader();
1713 private JSJavaFactory factory = new JSJavaFactoryImpl();
1714 public ObjectReader getObjectReader() {
1715 return reader;
1716 }
1717 public JSJavaFactory getJSJavaFactory() {
1718 return factory;
1719 }
1720 protected void quit() {
1721 debugger.detach();
1722 quit = true;
1723 }
1724 protected BufferedReader getInputReader() {
1725 return in;
1726 }
1727 protected PrintStream getOutputStream() {
1728 return out;
1729 }
1730 protected PrintStream getErrorStream() {
1731 return err;
1732 }
1733 };
1734 try {
1735 jsengine.defineFunction(this,
1736 this.getClass().getMethod("registerCommand",
1737 new Class[] {
1738 String.class, String.class, String.class
1739 }));
1740 } catch (NoSuchMethodException exp) {
1741 // should not happen, see below...!!
1742 exp.printStackTrace();
1743 }
1744 jsengine.start();
1745 }
1746
1747 public void registerCommand(String cmd, String usage, final String func) {
1748 commands.put(cmd, new Command(cmd, usage, false) {
1749 public void doit(Tokens t) {
1750 final int len = t.countTokens();
1751 Object[] args = new Object[len];
1752 for (int i = 0; i < len; i++) {
1753 args[i] = t.nextToken();
1754 }
1755 jsengine.call(func, args);
1756 }
1757 });
1758 }
1759
1760 public void setOutput(PrintStream o) {
1761 out = o;
1762 }
1763
1764 public void setErr(PrintStream e) {
1765 err = e;
1766 }
1767
1768 public CommandProcessor(DebuggerInterface debugger, BufferedReader in, PrintStream out, PrintStream err) {
1769 this.debugger = debugger;
1770 this.agent = debugger.getAgent();
1771 this.in = in;
1772 this.out = out;
1773 this.err = err;
1774 for (int i = 0; i < commandList.length; i++) {
1775 Command c = commandList[i];
1776 if (commands.get(c.name) != null) {
1777 throw new InternalError(c.name + " has multiple definitions");
1778 }
1779 commands.put(c.name, c);
1780 }
1781 if (debugger.isAttached()) {
1782 postAttach();
1783 }
1784 }
1785
1786
1787 public void run(boolean prompt) {
1788 // Process interactive commands.
1789 while (!quit) {
1790 if (prompt) printPrompt();
1791 String ln = null;
1792 try {
1793 ln = in.readLine();
1794 } catch (IOException e) {
1795 }
1796 if (ln == null) {
1797 if (prompt) err.println("Input stream closed.");
1798 return;
1799 }
1800
1801 executeCommand(ln, prompt);
1802 }
1803 }
1804
1805 static Pattern historyPattern = Pattern.compile("((!\\*)|(!\\$)|(!!-?)|(!-?[0-9][0-9]*)|(![a-zA-Z][^ ]*))");
1806
1807 public void executeCommand(String ln, boolean putInHistory) {
1808 if (ln.indexOf('!') != -1) {
1809 int size = history.size();
1810 if (size == 0) {
1811 ln = "";
1812 err.println("History is empty");
1813 } else {
1814 StringBuffer result = new StringBuffer();
1815 Matcher m = historyPattern.matcher(ln);
1816 int start = 0;
1817 while (m.find()) {
1818 if (m.start() > start) {
1819 result.append(ln.substring(start, m.start() - start));
1820 }
1821 start = m.end();
1822
1823 String cmd = m.group();
1824 if (cmd.equals("!!")) {
1825 result.append((String)history.get(history.size() - 1));
1826 } else if (cmd.equals("!!-")) {
1827 Tokens item = new Tokens((String)history.get(history.size() - 1));
1828 item.trim(1);
1829 result.append(item.join(" "));
1830 } else if (cmd.equals("!*")) {
1831 Tokens item = new Tokens((String)history.get(history.size() - 1));
1832 item.nextToken();
1833 result.append(item.join(" "));
1834 } else if (cmd.equals("!$")) {
1835 Tokens item = new Tokens((String)history.get(history.size() - 1));
1836 result.append(item.at(item.countTokens() - 1));
1837 } else {
1838 String tail = cmd.substring(1);
1839 switch (tail.charAt(0)) {
1840 case '0':
1841 case '1':
1842 case '2':
1843 case '3':
1844 case '4':
1845 case '5':
1846 case '6':
1847 case '7':
1848 case '8':
1849 case '9':
1850 case '-': {
1851 int index = Integer.parseInt(tail);
1852 if (index < 0) {
1853 index = history.size() + index;
1854 }
1855 if (index > size) {
1856 err.println("No such history item");
1857 } else {
1858 result.append((String)history.get(index));
1859 }
1860 break;
1861 }
1862 default: {
1863 for (int i = history.size() - 1; i >= 0; i--) {
1864 String s = (String)history.get(i);
1865 if (s.startsWith(tail)) {
1866 result.append(s);
1867 }
1868 }
1869 }
1870 }
1871 }
1872 }
1873 if (result.length() == 0) {
1874 err.println("malformed history reference");
1875 ln = "";
1876 } else {
1877 if (start < ln.length()) {
1878 result.append(ln.substring(start));
1879 }
1880 ln = result.toString();
1881 if (!doEcho) {
1882 out.println(ln);
1883 }
1884 }
1885 }
1886 }
1887
1888 if (doEcho) {
1889 out.println("+ " + ln);
1890 }
1891
1892 PrintStream redirect = null;
1893 Tokens t = new Tokens(ln);
1894 if (t.hasMoreTokens()) {
1895 boolean error = false;
1896 if (putInHistory) history.add(ln);
1897 int len = t.countTokens();
1898 if (len > 2) {
1899 String r = t.at(len - 2);
1900 if (r.equals(">") || r.equals(">>")) {
1901 boolean append = r.length() == 2;
1902 String file = t.at(len - 1);
1903 try {
1904 redirect = new PrintStream(new BufferedOutputStream(new FileOutputStream(file, append)));
1905 t.trim(2);
1906 } catch (Exception e) {
1907 out.println("Error: " + e);
1908 if (verboseExceptions) {
1909 e.printStackTrace(out);
1910 }
1911 error = true;
1912 }
1913 }
1914 }
1915 if (!error) {
1916 PrintStream savedout = out;
1917 if (redirect != null) {
1918 out = redirect;
1919 }
1920 try {
1921 executeCommand(t);
1922 } catch (Exception e) {
1923 err.println("Error: " + e);
1924 if (verboseExceptions) {
1925 e.printStackTrace(err);
1926 }
1927 } finally {
1928 if (redirect != null) {
1929 out = savedout;
1930 redirect.close();
1931 }
1932 }
1933 }
1934 }
1935 }
1936
1937 void executeCommand(Tokens args) {
1938 String cmd = args.nextToken();
1939
1940 Command doit = findCommand(cmd);
1941
1942 /*
1943 * Check for an unknown command
1944 */
1945 if (doit == null) {
1946 out.println("Unrecognized command. Try help...");
1947 } else if (!debugger.isAttached() && !doit.okIfDisconnected) {
1948 out.println("Command not valid until the attached to a VM");
1949 } else {
1950 try {
1951 doit.doit(args);
1952 } catch (Exception e) {
1953 out.println("Error: " + e);
1954 if (verboseExceptions) {
1955 e.printStackTrace(out);
1956 }
1957 }
1958 }
1959 }
1960 }