JDK 17 jdk.hotspot.agent.jmod - Hotspot Agent Module
JDK 17 jdk.hotspot.agent.jmod is the JMOD file for JDK 17 Hotspot Agent module.
JDK 17 Hotspot Agent module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\jdk.hotspot.agent.jmod.
JDK 17 Hotspot Agent module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 Hotspot Agent module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.hotspot.agent.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ sun/jvm/hotspot/CommandProcessor.java
/*
* Copyright (c) 2005, 2021, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package sun.jvm.hotspot;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Stack;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import sun.jvm.hotspot.ci.ciEnv;
import sun.jvm.hotspot.code.CodeBlob;
import sun.jvm.hotspot.code.CodeCacheVisitor;
import sun.jvm.hotspot.code.NMethod;
import sun.jvm.hotspot.debugger.Address;
import sun.jvm.hotspot.debugger.OopHandle;
import sun.jvm.hotspot.classfile.ClassLoaderDataGraph;
import sun.jvm.hotspot.memory.FileMapInfo;
import sun.jvm.hotspot.memory.SystemDictionary;
import sun.jvm.hotspot.memory.Universe;
import sun.jvm.hotspot.gc.shared.CollectedHeap;
import sun.jvm.hotspot.gc.g1.G1CollectedHeap;
import sun.jvm.hotspot.oops.DefaultHeapVisitor;
import sun.jvm.hotspot.oops.HeapVisitor;
import sun.jvm.hotspot.oops.InstanceKlass;
import sun.jvm.hotspot.oops.Klass;
import sun.jvm.hotspot.oops.Metadata;
import sun.jvm.hotspot.oops.Method;
import sun.jvm.hotspot.oops.MethodData;
import sun.jvm.hotspot.oops.Oop;
import sun.jvm.hotspot.oops.RawHeapVisitor;
import sun.jvm.hotspot.oops.Symbol;
import sun.jvm.hotspot.oops.UnknownOopException;
import sun.jvm.hotspot.opto.Compile;
import sun.jvm.hotspot.opto.InlineTree;
import sun.jvm.hotspot.runtime.CompiledVFrame;
import sun.jvm.hotspot.runtime.CompilerThread;
import sun.jvm.hotspot.runtime.JavaThread;
import sun.jvm.hotspot.runtime.JavaVFrame;
import sun.jvm.hotspot.runtime.Threads;
import sun.jvm.hotspot.runtime.VM;
import sun.jvm.hotspot.tools.ObjectHistogram;
import sun.jvm.hotspot.tools.JMap;
import sun.jvm.hotspot.tools.PMap;
import sun.jvm.hotspot.tools.PStack;
import sun.jvm.hotspot.tools.StackTrace;
import sun.jvm.hotspot.tools.SysPropsDumper;
import sun.jvm.hotspot.tools.jcore.ClassDump;
import sun.jvm.hotspot.tools.jcore.ClassFilter;
import sun.jvm.hotspot.tools.jcore.ClassWriter;
import sun.jvm.hotspot.types.CIntegerType;
import sun.jvm.hotspot.types.Field;
import sun.jvm.hotspot.types.Type;
import sun.jvm.hotspot.types.basic.BasicType;
import sun.jvm.hotspot.ui.classbrowser.HTMLGenerator;
import sun.jvm.hotspot.ui.tree.CTypeTreeNodeAdapter;
import sun.jvm.hotspot.ui.tree.OopTreeNodeAdapter;
import sun.jvm.hotspot.ui.tree.SimpleTreeNode;
import sun.jvm.hotspot.utilities.AddressOps;
import sun.jvm.hotspot.utilities.Assert;
import sun.jvm.hotspot.utilities.CompactHashTable;
import sun.jvm.hotspot.utilities.HeapProgressThunk;
import sun.jvm.hotspot.utilities.LivenessPathElement;
import sun.jvm.hotspot.utilities.MethodArray;
import sun.jvm.hotspot.utilities.ObjectReader;
import sun.jvm.hotspot.utilities.PointerFinder;
import sun.jvm.hotspot.utilities.PointerLocation;
import sun.jvm.hotspot.utilities.ReversePtrs;
import sun.jvm.hotspot.utilities.ReversePtrsAnalysis;
import sun.jvm.hotspot.utilities.RobustOopDeterminator;
import sun.jvm.hotspot.utilities.SystemDictionaryHelper;
public class CommandProcessor {
volatile boolean quit;
public abstract static class DebuggerInterface {
public abstract HotSpotAgent getAgent();
public abstract boolean isAttached();
public abstract void attach(int pid);
public abstract void attach(String java, String core);
public abstract void attach(String debugServerName);
public abstract void detach();
public abstract void reattach();
}
public static class BootFilter implements ClassFilter {
public boolean canInclude(InstanceKlass kls) {
return kls.getClassLoader() == null;
}
}
public static class NonBootFilter implements ClassFilter {
private HashMap<Symbol, InstanceKlass> emitted = new HashMap<>();
public boolean canInclude(InstanceKlass kls) {
if (kls.getClassLoader() == null) return false;
if (emitted.get(kls.getName()) != null) {
// Since multiple class loaders are being shoved
// together duplicate classes are a possibilty. For
// now just ignore them.
return false;
}
emitted.put(kls.getName(), kls);
return true;
}
}
static class Tokens {
final String input;
int i;
String[] tokens;
int length;
String[] splitWhitespace(String cmd) {
String[] t = cmd.split("\\s");
if (t.length == 1 && t[0].length() == 0) {
return new String[0];
}
return t;
}
void add(String s, ArrayList<String> t) {
if (s.length() > 0) {
t.add(s);
}
}
Tokens(String cmd) {
input = cmd;
// check for quoting
int quote = cmd.indexOf('"');
ArrayList<String> t = new ArrayList<>();
if (quote != -1) {
while (cmd.length() > 0) {
if (quote != -1) {
int endquote = cmd.indexOf('"', quote + 1);
if (endquote == -1) {
throw new RuntimeException("mismatched quotes: " + input);
}
String before = cmd.substring(0, quote).trim();
String quoted = cmd.substring(quote + 1, endquote);
cmd = cmd.substring(endquote + 1).trim();
if (before.length() > 0) {
String[] w = splitWhitespace(before);
for (int i = 0; i < w.length; i++) {
add(w[i], t);
}
}
add(quoted, t);
quote = cmd.indexOf('"');
} else {
String[] w = splitWhitespace(cmd);
for (int i = 0; i < w.length; i++) {
add(w[i], t);
}
cmd = "";
}
}
} else {
String[] w = splitWhitespace(cmd);
for (int i = 0; i < w.length; i++) {
add(w[i], t);
}
}
tokens = (String[])t.toArray(new String[0]);
i = 0;
length = tokens.length;
//for (int i = 0; i < tokens.length; i++) {
// System.out.println("\"" + tokens[i] + "\"");
//}
}
String nextToken() {
return tokens[i++];
}
boolean hasMoreTokens() {
return i < length;
}
int countTokens() {
return length - i;
}
void trim(int n) {
if (length >= n) {
length -= n;
} else {
throw new IndexOutOfBoundsException(String.valueOf(n));
}
}
String join(String sep) {
StringBuilder result = new StringBuilder();
for (int w = i; w < length; w++) {
result.append(tokens[w]);
if (w + 1 < length) {
result.append(sep);
}
}
return result.toString();
}
String at(int i) {
if (i < 0 || i >= length) {
throw new IndexOutOfBoundsException(String.valueOf(i));
}
return tokens[i];
}
}
abstract class Command {
Command(String n, String u, boolean ok) {
name = n;
usage = u;
okIfDisconnected = ok;
}
Command(String n, boolean ok) {
name = n;
usage = n;
okIfDisconnected = ok;
}
final String name;
final String usage;
final boolean okIfDisconnected;
abstract void doit(Tokens t);
void usage() {
out.println("Usage: " + usage);
}
void printNode(SimpleTreeNode node) {
int count = node.getChildCount();
for (int i = 0; i < count; i++) {
try {
SimpleTreeNode field = node.getChild(i);
out.println(field);
} catch (Exception e) {
out.println();
out.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(out);
}
}
}
}
}
void quote(String s) {
if (s.indexOf(" ") == -1) {
out.print(s);
} else {
out.print("\"");
out.print(s);
out.print("\"");
}
}
void dumpType(Type type) {
out.print("type ");
quote(type.getName());
out.print(" ");
if (type.getSuperclass() != null) {
quote(type.getSuperclass().getName());
out.print(" ");
} else {
out.print("null ");
}
out.print(type.isOopType());
out.print(" ");
if (type.isCIntegerType()) {
out.print("true ");
out.print(((CIntegerType)type).isUnsigned());
out.print(" ");
} else {
out.print("false false ");
}
out.print(type.getSize());
out.println();
}
void dumpFields(Type type) {
dumpFields(type, true);
}
void dumpFields(Type type, boolean allowStatic) {
Iterator i = type.getFields();
while (i.hasNext()) {
Field f = (Field) i.next();
if (!allowStatic && f.isStatic()) continue;
out.print("field ");
quote(type.getName());
out.print(" ");
out.print(f.getName());
out.print(" ");
quote(f.getType().getName());
out.print(" ");
out.print(f.isStatic());
out.print(" ");
if (f.isStatic()) {
out.print("0 ");
out.print(f.getStaticFieldAddress());
} else {
out.print(f.getOffset());
out.print(" 0x0");
}
out.println();
}
}
Address lookup(String symbol) {
if (symbol.indexOf("::") != -1) {
String[] parts = symbol.split("::");
StringBuilder mangled = new StringBuilder("__1c");
for (int i = 0; i < parts.length; i++) {
int len = parts[i].length();
if (len >= 26) {
mangled.append((char)('a' + (len / 26)));
len = len % 26;
}
mangled.append((char)('A' + len));
mangled.append(parts[i]);
}
mangled.append("_");
symbol = mangled.toString();
}
return VM.getVM().getDebugger().lookup(null, symbol);
}
Address parseAddress(String addr) {
return VM.getVM().getDebugger().parseAddress(addr);
}
private final Command[] commandList = {
new Command("reattach", true) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens != 0) {
usage();
return;
}
preAttach();
debugger.reattach();
postAttach();
}
},
new Command("attach", "attach pid | exec core | remote_server", true) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens == 1) {
preAttach();
String arg = t.nextToken();
try {
// Attempt to attach as a PID
debugger.attach(Integer.parseInt(arg));
} catch (NumberFormatException e) {
// Attempt to connect to remote debug server
debugger.attach(arg);
}
postAttach();
} else if (tokens == 2) {
preAttach();
debugger.attach(t.nextToken(), t.nextToken());
postAttach();
} else {
usage();
}
}
},
new Command("detach", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
debugger.detach();
}
}
},
new Command("examine", "examine [ address/count ] | [ address,address]", false) {
Pattern args1 = Pattern.compile("^(0x[0-9a-f]+)(/([0-9]*)([a-z]*))?$");
Pattern args2 = Pattern.compile("^(0x[0-9a-f]+),(0x[0-9a-f]+)(/[a-z]*)?$");
String fill(Address a, int width) {
String s = "0x0";
if (a != null) {
s = a.toString();
}
if (s.length() != width) {
return s.substring(0, 2) + "000000000000000000000".substring(0, width - s.length()) + s.substring(2);
}
return s;
}
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String arg = t.nextToken();
Matcher m1 = args1.matcher(arg);
Matcher m2 = args2.matcher(arg);
Address start = null;
Address end = null;
String format = "";
int formatSize = (int)VM.getVM().getAddressSize();
if (m1.matches()) {
start = VM.getVM().getDebugger().parseAddress(m1.group(1));
int count = 1;
if (m1.group(2) != null) {
count = Integer.parseInt(m1.group(3));
}
end = start.addOffsetTo(count * formatSize);
} else if (m2.matches()) {
start = VM.getVM().getDebugger().parseAddress(m2.group(1));
end = VM.getVM().getDebugger().parseAddress(m2.group(2));
} else {
usage();
return;
}
int line = 80;
int formatWidth = formatSize * 8 / 4 + 2;
out.print(fill(start, formatWidth));
out.print(": ");
int width = line - formatWidth - 2;
boolean needsPrintln = true;
while (start != null && start.lessThan(end)) {
Address val = start.getAddressAt(0);
out.print(fill(val, formatWidth));
needsPrintln = true;
width -= formatWidth;
start = start.addOffsetTo(formatSize);
if (width <= formatWidth) {
out.println();
needsPrintln = false;
if (start.lessThan(end)) {
out.print(fill(start, formatWidth));
out.print(": ");
width = line - formatWidth - 2;
}
} else {
out.print(" ");
width -= 1;
}
}
if (needsPrintln) {
out.println();
}
}
}
},
new Command("dumpreplaydata", "dumpreplaydata { <address > | -a | <thread_id> }", false) {
// This is used to dump replay data from ciInstanceKlass, ciMethodData etc
// default file name is replay.txt, also if java crashes in compiler
// thread, this file will be dumped in error processing.
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
return;
}
String name = t.nextToken();
Address a = null;
try {
a = VM.getVM().getDebugger().parseAddress(name);
} catch (NumberFormatException e) { }
if (a != null) {
// only nmethod, Method, MethodData and InstanceKlass needed to
// dump replay data
CodeBlob cb = VM.getVM().getCodeCache().findBlob(a);
if (cb != null && (cb instanceof NMethod)) {
((NMethod)cb).dumpReplayData(out);
return;
}
// assume it is Metadata
Metadata meta = Metadata.instantiateWrapperFor(a);
if (meta != null) {
meta.dumpReplayData(out);
} else {
usage();
return;
}
}
// Not an address
boolean all = name.equals("-a");
Threads threads = VM.getVM().getThreads();
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
thread.printThreadIDOn(new PrintStream(bos));
if (all || bos.toString().equals(name)) {
if (thread instanceof CompilerThread) {
CompilerThread ct = (CompilerThread)thread;
ciEnv env = ct.env();
if (env != null) {
env.dumpReplayData(out);
}
}
}
}
}
},
new Command("buildreplayjars", "buildreplayjars [ all | app | boot ] | [ prefix ]", false) {
// This is used to dump jar files of all the classes
// loaded in the core. Everything with null classloader
// will go in boot.jar and everything else will go in
// app.jar. boot.jar usually not needed, unless changed by jvmti.
public void doit(Tokens t) {
int tcount = t.countTokens();
if (tcount > 2) {
usage();
return;
}
try {
String prefix = "";
String option = "all"; // default
switch(tcount) {
case 0:
break;
case 1:
option = t.nextToken();
if (!option.equalsIgnoreCase("all") && !option.equalsIgnoreCase("app") &&
!option.equalsIgnoreCase("root")) {
prefix = option;
option = "all";
}
break;
case 2:
option = t.nextToken();
prefix = t.nextToken();
break;
default:
usage();
return;
}
if (!option.equalsIgnoreCase("all") && !option.equalsIgnoreCase("app") &&
!option.equalsIgnoreCase("boot")) {
usage();
return;
}
ClassDump cd = new ClassDump();
if (option.equalsIgnoreCase("all") || option.equalsIgnoreCase("boot")) {
cd.setClassFilter(new BootFilter());
cd.setJarOutput(prefix + "boot.jar");
cd.run();
}
if (option.equalsIgnoreCase("all") || option.equalsIgnoreCase("app")) {
cd.setClassFilter(new NonBootFilter());
cd.setJarOutput(prefix + "app.jar");
cd.run();
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
},
new Command("findsym", "findsym name", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String result = VM.getVM().getDebugger().findSymbol(t.nextToken());
out.println(result == null ? "Symbol not found" : result);
}
}
},
new Command("findpc", "findpc address", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
PointerLocation loc = PointerFinder.find(a);
loc.printOn(out);
}
}
},
new Command("symbol", "symbol address", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
Symbol.create(a).printValueOn(out);
out.println();
}
}
},
new Command("flags", "flags [ flag | -nd ]", false) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens != 0 && tokens != 1) {
usage();
} else {
String name = tokens > 0 ? t.nextToken() : null;
boolean nonDefault = false;
if (name != null && name.equals("-nd")) {
name = null;
nonDefault = true;
}
VM.Flag[] flags = VM.getVM().getCommandLineFlags();
if (flags == null) {
out.println("Command Flag info not available (use 1.4.1_03 or later)!");
} else {
boolean printed = false;
for (int f = 0; f < flags.length; f++) {
VM.Flag flag = flags[f];
if (name == null || flag.getName().equals(name)) {
if (nonDefault && (flag.getOrigin() == VM.Flags_DEFAULT)) {
// only print flags which aren't their defaults
continue;
}
out.println(flag.getName() + " = " + flag.getValue() + " " + flag.getOriginString());
printed = true;
}
}
if (name != null && !printed) {
out.println("Couldn't find flag: " + name);
}
}
}
}
},
new Command("help", "help [ command ]", true) {
public void doit(Tokens t) {
int tokens = t.countTokens();
Command cmd = null;
if (tokens == 1) {
cmd = findCommand(t.nextToken());
}
if (cmd != null) {
cmd.usage();
} else if (tokens == 0) {
out.println("Available commands:");
Object[] keys = commands.keySet().toArray();
Arrays.sort(keys, new Comparator<>() {
public int compare(Object o1, Object o2) {
return o1.toString().compareTo(o2.toString());
}
});
for (int i = 0; i < keys.length; i++) {
out.print(" ");
out.println(((Command)commands.get(keys[i])).usage);
}
}
}
},
new Command("history", "history", true) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens != 0 && (tokens != 1 || !t.nextToken().equals("-h"))) {
usage();
return;
}
boolean printIndex = tokens == 0;
for (int i = 0; i < history.size(); i++) {
if (printIndex) out.print(i + " ");
out.println(history.get(i));
}
}
},
// decode raw address
new Command("dis", "dis address [length]", false) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens != 1 && tokens != 2) {
usage();
return;
}
String name = t.nextToken();
Address addr = null;
int len = 0x10; // default length
try {
addr = VM.getVM().getDebugger().parseAddress(name);
} catch (NumberFormatException e) {
out.println(e);
return;
}
if (tokens == 2) {
try {
len = Integer.parseInt(t.nextToken());
} catch (NumberFormatException e) {
out.println(e);
return;
}
}
HTMLGenerator generator = new HTMLGenerator(false);
out.println(generator.genHTMLForRawDisassembly(addr, len));
}
},
// decode codeblob or nmethod
new Command("disassemble", "disassemble address", false) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens != 1) {
usage();
return;
}
String name = t.nextToken();
Address addr = null;
try {
addr = VM.getVM().getDebugger().parseAddress(name);
} catch (NumberFormatException e) {
out.println(e);
return;
}
HTMLGenerator generator = new HTMLGenerator(false);
out.println(generator.genHTML(addr));
}
},
// print Java bytecode disassembly
new Command("jdis", "jdis address", false) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens != 1) {
usage();
return;
}
Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
Method m = (Method)Metadata.instantiateWrapperFor(a);
HTMLGenerator html = new HTMLGenerator(false);
out.println(html.genHTML(m));
}
},
new Command("revptrs", "revptrs address", false) {
public void doit(Tokens t) {
int tokens = t.countTokens();
if (tokens != 1 && (tokens != 2 || !t.nextToken().equals("-c"))) {
usage();
return;
}
boolean chase = tokens == 2;
ReversePtrs revptrs = VM.getVM().getRevPtrs();
if (revptrs == null) {
out.println("Computing reverse pointers...");
ReversePtrsAnalysis analysis = new ReversePtrsAnalysis();
final boolean[] complete = new boolean[1];
HeapProgressThunk thunk = new HeapProgressThunk() {
public void heapIterationFractionUpdate(double d) {}
public synchronized void heapIterationComplete() {
complete[0] = true;
notify();
}
};
analysis.setHeapProgressThunk(thunk);
analysis.run();
while (!complete[0]) {
synchronized (thunk) {
try {
thunk.wait();
} catch (Exception e) {
}
}
}
revptrs = VM.getVM().getRevPtrs();
out.println("Done.");
}
Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
if (VM.getVM().getUniverse().heap().isInReserved(a)) {
OopHandle handle = a.addOffsetToAsOopHandle(0);
Oop oop = VM.getVM().getObjectHeap().newOop(handle);
ArrayList ptrs = revptrs.get(oop);
if (ptrs == null) {
out.println("no live references to " + a);
} else {
if (chase) {
while (ptrs.size() == 1) {
LivenessPathElement e = (LivenessPathElement)ptrs.get(0);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
Oop.printOopValueOn(e.getObj(), new PrintStream(bos));
out.println(bos.toString());
ptrs = revptrs.get(e.getObj());
}
} else {
for (int i = 0; i < ptrs.size(); i++) {
LivenessPathElement e = (LivenessPathElement)ptrs.get(i);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
Oop.printOopValueOn(e.getObj(), new PrintStream(bos));
out.println(bos.toString());
oop = e.getObj();
}
}
}
}
}
},
new Command("printmdo", "printmdo [ -a | expression ]", false) {
// Print every MDO in the heap or the one referenced by expression.
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String s = t.nextToken();
if (s.equals("-a")) {
ClassLoaderDataGraph cldg = VM.getVM().getClassLoaderDataGraph();
cldg.classesDo(new ClassLoaderDataGraph.ClassVisitor() {
public void visit(Klass k) {
if (k instanceof InstanceKlass) {
MethodArray methods = ((InstanceKlass)k).getMethods();
for (int i = 0; i < methods.length(); i++) {
Method m = methods.at(i);
MethodData mdo = m.getMethodData();
if (mdo != null) {
out.println("MethodData " + mdo.getAddress() + " for " +
"method " + m.getMethodHolder().getName().asString() + "." +
m.getName().asString() +
m.getSignature().asString() + "@" + m.getAddress());
mdo.printDataOn(out);
}
}
}
}
}
);
} else {
Address a = VM.getVM().getDebugger().parseAddress(s);
MethodData mdo = (MethodData) Metadata.instantiateWrapperFor(a);
mdo.printDataOn(out);
}
}
}
},
new Command("printall", "printall", false) {
// Print every MDO in the heap or the one referenced by expression.
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
ClassLoaderDataGraph cldg = VM.getVM().getClassLoaderDataGraph();
cldg.classesDo(new ClassLoaderDataGraph.ClassVisitor() {
public void visit(Klass k) {
if (k instanceof InstanceKlass && ((InstanceKlass)k).getConstants().getCache() != null) {
MethodArray methods = ((InstanceKlass)k).getMethods();
for (int i = 0; i < methods.length(); i++) {
Method m = methods.at(i);
HTMLGenerator gen = new HTMLGenerator(false);
out.println(gen.genHTML(m));
}
}
}
}
);
}
}
},
new Command("dumpideal", "dumpideal { -a | id }", false) {
// Do a full dump of the nodes reachable from root in each compiler thread.
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String name = t.nextToken();
boolean all = name.equals("-a");
Threads threads = VM.getVM().getThreads();
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
thread.printThreadIDOn(new PrintStream(bos));
if (all || bos.toString().equals(name)) {
if (thread instanceof CompilerThread) {
CompilerThread ct = (CompilerThread)thread;
out.println(ct);
ciEnv env = ct.env();
if (env != null) {
Compile c = env.compilerData();
c.root().dump(9999, out);
} else {
out.println(" not compiling");
}
}
}
}
}
}
},
new Command("dumpcfg", "dumpcfg { -a | id }", false) {
// Dump the PhaseCFG for every compiler thread that has one live.
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String name = t.nextToken();
boolean all = name.equals("-a");
Threads threads = VM.getVM().getThreads();
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
thread.printThreadIDOn(new PrintStream(bos));
if (all || bos.toString().equals(name)) {
if (thread instanceof CompilerThread) {
CompilerThread ct = (CompilerThread)thread;
out.println(ct);
ciEnv env = ct.env();
if (env != null) {
Compile c = env.compilerData();
c.cfg().dump(out);
}
}
}
}
}
}
},
new Command("dumpilt", "dumpilt { -a | id }", false) {
// dumps the InlineTree of a C2 compile
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String name = t.nextToken();
boolean all = name.equals("-a");
Threads threads = VM.getVM().getThreads();
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
thread.printThreadIDOn(new PrintStream(bos));
if (all || bos.toString().equals(name)) {
if (thread instanceof CompilerThread) {
CompilerThread ct = (CompilerThread)thread;
ciEnv env = ct.env();
if (env != null) {
Compile c = env.compilerData();
InlineTree ilt = c.ilt();
if (ilt != null) {
ilt.print(out);
}
}
}
}
}
}
}
},
new Command("vmstructsdump", "vmstructsdump", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
return;
}
// Dump a copy of the type database in a form that can
// be read back.
Iterator i = agent.getTypeDataBase().getTypes();
// Make sure the types are emitted in an order than can be read back in
HashSet<String> emitted = new HashSet<>();
Stack<Type> pending = new Stack<>();
while (i.hasNext()) {
Type n = (Type)i.next();
if (emitted.contains(n.getName())) {
continue;
}
while (n != null && !emitted.contains(n.getName())) {
pending.push(n);
n = n.getSuperclass();
}
while (!pending.empty()) {
n = (Type)pending.pop();
dumpType(n);
emitted.add(n.getName());
}
}
i = agent.getTypeDataBase().getTypes();
while (i.hasNext()) {
dumpFields((Type)i.next(), false);
}
}
},
new Command("inspect", "inspect expression", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
SimpleTreeNode node = null;
if (VM.getVM().getUniverse().heap().isInReserved(a)) {
OopHandle handle = a.addOffsetToAsOopHandle(0);
Oop oop = VM.getVM().getObjectHeap().newOop(handle);
node = new OopTreeNodeAdapter(oop, null);
out.println("instance of " + node.getValue() +
" (size = " + oop.getObjectSize() + ")");
} else if (VM.getVM().getCodeCache().contains(a)) {
CodeBlob blob = VM.getVM().getCodeCache().findBlobUnsafe(a);
a = blob.headerBegin();
}
if (node == null) {
Type type = VM.getVM().getTypeDataBase().guessTypeForAddress(a);
if (type == null && VM.getVM().isSharingEnabled()) {
// Check if the value falls in the _md_region
Address loc1 = a.getAddressAt(0);
FileMapInfo cdsFileMapInfo = VM.getVM().getFileMapInfo();
if (cdsFileMapInfo.inCopiedVtableSpace(loc1)) {
type = cdsFileMapInfo.getTypeForVptrAddress(loc1);
}
}
if (type != null) {
out.println("Type is " + type.getName() + " (size of " + type.getSize() + ")");
node = new CTypeTreeNodeAdapter(a, type, null);
}
}
if (node != null) {
printNode(node);
}
}
}
},
new Command("jhisto", "jhisto", false) {
public void doit(Tokens t) {
ObjectHistogram histo = new ObjectHistogram();
histo.run(out, err);
}
},
new Command("jstack", "jstack [-v]", false) {
public void doit(Tokens t) {
boolean verbose = false;
if (t.countTokens() > 0 && t.nextToken().equals("-v")) {
verbose = true;
}
StackTrace jstack = new StackTrace(verbose, true);
jstack.run(out);
}
},
new Command("print", "print expression", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
HTMLGenerator gen = new HTMLGenerator(false);
out.println(gen.genHTML(a));
}
}
},
new Command("printas", "printas type expression", false) {
public void doit(Tokens t) {
if (t.countTokens() != 2) {
usage();
} else {
Type type = agent.getTypeDataBase().lookupType(t.nextToken());
Address a = VM.getVM().getDebugger().parseAddress(t.nextToken());
CTypeTreeNodeAdapter node = new CTypeTreeNodeAdapter(a, type, null);
out.println("pointer to " + type + " @ " + a +
" (size = " + type.getSize() + ")");
printNode(node);
}
}
},
new Command("printstatics", "printstatics [ type ]", false) {
public void doit(Tokens t) {
if (t.countTokens() > 1) {
usage();
} else {
if (t.countTokens() == 0) {
out.println("All known static fields");
printNode(new CTypeTreeNodeAdapter(agent.getTypeDataBase().getTypes()));
} else {
Type type = agent.getTypeDataBase().lookupType(t.nextToken());
out.println("Static fields of " + type.getName());
printNode(new CTypeTreeNodeAdapter(type));
}
}
}
},
new Command("pmap", "pmap", false) {
public void doit(Tokens t) {
PMap pmap = new PMap(debugger.getAgent());
pmap.run(out, debugger.getAgent().getDebugger());
}
},
new Command("pstack", "pstack [-v]", false) {
public void doit(Tokens t) {
boolean verbose = false;
if (t.countTokens() > 0 && t.nextToken().equals("-v")) {
verbose = true;
}
PStack pstack = new PStack(verbose, true, debugger.getAgent());
pstack.run(out, debugger.getAgent().getDebugger());
}
},
new Command("quit", true) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
debugger.detach();
quit = true;
}
}
},
new Command("echo", "echo [ true | false ]", true) {
public void doit(Tokens t) {
if (t.countTokens() == 0) {
out.println("echo is " + doEcho);
} else if (t.countTokens() == 1) {
doEcho = Boolean.valueOf(t.nextToken()).booleanValue();
} else {
usage();
}
}
},
new Command("versioncheck", "versioncheck [ true | false ]", true) {
public void doit(Tokens t) {
if (t.countTokens() == 0) {
out.println("versioncheck is " +
(System.getProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck") == null));
} else if (t.countTokens() == 1) {
if (Boolean.valueOf(t.nextToken()).booleanValue()) {
System.clearProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck");
} else {
System.setProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck", "true");
}
} else {
usage();
}
}
},
new Command("scanoops", "scanoops start end [ type ]", false) {
public void doit(Tokens t) {
if (t.countTokens() != 2 && t.countTokens() != 3) {
usage();
} else {
long stride = VM.getVM().getAddressSize();
Address base = VM.getVM().getDebugger().parseAddress(t.nextToken());
Address end = VM.getVM().getDebugger().parseAddress(t.nextToken());
Klass klass = null;
if (t.countTokens() == 1) {
klass = SystemDictionaryHelper.findInstanceKlass(t.nextToken());
if (klass == null) {
out.println("No such type.");
return;
}
}
while (base != null && base.lessThan(end)) {
long step = stride;
OopHandle handle = base.addOffsetToAsOopHandle(0);
if (RobustOopDeterminator.oopLooksValid(handle)) {
try {
Oop oop = VM.getVM().getObjectHeap().newOop(handle);
if (klass == null || oop.getKlass().isSubtypeOf(klass))
out.println(handle.toString() + " " + oop.getKlass().getName().asString());
step = oop.getObjectSize();
} catch (UnknownOopException ex) {
// ok
} catch (RuntimeException ex) {
ex.printStackTrace();
}
}
base = base.addOffsetTo(step);
}
}
}
},
new Command("intConstant", "intConstant [ name [ value ] ]", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 2) {
usage();
return;
}
HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
if (t.countTokens() == 1) {
String name = t.nextToken();
out.println("intConstant " + name + " " + db.lookupIntConstant(name));
} else if (t.countTokens() == 0) {
Iterator i = db.getIntConstants();
while (i.hasNext()) {
String name = (String)i.next();
out.println("intConstant " + name + " " + db.lookupIntConstant(name));
}
} else if (t.countTokens() == 2) {
String name = t.nextToken();
Integer value = Integer.valueOf(t.nextToken());
db.addIntConstant(name, value);
}
}
},
new Command("longConstant", "longConstant [ name [ value ] ]", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 2) {
usage();
return;
}
HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
if (t.countTokens() == 1) {
String name = t.nextToken();
out.println("longConstant " + name + " " + db.lookupLongConstant(name));
} else if (t.countTokens() == 0) {
Iterator i = db.getLongConstants();
while (i.hasNext()) {
String name = (String)i.next();
out.println("longConstant " + name + " " + db.lookupLongConstant(name));
}
} else if (t.countTokens() == 2) {
String name = t.nextToken();
Long value = Long.valueOf(t.nextToken());
db.addLongConstant(name, value);
}
}
},
new Command("field", "field [ type [ name fieldtype isStatic offset address ] ]", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 6) {
usage();
return;
}
if (t.countTokens() == 1) {
Type type = agent.getTypeDataBase().lookupType(t.nextToken());
dumpFields(type);
} else if (t.countTokens() == 0) {
Iterator i = agent.getTypeDataBase().getTypes();
while (i.hasNext()) {
dumpFields((Type)i.next());
}
} else {
BasicType containingType = (BasicType)agent.getTypeDataBase().lookupType(t.nextToken());
String fieldName = t.nextToken();
// The field's Type must already be in the database -- no exceptions
Type fieldType = agent.getTypeDataBase().lookupType(t.nextToken());
boolean isStatic = Boolean.valueOf(t.nextToken()).booleanValue();
long offset = Long.parseLong(t.nextToken());
Address staticAddress = parseAddress(t.nextToken());
if (isStatic && staticAddress == null) {
staticAddress = lookup(containingType.getName() + "::" + fieldName);
}
// check to see if the field already exists
Iterator i = containingType.getFields();
while (i.hasNext()) {
Field f = (Field) i.next();
if (f.getName().equals(fieldName)) {
if (f.isStatic() != isStatic) {
throw new RuntimeException("static/nonstatic mismatch: " + t.input);
}
if (!isStatic) {
if (f.getOffset() != offset) {
throw new RuntimeException("bad redefinition of field offset: " + t.input);
}
} else {
if (!f.getStaticFieldAddress().equals(staticAddress)) {
throw new RuntimeException("bad redefinition of field location: " + t.input);
}
}
if (f.getType() != fieldType) {
throw new RuntimeException("bad redefinition of field type: " + t.input);
}
return;
}
}
// Create field by type
HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
db.createField(containingType,
fieldName, fieldType,
isStatic,
offset,
staticAddress);
}
}
},
new Command("tokenize", "tokenize ...", true) {
public void doit(Tokens t) {
while (t.hasMoreTokens()) {
out.println("\"" + t.nextToken() + "\"");
}
}
},
new Command("type", "type [ type [ name super isOop isInteger isUnsigned size ] ]", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1 && t.countTokens() != 0 && t.countTokens() != 6) {
usage();
return;
}
if (t.countTokens() == 6) {
String typeName = t.nextToken();
String superclassName = t.nextToken();
if (superclassName.equals("null")) {
superclassName = null;
}
boolean isOop = Boolean.valueOf(t.nextToken()).booleanValue();
boolean isInteger = Boolean.valueOf(t.nextToken()).booleanValue();
boolean isUnsigned = Boolean.valueOf(t.nextToken()).booleanValue();
long size = Long.parseLong(t.nextToken());
BasicType type = null;
try {
type = (BasicType)agent.getTypeDataBase().lookupType(typeName);
} catch (RuntimeException e) {
}
if (type != null) {
if (type.isOopType() != isOop) {
throw new RuntimeException("oop mismatch in type definition: " + t.input);
}
if (type.isCIntegerType() != isInteger) {
throw new RuntimeException("integer type mismatch in type definition: " + t.input);
}
if (type.isCIntegerType() && (((CIntegerType)type).isUnsigned()) != isUnsigned) {
throw new RuntimeException("unsigned mismatch in type definition: " + t.input);
}
if (type.getSuperclass() == null) {
if (superclassName != null) {
if (type.getSize() == -1) {
type.setSuperclass(agent.getTypeDataBase().lookupType(superclassName));
} else {
throw new RuntimeException("unexpected superclass in type definition: " + t.input);
}
}
} else {
if (superclassName == null) {
throw new RuntimeException("missing superclass in type definition: " + t.input);
}
if (!type.getSuperclass().getName().equals(superclassName)) {
throw new RuntimeException("incorrect superclass in type definition: " + t.input);
}
}
if (type.getSize() != size) {
if (type.getSize() == -1) {
type.setSize(size);
}
throw new RuntimeException("size mismatch in type definition: " + t.input);
}
return;
}
// Create type
HotSpotTypeDataBase db = (HotSpotTypeDataBase)agent.getTypeDataBase();
db.createType(typeName, superclassName, isOop, isInteger, isUnsigned, size);
} else if (t.countTokens() == 1) {
Type type = agent.getTypeDataBase().lookupType(t.nextToken());
dumpType(type);
} else {
Iterator i = agent.getTypeDataBase().getTypes();
// Make sure the types are emitted in an order than can be read back in
HashSet<String> emitted = new HashSet<>();
Stack<Type> pending = new Stack<>();
while (i.hasNext()) {
Type n = (Type)i.next();
if (emitted.contains(n.getName())) {
continue;
}
while (n != null && !emitted.contains(n.getName())) {
pending.push(n);
n = n.getSuperclass();
}
while (!pending.empty()) {
n = (Type)pending.pop();
dumpType(n);
emitted.add(n.getName());
}
}
}
}
},
new Command("source", "source filename", true) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
return;
}
String file = t.nextToken();
BufferedReader savedInput = in;
try {
BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
in = input;
run(false);
} catch (Exception e) {
out.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(out);
}
} finally {
in = savedInput;
}
}
},
new Command("search", "search [ heap | perm | rawheap | codecache | threads ] value", false) {
public void doit(Tokens t) {
if (t.countTokens() != 2) {
usage();
return;
}
String type = t.nextToken();
final Address value = VM.getVM().getDebugger().parseAddress(t.nextToken());
final long stride = VM.getVM().getAddressSize();
if (type.equals("threads")) {
Threads threads = VM.getVM().getThreads();
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
Address base = thread.getStackBase();
Address end = thread.getLastJavaSP();
if (end == null) continue;
if (end.lessThan(base)) {
Address tmp = base;
base = end;
end = tmp;
}
//out.println("Searching " + base + " " + end);
while (base != null && base.lessThan(end)) {
Address val = base.getAddressAt(0);
if (AddressOps.equal(val, value)) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
thread.printThreadIDOn(new PrintStream(bos));
out.println("found on the stack of thread " + bos.toString() + " at " + base);
}
base = base.addOffsetTo(stride);
}
}
} else if (type.equals("rawheap")) {
RawHeapVisitor iterator = new RawHeapVisitor() {
public void prologue(long used) {
}
public void visitAddress(Address addr) {
Address val = addr.getAddressAt(0);
if (AddressOps.equal(val, value)) {
out.println("found at " + addr);
}
}
public void visitCompOopAddress(Address addr) {
Address val = addr.getCompOopAddressAt(0);
if (AddressOps.equal(val, value)) {
out.println("found at " + addr);
}
}
public void epilogue() {
}
};
VM.getVM().getObjectHeap().iterateRaw(iterator);
} else if (type.equals("heap")) {
HeapVisitor iterator = new DefaultHeapVisitor() {
public boolean doObj(Oop obj) {
int index = 0;
Address start = obj.getHandle();
long end = obj.getObjectSize();
while (index < end) {
Address val = start.getAddressAt(index);
if (AddressOps.equal(val, value)) {
out.println("found in " + obj.getHandle());
break;
}
index += 4;
}
return false;
}
};
VM.getVM().getObjectHeap().iterate(iterator);
} else if (type.equals("codecache")) {
CodeCacheVisitor v = new CodeCacheVisitor() {
public void prologue(Address start, Address end) {
}
public void visit(CodeBlob blob) {
boolean printed = false;
Address base = blob.getAddress();
Address end = base.addOffsetTo(blob.getSize());
while (base != null && base.lessThan(end)) {
Address val = base.getAddressAt(0);
if (AddressOps.equal(val, value)) {
if (!printed) {
printed = true;
try {
blob.printOn(out);
} catch (Exception e) {
out.println("Exception printing blob at " + base);
e.printStackTrace();
}
}
out.println("found at " + base + "\n");
}
base = base.addOffsetTo(stride);
}
}
public void epilogue() {
}
};
VM.getVM().getCodeCache().iterate(v);
}
}
},
new Command("dumpcodecache", "dumpcodecache", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
final PrintStream fout = out;
final HTMLGenerator gen = new HTMLGenerator(false);
CodeCacheVisitor v = new CodeCacheVisitor() {
public void prologue(Address start, Address end) {
}
public void visit(CodeBlob blob) {
fout.println(gen.genHTML(blob.contentBegin()));
}
public void epilogue() {
}
};
VM.getVM().getCodeCache().iterate(v);
}
}
},
new Command("where", "where { -a | id }", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String name = t.nextToken();
Threads threads = VM.getVM().getThreads();
boolean all = name.equals("-a");
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
thread.printThreadIDOn(new PrintStream(bos));
if (all || bos.toString().equals(name)) {
out.println("Thread " + bos.toString() + " Address: " + thread.getAddress());
HTMLGenerator gen = new HTMLGenerator(false);
try {
out.println(gen.genHTMLForJavaStackTrace(thread));
} catch (Exception e) {
err.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(err);
}
}
if (!all) return;
}
}
if (!all) out.println("Couldn't find thread " + name);
}
}
},
new Command("thread", "thread { -a | id }", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
String name = t.nextToken();
Threads threads = VM.getVM().getThreads();
boolean all = name.equals("-a");
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
thread.printThreadIDOn(new PrintStream(bos));
if (all || bos.toString().equals(name)) {
out.println("Thread " + bos.toString() + " Address " + thread.getAddress());
thread.printInfoOn(out);
out.println(" ");
if (!all) return;
}
}
if (!all) {
out.println("Couldn't find thread " + name);
}
}
}
},
new Command("threads", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
Threads threads = VM.getVM().getThreads();
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
thread.printThreadIDOn(out);
out.println(" " + thread.getThreadName());
thread.printInfoOn(out);
out.println("\n...");
}
}
}
},
new Command("livenmethods", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
ArrayList<NMethod> nmethods = new ArrayList<>();
Threads threads = VM.getVM().getThreads();
HTMLGenerator gen = new HTMLGenerator(false);
for (int i = 0; i < threads.getNumberOfThreads(); i++) {
JavaThread thread = threads.getJavaThreadAt(i);
try {
for (JavaVFrame vf = thread.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) {
if (vf instanceof CompiledVFrame) {
NMethod c = ((CompiledVFrame)vf).getCode();
if (!nmethods.contains(c)) {
nmethods.add(c);
out.println(gen.genHTML(c));
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
},
new Command("g1regiondetails", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
CollectedHeap heap = VM.getVM().getUniverse().heap();
if (!(heap instanceof G1CollectedHeap)) {
out.println("This command is valid only for G1GC.");
return;
}
out.println("Region Details:");
((G1CollectedHeap)heap).printRegionDetails(out);
}
}
},
new Command("universe", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
} else {
Universe u = VM.getVM().getUniverse();
out.println("Heap Parameters:");
u.heap().printOn(out);
}
}
},
new Command("verbose", "verbose true | false", true) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
verboseExceptions = Boolean.valueOf(t.nextToken()).booleanValue();
}
}
},
new Command("assert", "assert true | false", true) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
} else {
Assert.ASSERTS_ENABLED = Boolean.valueOf(t.nextToken()).booleanValue();
}
}
},
new Command("dumpclass", "dumpclass {address | name} [directory]", false) {
public void doit(Tokens t) {
int tokenCount = t.countTokens();
if (tokenCount != 1 && tokenCount != 2) {
usage();
return;
}
/* Find the InstanceKlass for specified class name or class address. */
InstanceKlass ik = null;
String classname = t.nextToken();
if (classname.startsWith("0x")) {
// treat it as address
VM vm = VM.getVM();
Address addr = vm.getDebugger().parseAddress(classname);
Metadata metadata = Metadata.instantiateWrapperFor(addr.addOffsetTo(0));
if (metadata instanceof InstanceKlass) {
ik = (InstanceKlass) metadata;
} else {
out.println("Specified address is not an InstanceKlass");
return;
}
} else {
ik = SystemDictionaryHelper.findInstanceKlass(classname);
if (ik == null) {
out.println("class not found: " + classname);
return;
}
}
/* Compute filename for class. */
StringBuilder buf = new StringBuilder();
if (tokenCount > 1) {
buf.append(t.nextToken());
} else {
buf.append('.');
}
buf.append(File.separatorChar);
buf.append(ik.getName().asString().replace('/', File.separatorChar));
buf.append(".class");
String fileName = buf.toString();
File file = new File(fileName);
/* Dump the class file. */
try {
int index = fileName.lastIndexOf(File.separatorChar);
File dir = new File(fileName.substring(0, index));
dir.mkdirs();
try (FileOutputStream fos = new FileOutputStream(file)) {
ClassWriter cw = new ClassWriter(ik, fos);
cw.write();
}
} catch (Exception e) {
err.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(err);
}
}
}
},
new Command("sysprops", "sysprops", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
return;
}
SysPropsDumper sysProps = new SysPropsDumper();
sysProps.run();
}
},
new Command("dumpheap", "dumpheap [gz=<1-9>] [filename]", false) {
public void doit(Tokens t) {
int cntTokens = t.countTokens();
if (cntTokens > 2) {
err.println("More than 2 options specified: " + cntTokens);
usage();
return;
}
JMap jmap = new JMap();
String filename = "heap.bin";
int gzlevel = 0;
/*
* Possible command:
* dumpheap gz=1 file;
* dumpheap gz=1;
* dumpheap file;
* dumpheap
*
* Use default filename if cntTokens == 0.
* Handle cases with cntTokens == 1 or 2.
*/
if (cntTokens == 1) { // first argument could be filename or "gz="
String option = t.nextToken();
if (!option.startsWith("gz=")) {
filename = option;
} else {
gzlevel = parseHeapDumpCompressionLevel(option);
if (gzlevel == 0) {
usage();
return;
}
filename = "heap.bin.gz";
}
}
if (cntTokens == 2) { // first argument is "gz=" followed by filename
String option = t.nextToken();
gzlevel = parseHeapDumpCompressionLevel(option);
if (gzlevel == 0) {
usage();
return;
}
filename = t.nextToken();
if (filename.startsWith("gz=")) {
err.println("Filename should not start with \"gz=\": " + filename);
usage();
return;
}
}
try {
jmap.writeHeapHprofBin(filename, gzlevel);
} catch (Exception e) {
err.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(err);
}
}
}
},
new Command("class", "class name", false) {
public void doit(Tokens t) {
if (t.countTokens() != 1) {
usage();
return;
}
String classname = t.nextToken();
InstanceKlass ik = SystemDictionaryHelper.findInstanceKlass(classname);
if (ik == null) {
out.println("class not found: " + classname);
} else {
out.println(ik.getName().asString() + " @" + ik.getAddress());
}
}
},
new Command("classes", "classes", false) {
public void doit(Tokens t) {
if (t.countTokens() != 0) {
usage();
return;
}
ClassLoaderDataGraph cldg = VM.getVM().getClassLoaderDataGraph();
cldg.classesDo(new ClassLoaderDataGraph.ClassVisitor() {
public void visit(Klass k) {
out.println(k.getName().asString() + " @" + k.getAddress());
}
}
);
}
},
};
private boolean verboseExceptions = false;
private ArrayList<String> history = new ArrayList<>();
private HashMap<String, Command> commands = new HashMap<>();
private boolean doEcho = false;
private Command findCommand(String key) {
return (Command)commands.get(key);
}
public void printPrompt() {
out.print("hsdb> ");
}
private DebuggerInterface debugger;
private HotSpotAgent agent;
private BufferedReader in;
private PrintStream out;
private PrintStream err;
// called before debuggee attach
private void preAttach() {
// nothing for now..
}
// called after debuggee attach
private void postAttach() {
// nothing for now..
}
public void setOutput(PrintStream o) {
out = o;
}
public void setErr(PrintStream e) {
err = e;
}
public CommandProcessor(DebuggerInterface debugger, BufferedReader in, PrintStream out, PrintStream err) {
this.debugger = debugger;
this.agent = debugger.getAgent();
this.in = in;
this.out = out;
this.err = err;
for (int i = 0; i < commandList.length; i++) {
Command c = commandList[i];
if (commands.get(c.name) != null) {
throw new InternalError(c.name + " has multiple definitions");
}
commands.put(c.name, c);
}
if (debugger.isAttached()) {
postAttach();
}
}
public void run(boolean prompt) {
// Process interactive commands.
while (!quit) {
if (prompt) printPrompt();
String ln = null;
try {
ln = in.readLine();
} catch (IOException e) {
}
if (ln == null) {
if (prompt) err.println("Input stream closed.");
return;
}
executeCommand(ln, prompt);
}
}
static Pattern historyPattern = Pattern.compile("([\\\\]?)((!\\*)|(!\\$)|(!!-?)|(!-?[0-9][0-9]*)|(![a-zA-Z][^ ]*))");
public void executeCommand(String ln, boolean putInHistory) {
if (ln.indexOf('!') != -1) {
int size = history.size();
if (size == 0) {
ln = "";
err.println("History is empty");
} else {
StringBuilder result = new StringBuilder();
Matcher m = historyPattern.matcher(ln);
int start = 0;
while (m.find()) {
// Capture the text preceding the matched text.
if (m.start() > start) {
result.append(ln.substring(start, m.start()));
}
start = m.end();
if (m.group(1).length() != 0) {
// This means we matched a `\` before the '!'. Don't do any history
// expansion in this case. Just capture what matched after the `\`.
result.append(m.group(2));
continue;
}
String cmd = m.group(2);
if (cmd.equals("!!")) {
result.append((String)history.get(history.size() - 1));
} else if (cmd.equals("!!-")) {
Tokens item = new Tokens((String)history.get(history.size() - 1));
item.trim(1);
result.append(item.join(" "));
} else if (cmd.equals("!*")) {
Tokens item = new Tokens((String)history.get(history.size() - 1));
item.nextToken();
result.append(item.join(" "));
} else if (cmd.equals("!$")) {
Tokens item = new Tokens((String)history.get(history.size() - 1));
result.append(item.at(item.countTokens() - 1));
} else {
String tail = cmd.substring(1);
switch (tail.charAt(0)) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '-': {
int index = Integer.parseInt(tail);
if (index < 0) {
index = history.size() + index;
}
if (index > size) {
err.println("No such history item");
} else {
result.append((String)history.get(index));
}
break;
}
default: {
for (int i = history.size() - 1; i >= 0; i--) {
String s = (String)history.get(i);
if (s.startsWith(tail)) {
result.append(s);
break; // only capture the most recent match in the history
}
}
}
}
}
}
if (result.length() == 0) {
err.println("malformed history reference");
ln = "";
} else {
if (start < ln.length()) {
result.append(ln.substring(start));
}
ln = result.toString();
if (!doEcho) {
out.println(ln);
}
}
}
}
if (doEcho) {
out.println("+ " + ln);
}
PrintStream redirect = null;
Tokens t = new Tokens(ln);
if (t.hasMoreTokens()) {
boolean error = false;
if (putInHistory) history.add(ln);
int len = t.countTokens();
if (len > 2) {
String r = t.at(len - 2);
if (r.equals(">") || r.equals(">>")) {
boolean append = r.length() == 2;
String file = t.at(len - 1);
try {
redirect = new PrintStream(new BufferedOutputStream(new FileOutputStream(file, append)));
t.trim(2);
} catch (Exception e) {
out.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(out);
}
error = true;
}
}
}
if (!error) {
PrintStream savedout = out;
if (redirect != null) {
out = redirect;
}
try {
executeCommand(t);
} catch (Exception e) {
err.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(err);
}
} finally {
if (redirect != null) {
out = savedout;
redirect.close();
}
}
}
}
}
void executeCommand(Tokens args) {
String cmd = args.nextToken();
Command doit = findCommand(cmd);
/*
* Check for an unknown command
*/
if (doit == null) {
out.println("Unrecognized command. Try help...");
} else if (!debugger.isAttached() && !doit.okIfDisconnected) {
out.println("Command not valid until attached to a VM");
} else {
try {
doit.doit(args);
} catch (Exception e) {
out.println("Error: " + e);
if (verboseExceptions) {
e.printStackTrace(out);
}
}
}
}
/* Parse compression level
* @return 1-9 compression level
* 0 compression level is illegal
*/
private int parseHeapDumpCompressionLevel(String option) {
String[] keyValue = option.split("=");
if (!keyValue[0].equals("gz")) {
err.println("Expected option is \"gz=\"");
return 0;
}
if (keyValue.length != 2) {
err.println("Exactly one argument is expected for option \"gz\"");
return 0;
}
int gzl = 0;
String level = keyValue[1];
try {
gzl = Integer.parseInt(level);
} catch (NumberFormatException e) {
err.println("gz option value not an integer ("+level+")");
return 0;
}
if (gzl < 1 || gzl > 9) {
err.println("Compression level out of range (1-9): " + level);
return 0;
}
return gzl;
}
}
⏎ sun/jvm/hotspot/CommandProcessor.java
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