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The TTY.java Java example source code
/*
* Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* This source code is provided to illustrate the usage of a given feature
* or technique and has been deliberately simplified. Additional steps
* required for a production-quality application, such as security checks,
* input validation and proper error handling, might not be present in
* this sample code.
*/
package com.sun.tools.example.debug.tty;
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;
import com.sun.jdi.connect.*;
import java.util.*;
import java.io.*;
public class TTY implements EventNotifier {
EventHandler handler = null;
/**
* List of Strings to execute at each stop.
*/
private List<String> monitorCommands = new ArrayList();
private int monitorCount = 0;
/**
* The name of this tool.
*/
private static final String progname = "jdb";
@Override
public void vmStartEvent(VMStartEvent se) {
Thread.yield(); // fetch output
MessageOutput.lnprint("VM Started:");
}
@Override
public void vmDeathEvent(VMDeathEvent e) {
}
@Override
public void vmDisconnectEvent(VMDisconnectEvent e) {
}
@Override
public void threadStartEvent(ThreadStartEvent e) {
}
@Override
public void threadDeathEvent(ThreadDeathEvent e) {
}
@Override
public void classPrepareEvent(ClassPrepareEvent e) {
}
@Override
public void classUnloadEvent(ClassUnloadEvent e) {
}
@Override
public void breakpointEvent(BreakpointEvent be) {
Thread.yield(); // fetch output
MessageOutput.lnprint("Breakpoint hit:");
}
@Override
public void fieldWatchEvent(WatchpointEvent fwe) {
Field field = fwe.field();
ObjectReference obj = fwe.object();
Thread.yield(); // fetch output
if (fwe instanceof ModificationWatchpointEvent) {
MessageOutput.lnprint("Field access encountered before after",
new Object [] {field,
fwe.valueCurrent(),
((ModificationWatchpointEvent)fwe).valueToBe()});
} else {
MessageOutput.lnprint("Field access encountered", field.toString());
}
}
@Override
public void stepEvent(StepEvent se) {
Thread.yield(); // fetch output
MessageOutput.lnprint("Step completed:");
}
@Override
public void exceptionEvent(ExceptionEvent ee) {
Thread.yield(); // fetch output
Location catchLocation = ee.catchLocation();
if (catchLocation == null) {
MessageOutput.lnprint("Exception occurred uncaught",
ee.exception().referenceType().name());
} else {
MessageOutput.lnprint("Exception occurred caught",
new Object [] {ee.exception().referenceType().name(),
Commands.locationString(catchLocation)});
}
}
@Override
public void methodEntryEvent(MethodEntryEvent me) {
Thread.yield(); // fetch output
/*
* These can be very numerous, so be as efficient as possible.
* If we are stopping here, then we will see the normal location
* info printed.
*/
if (me.request().suspendPolicy() != EventRequest.SUSPEND_NONE) {
// We are stopping; the name will be shown by the normal mechanism
MessageOutput.lnprint("Method entered:");
} else {
// We aren't stopping, show the name
MessageOutput.print("Method entered:");
printLocationOfEvent(me);
}
}
@Override
public boolean methodExitEvent(MethodExitEvent me) {
Thread.yield(); // fetch output
/*
* These can be very numerous, so be as efficient as possible.
*/
Method mmm = Env.atExitMethod();
Method meMethod = me.method();
if (mmm == null || mmm.equals(meMethod)) {
// Either we are not tracing a specific method, or we are
// and we are exitting that method.
if (me.request().suspendPolicy() != EventRequest.SUSPEND_NONE) {
// We will be stopping here, so do a newline
MessageOutput.println();
}
if (Env.vm().canGetMethodReturnValues()) {
MessageOutput.print("Method exitedValue:", me.returnValue() + "");
} else {
MessageOutput.print("Method exited:");
}
if (me.request().suspendPolicy() == EventRequest.SUSPEND_NONE) {
// We won't be stopping here, so show the method name
printLocationOfEvent(me);
}
// In case we want to have a one shot trace exit some day, this
// code disables the request so we don't hit it again.
if (false) {
// This is a one shot deal; we don't want to stop
// here the next time.
Env.setAtExitMethod(null);
EventRequestManager erm = Env.vm().eventRequestManager();
for (EventRequest eReq : erm.methodExitRequests()) {
if (eReq.equals(me.request())) {
eReq.disable();
}
}
}
return true;
}
// We are tracing a specific method, and this isn't it. Keep going.
return false;
}
@Override
public void vmInterrupted() {
Thread.yield(); // fetch output
printCurrentLocation();
for (String cmd : monitorCommands) {
StringTokenizer t = new StringTokenizer(cmd);
t.nextToken(); // get rid of monitor number
executeCommand(t);
}
MessageOutput.printPrompt();
}
@Override
public void receivedEvent(Event event) {
}
private void printBaseLocation(String threadName, Location loc) {
MessageOutput.println("location",
new Object [] {threadName,
Commands.locationString(loc)});
}
private void printCurrentLocation() {
ThreadInfo threadInfo = ThreadInfo.getCurrentThreadInfo();
StackFrame frame;
try {
frame = threadInfo.getCurrentFrame();
} catch (IncompatibleThreadStateException exc) {
MessageOutput.println("<location unavailable>");
return;
}
if (frame == null) {
MessageOutput.println("No frames on the current call stack");
} else {
Location loc = frame.location();
printBaseLocation(threadInfo.getThread().name(), loc);
// Output the current source line, if possible
if (loc.lineNumber() != -1) {
String line;
try {
line = Env.sourceLine(loc, loc.lineNumber());
} catch (java.io.IOException e) {
line = null;
}
if (line != null) {
MessageOutput.println("source line number and line",
new Object [] {new Integer(loc.lineNumber()),
line});
}
}
}
MessageOutput.println();
}
private void printLocationOfEvent(LocatableEvent theEvent) {
printBaseLocation(theEvent.thread().name(), theEvent.location());
}
void help() {
MessageOutput.println("zz help text");
}
private static final String[][] commandList = {
/*
* NOTE: this list must be kept sorted in ascending ASCII
* order by element [0]. Ref: isCommand() below.
*
*Command OK when OK when
* name disconnected? readonly?
*------------------------------------
*/
{"!!", "n", "y"},
{"?", "y", "y"},
{"bytecodes", "n", "y"},
{"catch", "y", "n"},
{"class", "n", "y"},
{"classes", "n", "y"},
{"classpath", "n", "y"},
{"clear", "y", "n"},
{"connectors", "y", "y"},
{"cont", "n", "n"},
{"disablegc", "n", "n"},
{"down", "n", "y"},
{"dump", "n", "y"},
{"enablegc", "n", "n"},
{"eval", "n", "y"},
{"exclude", "y", "n"},
{"exit", "y", "y"},
{"extension", "n", "y"},
{"fields", "n", "y"},
{"gc", "n", "n"},
{"help", "y", "y"},
{"ignore", "y", "n"},
{"interrupt", "n", "n"},
{"kill", "n", "n"},
{"lines", "n", "y"},
{"list", "n", "y"},
{"load", "n", "y"},
{"locals", "n", "y"},
{"lock", "n", "n"},
{"memory", "n", "y"},
{"methods", "n", "y"},
{"monitor", "n", "n"},
{"next", "n", "n"},
{"pop", "n", "n"},
{"print", "n", "y"},
{"quit", "y", "y"},
{"read", "y", "y"},
{"redefine", "n", "n"},
{"reenter", "n", "n"},
{"resume", "n", "n"},
{"run", "y", "n"},
{"save", "n", "n"},
{"set", "n", "n"},
{"sourcepath", "y", "y"},
{"step", "n", "n"},
{"stepi", "n", "n"},
{"stop", "y", "n"},
{"suspend", "n", "n"},
{"thread", "n", "y"},
{"threadgroup", "n", "y"},
{"threadgroups", "n", "y"},
{"threadlocks", "n", "y"},
{"threads", "n", "y"},
{"trace", "n", "n"},
{"unmonitor", "n", "n"},
{"untrace", "n", "n"},
{"unwatch", "y", "n"},
{"up", "n", "y"},
{"use", "y", "y"},
{"version", "y", "y"},
{"watch", "y", "n"},
{"where", "n", "y"},
{"wherei", "n", "y"},
};
/*
* Look up the command string in commandList.
* If found, return the index.
* If not found, return index < 0
*/
private int isCommand(String key) {
//Reference: binarySearch() in java/util/Arrays.java
// Adapted for use with String[][0].
int low = 0;
int high = commandList.length - 1;
while (low <= high) {
int mid = (low + high) >>> 1;
String midVal = commandList[mid][0];
int compare = midVal.compareTo(key);
if (compare < 0) {
low = mid + 1;
} else if (compare > 0) {
high = mid - 1;
}
else {
return mid; // key found
}
}
return -(low + 1); // key not found.
};
/*
* Return true if the command is OK when disconnected.
*/
private boolean isDisconnectCmd(int ii) {
if (ii < 0 || ii >= commandList.length) {
return false;
}
return (commandList[ii][1].equals("y"));
}
/*
* Return true if the command is OK when readonly.
*/
private boolean isReadOnlyCmd(int ii) {
if (ii < 0 || ii >= commandList.length) {
return false;
}
return (commandList[ii][2].equals("y"));
};
void executeCommand(StringTokenizer t) {
String cmd = t.nextToken().toLowerCase();
// Normally, prompt for the next command after this one is done
boolean showPrompt = true;
/*
* Anything starting with # is discarded as a no-op or 'comment'.
*/
if (!cmd.startsWith("#")) {
/*
* Next check for an integer repetition prefix. If found,
* recursively execute cmd that number of times.
*/
if (Character.isDigit(cmd.charAt(0)) && t.hasMoreTokens()) {
try {
int repeat = Integer.parseInt(cmd);
String subcom = t.nextToken("");
while (repeat-- > 0) {
executeCommand(new StringTokenizer(subcom));
showPrompt = false; // Bypass the printPrompt() below.
}
} catch (NumberFormatException exc) {
MessageOutput.println("Unrecognized command. Try help...", cmd);
}
} else {
int commandNumber = isCommand(cmd);
/*
* Check for an unknown command
*/
if (commandNumber < 0) {
MessageOutput.println("Unrecognized command. Try help...", cmd);
} else if (!Env.connection().isOpen() && !isDisconnectCmd(commandNumber)) {
MessageOutput.println("Command not valid until the VM is started with the run command",
cmd);
} else if (Env.connection().isOpen() && !Env.vm().canBeModified() &&
!isReadOnlyCmd(commandNumber)) {
MessageOutput.println("Command is not supported on a read-only VM connection",
cmd);
} else {
Commands evaluator = new Commands();
try {
if (cmd.equals("print")) {
evaluator.commandPrint(t, false);
showPrompt = false; // asynchronous command
} else if (cmd.equals("eval")) {
evaluator.commandPrint(t, false);
showPrompt = false; // asynchronous command
} else if (cmd.equals("set")) {
evaluator.commandSet(t);
showPrompt = false; // asynchronous command
} else if (cmd.equals("dump")) {
evaluator.commandPrint(t, true);
showPrompt = false; // asynchronous command
} else if (cmd.equals("locals")) {
evaluator.commandLocals();
} else if (cmd.equals("classes")) {
evaluator.commandClasses();
} else if (cmd.equals("class")) {
evaluator.commandClass(t);
} else if (cmd.equals("connectors")) {
evaluator.commandConnectors(Bootstrap.virtualMachineManager());
} else if (cmd.equals("methods")) {
evaluator.commandMethods(t);
} else if (cmd.equals("fields")) {
evaluator.commandFields(t);
} else if (cmd.equals("threads")) {
evaluator.commandThreads(t);
} else if (cmd.equals("thread")) {
evaluator.commandThread(t);
} else if (cmd.equals("suspend")) {
evaluator.commandSuspend(t);
} else if (cmd.equals("resume")) {
evaluator.commandResume(t);
} else if (cmd.equals("cont")) {
evaluator.commandCont();
} else if (cmd.equals("threadgroups")) {
evaluator.commandThreadGroups();
} else if (cmd.equals("threadgroup")) {
evaluator.commandThreadGroup(t);
} else if (cmd.equals("catch")) {
evaluator.commandCatchException(t);
} else if (cmd.equals("ignore")) {
evaluator.commandIgnoreException(t);
} else if (cmd.equals("step")) {
evaluator.commandStep(t);
} else if (cmd.equals("stepi")) {
evaluator.commandStepi();
} else if (cmd.equals("next")) {
evaluator.commandNext();
} else if (cmd.equals("kill")) {
evaluator.commandKill(t);
} else if (cmd.equals("interrupt")) {
evaluator.commandInterrupt(t);
} else if (cmd.equals("trace")) {
evaluator.commandTrace(t);
} else if (cmd.equals("untrace")) {
evaluator.commandUntrace(t);
} else if (cmd.equals("where")) {
evaluator.commandWhere(t, false);
} else if (cmd.equals("wherei")) {
evaluator.commandWhere(t, true);
} else if (cmd.equals("up")) {
evaluator.commandUp(t);
} else if (cmd.equals("down")) {
evaluator.commandDown(t);
} else if (cmd.equals("load")) {
evaluator.commandLoad(t);
} else if (cmd.equals("run")) {
evaluator.commandRun(t);
/*
* Fire up an event handler, if the connection was just
* opened. Since this was done from the run command
* we don't stop the VM on its VM start event (so
* arg 2 is false).
*/
if ((handler == null) && Env.connection().isOpen()) {
handler = new EventHandler(this, false);
}
} else if (cmd.equals("memory")) {
evaluator.commandMemory();
} else if (cmd.equals("gc")) {
evaluator.commandGC();
} else if (cmd.equals("stop")) {
evaluator.commandStop(t);
} else if (cmd.equals("clear")) {
evaluator.commandClear(t);
} else if (cmd.equals("watch")) {
evaluator.commandWatch(t);
} else if (cmd.equals("unwatch")) {
evaluator.commandUnwatch(t);
} else if (cmd.equals("list")) {
evaluator.commandList(t);
} else if (cmd.equals("lines")) { // Undocumented command: useful for testing.
evaluator.commandLines(t);
} else if (cmd.equals("classpath")) {
evaluator.commandClasspath(t);
} else if (cmd.equals("use") || cmd.equals("sourcepath")) {
evaluator.commandUse(t);
} else if (cmd.equals("monitor")) {
monitorCommand(t);
} else if (cmd.equals("unmonitor")) {
unmonitorCommand(t);
} else if (cmd.equals("lock")) {
evaluator.commandLock(t);
showPrompt = false; // asynchronous command
} else if (cmd.equals("threadlocks")) {
evaluator.commandThreadlocks(t);
} else if (cmd.equals("disablegc")) {
evaluator.commandDisableGC(t);
showPrompt = false; // asynchronous command
} else if (cmd.equals("enablegc")) {
evaluator.commandEnableGC(t);
showPrompt = false; // asynchronous command
} else if (cmd.equals("save")) { // Undocumented command: useful for testing.
evaluator.commandSave(t);
showPrompt = false; // asynchronous command
} else if (cmd.equals("bytecodes")) { // Undocumented command: useful for testing.
evaluator.commandBytecodes(t);
} else if (cmd.equals("redefine")) {
evaluator.commandRedefine(t);
} else if (cmd.equals("pop")) {
evaluator.commandPopFrames(t, false);
} else if (cmd.equals("reenter")) {
evaluator.commandPopFrames(t, true);
} else if (cmd.equals("extension")) {
evaluator.commandExtension(t);
} else if (cmd.equals("exclude")) {
evaluator.commandExclude(t);
} else if (cmd.equals("read")) {
readCommand(t);
} else if (cmd.equals("help") || cmd.equals("?")) {
help();
} else if (cmd.equals("version")) {
evaluator.commandVersion(progname,
Bootstrap.virtualMachineManager());
} else if (cmd.equals("quit") || cmd.equals("exit")) {
if (handler != null) {
handler.shutdown();
}
Env.shutdown();
} else {
MessageOutput.println("Unrecognized command. Try help...", cmd);
}
} catch (VMCannotBeModifiedException rovm) {
MessageOutput.println("Command is not supported on a read-only VM connection", cmd);
} catch (UnsupportedOperationException uoe) {
MessageOutput.println("Command is not supported on the target VM", cmd);
} catch (VMNotConnectedException vmnse) {
MessageOutput.println("Command not valid until the VM is started with the run command",
cmd);
} catch (Exception e) {
MessageOutput.printException("Internal exception:", e);
}
}
}
}
if (showPrompt) {
MessageOutput.printPrompt();
}
}
/*
* Maintain a list of commands to execute each time the VM is suspended.
*/
void monitorCommand(StringTokenizer t) {
if (t.hasMoreTokens()) {
++monitorCount;
monitorCommands.add(monitorCount + ": " + t.nextToken(""));
} else {
for (String cmd : monitorCommands) {
MessageOutput.printDirectln(cmd);// Special case: use printDirectln()
}
}
}
void unmonitorCommand(StringTokenizer t) {
if (t.hasMoreTokens()) {
String monTok = t.nextToken();
int monNum;
try {
monNum = Integer.parseInt(monTok);
} catch (NumberFormatException exc) {
MessageOutput.println("Not a monitor number:", monTok);
return;
}
String monStr = monTok + ":";
for (String cmd : monitorCommands) {
StringTokenizer ct = new StringTokenizer(cmd);
if (ct.nextToken().equals(monStr)) {
monitorCommands.remove(cmd);
MessageOutput.println("Unmonitoring", cmd);
return;
}
}
MessageOutput.println("No monitor numbered:", monTok);
} else {
MessageOutput.println("Usage: unmonitor <monitor#>");
}
}
void readCommand(StringTokenizer t) {
if (t.hasMoreTokens()) {
String cmdfname = t.nextToken();
if (!readCommandFile(new File(cmdfname))) {
MessageOutput.println("Could not open:", cmdfname);
}
} else {
MessageOutput.println("Usage: read <command-filename>");
}
}
/**
* Read and execute a command file. Return true if the file was read
* else false;
*/
boolean readCommandFile(File f) {
BufferedReader inFile = null;
try {
if (f.canRead()) {
// Process initial commands.
MessageOutput.println("*** Reading commands from", f.getPath());
inFile = new BufferedReader(new FileReader(f));
String ln;
while ((ln = inFile.readLine()) != null) {
StringTokenizer t = new StringTokenizer(ln);
if (t.hasMoreTokens()) {
executeCommand(t);
}
}
}
} catch (IOException e) {
} finally {
if (inFile != null) {
try {
inFile.close();
} catch (Exception exc) {
}
}
}
return inFile != null;
}
/**
* Try to read commands from dir/fname, unless
* the canonical path passed in is the same as that
* for dir/fname.
* Return null if that file doesn't exist,
* else return the canonical path of that file.
*/
String readStartupCommandFile(String dir, String fname, String canonPath) {
File dotInitFile = new File(dir, fname);
if (!dotInitFile.exists()) {
return null;
}
String myCanonFile;
try {
myCanonFile = dotInitFile.getCanonicalPath();
} catch (IOException ee) {
MessageOutput.println("Could not open:", dotInitFile.getPath());
return null;
}
if (canonPath == null || !canonPath.equals(myCanonFile)) {
if (!readCommandFile(dotInitFile)) {
MessageOutput.println("Could not open:", dotInitFile.getPath());
}
}
return myCanonFile;
}
public TTY() throws Exception {
MessageOutput.println("Initializing progname", progname);
if (Env.connection().isOpen() && Env.vm().canBeModified()) {
/*
* Connection opened on startup. Start event handler
* immediately, telling it (through arg 2) to stop on the
* VM start event.
*/
this.handler = new EventHandler(this, true);
}
try {
BufferedReader in =
new BufferedReader(new InputStreamReader(System.in));
String lastLine = null;
Thread.currentThread().setPriority(Thread.NORM_PRIORITY);
/*
* Read start up files. This mimics the behavior
* of gdb which will read both ~/.gdbinit and then
* ./.gdbinit if they exist. We have the twist that
* we allow two different names, so we do this:
* if ~/jdb.ini exists,
* read it
* else if ~/.jdbrc exists,
* read it
*
* if ./jdb.ini exists,
* if it hasn't been read, read it
* It could have been read above because ~ == .
* or because of symlinks, ...
* else if ./jdbrx exists
* if it hasn't been read, read it
*/
{
String userHome = System.getProperty("user.home");
String canonPath;
if ((canonPath = readStartupCommandFile(userHome, "jdb.ini", null)) == null) {
// Doesn't exist, try alternate spelling
canonPath = readStartupCommandFile(userHome, ".jdbrc", null);
}
String userDir = System.getProperty("user.dir");
if (readStartupCommandFile(userDir, "jdb.ini", canonPath) == null) {
// Doesn't exist, try alternate spelling
readStartupCommandFile(userDir, ".jdbrc", canonPath);
}
}
// Process interactive commands.
MessageOutput.printPrompt();
while (true) {
String ln = in.readLine();
if (ln == null) {
MessageOutput.println("Input stream closed.");
ln = "quit";
}
if (ln.startsWith("!!") && lastLine != null) {
ln = lastLine + ln.substring(2);
MessageOutput.printDirectln(ln);// Special case: use printDirectln()
}
StringTokenizer t = new StringTokenizer(ln);
if (t.hasMoreTokens()) {
lastLine = ln;
executeCommand(t);
} else {
MessageOutput.printPrompt();
}
}
} catch (VMDisconnectedException e) {
handler.handleDisconnectedException();
}
}
private static void usage() {
MessageOutput.println("zz usage text", new Object [] {progname,
File.pathSeparator});
System.exit(1);
}
static void usageError(String messageKey) {
MessageOutput.println(messageKey);
MessageOutput.println();
usage();
}
static void usageError(String messageKey, String argument) {
MessageOutput.println(messageKey, argument);
MessageOutput.println();
usage();
}
private static boolean supportsSharedMemory() {
for (Connector connector :
Bootstrap.virtualMachineManager().allConnectors()) {
if (connector.transport() == null) {
continue;
}
if ("dt_shmem".equals(connector.transport().name())) {
return true;
}
}
return false;
}
private static String addressToSocketArgs(String address) {
int index = address.indexOf(':');
if (index != -1) {
String hostString = address.substring(0, index);
String portString = address.substring(index + 1);
return "hostname=" + hostString + ",port=" + portString;
} else {
return "port=" + address;
}
}
private static boolean hasWhitespace(String string) {
int length = string.length();
for (int i = 0; i < length; i++) {
if (Character.isWhitespace(string.charAt(i))) {
return true;
}
}
return false;
}
private static String addArgument(String string, String argument) {
if (hasWhitespace(argument) || argument.indexOf(',') != -1) {
// Quotes were stripped out for this argument, add 'em back.
StringBuffer buffer = new StringBuffer(string);
buffer.append('"');
for (int i = 0; i < argument.length(); i++) {
char c = argument.charAt(i);
if (c == '"') {
buffer.append('\\');
}
buffer.append(c);
}
buffer.append("\" ");
return buffer.toString();
} else {
return string + argument + ' ';
}
}
public static void main(String argv[]) throws MissingResourceException {
String cmdLine = "";
String javaArgs = "";
int traceFlags = VirtualMachine.TRACE_NONE;
boolean launchImmediately = false;
String connectSpec = null;
MessageOutput.textResources = ResourceBundle.getBundle
("com.sun.tools.example.debug.tty.TTYResources",
Locale.getDefault());
for (int i = 0; i < argv.length; i++) {
String token = argv[i];
if (token.equals("-dbgtrace")) {
if ((i == argv.length - 1) ||
! Character.isDigit(argv[i+1].charAt(0))) {
traceFlags = VirtualMachine.TRACE_ALL;
} else {
String flagStr = "";
try {
flagStr = argv[++i];
traceFlags = Integer.decode(flagStr).intValue();
} catch (NumberFormatException nfe) {
usageError("dbgtrace flag value must be an integer:",
flagStr);
return;
}
}
} else if (token.equals("-X")) {
usageError("Use java minus X to see");
return;
} else if (
// Standard VM options passed on
token.equals("-v") || token.startsWith("-v:") || // -v[:...]
token.startsWith("-verbose") || // -verbose[:...]
token.startsWith("-D") ||
// -classpath handled below
// NonStandard options passed on
token.startsWith("-X") ||
// Old-style options (These should remain in place as long as
// the standard VM accepts them)
token.equals("-noasyncgc") || token.equals("-prof") ||
token.equals("-verify") || token.equals("-noverify") ||
token.equals("-verifyremote") ||
token.equals("-verbosegc") ||
token.startsWith("-ms") || token.startsWith("-mx") ||
token.startsWith("-ss") || token.startsWith("-oss") ) {
javaArgs = addArgument(javaArgs, token);
} else if (token.equals("-tclassic")) {
usageError("Classic VM no longer supported.");
return;
} else if (token.equals("-tclient")) {
// -client must be the first one
javaArgs = "-client " + javaArgs;
} else if (token.equals("-tserver")) {
// -server must be the first one
javaArgs = "-server " + javaArgs;
} else if (token.equals("-sourcepath")) {
if (i == (argv.length - 1)) {
usageError("No sourcepath specified.");
return;
}
Env.setSourcePath(argv[++i]);
} else if (token.equals("-classpath")) {
if (i == (argv.length - 1)) {
usageError("No classpath specified.");
return;
}
javaArgs = addArgument(javaArgs, token);
javaArgs = addArgument(javaArgs, argv[++i]);
} else if (token.equals("-attach")) {
if (connectSpec != null) {
usageError("cannot redefine existing connection", token);
return;
}
if (i == (argv.length - 1)) {
usageError("No attach address specified.");
return;
}
String address = argv[++i];
/*
* -attach is shorthand for one of the reference implementation's
* attaching connectors. Use the shared memory attach if it's
* available; otherwise, use sockets. Build a connect
* specification string based on this decision.
*/
if (supportsSharedMemory()) {
connectSpec = "com.sun.jdi.SharedMemoryAttach:name=" +
address;
} else {
String suboptions = addressToSocketArgs(address);
connectSpec = "com.sun.jdi.SocketAttach:" + suboptions;
}
} else if (token.equals("-listen") || token.equals("-listenany")) {
if (connectSpec != null) {
usageError("cannot redefine existing connection", token);
return;
}
String address = null;
if (token.equals("-listen")) {
if (i == (argv.length - 1)) {
usageError("No attach address specified.");
return;
}
address = argv[++i];
}
/*
* -listen[any] is shorthand for one of the reference implementation's
* listening connectors. Use the shared memory listen if it's
* available; otherwise, use sockets. Build a connect
* specification string based on this decision.
*/
if (supportsSharedMemory()) {
connectSpec = "com.sun.jdi.SharedMemoryListen:";
if (address != null) {
connectSpec += ("name=" + address);
}
} else {
connectSpec = "com.sun.jdi.SocketListen:";
if (address != null) {
connectSpec += addressToSocketArgs(address);
}
}
} else if (token.equals("-launch")) {
launchImmediately = true;
} else if (token.equals("-listconnectors")) {
Commands evaluator = new Commands();
evaluator.commandConnectors(Bootstrap.virtualMachineManager());
return;
} else if (token.equals("-connect")) {
/*
* -connect allows the user to pick the connector
* used in bringing up the target VM. This allows
* use of connectors other than those in the reference
* implementation.
*/
if (connectSpec != null) {
usageError("cannot redefine existing connection", token);
return;
}
if (i == (argv.length - 1)) {
usageError("No connect specification.");
return;
}
connectSpec = argv[++i];
} else if (token.equals("-help")) {
usage();
} else if (token.equals("-version")) {
Commands evaluator = new Commands();
evaluator.commandVersion(progname,
Bootstrap.virtualMachineManager());
System.exit(0);
} else if (token.startsWith("-")) {
usageError("invalid option", token);
return;
} else {
// Everything from here is part of the command line
cmdLine = addArgument("", token);
for (i++; i < argv.length; i++) {
cmdLine = addArgument(cmdLine, argv[i]);
}
break;
}
}
/*
* Unless otherwise specified, set the default connect spec.
*/
/*
* Here are examples of jdb command lines and how the options
* are interpreted as arguments to the program being debugged.
* arg1 arg2
* ---- ----
* jdb hello a b a b
* jdb hello "a b" a b
* jdb hello a,b a,b
* jdb hello a, b a, b
* jdb hello "a, b" a, b
* jdb -connect "com.sun.jdi.CommandLineLaunch:main=hello a,b" illegal
* jdb -connect com.sun.jdi.CommandLineLaunch:main=hello "a,b" illegal
* jdb -connect 'com.sun.jdi.CommandLineLaunch:main=hello "a,b"' arg1 = a,b
* jdb -connect 'com.sun.jdi.CommandLineLaunch:main=hello "a b"' arg1 = a b
* jdb -connect 'com.sun.jdi.CommandLineLaunch:main=hello a b' arg1 = a arg2 = b
* jdb -connect 'com.sun.jdi.CommandLineLaunch:main=hello "a," b' arg1 = a, arg2 = b
*/
if (connectSpec == null) {
connectSpec = "com.sun.jdi.CommandLineLaunch:";
} else if (!connectSpec.endsWith(",") && !connectSpec.endsWith(":")) {
connectSpec += ","; // (Bug ID 4285874)
}
cmdLine = cmdLine.trim();
javaArgs = javaArgs.trim();
if (cmdLine.length() > 0) {
if (!connectSpec.startsWith("com.sun.jdi.CommandLineLaunch:")) {
usageError("Cannot specify command line with connector:",
connectSpec);
return;
}
connectSpec += "main=" + cmdLine + ",";
}
if (javaArgs.length() > 0) {
if (!connectSpec.startsWith("com.sun.jdi.CommandLineLaunch:")) {
usageError("Cannot specify target vm arguments with connector:",
connectSpec);
return;
}
connectSpec += "options=" + javaArgs + ",";
}
try {
if (! connectSpec.endsWith(",")) {
connectSpec += ","; // (Bug ID 4285874)
}
Env.init(connectSpec, launchImmediately, traceFlags);
new TTY();
} catch(Exception e) {
MessageOutput.printException("Internal exception:", e);
}
}
}
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