/* attach to running target vm */
private VirtualMachine attachTarget() {
AttachingConnector attacher = (AttachingConnector) connector;
try {
return attacher.attach(connectorArgs);
} catch (IOException ioe) {
ioe.printStackTrace();
MessageOutput.fatalError("Unable to attach to target VM.");
} catch (IllegalConnectorArgumentsException icae) {
icae.printStackTrace();
MessageOutput.fatalError("Internal debugger error.");
}
return null; // Shuts up the compiler
}
static void shutdown(String message) {
if (connection != null) {
try {
connection.disposeVM();
} catch (VMDisconnectedException e) {
// Shutting down after the VM has gone away. This is
// not an error, and we just ignore it.
}
}
if (message != null) {
MessageOutput.lnprint(message);
MessageOutput.println();
}
System.exit(0);
}
synchronized VirtualMachine open() {
if (connector instanceof LaunchingConnector) {
vm = launchTarget();
} else if (connector instanceof AttachingConnector) {
vm = attachTarget();
} else if (connector instanceof ListeningConnector) {
vm = listenTarget();
} else {
throw new InternalError(MessageOutput.format("Invalid connect type"));
}
vm.setDebugTraceMode(traceFlags);
if (vm.canBeModified()) {
setEventRequests(vm);
resolveEventRequests();
}
/*
* Now that the vm connection is open, fetch the debugee
* classpath and set up a default sourcepath.
* (Unless user supplied a sourcepath on the command line)
* (Bug ID 4186582)
*/
if (Env.getSourcePath().length() == 0) {
if (vm instanceof PathSearchingVirtualMachine) {
PathSearchingVirtualMachine psvm = (PathSearchingVirtualMachine) vm;
Env.setSourcePath(psvm.classPath());
} else {
Env.setSourcePath(".");
}
}
return vm;
}
/* listen for connection from target vm */
private VirtualMachine listenTarget() {
ListeningConnector listener = (ListeningConnector) connector;
try {
String retAddress = listener.startListening(connectorArgs);
MessageOutput.println("Listening at address:", retAddress);
vm = listener.accept(connectorArgs);
listener.stopListening(connectorArgs);
return vm;
} catch (IOException ioe) {
ioe.printStackTrace();
MessageOutput.fatalError("Unable to attach to target VM.");
} catch (IllegalConnectorArgumentsException icae) {
icae.printStackTrace();
MessageOutput.fatalError("Internal debugger error.");
}
return null; // Shuts up the compiler
}
private void dumpFailedLaunchInfo(Process process) {
try {
dumpStream(process.getErrorStream());
dumpStream(process.getInputStream());
} catch (IOException e) {
MessageOutput.println("Unable to display process output:", e.getMessage());
}
}
/** Return a description of an object. */
static String description(ObjectReference ref) {
ReferenceType clazz = ref.referenceType();
long id = ref.uniqueID();
if (clazz == null) {
return toHex(id);
} else {
return MessageOutput.format(
"object description and hex id", new Object[] {clazz.name(), toHex(id)});
}
}
static void removeThread(ThreadReference thread) {
if (thread.equals(ThreadInfo.current)) {
// Current thread has died.
// Be careful getting the thread name. If its death happens
// as part of VM termination, it may be too late to get the
// information, and an exception will be thrown.
String currentThreadName;
try {
currentThreadName = "\"" + thread.name() + "\"";
} catch (Exception e) {
currentThreadName = "";
}
setCurrentThread(null);
MessageOutput.println();
MessageOutput.println("Current thread died. Execution continuing...", currentThreadName);
}
threads.remove(getThreadInfo(thread));
}
/* launch child target vm */
private VirtualMachine launchTarget() {
LaunchingConnector launcher = (LaunchingConnector) connector;
try {
VirtualMachine vm = launcher.launch(connectorArgs);
process = vm.process();
displayRemoteOutput(process.getErrorStream());
displayRemoteOutput(process.getInputStream());
return vm;
} catch (IOException ioe) {
ioe.printStackTrace();
MessageOutput.fatalError("Unable to launch target VM.");
} catch (IllegalConnectorArgumentsException icae) {
icae.printStackTrace();
MessageOutput.fatalError("Internal debugger error.");
} catch (VMStartException vmse) {
MessageOutput.println("vmstartexception", vmse.getMessage());
MessageOutput.println();
dumpFailedLaunchInfo(vmse.process());
MessageOutput.fatalError("Target VM failed to initialize.");
}
return null; // Shuts up the compiler
}
private void dumpStream(InputStream stream) throws IOException {
BufferedReader in = new BufferedReader(new InputStreamReader(stream));
int i;
try {
while ((i = in.read()) != -1) {
MessageOutput.printDirect((char) i); // Special case: use
// printDirect()
}
} catch (IOException ex) {
String s = ex.getMessage();
if (!s.startsWith("Bad file number")) {
throw ex;
}
// else we got a Bad file number IOException which just means
// that the debuggee has gone away. We'll just treat it the
// same as if we got an EOF.
}
}
VMConnection(String connectSpec, int traceFlags) {
String nameString;
String argString;
int index = connectSpec.indexOf(':');
if (index == -1) {
nameString = connectSpec;
argString = "";
} else {
nameString = connectSpec.substring(0, index);
argString = connectSpec.substring(index + 1);
}
connector = findConnector(nameString);
if (connector == null) {
throw new IllegalArgumentException(MessageOutput.format("No connector named:", nameString));
}
connectorArgs = parseConnectorArgs(connector, argString);
this.traceFlags = traceFlags;
}
private Map<String, com.sun.jdi.connect.Connector.Argument> parseConnectorArgs(
Connector connector, String argString) {
Map<String, com.sun.jdi.connect.Connector.Argument> arguments = connector.defaultArguments();
/*
* We are parsing strings of the form:
* name1=value1,[name2=value2,...]
* However, the value1...valuen substrings may contain
* embedded comma(s), so make provision for quoting inside
* the value substrings. (Bug ID 4285874)
*/
String regexPattern =
"(quote=[^,]+,)|"
+ // special case for quote=.,
"(\\w+=)"
+ // name=
"(((\"[^\"]*\")|"
+ // ( "l , ue"
"('[^']*')|"
+ // 'l , ue'
"([^,'\"]+))+,)"; // v a l u e )+ ,
Pattern p = Pattern.compile(regexPattern);
Matcher m = p.matcher(argString);
while (m.find()) {
int startPosition = m.start();
int endPosition = m.end();
if (startPosition > 0) {
/*
* It is an error if parsing skips over any part of argString.
*/
throw new IllegalArgumentException(
MessageOutput.format("Illegal connector argument", argString));
}
String token = argString.substring(startPosition, endPosition);
int index = token.indexOf('=');
String name = token.substring(0, index);
String value = token.substring(index + 1, token.length() - 1); // Remove comma delimiter
/*
* for values enclosed in quotes (single and/or double quotes)
* strip off enclosing quote chars
* needed for quote enclosed delimited substrings
*/
if (name.equals("options")) {
StringBuilder sb = new StringBuilder();
for (String s : splitStringAtNonEnclosedWhiteSpace(value)) {
while (isEnclosed(s, "\"") || isEnclosed(s, "'")) {
s = s.substring(1, s.length() - 1);
}
sb.append(s);
sb.append(" ");
}
value = sb.toString();
}
Connector.Argument argument = arguments.get(name);
if (argument == null) {
throw new IllegalArgumentException(
MessageOutput.format(
"Argument is not defined for connector:", new Object[] {name, connector.name()}));
}
argument.setValue(value);
argString = argString.substring(endPosition); // Remove what was just parsed...
m = p.matcher(argString); // and parse again on what is left.
}
if ((!argString.equals(",")) && (argString.length() > 0)) {
/*
* It is an error if any part of argString is left over,
* unless it was empty to begin with.
*/
throw new IllegalArgumentException(
MessageOutput.format("Illegal connector argument", argString));
}
return arguments;
}
private static List<String> splitStringAtNonEnclosedWhiteSpace(String value)
throws IllegalArgumentException {
List<String> al = new ArrayList<String>();
char[] arr;
int startPosition = 0;
int endPosition = 0;
final char SPACE = ' ';
final char DOUBLEQ = '"';
final char SINGLEQ = '\'';
/*
* An "open" or "active" enclosing state is where
* the first valid start quote qualifier is found,
* and there is a search in progress for the
* relevant end matching quote
*
* enclosingTargetChar set to SPACE
* is used to signal a non open enclosing state
*/
char enclosingTargetChar = SPACE;
if (value == null) {
throw new IllegalArgumentException(MessageOutput.format("value string is null"));
}
// split parameter string into individual chars
arr = value.toCharArray();
for (int i = 0; i < arr.length; i++) {
switch (arr[i]) {
case SPACE:
{
// do nothing for spaces
// unless last in array
if (isLastChar(arr, i)) {
endPosition = i;
// break for substring creation
break;
}
continue;
}
case DOUBLEQ:
case SINGLEQ:
{
if (enclosingTargetChar == arr[i]) {
// potential match to close open enclosing
if (isNextCharWhitespace(arr, i)) {
// if peek next is whitespace
// then enclosing is a valid substring
endPosition = i;
// reset enclosing target char
enclosingTargetChar = SPACE;
// break for substring creation
break;
}
}
if (enclosingTargetChar == SPACE) {
// no open enclosing state
// handle as normal char
if (isPreviousCharWhitespace(arr, i)) {
startPosition = i;
// peek forward for end candidates
if (value.indexOf(arr[i], i + 1) >= 0) {
// set open enclosing state by
// setting up the target char
enclosingTargetChar = arr[i];
} else {
// no more target chars left to match
// end enclosing, handle as normal char
if (isNextCharWhitespace(arr, i)) {
endPosition = i;
// break for substring creation
break;
}
}
}
}
continue;
}
default:
{
// normal non-space, non-" and non-' chars
if (enclosingTargetChar == SPACE) {
// no open enclosing state
if (isPreviousCharWhitespace(arr, i)) {
// start of space delim substring
startPosition = i;
}
if (isNextCharWhitespace(arr, i)) {
// end of space delim substring
endPosition = i;
// break for substring creation
break;
}
}
continue;
}
}
// break's end up here
if (startPosition > endPosition) {
throw new IllegalArgumentException(MessageOutput.format("Illegal option values"));
}
// extract substring and add to List<String>
al.add(value.substring(startPosition, ++endPosition));
// set new start position
i = startPosition = endPosition;
} // for loop
return al;
}
private ThreadInfo(ThreadReference thread) {
this.thread = thread;
if (thread == null) {
MessageOutput.fatalError("Internal error: null ThreadInfo created");
}
}
public static void main(String argv[]) throws MissingResourceException {
redirectOutMessage();
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 ThreadDumper();
} catch (Exception e) {
MessageOutput.printException("Internal exception:", e);
}
}
private static void usage() {
MessageOutput.println("zz usage text", new Object[] {progname, File.pathSeparator});
System.exit(1);
}
public void vmInterrupted() {
super.vmInterrupted();
MessageOutput.printDirectln("Jacky's vmInterrupted");
StringTokenizer t = new StringTokenizer("where");
executeCommand(t);
}