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;
}
/** Second part of debugger start procedure. */
private void startDebugger() {
threadManager = new ThreadManager(this);
setBreakpoints();
updateWatches();
println(bundle.getString("CTL_Debugger_running"), STL_OUT);
setDebuggerState(DEBUGGER_RUNNING);
virtualMachine.resume();
// start refresh thread .................................................
if (debuggerThread != null) debuggerThread.stop();
debuggerThread =
new Thread(
new Runnable() {
public void run() {
for (; ; ) {
try {
Thread.sleep(5000);
} catch (InterruptedException ex) {
}
if (getState() == DEBUGGER_RUNNING) threadGroup.refresh();
}
}
},
"Debugger refresh thread"); // NOI18N
debuggerThread.setPriority(Thread.MIN_PRIORITY);
debuggerThread.start();
}
/** Go. */
public synchronized void go() throws DebuggerException {
if (virtualMachine == null) return;
setLastAction(ACTION_GO);
removeStepRequest();
virtualMachine.resume();
threadGroup.refresh();
super.go();
}
/* 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
}
public void disposeVM() {
try {
if (vm != null) {
vm.dispose();
vm = null;
}
} finally {
if (process != null) {
process.destroy();
process = null;
}
waitOutputComplete();
}
}
public void close() {
// TODO make sure stop() has already been called to exit the sketch
// TODO actually kill off the vm here
if (vm != null) {
try {
vm.exit(0);
} catch (com.sun.jdi.VMDisconnectedException vmde) {
// if the vm has disconnected on its own, ignore message
// System.out.println("harmless disconnect " + vmde.getMessage());
// TODO shouldn't need to do this, need to do more cleanup
}
vm = null;
}
}
/** Disconnects from running debugged process. */
public void disconnect() throws DebuggerException {
if (breakpointMain != null) {
for (int x = 0; x < breakpointMain.length; x++) breakpointMain[x].remove();
breakpointMain = null;
}
try {
if (virtualMachine != null) virtualMachine.dispose();
} catch (VMDisconnectedException e) {
}
if (threadManager != null) threadManager.finish();
if (debuggerThread != null) {
debuggerThread.interrupt();
debuggerThread.stop();
}
super.finishDebugger();
}
/** Step out. */
public synchronized void stepOut() throws DebuggerException {
if (virtualMachine == null) return;
removeStepRequest();
try {
setLastAction(ACTION_STEP_OUT);
stepRequest =
requestManager.createStepRequest(
currentThread.getThreadReference(), StepRequest.STEP_LINE, StepRequest.STEP_OUT);
stepRequest.addCountFilter(1);
stepRequest.setSuspendPolicy(EventRequest.SUSPEND_ALL);
operator.register(stepRequest, this);
stepRequest.enable();
virtualMachine.resume();
super.stepOut();
} catch (DuplicateRequestException e) {
e.printStackTrace();
}
}
private void setEventRequests(VirtualMachine vm) {
EventRequestManager erm = vm.eventRequestManager();
// Normally, we want all uncaught exceptions. We request them
// via the same mechanism as Commands.commandCatchException()
// so the user can ignore them later if they are not
// interested.
// FIXME: this works but generates spurious messages on stdout
// during startup:
// Set uncaught java.lang.Throwable
// Set deferred uncaught java.lang.Throwable
Commands evaluator = new Commands();
evaluator.commandCatchException(new StringTokenizer("uncaught java.lang.Throwable"));
ThreadStartRequest tsr = erm.createThreadStartRequest();
tsr.enable();
ThreadDeathRequest tdr = erm.createThreadDeathRequest();
tdr.enable();
}
/**
* Generate the trace. Enable events, start thread to display events, start threads to forward
* remote error and output streams, resume the remote VM, wait for the final event, and shutdown.
*/
protected void generateTrace() {
// vm.setDebugTraceMode(debugTraceMode);
// vm.setDebugTraceMode(VirtualMachine.TRACE_ALL);
// vm.setDebugTraceMode(VirtualMachine.TRACE_NONE); // formerly, seems to have no effect
// For internal debugging
PrintWriter writer = null;
// Calling this seems to set something internally to make the
// Eclipse JDI wake up. Without it, an ObjectCollectedException
// is thrown on excReq.enable(). No idea why this works,
// but at least exception handling has returned. (Suspect that it may
// block until all or at least some threads are available, meaning
// that the app has launched and we have legit objects to talk to).
vm.allThreads();
// The bug may not have been noticed because the test suite waits for
// a thread to be available, and queries it by calling allThreads().
// See org.eclipse.debug.jdi.tests.AbstractJDITest for the example.
EventRequestManager mgr = vm.eventRequestManager();
// get only the uncaught exceptions
ExceptionRequest excReq = mgr.createExceptionRequest(null, false, true);
// System.out.println(excReq);
// this version reports all exceptions, caught or uncaught
// ExceptionRequest excReq = mgr.createExceptionRequest(null, true, true);
// suspend so we can step
excReq.setSuspendPolicy(EventRequest.SUSPEND_ALL);
// excReq.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);
// excReq.setSuspendPolicy(EventRequest.SUSPEND_NONE); // another option?
excReq.enable();
Thread eventThread =
new Thread() {
public void run() {
try {
boolean connected = true;
while (connected) {
EventQueue eventQueue = vm.eventQueue();
// remove() blocks until event(s) available
EventSet eventSet = eventQueue.remove();
// listener.vmEvent(eventSet);
for (Event event : eventSet) {
// System.out.println("EventThread.handleEvent -> " + event);
if (event instanceof VMStartEvent) {
vm.resume();
} else if (event instanceof ExceptionEvent) {
// for (ThreadReference thread : vm.allThreads()) {
// System.out.println("thread : " + thread);
//// thread.suspend();
// }
exceptionEvent((ExceptionEvent) event);
} else if (event instanceof VMDisconnectEvent) {
connected = false;
}
}
}
// } catch (VMDisconnectedException e) {
// Logger.getLogger(VMEventReader.class.getName()).log(Level.INFO,
// "VMEventReader quit on VM disconnect");
} catch (Exception e) {
System.err.println("crashed in event thread due to " + e.getMessage());
// Logger.getLogger(VMEventReader.class.getName()).log(Level.SEVERE,
// "VMEventReader quit", e);
e.printStackTrace();
}
}
};
eventThread.start();
errThread = new MessageSiphon(process.getErrorStream(), this).getThread();
outThread = new StreamRedirectThread("JVM stdout Reader", process.getInputStream(), System.out);
errThread.start();
outThread.start();
// Shutdown begins when event thread terminates
try {
if (eventThread != null) eventThread.join(); // is this the problem?
// System.out.println("in here");
// Bug #852 tracked to this next line in the code.
// http://dev.processing.org/bugs/show_bug.cgi?id=852
errThread.join(); // Make sure output is forwarded
// System.out.println("and then");
outThread.join(); // before we exit
// System.out.println("finished join for errThread and outThread");
// At this point, disable the run button.
// This happens when the sketch is exited by hitting ESC,
// or the user manually closes the sketch window.
// TODO this should be handled better, should it not?
if (editor != null) {
editor.deactivateRun();
}
} catch (InterruptedException exc) {
// we don't interrupt
}
// System.out.println("and leaving");
if (writer != null) writer.close();
}
/**
* Starts the debugger. The method stops the current debugging (if any) and takes information from
* the provided info (containing the class to start and arguments to pass it and name of class to
* stop debugging in) and starts new debugging session.
*
* @param info debugger info about class to start
* @exception DebuggerException if an error occures during the start of the debugger
*/
public void startDebugger(DebuggerInfo info) throws DebuggerException {
debuggerInfo = info;
if (virtualMachine != null) finishDebugger();
stopOnMain = info.getStopClassName() != null;
mainClassName =
info
.getClassName(); // S ystem.out.println ("JPDADebugger stop on " + info.getStopClassName
// ()); // NOI18N
// open output window ...
super.startDebugger(info);
// stop on main
if (stopOnMain) {
try {
String stopClassName = debuggerInfo.getStopClassName();
AbstractDebugger d = (AbstractDebugger) TopManager.getDefault().getDebugger();
breakpointMain = new CoreBreakpoint[stopMethodNames.length];
for (int x = 0; x < breakpointMain.length; x++) {
breakpointMain[x] = (CoreBreakpoint) d.createBreakpoint(true);
breakpointMain[x].setClassName(""); // NOI18N
breakpointMain[x].setMethodName(stopMethodNames[x]); // NOI18N
CoreBreakpoint.Action[] a = breakpointMain[x].getActions();
int i, ii = a.length;
for (i = 0; i < ii; i++)
if (a[i] instanceof PrintAction) {
((PrintAction) a[i]).setPrintText(bundle.getString("CTL_Stop_On_Main_print_text"));
}
breakpointMain[x].setClassName(stopClassName);
}
addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent ev) {
if (ev.getPropertyName().equals(PROP_STATE)) {
if ((((Integer) ev.getNewValue()).intValue() == DEBUGGER_STOPPED)
|| (((Integer) ev.getNewValue()).intValue() == DEBUGGER_NOT_RUNNING)) {
if (breakpointMain != null) {
for (int x = 0; x < breakpointMain.length; x++) breakpointMain[x].remove();
breakpointMain = null;
}
removePropertyChangeListener(this);
}
}
}
});
} catch (DebuggerException e) {
e.printStackTrace();
}
}
// start & init remote debugger ............................................
boolean launch = false;
if (info instanceof ReconnectDebuggerInfo) {
virtualMachine = reconnect((ReconnectDebuggerInfo) info);
} else if (info instanceof RemoteDebuggerInfo) {
virtualMachine = connect((RemoteDebuggerInfo) info);
} else {
virtualMachine = launch(info);
process = virtualMachine.process();
showOutput(process, STD_OUT, STD_OUT);
connectInput(process);
launch = true;
}
requestManager = virtualMachine.eventRequestManager();
operator =
new Operator(
virtualMachine,
launch
? new Runnable() {
public void run() {
startDebugger();
}
}
: null,
new Runnable() {
public void run() {
try {
finishDebugger();
} catch (DebuggerException e) {
}
}
});
operator.start();
if (!launch) startDebugger();
}
