void destroy(VirtualMachine vm) throws Exception {
EventRequestManager requestManager = vm.eventRequestManager();
for (EventRequest request : handlers.keySet()) {
requestManager.deleteEventRequest(request);
}
debugger.destroyHandler();
}
/** The 'refType' is known to match, return the EventRequest. */
EventRequest resolveEventRequest(ReferenceType refType) throws NoSuchFieldException {
Field field = refType.fieldByName(fieldId);
EventRequestManager em = refType.virtualMachine().eventRequestManager();
EventRequest wp = em.createAccessWatchpointRequest(field);
wp.setSuspendPolicy(suspendPolicy);
wp.enable();
return wp;
}
@Override
public void addBreakpoint(Breakpoint breakpoint) throws DebuggerException {
final String className = breakpoint.getLocation().getTarget();
final int lineNumber = breakpoint.getLocation().getLineNumber();
List<ReferenceType> classes = vm.classesByName(className);
// it may mean that class doesn't loaded by a target JVM yet
if (classes.isEmpty()) {
deferBreakpoint(breakpoint);
throw new DebuggerException("Class not loaded");
}
ReferenceType clazz = classes.get(0);
List<com.sun.jdi.Location> locations;
try {
locations = clazz.locationsOfLine(lineNumber);
} catch (AbsentInformationException | ClassNotPreparedException e) {
throw new DebuggerException(e.getMessage(), e);
}
if (locations.isEmpty()) {
throw new DebuggerException("Line " + lineNumber + " not found in class " + className);
}
com.sun.jdi.Location location = locations.get(0);
if (location.method() == null) {
// Line is out of method.
throw new DebuggerException("Invalid line " + lineNumber + " in class " + className);
}
// Ignore new breakpoint if already have breakpoint at the same location.
EventRequestManager requestManager = getEventManager();
for (BreakpointRequest breakpointRequest : requestManager.breakpointRequests()) {
if (location.equals(breakpointRequest.location())) {
LOG.debug("Breakpoint at {} already set", location);
return;
}
}
try {
EventRequest breakPointRequest = requestManager.createBreakpointRequest(location);
breakPointRequest.setSuspendPolicy(EventRequest.SUSPEND_ALL);
String expression = breakpoint.getCondition();
if (!(expression == null || expression.isEmpty())) {
ExpressionParser parser = ExpressionParser.newInstance(expression);
breakPointRequest.putProperty(
"org.eclipse.che.ide.java.debug.condition.expression.parser", parser);
}
breakPointRequest.setEnabled(true);
} catch (NativeMethodException | IllegalThreadStateException | InvalidRequestStateException e) {
throw new DebuggerException(e.getMessage(), e);
}
debuggerCallback.onEvent(new BreakpointActivatedEventImpl(breakpoint));
LOG.debug("Add breakpoint: {}", location);
}
private EventRequest createMethodRequest(JDXDebugTarget target, Object classFilter, boolean entry)
throws CoreException {
EventRequest request = null;
EventRequestManager manager = target.getEventRequestManager();
if (manager == null) {
target.requestFailed(
JDXMessages.JDXMethodBreakpoint_Unable_to_create_breakpoint_request___VM_disconnected__1,
null); //$NON-NLS-1$
}
try {
if (entry) {
if (classFilter instanceof ClassType
&& getMethodName() != null
&& getMethodSignature() != null) {
ClassType clazz = (ClassType) classFilter;
if (clazz.name().equals(getTypeName())) {
Method method = clazz.concreteMethodByName(getMethodName(), getMethodSignature());
if (method != null && !method.isNative()) {
Location location = method.location();
if (location != null && location.codeIndex() != -1) {
request = manager.createBreakpointRequest(location);
}
}
}
}
if (request == null) {
request = manager.createMethodEntryRequest();
if (classFilter instanceof String) {
((MethodEntryRequest) request).addClassFilter((String) classFilter);
} else if (classFilter instanceof ReferenceType) {
((MethodEntryRequest) request).addClassFilter((ReferenceType) classFilter);
}
}
} else {
request = manager.createMethodExitRequest();
if (classFilter instanceof String) {
((MethodExitRequest) request).addClassFilter((String) classFilter);
} else if (classFilter instanceof ReferenceType) {
((MethodExitRequest) request).addClassFilter((ReferenceType) classFilter);
}
}
configureRequest(request, target);
} catch (VMDisconnectedException e) {
if (!target.isAvailable()) {
return null;
}
Plugin.log(e);
} catch (RuntimeException e) {
target.internalError(e);
}
return request;
}
/** Removes last step request. */
void removeStepRequest() {
if (stepRequest != null) {
requestManager.deleteEventRequest(stepRequest);
stepRequest = null;
}
if (findSourceMER != null) {
requestManager.deleteEventRequest(findSourceMER);
findSourceMER = null;
}
if (findSourceSR != null) {
requestManager.deleteEventRequest(findSourceSR);
findSourceSR = null;
}
}
@Override
public void deleteBreakpoint(Location location) throws DebuggerException {
final String className = location.getTarget();
final int lineNumber = location.getLineNumber();
EventRequestManager requestManager = getEventManager();
List<BreakpointRequest> snapshot = new ArrayList<>(requestManager.breakpointRequests());
for (BreakpointRequest breakpointRequest : snapshot) {
com.sun.jdi.Location jdiLocation = breakpointRequest.location();
if (jdiLocation.declaringType().name().equals(className)
&& jdiLocation.lineNumber() == lineNumber) {
requestManager.deleteEventRequest(breakpointRequest);
LOG.debug("Delete breakpoint: {}", location);
}
}
}
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();
}
@Override
protected void deleteRequests() {
// Delete the old requests, if any.
try {
if (startRequest != null) {
VirtualMachine vm = startRequest.virtualMachine();
EventRequestManager erm = vm.eventRequestManager();
erm.deleteEventRequest(startRequest);
}
if (deathRequest != null) {
VirtualMachine vm = deathRequest.virtualMachine();
EventRequestManager erm = vm.eventRequestManager();
erm.deleteEventRequest(deathRequest);
}
} catch (VMDisconnectedException vmde) {
// This happens all the time.
} finally {
startRequest = null;
deathRequest = null;
}
}
/** Create the method entry and exit event requests. */
protected void createRequests() {
BreakpointGroup group = getBreakpointGroup();
if (group == null) {
// Nothing we can do right now.
return;
}
Session session = BreakpointProvider.getSession(group);
if (session == null || !session.isConnected()) {
// Nothing we can do right now.
return;
}
EventRequestManager erm = session.getConnection().getVM().eventRequestManager();
// Create the new requests.
if (onStart) {
startRequest = erm.createThreadStartRequest();
register(startRequest);
}
if (onDeath) {
deathRequest = erm.createThreadDeathRequest();
register(deathRequest);
}
}
/**
* If this line can not be current => stepOver & return true. {support for non java languages}
*
* <p>return false on the other hand.
*/
boolean resolveCanBeCurrent(ThreadReference tr, Line l) {
if ((l != null) && (!canBeCurrent(l, false))) {
try {
removeStepRequest();
findSourceSR =
requestManager.createStepRequest(tr, StepRequest.STEP_LINE, StepRequest.STEP_OVER);
findSourceSR.addCountFilter(1);
findSourceSR.setSuspendPolicy(EventRequest.SUSPEND_ALL);
operator.register(findSourceSR, this);
findSourceSR.enable();
operator.resume();
} catch (DuplicateRequestException e) {
e.printStackTrace();
}
return true;
}
return false;
}
/** 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();
}
}
public void applyThreadFilter(
@NotNull final DebugProcessImpl debugProcess, @Nullable ThreadReference newFilterThread) {
final RequestManagerImpl requestManager = debugProcess.getRequestsManager();
final ThreadReference oldFilterThread = requestManager.getFilterThread();
if (Comparing.equal(newFilterThread, oldFilterThread)) {
// the filter already added
return;
}
requestManager.setFilterThread(newFilterThread);
if (newFilterThread == null || oldFilterThread != null) {
final List<Breakpoint> breakpoints = getBreakpoints();
for (Breakpoint breakpoint : breakpoints) {
if (LineBreakpoint.CATEGORY.equals(breakpoint.getCategory())
|| MethodBreakpoint.CATEGORY.equals(breakpoint.getCategory())) {
requestManager.deleteRequest(breakpoint);
breakpoint.createRequest(debugProcess);
}
}
} else {
// important! need to add filter to _existing_ requests, otherwise Requestor->Request mapping
// will be lost
// and debugger trees will not be restored to original state
abstract class FilterSetter<T extends EventRequest> {
void applyFilter(@NotNull final List<T> requests, final ThreadReference thread) {
for (T request : requests) {
try {
final boolean wasEnabled = request.isEnabled();
if (wasEnabled) {
request.disable();
}
addFilter(request, thread);
if (wasEnabled) {
request.enable();
}
} catch (InternalException e) {
LOG.info(e);
}
}
}
protected abstract void addFilter(final T request, final ThreadReference thread);
}
final EventRequestManager eventRequestManager = requestManager.getVMRequestManager();
new FilterSetter<BreakpointRequest>() {
@Override
protected void addFilter(
@NotNull final BreakpointRequest request, final ThreadReference thread) {
request.addThreadFilter(thread);
}
}.applyFilter(eventRequestManager.breakpointRequests(), newFilterThread);
new FilterSetter<MethodEntryRequest>() {
@Override
protected void addFilter(
@NotNull final MethodEntryRequest request, final ThreadReference thread) {
request.addThreadFilter(thread);
}
}.applyFilter(eventRequestManager.methodEntryRequests(), newFilterThread);
new FilterSetter<MethodExitRequest>() {
@Override
protected void addFilter(
@NotNull final MethodExitRequest request, final ThreadReference thread) {
request.addThreadFilter(thread);
}
}.applyFilter(eventRequestManager.methodExitRequests(), newFilterThread);
}
}
/**
* 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();
}
/** Finds the first executed line with source code. */
public void traceToSourceCode(ThreadReference thread) {
// S ystem.out.println ("Start finding!!! "); // NOI18N
// create Step Request for searching a source code
try {
findSourceSR =
requestManager.createStepRequest(thread, StepRequest.STEP_LINE, StepRequest.STEP_OUT);
findSourceSR.addCountFilter(1);
findSourceSR.setSuspendPolicy(EventRequest.SUSPEND_ALL);
operator.register(findSourceSR, this);
findSourceSR.enable();
} catch (DuplicateRequestException e) {
e.printStackTrace();
}
// create Method Entry Request for searching a source code
findSourceMER = requestManager.createMethodEntryRequest();
findSourceMER.setSuspendPolicy(EventRequest.SUSPEND_ALL);
findSourceMER.addThreadFilter(thread);
findSourceCounter = 0;
operator.register(
findSourceMER,
new Executor() {
public void exec(com.sun.jdi.event.Event event) {
if (findSourceCounter == 500) {
// finding source takes a long time
operator.resume();
if (findSourceMER != null) {
requestManager.deleteEventRequest(findSourceMER);
findSourceMER = null;
}
return;
}
findSourceCounter++;
Location loc = ((MethodEntryEvent) event).location();
if (loc == null) {
// no line => continue finding
operator.resume();
return;
}
String className = loc.declaringType().name();
int ln = loc.lineNumber();
// S ystem.out.println ("FIND " + className + " : " + ln); // NOI18N
try {
Line l = null;
if ((l = Utils.getLineForSource(className, loc.sourceName(), ln)) == null) {
// no line => continue finding
operator.resume();
return;
}
// WOW I have a nice line!
ThreadReference tr = ((MethodEntryEvent) event).thread();
if (resolveCanBeCurrent(tr, l))
// if can not be current => steps to some line
return;
// line can be current!
String threadName = tr.name();
String methodName = loc.method() != null ? loc.method().name() : ""; // NOI18N
String lineNumber = ln == -1 ? "?" : "" + ln; // NOI18N
makeCurrent(threadName, className, methodName, lineNumber, true, tr);
operator.stopRequest();
} catch (AbsentInformationException e) {
}
}
});
findSourceMER.enable();
operator.resume();
return;
}