StepRequestImpl(ThreadReference thread, int size, int depth) {
this.thread = (ThreadReferenceImpl) thread;
this.size = size;
this.depth = depth;
/*
* Make sure this isn't a duplicate
*/
List requests = stepRequests();
Iterator iter = requests.iterator();
while (iter.hasNext()) {
StepRequest request = (StepRequest) iter.next();
if ((request != this) && request.isEnabled() && request.thread().equals(thread)) {
throw new DuplicateRequestException("Only one step request allowed per thread");
}
}
}
/**
* 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();
}
}
/** 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;
}