public DelayedSignal getNextDelayedSignal() {
synchronized (delayedSignalQueue) {
while (true) {
try {
if (delayedSignalQueue.size() > 0) {
DelayedSignal sig;
long delay;
sig = (DelayedSignal) delayedSignalQueue.get(0);
delay = sig.getDeliveryTime() - context.getTimeObject().getTimeMs();
if (delay <= 0) {
delayedSignalQueue.remove(sig);
return sig;
}
System.out.println("Next delayed signal in " + delay);
context.getTimeObject().wait(delayedSignalQueue, delay);
} else {
if (!isActive()) return null;
delayedSignalQueue.wait();
}
} catch (InterruptedException e) {
/*
* InterruptedException is OK.
*/
}
}
}
}
/**
* propogate the next signal from self to all instances. Callers must be synchronized on 'this'
* object.
*/
public synchronized boolean propogateNextSignalSelf(Debug debugObject)
throws LemRuntimeException {
/*
* First propogate any elapsed delayed signals to self
* into the signalSelfQueue.
*/
while (delayedSignalSelfQueue.size() > 0) {
DelayedSignal s;
s = (DelayedSignal) delayedSignalSelfQueue.get(0);
if (s.getDeliveryTime() <= context.getTimeObject().getTimeMs()) {
delayedSignalSelfQueue.remove(s);
addSignalSelf(s);
} else break;
}
if (signalSelfQueue.size() > 0) {
Signal s = (Signal) signalSelfQueue.remove(0);
for (Iterator i = instances.iterator(); i.hasNext(); ) {
Instance in = (Instance) i.next();
if (in.isActive) {
in.addSignalSelf(s);
debugObject.addEntity();
}
}
debugObject.delEntity();
return true;
}
return false;
}
public synchronized long getNextDelayedSignalSelfDelay() {
if (delayedSignalSelfQueue.size() > 0) {
DelayedSignal sig;
long delay;
sig = (DelayedSignal) delayedSignalSelfQueue.get(0);
delay = sig.getDeliveryTime() - context.getTimeObject().getTimeMs();
if (delay > 0) return delay;
return 0;
} else return -1;
}
public void run() {
while (true) {
DelayedSignal s = senderObject.getNextDelayedSignal();
if (s == null) return;
org.jdns.xtuml.runtime.Object target = s.getTarget();
System.out.println(target.getObjectId() + " delivered delayed signal");
synchronized (target) {
Integer signalId = s.getSignalId();
Integer targetObjectId = target.getObjectId();
if (target.isActive()) {
target.addSignal(s);
} else {
/*
* All interpreters have stopped,
* signal shouldn't be deliviered.
*/
context.getDebugObject().delEntity();
}
}
}
}
