/**
* It is ok to have another thread rerun this method after a halt().
*
* @throws IllegalStateException if this object instance is already running in a thread
*/
@Override
public void run() {
if (!running.compareAndSet(false, true)) {
throw new IllegalStateException("Thread is already running");
}
sequenceBarrier.clearAlert();
notifyStart();
T event = null;
long nextSequence = sequence.get() + 1L;
while (true) {
try {
final long availableSequence = sequenceBarrier.waitFor(nextSequence);
while (nextSequence <= availableSequence) {
event = dataProvider.get(nextSequence);
eventHandler.onEvent(event, nextSequence, nextSequence == availableSequence);
nextSequence++;
}
sequence.set(availableSequence);
} catch (final TimeoutException e) {
notifyTimeout(sequence.get());
} catch (final AlertException ex) {
if (!running.get()) {
break;
}
} catch (final Throwable ex) {
exceptionHandler.handleEventException(ex, nextSequence, event);
sequence.set(nextSequence);
nextSequence++;
}
}
notifyShutdown();
running.set(false);
}
