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/*
* Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.signal;
import org.eclipse.net4j.util.collection.HashBag;
import org.eclipse.net4j.util.event.IEvent;
import org.eclipse.net4j.util.event.IListener;
/**
* Provides {@link Signal signal} execution counts when
* {@link SignalProtocol#addListener(IListener) attached} to a {@link ISignalProtocol signal protocol}.
*
* @author Eike Stepper
* @since 3.0
*/
public final class SignalCounter implements IListener
{
private HashBag<Class<? extends Signal>> signals = new HashBag<Class<? extends Signal>>();
public SignalCounter()
{
}
/**
* @since 4.1
*/
public SignalCounter(ISignalProtocol<?> protocol)
{
protocol.addListener(this);
}
public int getCountFor(Class<? extends Signal> signal)
{
synchronized (signals)
{
return signals.getCounterFor(signal);
}
}
public void clearCounts()
{
synchronized (signals)
{
signals.clear();
}
}
public void notifyEvent(IEvent event)
{
if (event instanceof SignalFinishedEvent)
{
synchronized (signals)
{
SignalFinishedEvent<?> e = (SignalFinishedEvent<?>)event;
signals.add(e.getSignal().getClass());
}
}
}
}
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