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PooledJobHandle.java
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PooledJobHandle.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.impl.scheduler;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import org.neo4j.scheduler.CancelListener;
import org.neo4j.scheduler.JobHandle;
final class PooledJobHandle implements JobHandle
{
private final Future<?> future;
private final Object registryKey;
private final ConcurrentHashMap<Object,Future<?>> registry;
private final List<CancelListener> cancelListeners = new CopyOnWriteArrayList<>();
PooledJobHandle( Future<?> future, Object registryKey, ConcurrentHashMap<Object,Future<?>> registry )
{
this.future = future;
this.registryKey = registryKey;
this.registry = registry;
}
@Override
public void cancel( boolean mayInterruptIfRunning )
{
future.cancel( mayInterruptIfRunning );
for ( CancelListener cancelListener : cancelListeners )
{
cancelListener.cancelled( mayInterruptIfRunning );
}
registry.remove( registryKey );
}
@Override
public void waitTermination() throws InterruptedException, ExecutionException
{
future.get();
}
@Override
public void registerCancelListener( CancelListener listener )
{
cancelListeners.add( listener );
}
}