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ParallelRecordScanner.java
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ParallelRecordScanner.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.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.consistency.checking.full;
import org.neo4j.consistency.checking.cache.CacheAccess;
import org.neo4j.consistency.checking.full.QueueDistribution.QueueDistributor;
import org.neo4j.consistency.statistics.Statistics;
import org.neo4j.helpers.progress.ProgressMonitorFactory.MultiPartBuilder;
import org.neo4j.kernel.api.direct.BoundedIterable;
import static org.neo4j.consistency.checking.cache.DefaultCacheAccess.DEFAULT_QUEUE_SIZE;
import static org.neo4j.consistency.checking.full.RecordDistributor.distributeRecords;
public class ParallelRecordScanner<RECORD> extends RecordScanner<RECORD>
{
private final CacheAccess cacheAccess;
private final QueueDistribution distribution;
public ParallelRecordScanner( String name, Statistics statistics, int threads, BoundedIterable<RECORD> store,
MultiPartBuilder builder, RecordProcessor<RECORD> processor, CacheAccess cacheAccess,
QueueDistribution distribution,
IterableStore... warmUpStores )
{
super( name, statistics, threads, store, builder, processor, warmUpStores );
this.cacheAccess = cacheAccess;
this.distribution = distribution;
}
@Override
protected void scan()
{
long recordsPerCPU = RecordDistributor.calculateRecodsPerCpu( store.maxCount(), numberOfThreads );
cacheAccess.prepareForProcessingOfSingleStore( recordsPerCPU );
QueueDistributor<RECORD> distributor = distribution.distributor( recordsPerCPU, numberOfThreads );
distributeRecords( numberOfThreads, getClass().getSimpleName() + "-" + name,
DEFAULT_QUEUE_SIZE, store, progress, processor, distributor );
}
}