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MuninnPageCacheFixture.java
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MuninnPageCacheFixture.java
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/*
* Copyright (c) 2002-2018 "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.io.pagecache.impl.muninn;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import org.neo4j.io.mem.MemoryAllocator;
import org.neo4j.io.pagecache.PageCacheTestSupport;
import org.neo4j.io.pagecache.PageSwapperFactory;
import org.neo4j.io.pagecache.tracing.PageCacheTracer;
import org.neo4j.io.pagecache.tracing.cursor.PageCursorTracerSupplier;
import org.neo4j.memory.LocalMemoryTracker;
public class MuninnPageCacheFixture extends PageCacheTestSupport.Fixture<MuninnPageCache>
{
CountDownLatch backgroundFlushLatch;
@Override
public MuninnPageCache createPageCache( PageSwapperFactory swapperFactory, int maxPages,
PageCacheTracer tracer, PageCursorTracerSupplier cursorTracerSupplier )
{
long memory = MuninnPageCache.memoryRequiredForPages( maxPages );
MemoryAllocator allocator = MemoryAllocator.createAllocator( String.valueOf( memory ),
new LocalMemoryTracker() );
return new MuninnPageCache( swapperFactory, allocator, tracer, cursorTracerSupplier );
}
@Override
public void tearDownPageCache( MuninnPageCache pageCache ) throws IOException
{
if ( backgroundFlushLatch != null )
{
backgroundFlushLatch.countDown();
backgroundFlushLatch = null;
}
pageCache.close();
}
}