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Mongoose is a high-load storage performance testing tool

There is a newer version: 4.3.10

package com.emc.mongoose.base.data;

import java.io.IOException;
import java.nio.MappedByteBuffer;

/** Created by andrey on 24.07.17. */
public abstract class DataInputBase implements DataInput {

	protected MappedByteBuffer inputBuff;

	protected DataInputBase() {
		inputBuff = null;
	}

	protected DataInputBase(final MappedByteBuffer inputBuff) {
		this.inputBuff = inputBuff;
		inputBuff.clear();
	}

	protected DataInputBase(final DataInputBase other) {
		this.inputBuff = other.inputBuff;
	}

	@Override
	public final int getSize() {
		// NPE protection is necessary for the storage driver service
		return inputBuff == null ? 0 : inputBuff.capacity();
	}

	@Override
	public abstract MappedByteBuffer getLayer(final int layerIndex);

	@Override
	public void close() throws IOException {
		inputBuff = null;
	}
}