package org.apache.cassandra.cache;
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 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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public interface IMeasurableMemory
{
    
Returns:
the amount of on-heap memory retained by the object that might be reclaimed if the object were reclaimed,
i.e. it should try to exclude globally cached data where possible, or counting portions of arrays that are
referenced by the object but used by other objects only (e.g. slabbed byte-buffers), etc./**
     * @return the amount of on-heap memory retained by the object that might be reclaimed if the object were reclaimed,
     * i.e. it should try to exclude globally cached data where possible, or counting portions of arrays that are
     * referenced by the object but used by other objects only (e.g. slabbed byte-buffers), etc.
     */
    public long unsharedHeapSize();
}