package org.apache.lucene.util;
/**
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
/**
* Returns primitive memory sizes for estimating RAM usage.
*
*/
public abstract class MemoryModel {
/**
* @return size of array beyond contents
*/
public abstract int getArraySize();
/**
* @return Class size overhead
*/
public abstract int getClassSize();
/**
* @param clazz a primitive Class - bool, byte, char, short, long, float,
* short, double, int
* @return the size in bytes of given primitive Class
*/
public abstract int getPrimitiveSize(Class clazz);
/**
* @return size of reference
*/
public abstract int getReferenceSize();
}