1
package org.apache.lucene.util;
4
* Licensed to the Apache Software Foundation (ASF) under one or more
5
* contributor license agreements. See the NOTICE file distributed with
6
* this work for additional information regarding copyright ownership.
7
* The ASF licenses this file to You under the Apache License, Version 2.0
8
* (the "License"); you may not use this file except in compliance with
9
* the License. You may obtain a copy of the License at
11
* http://www.apache.org/licenses/LICENSE-2.0
13
* Unless required by applicable law or agreed to in writing, software
14
* distributed under the License is distributed on an "AS IS" BASIS,
15
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16
* See the License for the specific language governing permissions and
17
* limitations under the License.
20
import java.util.IdentityHashMap;
24
* An average, best guess, MemoryModel that should work okay on most systems.
27
public class AverageGuessMemoryModel extends MemoryModel {
28
// best guess primitive sizes
29
private final Map<Class<?>,Integer> sizes = new IdentityHashMap<Class<?>,Integer>() {
31
put(boolean.class, Integer.valueOf(1));
32
put(byte.class, Integer.valueOf(1));
33
put(char.class, Integer.valueOf(2));
34
put(short.class, Integer.valueOf(2));
35
put(int.class, Integer.valueOf(4));
36
put(float.class, Integer.valueOf(4));
37
put(double.class, Integer.valueOf(8));
38
put(long.class, Integer.valueOf(8));
45
* @see org.apache.lucene.util.MemoryModel#getArraySize()
48
public int getArraySize() {
55
* @see org.apache.lucene.util.MemoryModel#getClassSize()
58
public int getClassSize() {
63
* @see org.apache.lucene.util.MemoryModel#getPrimitiveSize(java.lang.Class)
66
public int getPrimitiveSize(Class<?> clazz) {
67
return sizes.get(clazz).intValue();
71
* @see org.apache.lucene.util.MemoryModel#getReferenceSize()
74
public int getReferenceSize() {