1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.util;
17
18
19 /**
20 * Estimates the size of an object in bytes.
21 *
22 * @apiviz.landmark
23 * @apiviz.uses org.jboss.netty.util.EstimatableObjectWrapper
24 */
25 public interface ObjectSizeEstimator {
26
27 /**
28 * Returns the estimated size of the specified object in bytes.
29 *
30 * @return a positive integer which represents the size of the specified
31 * object in bytes
32 */
33 int estimateSize(Object o);
34 }