1 /*
2 * Copyright 2013 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 io.netty.buffer;
17
18 import io.netty.util.ReferenceCounted;
19
20 /**
21 * A packet which is send or receive.
22 */
23 public interface ByteBufHolder extends ReferenceCounted {
24
25 /**
26 * Return the data which is held by this {@link ByteBufHolder}.
27 */
28 ByteBuf content();
29
30 /**
31 * Create a deep copy of this {@link ByteBufHolder}.
32 */
33 ByteBufHolder copy();
34
35 /**
36 * Duplicate the {@link ByteBufHolder}. Be aware that this will not automatically call {@link #retain()}.
37 */
38 ByteBufHolder duplicate();
39
40 @Override
41 ByteBufHolder retain();
42
43 @Override
44 ByteBufHolder retain(int increment);
45 }