1 /*
2 * Copyright 2025 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 * https://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.channel.epoll;
17
18 import io.netty.channel.unix.IovArray;
19
20 final class NativeArrays {
21
22 // These are initialized on first use
23 private IovArray iovArray;
24 private NativeDatagramPacketArray datagramPacketArray;
25
26 /**
27 * Return a cleared {@link IovArray} that can be used for writes.
28 */
29 IovArray cleanIovArray() {
30 if (iovArray == null) {
31 iovArray = new IovArray();
32 } else {
33 iovArray.clear();
34 }
35 return iovArray;
36 }
37
38 /**
39 * Return a cleared {@link NativeDatagramPacketArray} that can be used for writes.
40 */
41 NativeDatagramPacketArray cleanDatagramPacketArray() {
42 if (datagramPacketArray == null) {
43 datagramPacketArray = new NativeDatagramPacketArray();
44 } else {
45 datagramPacketArray.clear();
46 }
47 return datagramPacketArray;
48 }
49
50 void free() {
51 // release native memory
52 if (iovArray != null) {
53 iovArray.release();
54 iovArray = null;
55 }
56 if (datagramPacketArray != null) {
57 datagramPacketArray.release();
58 datagramPacketArray = null;
59 }
60 }
61 }