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.uring;
17
18 import io.netty.buffer.ByteBuf;
19 import io.netty.buffer.ByteBufAllocator;
20 import io.netty.util.internal.ObjectUtil;
21
22 import java.util.Objects;
23
24 /**
25 * {@link IoUringBufferRingAllocator} implementation which uses a fixed size for the buffers that are returned by
26 * {@link #allocate()}.
27 */
28 public final class IoUringFixedBufferRingAllocator implements IoUringBufferRingAllocator {
29 private final ByteBufAllocator allocator;
30 private final int bufferSize;
31
32 /**
33 * Create a new instance
34 *
35 * @param allocator the {@link ByteBufAllocator} to use.
36 * @param bufferSize the size of the buffers that are allocated.
37 */
38 public IoUringFixedBufferRingAllocator(ByteBufAllocator allocator, int bufferSize) {
39 this.allocator = Objects.requireNonNull(allocator, "allocator");
40 this.bufferSize = ObjectUtil.checkPositive(bufferSize, "bufferSize");
41 }
42
43 /**
44 * Create a new instance
45 *
46 * @param bufferSize the size of the buffers that are allocated.
47 */
48 public IoUringFixedBufferRingAllocator(int bufferSize) {
49 this(ByteBufAllocator.DEFAULT, bufferSize);
50 }
51
52 @Override
53 public ByteBuf allocate() {
54 return allocator.directBuffer(bufferSize);
55 }
56
57 @Override
58 public void lastBytesRead(int attempted, int actual) {
59 // NOOP.
60 }
61 }