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.ByteBufAllocator;
19 import io.netty.util.internal.ObjectUtil;
20
21
22 /**
23 * {@link IoUringBufferRingAllocator} implementation which uses a fixed size for the buffers that are returned by
24 * {@link #allocate()}.
25 */
26 public final class IoUringFixedBufferRingAllocator extends AbstractIoUringBufferRingAllocator {
27 private final int bufferSize;
28
29 /**
30 * Create a new instance
31 *
32 * @param allocator the {@link ByteBufAllocator} to use.
33 * @param largeAllocation {@code true} if we should do a large allocation for the whole buffer ring
34 * and then slice out the buffers or {@code false} if we should do one allocation
35 * per buffer.
36 * @param bufferSize the size of the buffers that are allocated.
37 */
38 public IoUringFixedBufferRingAllocator(ByteBufAllocator allocator, boolean largeAllocation, int bufferSize) {
39 super(allocator, largeAllocation);
40 this.bufferSize = ObjectUtil.checkPositive(bufferSize, "bufferSize");
41 }
42
43 /**
44 * Create a new instance
45 *
46 * @param allocator the {@link ByteBufAllocator} to use.
47 * @param bufferSize the size of the buffers that are allocated.
48 */
49 public IoUringFixedBufferRingAllocator(ByteBufAllocator allocator, int bufferSize) {
50 this(allocator, false, bufferSize);
51 }
52
53 /**
54 * Create a new instance
55 *
56 * @param bufferSize the size of the buffers that are allocated.
57 */
58 public IoUringFixedBufferRingAllocator(int bufferSize) {
59 this(ByteBufAllocator.DEFAULT, bufferSize);
60 }
61
62 @Override
63 protected int nextBufferSize() {
64 return bufferSize;
65 }
66 }