2 * Copyright 2014-present Open Networking Foundation
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package io.atomix.utils.serializer;
18 import java.lang.ref.SoftReference;
19 import java.util.concurrent.ConcurrentLinkedQueue;
20 import java.util.function.Function;
22 abstract class KryoIOPool<T> {
24 private final ConcurrentLinkedQueue<SoftReference<T>> queue = new ConcurrentLinkedQueue<>();
26 private T borrow(final int bufferSize) {
28 SoftReference<T> reference;
29 while ((reference = queue.poll()) != null) {
30 if ((element = reference.get()) != null) {
34 return create(bufferSize);
37 protected abstract T create(final int bufferSize);
39 protected abstract boolean recycle(final T element);
41 <R> R run(final Function<T, R> function, final int bufferSize) {
42 final T element = borrow(bufferSize);
44 return function.apply(element);
46 if (recycle(element)) {
47 queue.offer(new SoftReference<>(element));