2 * Copyright 2015-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.storage.buffer;
18 import io.atomix.utils.concurrent.ReferencePool;
21 * Pooled buffer allocator.
23 * @author <a href="http://github.com/kuujo">Jordan Halterman</a>
25 public abstract class PooledAllocator implements BufferAllocator {
26 private final ReferencePool<AbstractBuffer> pool;
28 protected PooledAllocator(ReferencePool<AbstractBuffer> pool) {
33 * Returns the maximum buffer capacity.
35 * @return The maximum buffer capacity.
37 protected abstract int maxCapacity();
40 public Buffer allocate() {
41 return allocate(4096, maxCapacity());
45 public Buffer allocate(int capacity) {
46 return allocate(capacity, maxCapacity());
50 public Buffer allocate(int initialCapacity, int maxCapacity) {
51 return pool.acquire().reset(0, initialCapacity, maxCapacity).clear();