68 lines
2.1 KiB
Java
68 lines
2.1 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.tribes.io;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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*
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* @version 1.0
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*/
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class BufferPool15Impl implements BufferPool.BufferPoolAPI {
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protected int maxSize;
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protected final AtomicInteger size = new AtomicInteger(0);
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protected final ConcurrentLinkedQueue<XByteBuffer> queue =
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new ConcurrentLinkedQueue<>();
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@Override
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public void setMaxSize(int bytes) {
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this.maxSize = bytes;
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}
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@Override
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public XByteBuffer getBuffer(int minSize, boolean discard) {
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XByteBuffer buffer = queue.poll();
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if ( buffer != null ) size.addAndGet(-buffer.getCapacity());
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if ( buffer == null ) buffer = new XByteBuffer(minSize,discard);
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else if ( buffer.getCapacity() <= minSize ) buffer.expand(minSize);
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buffer.setDiscard(discard);
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buffer.reset();
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return buffer;
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}
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@Override
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public void returnBuffer(XByteBuffer buffer) {
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if ( (size.get() + buffer.getCapacity()) <= maxSize ) {
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size.addAndGet(buffer.getCapacity());
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queue.offer(buffer);
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}
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}
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@Override
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public void clear() {
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queue.clear();
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size.set(0);
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}
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public int getMaxSize() {
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return maxSize;
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}
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}
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