85 lines
2.6 KiB
Java
85 lines
2.6 KiB
Java
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership.
|
|
* The ASF licenses this file to You under the Apache License, Version 2.0
|
|
* (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
package org.apache.catalina.tribes.io;
|
|
|
|
|
|
import org.apache.catalina.tribes.util.StringManager;
|
|
import org.apache.juli.logging.Log;
|
|
import org.apache.juli.logging.LogFactory;
|
|
|
|
/**
|
|
*
|
|
*
|
|
* @version 1.0
|
|
*/
|
|
public class BufferPool {
|
|
private static final Log log = LogFactory.getLog(BufferPool.class);
|
|
|
|
public static final int DEFAULT_POOL_SIZE = 100*1024*1024; //100MB
|
|
|
|
protected static final StringManager sm = StringManager.getManager(BufferPool.class);
|
|
|
|
|
|
|
|
protected static volatile BufferPool instance = null;
|
|
protected final BufferPoolAPI pool;
|
|
|
|
private BufferPool(BufferPoolAPI pool) {
|
|
this.pool = pool;
|
|
}
|
|
|
|
public XByteBuffer getBuffer(int minSize, boolean discard) {
|
|
if ( pool != null ) return pool.getBuffer(minSize, discard);
|
|
else return new XByteBuffer(minSize,discard);
|
|
}
|
|
|
|
public void returnBuffer(XByteBuffer buffer) {
|
|
if ( pool != null ) pool.returnBuffer(buffer);
|
|
}
|
|
|
|
public void clear() {
|
|
if ( pool != null ) pool.clear();
|
|
}
|
|
|
|
|
|
public static BufferPool getBufferPool() {
|
|
if (instance == null) {
|
|
synchronized (BufferPool.class) {
|
|
if (instance == null) {
|
|
BufferPoolAPI pool = new BufferPool15Impl();
|
|
pool.setMaxSize(DEFAULT_POOL_SIZE);
|
|
log.info(sm.getString("bufferPool.created",
|
|
Integer.toString(DEFAULT_POOL_SIZE), pool.getClass().getName()));
|
|
instance = new BufferPool(pool);
|
|
}
|
|
}
|
|
}
|
|
return instance;
|
|
}
|
|
|
|
|
|
public static interface BufferPoolAPI {
|
|
public void setMaxSize(int bytes);
|
|
|
|
public XByteBuffer getBuffer(int minSize, boolean discard);
|
|
|
|
public void returnBuffer(XByteBuffer buffer);
|
|
|
|
public void clear();
|
|
}
|
|
}
|