/*
* 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 com.github.zangxiaoqiang.io.nio;
import java.util.concurrent.atomic.AtomicInteger;
/**
* A fixed size pool of {@link SelectorLoop}.
*
* @author <a href="http://mina.apache.org">Apache MINA Project</a>
*/
public class FixedSelectorLoopPool implements SelectorLoopPool {
/** the pool of selector loop */
private final SelectorLoop[] pool;
/** the index of the next selector loop to be served */
private final AtomicInteger nextIndex = new AtomicInteger();
/**
* Create a pool of "size" {@link SelectorLoop}
*
* @param size
*/
public FixedSelectorLoopPool(String prefix, final int size) {
if (size <= 0) {
throw new IllegalArgumentException("We can't create a pool with no Selectorloop in it");
}
pool = new SelectorLoop[size];
for (int i = 0; i < size; i++) {
pool[i] = new NioSelectorLoop(prefix + "-I/O", i);
}
}
/**
* {@inheritDoc}
*/
public SelectorLoop getSelectorLoop() {
return pool[Math.abs(nextIndex.incrementAndGet() % pool.length)];
}
}