/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch 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.fastcatsearch.common.io;
import java.lang.ref.SoftReference;
/**
*
*/
public class CachedStreamInput {
static class Entry {
char[] chars = new char[80];
}
private static final ThreadLocal<SoftReference<Entry>> cache = new ThreadLocal<SoftReference<Entry>>();
static Entry instance() {
SoftReference<Entry> ref = cache.get();
Entry entry = ref == null ? null : ref.get();
if (entry == null) {
entry = new Entry();
cache.set(new SoftReference<Entry>(entry));
}
return entry;
}
public static void clear() {
cache.remove();
}
public static char[] getCharArray(int size) {
Entry entry = instance();
if (entry.chars.length < size) {
entry.chars = new char[size];
}
return entry.chars;
}
}