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The Archive Commons Code Libraries project contains general Java utility
libraries, as used by the Heritrix crawler and other projects.
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/*
* This file is part of the Heritrix web crawler (crawler.archive.org).
*
* Licensed to the Internet Archive (IA) by one or more individual
* contributors.
*
* The IA 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.archive.util.fingerprint;
/**
* Simple long fingerprint cache using a backing array; any long maps to
* one of 'smear' slots. Longs inserted should be randomly distributed,
*
* @author gojomo
*/
public class ArrayLongFPCache implements LongFPSet {
public static final int DEFAULT_CAPACITY = 1 << 20; // 1 million, 8MB
public static final int DEFAULT_SMEAR = 5;
protected long cache[] = new long[DEFAULT_CAPACITY];
protected int smear = DEFAULT_SMEAR;
protected int count = 0;
public void setCapacity(int newCapacity) {
long[] oldCache = cache;
cache = new long[newCapacity];
for(int i=0;i
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