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/**
* _____ _____ _____ _____ __ _____ _____ _____ _____
* | __| | | | | | | | | __| | |
* |__ | | | | | | | | | |__| | | | |- -| --|
* |_____|_____|_|_|_|_____| |_____|_____|_____|_____|_____|
*
* UNICORNS AT WARP SPEED SINCE 2010
*
* 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.sumologic.log4j.queue;
import java.util.Collection;
/**
* A concurrent buffer with a maximum capacity that, upon reaching said capacity, evicts some
* element in the queue to ensure the new element can fit.
*
* @author: Jose Muniz ([email protected])
* Date: 4/5/13
* Time: 1:51 AM
*/
public abstract class BufferWithEviction {
private long capacity;
public BufferWithEviction(long capacity) {
this.capacity = capacity;
}
public long getCapacity() {
return capacity;
}
public void setCapacity(long capacity) {
this.capacity = capacity;
}
protected abstract Q evict();
protected abstract boolean evict(long cost);
public abstract int size();
public abstract int drainTo(Collection collection);
public abstract boolean add(Q element);
}