/*
* 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.logging.log4j.spi;
import org.apache.logging.log4j.perf.nogc.OpenHashStringMap;
import org.apache.logging.log4j.util.ReadOnlyStringMap;
import org.apache.logging.log4j.util.StringMap;
import org.apache.logging.log4j.util.PropertiesUtil;
/**
* {@code OpenHashStringMap}-based implementation of the {@code ThreadContextMap} interface that creates a copy of
* the data structure on every modification. Any particular instance of the data structure is a snapshot of the
* ThreadContext at some point in time and can safely be passed off to other threads
*
* @since 2.7
*/
public class CopyOnWriteOpenHashMapThreadContextMap extends CopyOnWriteSortedArrayThreadContextMap {
/** Constant used in benchmark code */
public static final Class<? extends ThreadContextMap> SUPER = CopyOnWriteSortedArrayThreadContextMap.class;
@Override
protected StringMap createStringMap() {
return new OpenHashStringMap<>(PropertiesUtil.getProperties().getIntegerProperty(
PROPERTY_NAME_INITIAL_CAPACITY, DEFAULT_INITIAL_CAPACITY));
}
@Override
protected StringMap createStringMap(final ReadOnlyStringMap original) {
return new OpenHashStringMap<>(original);
}
}