001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache license, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the license for the specific language governing permissions and
015 * limitations under the license.
016 */
017
018package org.apache.logging.log4j.core.util;
019
020import java.util.concurrent.atomic.AtomicLong;
021
022/**
023 * Prefixes thread names with {@code "Log4j2-"}.
024 */
025public class Log4jThread extends Thread {
026
027    static final String PREFIX = "Log4j2-";
028
029    private static final AtomicLong threadInitNumber = new AtomicLong();
030
031    private static long nextThreadNum() {
032        return threadInitNumber.getAndIncrement();
033    }
034
035    private static String toThreadName(final Object name) {
036        return PREFIX + name;
037    }
038
039    public Log4jThread() {
040        super(toThreadName(nextThreadNum()));
041    }
042
043    public Log4jThread(final Runnable target) {
044        super(target, toThreadName(nextThreadNum()));
045    }
046
047    public Log4jThread(final Runnable target, final String name) {
048        super(target, toThreadName(name));
049    }
050
051    public Log4jThread(final String name) {
052        super(toThreadName(name));
053    }
054
055    public Log4jThread(final ThreadGroup group, final Runnable target) {
056        super(group, target, toThreadName(nextThreadNum()));
057    }
058
059    public Log4jThread(final ThreadGroup group, final Runnable target, final String name) {
060        super(group, target, toThreadName(name));
061    }
062
063    public Log4jThread(final ThreadGroup group, final Runnable target, final String name, final long stackSize) {
064        super(group, target, toThreadName(name), stackSize);
065    }
066
067    public Log4jThread(final ThreadGroup group, final String name) {
068        super(group, toThreadName(name));
069    }
070
071}