kafka ThreadUtils 源码
kafka ThreadUtils 代码
文件路径：/clients/src/main/java/org/apache/kafka/common/utils/ThreadUtils.java
/*
* 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.kafka.common.utils;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicLong;
/**
* Utilities for working with threads.
*/
public class ThreadUtils {
/**
* Create a new ThreadFactory.
*
* @param pattern The pattern to use. If this contains %d, it will be
* replaced with a thread number. It should not contain more
* than one %d.
* @param daemon True if we want daemon threads.
* @return The new ThreadFactory.
*/
public static ThreadFactory createThreadFactory(final String pattern,
final boolean daemon) {
return new ThreadFactory() {
private final AtomicLong threadEpoch = new AtomicLong(0);
@Override
public Thread newThread(Runnable r) {
String threadName;
if (pattern.contains("%d")) {
threadName = String.format(pattern, threadEpoch.addAndGet(1));
} else {
threadName = pattern;
}
Thread thread = new Thread(r, threadName);
thread.setDaemon(daemon);
return thread;
}
};
}
}
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