nfsantos commented on code in PR #1721: URL: https://github.com/apache/jackrabbit-oak/pull/1721#discussion_r1763328964
########## oak-run-commons/src/main/java/org/apache/jackrabbit/oak/index/indexer/document/flatfile/pipelined/ThreadMonitor.java: ########## @@ -0,0 +1,134 @@ +/* + * 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.jackrabbit.oak.index.indexer.document.flatfile.pipelined; + +import org.apache.jackrabbit.guava.common.base.Stopwatch; +import org.apache.jackrabbit.oak.plugins.index.FormattingUtils; +import org.jetbrains.annotations.NotNull; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.lang.management.GarbageCollectorMXBean; +import java.lang.management.ManagementFactory; +import java.lang.management.MemoryMXBean; +import java.lang.management.ThreadMXBean; +import java.util.Comparator; +import java.util.List; +import java.util.concurrent.CopyOnWriteArraySet; +import java.util.concurrent.Executors; +import java.util.concurrent.ThreadFactory; + +/** + * Keeps track of a list of threads and prints statistics of CPU usage of the threads. It also prints statistics + * of memory usage and garbage collections + */ +public class ThreadMonitor { + /** + * Thread factory that registers all new threads with a given thread monitor. This can be passed to an Executor, so + * that all of its threads will be monitored, which may be simpler than manually registering each individual thread. + */ + public static class AutoRegisteringThreadFactory implements ThreadFactory { Review Comment: Moved the inner static class to the end. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
