mqliang commented on a change in pull request #6680: URL: https://github.com/apache/incubator-pinot/pull/6680#discussion_r597093906
########## File path: pinot-core/src/main/java/org/apache/pinot/core/query/request/context/ThreadTimer.java ########## @@ -0,0 +1,72 @@ +/** + * 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.pinot.core.query.request.context; + +import java.lang.management.ManagementFactory; +import java.lang.management.ThreadMXBean; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +/** + * The {@code ThreadTimer} class providing the functionality of measuring the CPU time for the current thread. + */ +public class ThreadTimer { + private static final ThreadMXBean MX_BEAN = ManagementFactory.getThreadMXBean(); + private static final boolean IS_CURRENT_THREAD_CPU_TIME_SUPPORTED = MX_BEAN.isCurrentThreadCpuTimeSupported(); + private static final Logger LOGGER = LoggerFactory.getLogger(ThreadTimer.class); + private static boolean IS_THREAD_CPU_TIME_MEASUREMENT_ENABLED = false; + private long _startTimeNs = -1; + private long _endTimeNs = -1; + + public ThreadTimer() { + } + + public static void setThreadCpuTimeMeasurementEnabled(boolean enable) { + IS_THREAD_CPU_TIME_MEASUREMENT_ENABLED = enable && IS_CURRENT_THREAD_CPU_TIME_SUPPORTED; + } + + public void start() { + if (IS_THREAD_CPU_TIME_MEASUREMENT_ENABLED) { + _startTimeNs = MX_BEAN.getCurrentThreadCpuTime(); + } + } + + public void stop() { + if (IS_THREAD_CPU_TIME_MEASUREMENT_ENABLED) { + _endTimeNs = MX_BEAN.getCurrentThreadCpuTime(); + } + } + + public long getThreadTimeNs() { + if (_startTimeNs == -1 || _endTimeNs == -1) { Review comment: Will send another PR to address this. -- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For additional commands, e-mail: commits-h...@pinot.apache.org
