Java tutorial
// Copyright 2015 Google Inc. All rights reserved. // // Licensed 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 com.google.devtools.build.lib.exec; import com.google.common.base.Preconditions; import com.google.devtools.build.lib.actions.ActionMetadata; import com.google.devtools.build.lib.util.BlazeClock; import java.util.concurrent.TimeUnit; import java.util.logging.Logger; /** * Utility class for logging time of locally executed actions. */ class LocalActionLogging { private static final Logger LOG = Logger.getLogger(LocalActionLogging.class.getName()); private final ActionMetadata action; private final long startTime; private boolean isRunning = true; LocalActionLogging(ActionMetadata action) { this.action = action; startTime = BlazeClock.nanoTime(); LOG.info("Started to run " + action.prettyPrint()); } void finish() { Preconditions.checkState(isRunning, action); isRunning = false; LOG.info("Finished running " + action.prettyPrint() + " in " + TimeUnit.NANOSECONDS.toMillis(BlazeClock.nanoTime() - startTime) + "ms"); } }