Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.examples.group.utils.timer;
020
021import java.util.logging.Level;
022import java.util.logging.Logger;
023
024/**
025 * Timer.
026 */
027public class Timer implements AutoCloseable {
028
029  private static final Logger LOG = Logger.getLogger(Timer.class.getName());
030
031  public static final int MINUTES = 60 * 1000;  // ms
032  public static final int HOURS = 60 * MINUTES;
033
034  private final Logger log;
035  private final Level level;
036  private final String description;
037  private final long timeStart;
038
039  public Timer(final Logger log, final String description) {
040    this(log, Level.INFO, description);
041  }
042
043  public Timer(final String description) {
044    this(LOG, Level.INFO, description);
045  }
046
047  public Timer(final Logger log, final Level level, final String description) {
048    this.log = log;
049    this.level = level;
050    this.description = description;
051    this.timeStart = System.currentTimeMillis();
052    this.log.log(this.level, "TIMER Start: {0}", this.description);
053  }
054
055  @Override
056  public void close() {
057    final long timeEnd = System.currentTimeMillis();
058    this.log.log(this.level, "TIMER End: {0} took {1} sec.",
059        new Object[]{this.description, (timeEnd - this.timeStart) / 1000.0});
060  }
061}