| /******************************************************************************** |
| * 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. |
| * |
| * Performance timer factory. |
| * |
| * $Header:$ |
| */ |
| |
| |
| package org.apache.pig.tools.timer; |
| |
| import java.io.PrintStream; |
| import java.lang.String; |
| import java.util.HashMap; |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.apache.pig.tools.timer.PerformanceTimer; |
| |
| |
| public class PerformanceTimerFactory |
| { |
| |
| /** |
| * Get the timer factory. |
| * @return timer factory. |
| */ |
| public static PerformanceTimerFactory getPerfTimerFactory() |
| { |
| if (self == null) { |
| self = new PerformanceTimerFactory(); |
| } |
| return self; |
| } |
| |
| /** |
| * Get a performance timer. If the indicated timer does not exist, it will be |
| * created. If a timer of that name already exists, it will be returned. |
| * @param name Name of the timer to return. |
| * @return the timer. |
| */ |
| public PerformanceTimer getTimer(String name) |
| { |
| PerformanceTimer timer = mTimers.get(name); |
| if (timer == null) { |
| timer = new PerformanceTimer(name); |
| mTimers.put(name, timer); |
| } |
| return timer; |
| } |
| |
| /** |
| * Call print on all of the known performance timers. |
| * @param out output stream to dump to |
| */ |
| public void dumpTimers(PrintStream out) |
| { |
| Collection<PerformanceTimer> c = mTimers.values(); |
| Iterator<PerformanceTimer> i = c.iterator(); |
| while (i.hasNext()) { |
| i.next().print(out); |
| } |
| } |
| |
| public void dumpTimers() |
| { |
| dumpTimers(System.out); |
| } |
| |
| private static PerformanceTimerFactory self = null; |
| |
| private PerformanceTimerFactory() |
| { |
| mTimers = new HashMap<String, PerformanceTimer>(); |
| } |
| |
| HashMap<String, PerformanceTimer> mTimers; |
| |
| } |