| /* |
| * 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.openejb.util; |
| |
| import org.apache.openejb.config.DeploymentsResolver; |
| |
| import java.io.PrintStream; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * @version $Rev$ $Date$ |
| */ |
| public class PerformanceTimer { |
| |
| protected Start start; |
| private Event event; |
| |
| public PerformanceTimer() { |
| event = start = new Start(); |
| } |
| |
| public void event(String event) { |
| this.event = new Event(this.event, event); |
| } |
| |
| public void stop(PrintStream out) { |
| Event event = new Event(this.event, "stop"); |
| this.event.stop(event, out); |
| start.stop(event, out); |
| } |
| |
| private class Event { |
| protected final long start = System.nanoTime(); |
| private final Event previous; |
| private final String description; |
| |
| private Event(Event previous, String description) { |
| this.previous = previous; |
| this.description = description; |
| } |
| |
| public void stop(Event next, PrintStream out) { |
| if (previous != PerformanceTimer.this.start) previous.stop(this, out); |
| out.printf("%s %s", TimeUnit.NANOSECONDS.toMillis(next.start - this.start), this.description); |
| out.println(); |
| } |
| } |
| private class Start extends Event { |
| private Start() { |
| super(null, "start"); |
| } |
| |
| @Override |
| public void stop(Event next, PrintStream out) { |
| out.printf("%s %s", TimeUnit.NANOSECONDS.toMillis(next.start - this.start), "total"); |
| out.println(); |
| } |
| } |
| } |