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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package ch.qos.logback.core.contention;
15  
16  /**
17   * Useful scaffolding to measure the throughput of certain operations when
18   * invoked by multiple threads.
19   * 
20   * @author Joern Huxhorn
21   * @author Ralph Goers
22   * @author Ceki Gulcu
23   */
24  public class ThreadedThroughputCalculator extends MultiThreadedHarness {
25  
26      public ThreadedThroughputCalculator(long overallDurationInMillis) {
27          super(overallDurationInMillis);
28      }
29  
30      public void printThroughput(String msg) throws InterruptedException {
31          printThroughput(msg, false);
32      }
33  
34      public void printThroughput(String msg, boolean detailed) throws InterruptedException {
35          long sum = 0;
36          for (RunnableWithCounterAndDone r : runnableArray) {
37              if (detailed) {
38                  System.out.println(r + " count=" + r.getCounter());
39              }
40              sum += r.getCounter();
41          }
42  
43          System.out.println(msg + "total of " + sum + " operations, or " + ((sum) / overallDurationInMillis) + " operations per millisecond");
44      }
45  }