content: /*
   * Copyright (C) 2007 The Android Open Source Project
   *
   * 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.
   */
  
  /**
   * Exercise Object.wait(), comparing results against wall clock time.
   */
  public class Main {
      /* delays, in milliseconds */
      private final static long[] DELAYS = {
          200, 500, 1000, 2000, 3500, 8000
      };
  
      public static void main(String[] args) {
          boolean timing = (args.length >= 1) && args[0].equals("--timing");
          doit(timing);
      }
  
      public static void doit(boolean timing) {
          Object sleepy = new Object();
          long start, end;
  
          synchronized (sleepy) {
              try {
                  sleepy.wait(-500);
                  System.out.println("HEY: didn't throw on negative arg");
              } catch (IllegalArgumentException iae) {
                  System.out.println("Caught expected exception on neg arg");
              } catch (InterruptedException ie) {
                  ie.printStackTrace();
              }
  
              for (long delay : DELAYS) {
                  System.out.println("Waiting for " + delay + "ms...");
  
                  start = System.currentTimeMillis();
                  try {
                      sleepy.wait(delay);
                  } catch (InterruptedException ie) {
                      ie.printStackTrace();
                  }
                  end = System.currentTimeMillis();
  
                  long elapsed = end - start;
                  boolean showTime = timing;
  
                  if (! timing) {
                      long epsilon = delay / 10;
                      if (epsilon > 50) {
                          epsilon = 50;
                      }
  
                      long min = delay - epsilon;
                      long max = delay + epsilon;
  
                      if (elapsed < min) {
                          System.out.println("  Elapsed time was too short");
                          showTime = true;
                      } else if (elapsed > max) {
                          System.out.println("  Elapsed time was too long: "
                              + "elapsed=" + elapsed + " max=" + max);
                          showTime = true;
                      }
                  }
  
                  if (showTime) {
                      System.out.println("  Wall clock elapsed "
                              + elapsed + "ms");
                  }
              }
          }
      }
  }
  