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.
   */
  
  /**
   * Array write speed test.
   */
  public class Main {
      /** whether to report times */
      static boolean timing = false;
  
      static final int STORAGE_SIZE = 128*1024;
      static int[] mStorage = new int[STORAGE_SIZE];
  
      static public void report(long start, long end) {
          if (! timing) {
              return;
          }
  
          System.out.println("Finished in " + ((end - start) / 1000000.0)
              + " msec");
      }
  
      static void writeArray(int val) {
          for (int i = STORAGE_SIZE-1; i >= 0; i--)
              mStorage[i] = val;
      }
  
      static void writeTest() {
          long start, end;
  
          writeArray(0);  // touch all the memory
  
          System.out.println("Running writeTest...");
          start = System.nanoTime();
          for (int i = 1; i < 20; i++)
              writeArray(i);
          end = System.nanoTime();
  
          report(start, end);
      }
  
      static void copyTest() {
          long start, end;
  
          // touch once
          System.arraycopy(mStorage, 0, mStorage,
              STORAGE_SIZE/2, STORAGE_SIZE/2);
  
          System.out.println("Running copyTest...");
          start = System.nanoTime();
          for (int i = 1; i < 35; i++) {
              System.arraycopy(mStorage, 0, mStorage,
                  STORAGE_SIZE/2, STORAGE_SIZE/2);
          }
          end = System.nanoTime();
  
          report(start, end);
      }
  
      public static void array_028() {
          writeTest();
          copyTest();
          System.out.println("Done!");
      }
  
      public static void main(String[] args) {
          if ((args.length >= 1) && args[0].equals("--timing")) {
              timing = true;
          }
          array_028();
      }
  }
  