code: /*
   * Copyright 2012-2018 Chronicle Map Contributors
   *
   * 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.
   */
  
  package net.openhft.chronicle.map.fromdocs.pingpong_latency;
  
  import net.openhft.chronicle.map.ChronicleMap;
  import net.openhft.chronicle.map.fromdocs.BondVOInterface;
  
  import java.io.IOException;
  import java.util.Arrays;
  
  import static net.openhft.chronicle.values.Values.newNativeReference;
  
  public class PingPongAddLeft {
      public static void main(String... ignored) throws IOException {
          ChronicleMap<String, BondVOInterface> chm = PingPongCASLeft.acquireCHM();
  
          playPingPong(chm, +1, true, "PingPongAddLEFT");
      }
  
      static void playPingPong(ChronicleMap<String, BondVOInterface> chm, double add, boolean setFirst, final String desc) {
          BondVOInterface bond1 = newNativeReference(BondVOInterface.class);
          BondVOInterface bond2 = newNativeReference(BondVOInterface.class);
          BondVOInterface bond3 = newNativeReference(BondVOInterface.class);
          BondVOInterface bond4 = newNativeReference(BondVOInterface.class);
  
          chm.acquireUsing("369604101", bond1);
          chm.acquireUsing("369604102", bond2);
          chm.acquireUsing("369604103", bond3);
          chm.acquireUsing("369604104", bond4);
          System.out.printf("\n\n" + desc + ": Timing off-heap operations on /dev/chm/RDR_DIM_Mock\n");
          if (setFirst) {
              bond1.setCoupon(add);
              bond2.setCoupon(add);
              bond3.setCoupon(add);
              bond4.setCoupon(add);
          }
          int timeToCallNanoTime = 30;
          int runs = 1000000;
          long[] timings = new long[runs];
          for (int j = 0; j < 100; j++) {
              for (int i = 0; i < runs; i++) {
                  long _start = System.nanoTime();
                  bond1.addAtomicCoupon(add);
                  bond2.addAtomicCoupon(add);
                  bond3.addAtomicCoupon(add);
                  bond4.addAtomicCoupon(add);
                  timings[i] = (System.nanoTime() - _start - timeToCallNanoTime) / 4;
              }
              Arrays.sort(timings);
              System.out.printf("#%d:  atomic add coupon 50/90/99%%tile was %,d / %,d / %,d%n",
                      j, timings[runs / 2], timings[runs * 9 / 10], timings[runs * 99 / 100]);
          }
      }
  }