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;
  
  import net.openhft.chronicle.values.MaxUtf8Length;
  import net.openhft.chronicle.values.Values;
  
  public class LataTest {
  
      private static int max = 6000000;
      private static int run = 100;
      private static int currentRun = 0;
  
      public static void main(String[] args) throws Exception {
          long startTime = 0;
          long endTime = 0;
  
          ChronicleMapBuilder<StringValue, IData> builder = ChronicleMapBuilder
                  .of(StringValue.class, IData.class)
                  .entries(max + 1000000);
  
          ChronicleMap<StringValue, IData> map = builder.create();
          StringValue[] keys = new StringValue[300];
          for (int i = 0; i < keys.length; i++) {
              keys[i] = Values.newHeapInstance(StringValue.class);
              keys[i].setValue("" + i);
          }
          IData value = Values.newHeapInstance(IData.class);
          IData dataValue = Values.newHeapInstance(IData.class);
          for (int index = 0; index < run; index++) {
              currentRun++;
              startTime = System.nanoTime();
              for (int i = 0; i < max; i++) {
                  StringValue key = keys[i % keys.length];
                  if (!(map.containsKey(key))) {
                      value.setData(i);
                      map.put(key, value);
                  } else {
                      value = map.acquireUsing(key, dataValue);
                      value.addAtomicData(10);
                  }
              }
              endTime = System.nanoTime();
              map.clear();
              System.out.println("Run" + currentRun + "Time taken"
                      + (endTime - startTime));
          }
          map.close();
      }
  
      public interface IData {
          int getData();
  
          void setData(int data);
  
          int addAtomicData(int addData);
      }
  
      interface StringValue {
          CharSequence getValue();
  
          void setValue(@MaxUtf8Length(64) CharSequence value);
      }
  }
  