/*
    * Copyright (C) 2010 The Guava Authors
    *
    * 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 com.google.common.base;
  
  import com.google.caliper.Benchmark;
  import com.google.common.base.Objects;
  
  /**
   * Some microbenchmarks for the {@link Objects} class.
   *
   * @author Ben L. Titzer
   */
  public class ObjectsBenchmark {
  
    private static final Integer I0 = -45;
    private static final Integer I1 = -1;
    private static final Integer I2 = 3;
    private static final String S0 = "3";
    private static final String S1 = "Ninety five";
    private static final String S2 = "44 one million";
    private static final String S3 = "Lowly laundry lefties";
    private static final String S4 = "89273487U#*&#";
    private static final Double D0 = 9.234d;
    private static final Double D1 = -1.2e55;
  
    @Benchmark int hashString_2(int reps) {
      int dummy = 0;
      for (int i = 0; i < reps; i++) {
        dummy += Objects.hashCode(S0, S1);
      }
      return dummy;
    }
  
    @Benchmark int hashString_3(int reps) {
      int dummy = 0;
      for (int i = 0; i < reps; i++) {
        dummy += Objects.hashCode(S0, S1, S2);
      }
      return dummy;
    }
  
    @Benchmark int hashString_4(int reps) {
      int dummy = 0;
      for (int i = 0; i < reps; i++) {
        dummy += Objects.hashCode(S0, S1, S2, S3);
      }
      return dummy;
    }
  
    @Benchmark int hashString_5(int reps) {
      int dummy = 0;
      for (int i = 0; i < reps; i++) {
        dummy += Objects.hashCode(S0, S1, S2, S3, S4);
      }
      return dummy;
    }
  
    @Benchmark int hashMixed_5(int reps) {
      int dummy = 0;
      for (int i = 0; i < reps; i++) {
        dummy += Objects.hashCode(I2, S1, D1, S2, I0);
        dummy += Objects.hashCode(D0, I1, S3, I2, S0);
      }
      return dummy;
    }
  }