artyom_h31

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Oct 21st, 2020
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  1. /*
  2. * Copyright (c) 2014, Oracle America, Inc.
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. *
  8. * * Redistributions of source code must retain the above copyright notice,
  9. * this list of conditions and the following disclaimer.
  10. *
  11. * * Redistributions in binary form must reproduce the above copyright
  12. * notice, this list of conditions and the following disclaimer in the
  13. * documentation and/or other materials provided with the distribution.
  14. *
  15. * * Neither the name of Oracle nor the names of its contributors may be used
  16. * to endorse or promote products derived from this software without
  17. * specific prior written permission.
  18. *
  19. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20. * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22. * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  23. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25. * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26. * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27. * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  29. * THE POSSIBILITY OF SUCH DAMAGE.
  30. */
  31.  
  32. package org.example;
  33.  
  34. import org.openjdk.jmh.annotations.*;
  35. import org.openjdk.jmh.infra.Blackhole;
  36.  
  37. import java.util.*;
  38. import java.util.stream.Collectors;
  39.  
  40. import static java.util.concurrent.TimeUnit.MICROSECONDS;
  41. import static java.util.concurrent.TimeUnit.MILLISECONDS;
  42.  
  43. public class MyBenchmark {
  44.  
  45. @State(Scope.Benchmark)
  46. public static class BenchmarkState {
  47. @Param({"0", "100000", "200000", "300000", "400000", "500000",
  48. "600000", "700000", "800000"})
  49. public int listSize;
  50.  
  51. public List<Integer> testList = new ArrayList<>();
  52.  
  53. @Setup(Level.Trial)
  54. public void setUp() {
  55. // for (int i = 0; i < listSize; i++) {
  56. // testList.add(i);
  57. // }
  58. testList = new Random()
  59. .ints()
  60. .limit(listSize)
  61. .boxed()
  62. .collect(Collectors.toList());
  63. }
  64. }
  65.  
  66. @Fork(value = 1, warmups = 1)
  67. @Warmup(iterations = 1, time = 500, timeUnit = MILLISECONDS)
  68. @Benchmark
  69. @BenchmarkMode(Mode.AverageTime)
  70. @OutputTimeUnit(value = MICROSECONDS)
  71. @Measurement(iterations = 5, time = 200, timeUnit = MILLISECONDS)
  72. public void atomicLong(Blackhole blackhole, BenchmarkState state) {
  73. List<Integer> list = new LinkedList<>();
  74. for (Integer i : state.testList) {
  75. list.add(i);
  76. }
  77. // list.addAll(state.testList);
  78. blackhole.consume(list);
  79.  
  80. // Set<Integer> set = new TreeSet<>();
  81. // set.addAll(state.testList);
  82. // blackhole.consume(set);
  83.  
  84. // AtomicLong atomicLong = new AtomicLong();
  85. // state.testList.forEach(atomicLong::addAndGet);
  86. // blackhole.consume(atomicLong.get());
  87. }
  88. }
  89.  
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