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- /*
- * Copyright (c) 2014, Oracle America, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * * Neither the name of Oracle nor the names of its contributors may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
- package org.example;
- import org.openjdk.jmh.annotations.*;
- import org.openjdk.jmh.infra.Blackhole;
- import java.util.*;
- import java.util.stream.Collectors;
- import static java.util.concurrent.TimeUnit.MICROSECONDS;
- import static java.util.concurrent.TimeUnit.MILLISECONDS;
- public class MyBenchmark {
- @State(Scope.Benchmark)
- public static class BenchmarkState {
- @Param({"0", "100000", "200000", "300000", "400000", "500000",
- "600000", "700000", "800000"})
- public int listSize;
- public List<Integer> testList = new ArrayList<>();
- @Setup(Level.Trial)
- public void setUp() {
- // for (int i = 0; i < listSize; i++) {
- // testList.add(i);
- // }
- testList = new Random()
- .ints()
- .limit(listSize)
- .boxed()
- .collect(Collectors.toList());
- }
- }
- @Fork(value = 1, warmups = 1)
- @Warmup(iterations = 1, time = 500, timeUnit = MILLISECONDS)
- @Benchmark
- @BenchmarkMode(Mode.AverageTime)
- @OutputTimeUnit(value = MICROSECONDS)
- @Measurement(iterations = 5, time = 200, timeUnit = MILLISECONDS)
- public void atomicLong(Blackhole blackhole, BenchmarkState state) {
- List<Integer> list = new LinkedList<>();
- for (Integer i : state.testList) {
- list.add(i);
- }
- // list.addAll(state.testList);
- blackhole.consume(list);
- // Set<Integer> set = new TreeSet<>();
- // set.addAll(state.testList);
- // blackhole.consume(set);
- // AtomicLong atomicLong = new AtomicLong();
- // state.testList.forEach(atomicLong::addAndGet);
- // blackhole.consume(atomicLong.get());
- }
- }
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