35 lines
821 B
Java
35 lines
821 B
Java
package micro.org.openjdk.bench.java.util;
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import org.openjdk.jmh.annotations.*;
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import org.openjdk.jmh.infra.Blackhole;
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import java.util.*;
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import java.util.concurrent.TimeUnit;
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/**
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* @see <a href="https://bugs.openjdk.org/browse/JDK-8274715">JDK-8274715</a>
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*/
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@Fork(value = 3)
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@State(Scope.Thread)
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@Warmup(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
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@Measurement(iterations = 5, time = 2, timeUnit = TimeUnit.SECONDS)
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public class NCopiesBenchmarks {
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@Param({"10", "50", "100"})
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int size;
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private List<Object> list;
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@Setup
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public void prepare() {
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list = Collections.nCopies(size, new Object());
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}
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@Benchmark
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public void forEach(Blackhole bh) {
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list.forEach(bh::consume);
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}
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}
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