32 lines
783 B
Java
32 lines
783 B
Java
// validating/jmh/JMH1.java
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// (c)2021 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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package validating.jmh;
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import java.util.*;
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import org.openjdk.jmh.annotations.*;
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import java.util.concurrent.TimeUnit;
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@State(Scope.Thread)
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.MICROSECONDS)
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// Increase these three for more accuracy:
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@Warmup(iterations = 5)
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@Measurement(iterations = 5)
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@Fork(1)
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public class JMH1 {
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private long[] la;
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@Setup
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public void setup() {
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la = new long[250_000_000];
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}
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@Benchmark
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public void setAll() {
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Arrays.setAll(la, n -> n);
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}
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@Benchmark
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public void parallelSetAll() {
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Arrays.parallelSetAll(la, n -> n);
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}
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}
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