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benchmarks/src/main/java/com/esotericsoftware/kryo/benchmarks/BigDecimalBenchmark.java
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|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package com.esotericsoftware.kryo.benchmarks; | ||
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|
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| import com.esotericsoftware.kryo.Serializer; | ||
| import com.esotericsoftware.kryo.io.Input; | ||
| import com.esotericsoftware.kryo.io.Output; | ||
| import com.esotericsoftware.kryo.serializers.DefaultSerializers; | ||
| import org.openjdk.jmh.annotations.Benchmark; | ||
| import org.openjdk.jmh.annotations.Level; | ||
| import org.openjdk.jmh.annotations.Param; | ||
| import org.openjdk.jmh.annotations.Scope; | ||
| import org.openjdk.jmh.annotations.Setup; | ||
| import org.openjdk.jmh.annotations.State; | ||
| import org.openjdk.jmh.annotations.TearDown; | ||
| import org.openjdk.jmh.runner.Runner; | ||
| import org.openjdk.jmh.runner.RunnerException; | ||
| import org.openjdk.jmh.runner.options.Options; | ||
| import org.openjdk.jmh.runner.options.OptionsBuilder; | ||
|
|
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| import java.math.BigDecimal; | ||
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| import static java.lang.Integer.parseInt; | ||
| import static java.math.BigDecimal.ONE; | ||
| import static java.math.BigDecimal.ZERO; | ||
| import static java.util.concurrent.TimeUnit.MICROSECONDS; | ||
| import static org.openjdk.jmh.runner.options.TimeValue.seconds; | ||
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|
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| public class BigDecimalBenchmark { | ||
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| @State(Scope.Thread) | ||
| public static class MyState { | ||
| final Serializer<BigDecimal> serializer = new DefaultSerializers.BigDecimalSerializer(); | ||
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| Output output; | ||
| Input input; | ||
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| @Param({ | ||
| "null", "zero", "one", "0", | ||
| "2", "10", "max_in_long", "20", // twenty is more than the number of digits in Long.MAX_VALUE | ||
| "-2", "-10", "min_in_long", "-20" // twenty is more than the number of digits in Long.MIN_VALUE | ||
| }) | ||
| String numOfDigits = "5"; | ||
| int scale = 2; | ||
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| BigDecimal decimal; | ||
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| @Setup(Level.Iteration) | ||
| public void setUp() { | ||
| decimal = newDecimal(numOfDigits, scale); | ||
| output = new Output(2, -1); | ||
| serializer.write(null, output, decimal); | ||
| input = new Input(output.toBytes()); | ||
| output.reset(); | ||
| } | ||
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| private static BigDecimal newDecimal(String numOfDigits, int scale) { | ||
| switch (numOfDigits) { | ||
| case "null": return null; | ||
| case "zero": return ZERO; | ||
| case "one": return ONE; | ||
| case "0": return BigDecimal.valueOf(0, scale); | ||
| case "max_in_long": return BigDecimal.valueOf(Long.MAX_VALUE, scale); | ||
| case "min_in_long": return BigDecimal.valueOf(Long.MIN_VALUE, scale); | ||
| default: | ||
| int digits = parseInt(numOfDigits.replace("-", "")); | ||
| BigDecimal d = BigDecimal.valueOf(10, 1 - digits).subtract(ONE).scaleByPowerOfTen(-scale); // '9' repeated numOfDigit times | ||
| return numOfDigits.charAt(0) != '-' ? d : d.negate(); | ||
| } | ||
| } | ||
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| @TearDown(Level.Iteration) | ||
| public void tearDown () { | ||
| output.close(); | ||
| input.close(); | ||
| } | ||
| } | ||
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| @Benchmark | ||
| public byte[] write (MyState state) { | ||
| state.output.reset(); | ||
| state.serializer.write(null, state.output, state.decimal); | ||
| return state.output.getBuffer(); | ||
| } | ||
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| @Benchmark | ||
| public BigDecimal read (MyState state) { | ||
| state.input.reset(); | ||
| return state.serializer.read(null, state.input, BigDecimal.class); | ||
| } | ||
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| public static void main (String[] args) throws RunnerException { | ||
| final Options opt = new OptionsBuilder() | ||
| .include(".*" + BigDecimalBenchmark.class.getSimpleName() + ".*") | ||
| .timeUnit(MICROSECONDS) | ||
| .warmupIterations(1) | ||
| .warmupTime(seconds(1)) | ||
| .measurementIterations(4) | ||
| .measurementTime(seconds(1)) | ||
| .forks(1) | ||
| .build(); | ||
| new Runner(opt).run(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,5 @@ | ||
| eclipse.preferences.version=1 | ||
| org.eclipse.jdt.apt.aptEnabled=true | ||
| org.eclipse.jdt.apt.genSrcDir=.apt_generated | ||
| org.eclipse.jdt.apt.genTestSrcDir=.apt_generated_tests | ||
| org.eclipse.jdt.apt.reconcileEnabled=true |
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