RFR: 8300236: Use VarHandle access in Data(Input | Output)Stream classes [v4]

Per Minborg pminborg at openjdk.org
Mon Jan 23 11:25:06 UTC 2023


On Mon, 23 Jan 2023 10:15:55 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> Very good question. I will take a look at it. A fixed value is inserted in the original var handle so potentially it might improve performance that way too.
>
> No significant performance increase:
> 
> 
> 2-parameters
> Benchmark                                             Mode  Cnt  Score   Error  Units
> PrimitiveFieldSerializationBenchmark.serializeData    avgt    8  6.761 ± 0.126  ns/op
> PrimitiveFieldSerializationBenchmark.serializeRecord  avgt    8  6.890 ± 0.093  ns/op
> 
> 3-parameters
> Benchmark                                             Mode  Cnt  Score   Error  Units
> PrimitiveFieldSerializationBenchmark.serializeData    avgt    8  6.850 ± 0.074  ns/op
> PrimitiveFieldSerializationBenchmark.serializeRecord  avgt    8  6.855 ± 0.057  ns/op

I will remove the extra methods with lesser parameters.

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PR: https://git.openjdk.org/jdk/pull/12076


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