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  1. JDK
  2. JDK-8024649 Umbrella: Lambda linkage performance
  3. JDK-8024635

Caching MethodType's descriptor string improves lambda linkage performance

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    • Subcomponent:
    • Resolved In Build:
      b117
    • CPU:
      generic
    • OS:
      generic

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        Description

        MethodType.toMethodDescriptorString() is frequently invoked when generating lambda classes from InnerClassLambdaMetafactory.
        Caching resulting string into the field of MethodType gives +5% - +10% to lambda linkage performance.

        Minor performance improvement: private method "checkPtype" was inlined and eliminated. "checkRtype" and "checkPtypes" were refactored for better perfomance in HotSpot interpreter (important for lambda linkage). overall result +1%.

        Attached webrev contains fix: please review.

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                Assignee:
                jrose John Rose
                Reporter:
                skuksenko Sergey Kuksenko
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