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  1. JDK
  2. JDK-8241371

Refactor and consolidate package_from_name

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    • b16

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      JDK-8153858 partially consolidated the logic shared between InstanceKlass::package_from_name and ClassLoader::package_from_name. Unfortunately it also caused an undetected regression in some paths due need to copy from Symbol -> resource char arrays and back again.

      An empirical experiment shows we can improve performance and consolidate to a single implementation by keeping the implementation as a Symbol:

      http://cr.openjdk.java.net/~redestad/scratch/pkg_lookups.00/

      This reduces retired instructions on Hello World by ~400k, or ~0.4%

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