RFR: 8311821: Simplify ParallelGCThreadsConstraintFunc after CMS removal [v3]

[Aleksey Shipilev]

On Fri, 21 Jul 2023 20:21:54 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Jenny Shivayogi has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   eliminate ParallelGCThreadsConstraintFunc
>
> src/hotspot/share/gc/shared/gc_globals.hpp line 136:
> 
>> 134:   product(uint, ParallelGCThreads, 0,                                       \
>> 135:           "Number of parallel threads parallel gc will use")                \
>> 136:           range(0, INT_MAX)                                                 \
> 
> A comment to explain the range restriction seems useful.

+1. Something like:


  /* notice: the max range value here is INT_MAX not UINT_MAX */            \
  /* to protect from overflows                                */            \
  product(uint, ParallelGCThreads, 0,                                       \
          "Number of parallel threads parallel gc will use")                \
          range(0, INT_MAX)                                                 \

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PR Review Comment: https://git.openjdk.org/jdk/pull/14965#discussion_r1272153714