RFR: 8299915: Remove ArrayAllocatorMallocLimit and associated code [v2]

[Afshin Zafari]

On Tue, 26 Sep 2023 02:04:14 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Afshin Zafari has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   other size_t flags than the ArrayAllocatorMallocLimit are used in tests.
>
> test/hotspot/jtreg/serviceability/attach/AttachSetGetFlag.java line 62:
> 
>> 60:     // Test a non-manageable size_t flag.
>> 61:     // Since it is not manageable, we can't test the setFlag functionality.
>> 62:     testGetFlag("StringDeduplicationCleanupDeadMinimum", "128");
> 
> A non-experimental flag, like MetaspaceSize, might be better long term in case the experimental flag get removed again.

When `MetaspaceSize` is set to 0, following assertion raised at metaspace.cpp: 316
```C++
size_t MetaspaceGC::capacity_until_GC() {
  size_t value = Atomic::load_acquire(&_capacity_until_GC);
  assert(value >= MetaspaceSize, "Not initialized properly?");  // <-----
  return value;
}

`LargePageSizeInBytes` is used instead.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15859#discussion_r1336812986