RFR: 8354897: Support Soft/Weak Reference in AOT cache [v7]

[Ioi Lam]

On Wed, 30 Apr 2025 00:28:40 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

>> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   @fisk comment -- use proper HeapAccess to load referent; Also refactor AOTReferenceObjSupport::is_enabled()
>
> src/hotspot/share/cds/aotReferenceObjSupport.cpp line 122:
> 
>> 120:   ik->initialize(CHECK);
>> 121: 
>> 122:   TempNewSymbol field_name = SymbolTable::new_symbol("N""ULL");
> 
> Why "N""ULL", not "NULL"?

That's because a stand-lone word "NULL" will cause hotspot/jtreg/sources/TestNoNULL.java to fail. I have renamed the internal field to NULL_QUEUE to avoid the failure, per recommendation of @kimbarrett

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PR Review Comment: https://git.openjdk.org/jdk/pull/24757#discussion_r2067691778