RFR: 8255131: G1CollectedHeap::is_in() returns wrong result [v2]

[Kim Barrett]

On Thu, 22 Oct 2020 11:30:30 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this change to exchange the broken G1CollectedHeap::is_in() by G1CollectedHeap::is_in_exact() that has the same performance profile and correct.
>> 
>> G1CollectedHeap::is_in() returns true for any region ever committed (and crashes for not yet committed regions), while is_in_exact() (almost) did the right thing. Almost because HeapRegionManager::is_available() would assert if the given pointer is outside the heap and it's not guarded by is_in_reserved.
>> 
>> Test: tier1
>> 
>> Thanks,
>>   Thomas
>
> Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:
> 
>   kbarrett, ayang reviews

Marked as reviewed by kbarrett (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/799