RFR: 8273508: Support archived heap objects in SerialGC [v2]

[Ioi Lam]

On Thu, 23 Sep 2021 08:27:03 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   @tschatzl comments
>
> GC changes (and the bits around them) seem good to me.
> 
> We already discussed the (existing) pervasive usage of `uintptr_t` in other code calling the gc code for addresses in the java heap and using size_t/int/intx/whatever for offsets in private which I do not recommend to do. However if there is any change to be made, it's a separate issue.

Thanks @tschatzl and @calvinccheung for the review.

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PR: https://git.openjdk.java.net/jdk/pull/5596