HotSpot development trees

David Holmes david.holmes at oracle.com
Wed Oct 26 19:35:11 PDT 2011


On 27/10/2011 8:49 AM, Dr Andrew John Hughes wrote:
> I see three HotSpot trees have appeared at hg.openjdk.java.net since
> I last imported one into OpenJDK6:
>
> hsx/hsx21/baseline and hsx/hsx21/master
> hsx/hsx22/hotspot
> hsx/hsx23/hotspot
>
> Which of these can be regarded as stable and can be integrated into
> OpenJDK6?

I think they are all "stable" (hs23 the least) but possibly the answer 
for OpenJDK6 is "none of the above".

hs20.X is used in our currentJDK6 update train (and hs19.X for earlier 
updates)
hs21 was jdk7
hs22 is 7u2
hs23 is current version for mainline and for next 7u after 7u2 (not sure 
why it's already forked off)

> The nomenclature also appears to have changed from baseline/master
> trees to just one called 'hotspot'.  Why is this?

The mainline tree is now hsx/hotspot-main, we then fork off hsx/hsxNN as 
needed. This started with hs22 IIRC.

David

> Thanks,


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