"Converge [the] best features of HotSpot and JRockit" - what does this mean for OpenJDK?

David Herron david at davidherron.com
Mon Feb 1 16:41:17 UTC 2010

In Theory ...

Theoretically JRockit could be changed to implement the same interfaces
HotSpot implements so that JRocket could plug into the OpenJDK runtime.
 That would allow any VM to plug into the OpenJDK runtime.  This was the
goal of the Clean VM Interface project (


- David Herron,

On Mon, Feb 1, 2010 at 2:43 AM, Volker Simonis <volker.simonis at gmail.com>wrote:

> In its "Oracle + Sun: Transforming the IT Industry" strategy outlook
> Executive Vice President Thomas Kurian of Oracle mentioned that Oracle
> plans to "Converge [the] best features of HotSpot and JRockit" (slide
> 10 of
> http://www.oracle.com/ocom/groups/public/@ocom/documents/webcontent/044523.pdf
> ).
> Has anybody thought about what implications this could have for OpenJDK?
> My fears are that if HotSpot and JRockit will "converge" this means
> that OpenJDK will be abandoned, because JRockit isn't OpenSource and I
> haven't heared of any plans to open source it any time soon.
> Consequently, if JRockit is and will stay closed source, a convergence
> of HotSpot and JRockit can only happen in a "closed" version.
> Are there any sentiments regarding this topic?
> Regards,
> Volker

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