x86 interpreters in hotspot

[Krystal Mok]

On Wed, May 16, 2012 at 12:12 AM, Xin Tong <xerox.time.tech at gmail.com>wrote:

> I imagine the adaptation happens in some trampoline code which sets up the
> context.
>
My slides did explain the TOS adaptation:
http://www.tektalk.org/2011/07/28/java-%E7%A8%8B%E5%BA%8F%E7%9A%84%E7%BC%96%E8%AF%91%EF%BC%8C%E5%8A%A0%E8%BD%BD-%E5%92%8C-%E6%89%A7%E8%A1%8C/


> also, i see the dispatch_epilogue called 220 times. however there are
> about 240 bytecodes in java ? should not it be called for every java
> bytecode ?
>
> Some bytecodes do their own dispatch, so dispatch_epilogue() is not
executed for them. Please see the end
of TemplateInterpreterGenerator::generate_and_dispatch(), and also see
TemplateTable::initialize() for the list of bytecodes that do dispatch on
their own.

- Kris


> Thanks
>
> Xin
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/attachments/20120516/bc954ec8/attachment.html