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Posted to dev@harmony.apache.org by Weldon Washburn <we...@gmail.com> on 2006/09/01 21:59:28 UTC
[DRLVM][GC] MMTk port now ready for write barrier integration
All,
A late night IM debug session with Steve Blackburn got the DRLVM/MMTk port
to the point where it makes sense to try write barrier integration.
All the mods I have been working on plus simple gc regression tests have
been committed to drlvm\trunk\vm\mmtk. DRLVM/MMTk now runs the following
garabage collector algorithms in "user-mode":
marksweep
semispace
copyms
genms (with IGNORE_REMSETS = true)
By setting IGNORE_REMSETS=false, MMTk depends on fully implemented, correct
write barriers to do its job.
--
Weldon Washburn
Intel Middleware Products Division
Re: [DRLVM][GC] MMTk port now ready for write barrier integration
Posted by Weldon Washburn <we...@gmail.com>.
On 9/4/06, Ivan Volosyuk <iv...@gmail.com> wrote:
>
> Weldon,
>
> what is the "user-mode"?
Thanks for asking. Basically I call MMTk's object alloc() routine from java
application code instead of from DRLVM JIT runtime helper. I use vmmagic to
patch up stuff. The trick is to hide the objects allocated out of MMTk's
heap from the underlying GCV4. For more detail, please look at
drlvm/trunk/vm/mmtk/*.java files.
--
> Ivan
>
> On 9/1/06, Weldon Washburn <we...@gmail.com> wrote:
> > All,
> >
> > A late night IM debug session with Steve Blackburn got the DRLVM/MMTk
> port
> > to the point where it makes sense to try write barrier integration.
> > All the mods I have been working on plus simple gc regression tests have
> > been committed to drlvm\trunk\vm\mmtk. DRLVM/MMTk now runs the
> following
> > garabage collector algorithms in "user-mode":
> >
> > marksweep
> > semispace
> > copyms
> > genms (with IGNORE_REMSETS = true)
> >
> > By setting IGNORE_REMSETS=false, MMTk depends on fully implemented,
> correct
> > write barriers to do its job.
> >
> >
> > --
> > Weldon Washburn
> > Intel Middleware Products Division
> >
> >
>
>
> --
> Ivan
> Intel Middleware Products Division
>
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>
--
Weldon Washburn
Intel Middleware Products Division
Re: [DRLVM][GC] MMTk port now ready for write barrier integration
Posted by Ivan Volosyuk <iv...@gmail.com>.
Weldon,
what is the "user-mode"?
--
Ivan
On 9/1/06, Weldon Washburn <we...@gmail.com> wrote:
> All,
>
> A late night IM debug session with Steve Blackburn got the DRLVM/MMTk port
> to the point where it makes sense to try write barrier integration.
> All the mods I have been working on plus simple gc regression tests have
> been committed to drlvm\trunk\vm\mmtk. DRLVM/MMTk now runs the following
> garabage collector algorithms in "user-mode":
>
> marksweep
> semispace
> copyms
> genms (with IGNORE_REMSETS = true)
>
> By setting IGNORE_REMSETS=false, MMTk depends on fully implemented, correct
> write barriers to do its job.
>
>
> --
> Weldon Washburn
> Intel Middleware Products Division
>
>
--
Ivan
Intel Middleware Products Division
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