-Original Message-
From: Geir Magnusson Jr. [mailto:[EMAIL PROTECTED]
Sent: Monday, May 16, 2005 3:22 PM
To: harmony-dev@incubator.apache.org
Subject: Re: Developing Harmony
On May 16, 2005, at 11:51 AM, Ben Laurie wrote:
I'm pretty sure we want a framework in C/C++, whatever
On 5/18/05, David Griffiths [EMAIL PROTECTED] wrote:
I think it's too slow to have the overhead of a function call for
every object allocation. This is the cost of modularization. I doubt
any of the mainstream JVMs you are competing with do this.
Yes. I agree. A clean interface would have a
state of research on formally proving a GC written in Java is
type-safe?
geir
--Steve
Weldon Washburn wrote:
On 5/18/05, David Griffiths [EMAIL PROTECTED] wrote:
I think it's too slow to have the overhead of a function call for
every object allocation. This is the cost
Steve,
Very interesting. Please point me to the web pages that show
SpecJAppServer/JBB/JVM... numbers for Jikes.
I see some mention of magic types. Does this work around the java
verifier by coercing a reference pointer into a Java int and
vice-versa? This could be done by calling a
On 5/19/05, Ahmed Saad [EMAIL PROTECTED] wrote:
Then, if the VM is written in Java it will be compiled to native code
using,
for example, gcj?
or it will be compiled to byte code and will be interpreted by itself?
One could interpret the VM code but it would be too slow for many. A
better
On 5/19/05, Stefano Mazzocchi [EMAIL PROTECTED] wrote:
This is why I would like Harmony to have two VMs, one written in java
and one written in C-or-friends: this would give us
Well, I suspect if we design the interfaces correctly, we could do the
above with one JVM instead of two. Two
On 5/20/05, Steve Blackburn [EMAIL PROTECTED] wrote:
I envisage that harmony is *seeded* with two VMs. Under the seeding
model both seeds are destined to die (that is, their *cores* die) once
new core/s evolve. I view this as a good thing.
Given a world with three different Harmony VMs, I
Interestingly Sun Solaris 9 dropped M:N threads. From
http://www.sun.com/software/whitepapers/solaris9/multithread.pdf, One
such innovation is the move away from the original MxN model to a 1:1
implementation. Again, this is not to say that a good
implementation of the MxN model is impossible,
On 5/23/05, Geir Magnusson Jr. [EMAIL PROTECTED] wrote:
On May 23, 2005, at 1:05 AM, Weldon Washburn wrote:
Interestingly Sun Solaris 9 dropped M:N threads. From
http://www.sun.com/software/whitepapers/solaris9/multithread.pdf, One
such innovation is the move away from the original MxN
On 5/25/05, Steve Blackburn [EMAIL PROTECTED] wrote:
I agree it is orthogonal to the language chosen to write the JIT. It
is not orthogonal to the language chosen to write the GC.
As you say, you really want the barrier expressed in either Java,
bytecode or IR. So you could write your GC in
On 5/26/05, Geir Magnusson Jr. [EMAIL PROTECTED] wrote:
Well, I think that wrt trying to eliminate C++ and C, you've just
moved the problem elsewhere - because we'll still need a set of
portable intrinsics and bootstrapper, and C++/C are natural candidates.
That said, I would assume that
Dims,
I would like to start filling out the modules and interfaces part of
harmonyArchitecture wiki page. I looked at the wiki revision history
and noticed that you were the last person to modify the page. Do you
know if there is a protocol for modifying this document. Do people
just make
On 6/23/05, Geir Magnusson Jr. [EMAIL PROTECTED] wrote:
Where is code we can start examining? What do the the java-on-java
implementations do?
geir
Geir,
I can't talk about code just yet. But I think we can at least get
started on the basic, low controversy APIs. For example, the
On 6/24/05, Geir Magnusson Jr. [EMAIL PROTECTED] wrote:
I know, but I'm going to taunt you anyway! Taunt!
Seriously, how about referring us to code in ORP at sourceforge?
You can download the last research posting of ORP from
http://sourceforge.net/projects/orp.
Two files in the bundle are
09:30:01 -0600, Tom Tromey [EMAIL PROTECTED] wrote:
Weldon == Weldon Washburn [EMAIL PROTECTED] writes:
Weldon Below is a first stab at the API to retrieve the values
Weldon contained in internal classloader data structures.
Weldon Comment/questions are appreciated.
Weldon Class access
Geir,
Any update on when Apache will have a license in place so that code
can be donated to Apache Harmony project?
Thanks
Weldon
On 6/24/05, Geir Magnusson Jr. [EMAIL PROTECTED] wrote:
On Jun 24, 2005, at 5:17 PM, Weldon Washburn wrote:
On 6/23/05, Geir Magnusson Jr. [EMAIL
On 6/30/05, Neil Macneale [EMAIL PROTECTED] wrote:
One of the reasons I am in favor of implementing as much of the JVM in
Java is that I think it is easier to write secure code in Java than in
C/C++.
I agree with this observation.
I was at Java One this week. Two days ago during a Q
On 6/30/05, Robin Garner [EMAIL PROTECTED] wrote:
[Flavio] Volunteered to do GC design and implementation.
I feel strongly that whatever the implementation language, Harmony
should use MMTk as the memory manager. Does anyone have a reason not
to, or has it just not been considered ?
I
Unfortunately, I am not allowed to download JikesRVM at this time.
Since I can't download Jikes, I did the next best thing -- a Google
search. As far as I can tell, MMTK is part of JikesRVM and does not
exist as a stand-alone entity. Is this correct?
Also, the following mail archive says that
on the same basis as people are with Classpath -
just proceed as though the license issues will eventually be worked
out ?
Unfortunately, I am not allowed to proceed until the license issues
are worked out.
Regards,
Robin
On Mon, 2005-07-04 at 22:17 -0700, Weldon Washburn wrote
On 7/12/05, Tim Ellison [EMAIL PROTECTED] wrote:
Geir Magnusson Jr. wrote:
On Jul 11, 2005, at 12:14 PM, Tim Ellison wrote:
Recently, within IBM, we have been defining the interface between IBM's
class library and the J9 VM. We deliberately haven't looked at the GNU
Classpath/VM
I'd like to see harmony-dev dig deeper into VM modularization. The VM
has many areas that can benefit from modularization. It seems best to
drill down on a simple interface first and leave the more complicated
interfaces until later. The interface between a loaded class and the
JIT is probably
On 8/18/05, Ricardo Morin [EMAIL PROTECTED] wrote:
Hi,
I updated the Modular Structure JVM Components
section of the architecture document with a
description for each one of the boxes in the UML
diagram, and a brief explanation of notation.
Next step would be to start describing the
On 8/25/05, Davanum Srinivas [EMAIL PROTECTED] wrote:
Weldon,
from which wiki page is this field_access.txt url linked from? could
we not add the code that wiki page itself? (if you enclose with {{{
and }}} with the code in between it looks nice)
Oops. Sorry. I put an http link to
method_access.txt has been added.
On 8/25/05, Weldon Washburn [EMAIL PROTECTED] wrote:
On 8/25/05, Davanum Srinivas [EMAIL PROTECTED] wrote:
Weldon,
from which wiki page is this field_access.txt url linked from? could
we not add the code that wiki page itself? (if you enclose
On 8/28/05, David Tanzer [EMAIL PROTECTED] wrote:
On Sat, 2005-08-27 at 07:15 -0700, Weldon Washburn wrote:
[Snip]
Another suggestion: IMHO it would be good to use the Java Coding
Conventions in C/C++ code too. While this has the disadvantage that
the coding style in the C/C++ code
the existing language spec.
Mladen.
--
Weldon Washburn
Intel Managed Runtime Division
at Rotor code.
-- Weldon
On 7/5/05, David P Grove [EMAIL PROTECTED] wrote:
take a look at the javadoc (http://jikesrvm.sourceforge.net/api/). That
should be mostly harmless from a contamination perspective.
--dave
--
Weldon Washburn
Intel Managed Runtime Division
Everyone,
I just posted the basics of the GC/VM interface to
http://wiki.apache.org/harmony/HarmonyArchitecture. The VM calls into
the GC using gc_interface.txt. The GC calls into the VM using
vm_gc_interface.txt.
Weldon
On 9/23/05, Robin Garner [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
Everyone,
I just posted the basics of the GC/VM interface to
http://wiki.apache.org/harmony/HarmonyArchitecture. The VM calls into
the GC using gc_interface.txt. The GC calls into the VM using
his Bulk
Contrib Agreement and Software Grant in!) we'll put in sandbox and
away we go...
Thanks for the patience
geir
--
Geir Magnusson Jr +1-203-665-6437
[EMAIL PROTECTED]
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Weldon Washburn
Intel Managed Runtime Division
the enties in _jc_ilib_table[ ] would also be decorated with
wrapper.
Thoughts?
Thanks
Weldon
--
Weldon Washburn
Intel Middleware Products Division
wrappers that satisfy all the stakeholders.
- Weldon
On 2/10/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
Because the wrapper is adding a layer of identically named methods and
thus potentially really confusing the name space, I renamed
java_lang_VMClass_isArray
__
Archie Cobbs *CTO, Awarix* http://www.awarix.com
--
Weldon Washburn
Intel Middleware Products Division
these files into source code control until we have a
clear understanding where they need to reside and how we want the
directories arranged.
The README.txt:
Feb 11, 2006
Weldon Washburn, Intel
The code in this tree is very new. It has
on the best approach?
Thanks
--
Weldon Washburn
Intel Middleware Products Division
://www.awarix.com
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Weldon Washburn
Intel Middleware Products Division
On 2/14/06, Tim Ellison [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
Question -- does it make sense to include a stupid, simple
String.intern() in the kernel class to make it even easier and more
convenient for someone trying to graft Harmony Class Libraries to a
new JVM?
Sure, we
to start the debate on how files like Thread.java
should be designed. We should also decide where to put kernel_path.
Meanwhile, I plan to build jchevm and attempt to run hello_world.java
using HCL.
Let me know what you think.
--
Weldon Washburn
Intel Middleware Products Division
f13mr853709pyl;
Wed, 22 Feb 2006 10:51:39 -0800 (PST)
Received: by 10.35.58.1 with HTTP; Wed, 22 Feb 2006 10:51:39 -0800 (PST)
Message-ID: [EMAIL PROTECTED]
Date: Wed, 22 Feb 2006 10:51:39 -0800
From: Weldon Washburn [EMAIL PROTECTED]
To: harmony-dev@incubator.apache.org
Subject: [jchevm] rough draft
Software Development Lab, IBM
Tim Ellison wrote:
Please, don't send attachments to the mailing list.
Attach them to a JIRA.
Regards,
Tim
Weldon Washburn wrote:
Does anyone have suggestions?
Thanks
Weldon
-- Forwarded message --
From: Mail
update jchevm. It shows, At revision 381045. But still no
configure file. I have svn version 1.3.0 installed.
Any suggestions would be welcome.
Thanks
--
Weldon Washburn
Intel Middleware Products Division
' in ZIP file `%s': %s, zent-name,
zip-path, strerror(errno));
--
Weldon Washburn
Intel Middleware Products Division
+
_JC_EX_STORE(env, IOException, error reading entry
`%s' in ZIP file `%s': %s, zent-name,
zip-path, strerror(errno));
--
Weldon Washburn
Intel Middleware Products Division
in the final result.
ciao,
Enrico
--
Weldon Washburn
Intel Middleware Products Division
jcjavah.exe but want to wait to see if someone
else has already done this job.
-- Weldon
On 3/1/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
I tried the pread() patch but I still get:
I just checked in support for systems without pread(2) in r382047.
The patch should
)... yes
checking whether make sets $(MAKE)... (cached) yes
checking for /usr/local/classpath/share/classpath/glibj.zip... yes
checking for a BSD-compatible install... /usr/bin/install -c
.
Weldon Washburn
Intel Middleware Products Division
in the HOWTO document you are writing.
The following configuration allows JCHEVM to run properly under gdb:
$ gdb --args ./jc.exe --classpath=. --bootclasspath=/usr/local/unzipped_glibj
:/usr/local/unzipped_jc:. hello
(gdb) handle SIGSEGV nostop
(gdb) handle SIGSEGV noprint
(gdb) run
--
Weldon
12; qq++) {
System.out.write(ba[qq]);
}
}
}
public void run() {
while(true) {
System.out.write('*');
}
}
}
--
Weldon Washburn
Intel Middleware Products Division
On 3/9/06, Enrico Migliore [EMAIL PROTECTED] wrote:
Hi Weldon,
Well done!
Where did you actually run the test: Cygwin, Linux, or both?
I did all the work on Cygwin. I ran out of time for installing vmware
and linux on my laptop.
Enrico
--
Weldon Washburn
Intel Middleware Products
On 3/9/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
I can now run the below multithread Hello.java on JCHEVM using Apache
Harmony Class Library. The output toggles between clumps of Hello
World and clumps of * as WindowsXP schedules the two application
threads
Archie,
Please take a look at bootstrap.c It would be great if we can do the
final integration in the next 2 days while this code is still fresh in
my mind.
Thanks
Weldon
--
Weldon Washburn
Intel Middleware Products Division
, OSNetworkSystem.java, OSComponentFactory.java
--
Weldon Washburn
Intel Middleware Products Division
On 3/10/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
Please take a look at bootstrap.c It would be great if we can do the
final integration in the next 2 days while this code is still fresh in
my mind.
Looks reasonable, you just commented out or changed the classes
are on your on re: native methods.
Regards,
Tim
Weldon Washburn wrote:
Class Lib developers,
To make porting Harmony Class Lib to non-Harmony JVMs easier, it would
be great if all the java code that declares native methods was in one
place. For the JCEVM port, I added most of the required
into the kernel directory. Another possibility is to leave
the above files where they are and have them call into
kernel/src/main/java/java/lang/kernel_OSMemory.java. The idea is to
move all the native method declarations into the kernel directory.
Thoughts on the above?
--
Weldon Washburn
Intel Middleware
/VMSystem.java
kernel/src/main/java/java/lang/VMThread.java
kernel/src/main/java/java/lang/VMThreadGroup.java
kernel/src/main/java/java/lang/VMThrowable.java
--
Weldon Washburn
Intel Middleware Products Division
On 3/22/06, Leo Simons [EMAIL PROTECTED] wrote:
On Tue, Mar 21, 2006 at 06:01:48PM -0800, Weldon Washburn wrote:
Below is a list of modified kernel files that allow Harmony ClassLib
to run hello world on any JVM that is expecting GNU Classpath.
If that means what I think it means that's
it will be fairly easy to get Harmony
Class Library hello world working on the merged JCHEVM and SableVM.
--
Weldon Washburn
Intel Middleware Products Division
On 3/23/06, Tim Ellison [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
Now that JCHEVM licensing issues are resolved, I would like to find a
home for mods that make Harmony Classlib more portable. The files
are:
nio/src/main/java/com/ibm/platform/OSMemory.java
nio/src/main/java/com
, etc.
Etienne
--
Etienne M. Gagnon, Ph.D.http://www.info2.uqam.ca/~egagnon/
SableVM: http://www.sablevm.org/
SableCC: http://www.sablecc.org/
--
Weldon Washburn
Intel Middleware Products Division
/classlib/trunk/doc/vm_doc/html/group__Port.html#CreatePortLib
Comments are welcome :-)
Enrico
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Weldon Washburn
Intel Middleware Products Division
have been uploaded to JIRA Harmony-318.
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Weldon Washburn
Intel Middleware Products Division
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Hi Tim,
On 4/6/06, Tim Ellison [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
I was able to eliminate almost all mods necessary to run Harmony
Classlib on a GNU Classpath VM. The VM used is still JCHEVM.
Cool -- I'd be very interested to hear about what you are doing.
I tried to give
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Archie,
I have zero problems if you put specific directories contained in JIRA
harmony-318 below harmony/enhanced/gnuclasspathadapter. The specific
directories are:
- kernel
- luni
- nio
I have more mods that I would like to make to this code. How do I do
this once it is svn?
Thanks
is that
different GNU Classpath JVMs may require different name decoration and
different build options. Two ways of handling this are 1) add a
subdirectory for each JVM that contains the code that is unique to the
jvm and 2) use #ifdefs and make file options to handle the
differences.
--
Weldon
Hi Archie,
On 4/12/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
4)
There was real difficulty lining up the native method's incoming
arguments. Finally I declared the native method with input arguments
(int a1, int a2, int a3, int a4). Then passed the character
Archie,
This helps a bunch! I was getting lost in the JCNI code.
Thanks
Weldon
On 4/12/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
There's nothing unusual about JCHEVM's native code dispatch.
However, JCHEVM constructs dynamic function calls itself (instead
at the JIRA it's hard to tell what the attachments are for?
Regards,
Mark.
On 4/12/06, Weldon Washburn [EMAIL PROTECTED] wrote:
I just uploaded a new zip file to JIRA Harmony-318 that contains the
mods to Harmony Classlib that will allow it to run on an unmodified
generic GNU Classpath
/pkgnaming.html
On 4/12/06, Weldon Washburn [EMAIL PROTECTED] wrote:
Mark,
Thanks for working on the diffs. I have tried to get svn to behave.
Version 1.3.0 dated Jan 15 does not recognize the --diff-cmd you
suggest below. It might be a cygwin issue.
Can you check-in just the kernel adapter
Mark,
Sorry I forgot to mention it in the last email. I did the svn diff
you suggested below. The results have been attached to Harmony-318.
On 4/12/06, Mark Hindess [EMAIL PROTECTED] wrote:
Weldon,
Sorry, it was a mistake on my part, it should be:
svn diff --diff-cmd diff -x -ubBw
On 4/12/06, Mark Hindess [EMAIL PROTECTED] wrote:
On 4/12/06, Weldon Washburn [EMAIL PROTECTED] wrote:
On 4/12/06, Mark Hindess [EMAIL PROTECTED] wrote:
1) Copy the luni-kernel and security-kernel stubs and add
implementation rather than doing it in place. The stubs are just
to more closely match Classlib's structure.
4)
The top-level directory is now gnuclasspathadapter.
My nexst steps are:
1)
Get System.out.println() working. (Currently only System.out.write() works)
2)
Compile LUNI native methods then see what happens. (They should
simply just work).
--
Weldon
On 5/1/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
There was an unexpected and surprising parsing problem when running
_209_db on JCHEVM. The procedure called, _jc_parse_classfile(), does
some basic verification of a class file. In specific, it verifies
that a class
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On 5/2/06, Geir Magnusson Jr [EMAIL PROTECTED] wrote:
I believe that this is sufficient. Thanks.
If this is acceptable to others, we should then note this in 114 and
318, and close them both.
geir
Weldon Washburn wrote:
Sorry. Its all my fault. I was distracted by the JIRA user
On 5/3/06, Geir Magnusson Jr [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
Geir,
Two things:
1)
We forgot one more JIRA bug report --- 192. Please also close 192.
Sorry for not catching this earlier
Is there code there that needs to come into SVN.
It looks like Archie took
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FYI -- If you get connection timed out errors when trying to run
build.bat update..., it could be because http.proxyhost and
http.proxyPort are not set correctly.
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Weldon Washburn
Intel Middleware Products Division
-
Terms
implementation on vm needed though.
More tests works when adding in bootclasspath instead of classpath
(system classloader is not quite finished)
Exception traces works and quite useful to find problematic places.
--
Ivan
2006/5/16, Weldon Washburn [EMAIL PROTECTED]:
Ivan,
Good progress. Again
/Character.class for a method called, class$ and can't find
any evidence of it. Does anyone have any suggestions? Could class$
somehow be related to inner classes??
My next step is to use the debugger to watch the class loader load
method class$.
--
Weldon Washburn
Intel Middleware Products Division
PROTECTED] wrote:
Weldon Washburn wrote:
I just now looked at 483. Good work. I'd like to check-in these mods
into svn but don't have check-in permission.
I can check them in, but I think Ivan's code needs official blessing first.
-Archie
grep of the code, it appears that write barriers are only
partially implemented. We will need to make write barriers functional
before many of the features of MMTK can be used. Thoughts?
Weldon
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Intel Middleware Products Division
at its current home. Only mods that support the MMTK interface
would be put in Apache svn repository.
Thanks
Weldon
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Intel Middleware Products Division
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oops. I forgot to cc:
-- Forwarded message --
From: Weldon Washburn [EMAIL PROTECTED]
Date: May 24, 2006 6:43 AM
Subject: Re: [DRLVM] proposal to port MMTK to drlvm
To: [EMAIL PROTECTED]
Daniel,
I really appreciate your offer to help. On the surface, our
backgrounds
oops, I forgot to cc:
-- Forwarded message --
From: Weldon Washburn [EMAIL PROTECTED]
Date: May 24, 2006 11:23 AM
Subject: Re: [DRLVM] proposal to port MMTK to drlvm
To: [EMAIL PROTECTED]
On 5/24/06, Daniel Feinberg [EMAIL PROTECTED] wrote:
that is cool, so the other thing i
,
the contribution GC is not generational. So..I am not sure how this would be
tested etc.
Thanks,
Rana
On 5/23/06, Weldon Washburn [EMAIL PROTECTED] wrote:
Folks,
There were several interesting email chains about Harmony VM and MMTK
last year. This topic died in large part because
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as possible. How about ignoring read barriers until
after initial bring up? Also, those on the mailing list who are
interested in read barriers should feel free to jump in.
Rodrigo
On 5/24/06, Weldon Washburn [EMAIL PROTECTED] wrote:
On 5/24/06, Ivan Volosyuk [EMAIL PROTECTED] wrote:
I have a patch
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for this Java GC Adapter yet?
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.
Thanks,
Dan Lydick
[Original Message]
From: Weldon Washburn [EMAIL PROTECTED]
To: harmony-dev@incubator.apache.org
Date: 5/24/06 1:09:03 AM
Subject: [DRLVM] proposal to port MMTK to drlvm
Folks,
There were several interesting email chains about Harmony VM and MMTK
last year
On 5/22/06, Archie Cobbs [EMAIL PROTECTED] wrote:
Weldon Washburn wrote:
Please hold off the check-in for a few days. I would like to try
Ivan's mods on my machine to make certain they are complete. The
intention is to reduce the chance of secondary patch-up check-ins and
the related
:
Weldon Washburn wrote:
Please hold off the check-in for a few days. I would like to try
Ivan's mods on my machine to make certain they are complete. The
intention is to reduce the chance of secondary patch-up check-ins and
the related blizzard of emails.
No problem.. I'll wait for both
ranges of reference
variables. In specific how root set enumeration works. While not
absolutely essential for hacking in write barriers, it will help a
bunch during the debug stage.
Thanks
--
Weldon Washburn
Intel Middleware Products Division
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Weldon Washburn
Intel Middleware Products Division
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