Mailing-List: contact harmony-commits-help@incubator.apache.org; run by ezmlm
Precedence: bulk
Reply-To: harmony-dev@incubator.apache.org
Message-ID: <27111910.1158064646366.JavaMail.jira@brutus>
Date: Tue, 12 Sep 2006 05:37:26 -0700 (PDT)
From: "weldon washburn (JIRA)" <jira@apache.org>
To: harmony-commits@incubator.apache.org
Subject: [jira] Assigned: (HARMONY-1428) [DRLVM] first batch of files for
 GCv5, a trace-forward copying collector
In-Reply-To: <13731220.1157988022467.JavaMail.jira@brutus>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit

     [ http://issues.apache.org/jira/browse/HARMONY-1428?page=all ]

weldon washburn reassigned HARMONY-1428:
----------------------------------------

    Assignee: weldon washburn

> [DRLVM] first batch of files for GCv5, a trace-forward copying collector
> ------------------------------------------------------------------------
>
>                 Key: HARMONY-1428
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1428
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>         Environment: These files were only tested on Windows with VS.NET 2003.  
>            Reporter: Xiao-Feng Li
>         Assigned To: weldon washburn
>         Attachments: gc_v5.001.zip
>
>
> This archive has a couple of files implementing an early version of a trace-forward copying collector for GCv5. It's only a starter with very basic functionalities. It is a generational GC reqiures write barrier implemented in JIT. It was tested with JET, and ran SPECJBB2000 and SPECJVM98.
> The algorithm is depth-first tracing of From-space, and forwarding live objects to To-space (It can forward part of the From-space). The To-space has no real management except for the accomodation of forwarded objects and large objects. So the To-space is going to be replaced by a mark-compaction GC, and the large objects will be managed by a LOS GC. 
> In order to minimize the changes to other components of DRLVM, the codes here comply with the original contract between GCv4 and other components. I also borrowed some routine code from GCv4 to avoid repetitive labor work.
> GCv5 is under active development, so please expect quick and big changes to this submitted code base. I will submit new codes from time to time when they are worth a submission. Any comments or codes are more than welcome. 

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira