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Date: Tue, 17 Oct 2006 20:17:35 -0700 (PDT)
From: "Yu-Nan He (JIRA)" <jira@apache.org>
To: harmony-commits@incubator.apache.org
Subject: [jira] Created: (HARMONY-1898) write barrier for C/C++ based GCs in
 Jitrino.OPT
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write barrier for C/C++ based GCs in Jitrino.OPT
------------------------------------------------

                 Key: HARMONY-1898
                 URL: http://issues.apache.org/jira/browse/HARMONY-1898
             Project: Harmony
          Issue Type: Improvement
          Components: DRLVM
         Environment: Windows and Linux, IA32
            Reporter: Yu-Nan He
         Attachments: WB4C_OPT.patch

Attached patch is an implementation of write barrier for C/C++ based GCs in Jitrino.OPT. The patch lets OPT to call "gc_requires_barriers()" of GC to determine if it needs to insert the write barrier code into the jitted code, so it doesn't impact current DRLVM/GC at all.  It calls gc_heap_slot_write_ref( ) of GC module.

To Apply this patch, please enter vm/ directory and patch it. You can pass '-Xem:opt' to EM to use the OPT-only mode. In any other modes, you should be sure to open the JET write barrier for C/C++ based GCs .

This patch is based on revision 465123.

Please review this patch and see if it's ready for commission. Thanks. We hope it can be committed to Harmony soon.


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