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Posted to commits@harmony.apache.org by "Chunrong Lai (JIRA)" <ji...@apache.org> on 2008/02/21 08:40:43 UTC
[jira] Created: (HARMONY-5539) [drlvm][vmcore] Updated
class-unloading with less weak roots
[drlvm][vmcore] Updated class-unloading with less weak roots
------------------------------------------------------------
Key: HARMONY-5539
URL: https://issues.apache.org/jira/browse/HARMONY-5539
Project: Harmony
Issue Type: Improvement
Components: DRLVM
Environment: Any
Reporter: Chunrong Lai
Current class unloading implementation uses weak roots to communicate with VM <-> GC which introduce space penalty and copying overhead, as discussed in HARMONY-4477.
Attached patch reduces the weak roots with an extra loop in VM to update the pointers.
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[jira] Updated: (HARMONY-5539) [drlvm][vmcore] Updated
class-unloading with less weak roots
Posted by "Chunrong Lai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-5539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chunrong Lai updated HARMONY-5539:
----------------------------------
Attachment: cu.reducedweakroots.patch
Here is the patch. Please verify.
> [drlvm][vmcore] Updated class-unloading with less weak roots
> ------------------------------------------------------------
>
> Key: HARMONY-5539
> URL: https://issues.apache.org/jira/browse/HARMONY-5539
> Project: Harmony
> Issue Type: Improvement
> Components: DRLVM
> Environment: Any
> Reporter: Chunrong Lai
> Attachments: cu.reducedweakroots.patch
>
> Original Estimate: 0.33h
> Remaining Estimate: 0.33h
>
> Current class unloading implementation uses weak roots to communicate with VM <-> GC which introduce space penalty and copying overhead, as discussed in HARMONY-4477.
> Attached patch reduces the weak roots with an extra loop in VM to update the pointers.
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[jira] Assigned: (HARMONY-5539) [drlvm][vmcore] Updated
class-unloading with less weak roots
Posted by "Pavel Pervov (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-5539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Pavel Pervov reassigned HARMONY-5539:
-------------------------------------
Assignee: Pavel Pervov
> [drlvm][vmcore] Updated class-unloading with less weak roots
> ------------------------------------------------------------
>
> Key: HARMONY-5539
> URL: https://issues.apache.org/jira/browse/HARMONY-5539
> Project: Harmony
> Issue Type: Improvement
> Components: DRLVM
> Environment: Any
> Reporter: Chunrong Lai
> Assignee: Pavel Pervov
> Attachments: cu.reducedweakroots.patch
>
> Original Estimate: 0.33h
> Remaining Estimate: 0.33h
>
> Current class unloading implementation uses weak roots to communicate with VM <-> GC which introduce space penalty and copying overhead, as discussed in HARMONY-4477.
> Attached patch reduces the weak roots with an extra loop in VM to update the pointers.
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[jira] Commented: (HARMONY-5539) [drlvm][vmcore] Updated
class-unloading with less weak roots
Posted by "Pavel Pervov (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-5539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12574500#action_12574500 ]
Pavel Pervov commented on HARMONY-5539:
---------------------------------------
Chunrong,
it's neat tweak to update vtable roots after GC. Patch is ok.
> [drlvm][vmcore] Updated class-unloading with less weak roots
> ------------------------------------------------------------
>
> Key: HARMONY-5539
> URL: https://issues.apache.org/jira/browse/HARMONY-5539
> Project: Harmony
> Issue Type: Improvement
> Components: DRLVM
> Environment: Any
> Reporter: Chunrong Lai
> Attachments: cu.reducedweakroots.patch
>
> Original Estimate: 0.33h
> Remaining Estimate: 0.33h
>
> Current class unloading implementation uses weak roots to communicate with VM <-> GC which introduce space penalty and copying overhead, as discussed in HARMONY-4477.
> Attached patch reduces the weak roots with an extra loop in VM to update the pointers.
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[jira] Resolved: (HARMONY-5539) [drlvm][vmcore] Updated
class-unloading with less weak roots
Posted by "Pavel Pervov (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-5539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Pavel Pervov resolved HARMONY-5539.
-----------------------------------
Resolution: Fixed
Committed revision 641167. Chunrong, please, check that patch is applied as expected.
> [drlvm][vmcore] Updated class-unloading with less weak roots
> ------------------------------------------------------------
>
> Key: HARMONY-5539
> URL: https://issues.apache.org/jira/browse/HARMONY-5539
> Project: Harmony
> Issue Type: Improvement
> Components: DRLVM
> Environment: Any
> Reporter: Chunrong Lai
> Assignee: Pavel Pervov
> Attachments: cu.reducedweakroots.patch
>
> Original Estimate: 0.33h
> Remaining Estimate: 0.33h
>
> Current class unloading implementation uses weak roots to communicate with VM <-> GC which introduce space penalty and copying overhead, as discussed in HARMONY-4477.
> Attached patch reduces the weak roots with an extra loop in VM to update the pointers.
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