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From "Nathan Beyer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5829) [drlvm][kernel][performance] j.l.Class Serializable/Externalizable caching
Date Sun, 25 May 2008 01:29:55 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12599642#action_12599642
] 

Nathan Beyer commented on HARMONY-5829:
---------------------------------------

I'm going to take this issue - I'm applying a variation of Aleksey's third patch.

> [drlvm][kernel][performance] j.l.Class Serializable/Externalizable caching
> --------------------------------------------------------------------------
>
>                 Key: HARMONY-5829
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5829
>             Project: Harmony
>          Issue Type: Sub-task
>          Components: DRLVM
>            Reporter: Aleksey Shipilev
>            Assignee: Nathan Beyer
>         Attachments: vm-kernel-serializable-externalizable-cache-rc1.patch, vm-kernel-serializable-externalizable-cache-rc2.patch,
vm-kernel-serializable-externalizable-cache-rc3.patch
>
>
> Serialization workloads relies on Class.isAssignableFrom(...) when looking up Serializable
and Externalizable properties (that is, implementation of interfaces). For now, DRLVM kernel
classes perform lookups on each invocation. This issue caches the mentioned properties in
Class fields and does not go to native VMClassRegistry for resolution.

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