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From "Nathan Beyer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5882) [classlib][pack200] Performance improvements for pack200
Date Wed, 25 Jun 2008 01:56:45 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12607837#action_12607837
] 

Nathan Beyer commented on HARMONY-5882:
---------------------------------------

In case it's not clear, the reason you have to use UTF-8 ("modified utf" in this case); the
class file format dictates it - http://java.sun.com/docs/books/jvms/second_edition/html/ClassFile.doc.html

> [classlib][pack200] Performance improvements for pack200
> --------------------------------------------------------
>
>                 Key: HARMONY-5882
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5882
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>    Affects Versions: 5.0M6
>         Environment: Pack200 HEAD
>            Reporter: Andrew Cornwall
>            Assignee: Sian January
>         Attachments: Lexer.class, main.updated.patch, test.updated.patch
>
>
> Attached are some performance improvements for Pack200. They do two things:
>  1. Remove unnecessary conversions to UTF-8 in CPUTF8
>  2. Cache array lookup in SegmentConstantPool
> Hope they work - this is my first try at applying a fix since I've forked.

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