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From "Kevin Zhou (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-6045) [classlib] [luni] Optimize java.lang.String.toUpperCase(), String.toLowerCase() and String sharing for more performance gains
Date Tue, 21 Apr 2009 02:34:47 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-6045?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kevin Zhou updated HARMONY-6045:
--------------------------------

    Attachment:     (was: HARMONY-6045v2.diff)

> [classlib] [luni] Optimize java.lang.String.toUpperCase(), String.toLowerCase() and String
sharing for more performance gains
> -----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-6045
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6045
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>    Affects Versions: 5.0M8
>            Reporter: Kevin Zhou
>             Fix For: 5.0M9
>
>         Attachments: HARMONY-6045.diff, StringConvertCase.java
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> Recently, I make some improvement on java.lang.String and java.lang.AbstractStringBuilder
class for more performance gains. 
> 1. Move the share mode for all the AbstractStringBuilder.append method, since the append
never change the share things.
> 2. Move the share mode in AbstractStringBuilder.setLength method
> 3. Add the special care for the ASCII things, especially on case things of String.toUpperCase
and to LowerCase methods.

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