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From "Dyre Tjeldvoll (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-2050) Manipulating CachedItems could be more efficient
Date Wed, 08 Nov 2006 16:10:51 GMT
     [ http://issues.apache.org/jira/browse/DERBY-2050?page=all ]

Dyre Tjeldvoll updated DERBY-2050:
----------------------------------

    Attachment: derby-2050.v2.diff

New patch which 
- restores the deleted comment
- removes unintended white space changes
- restores the deleted final keywords

Deletion was not intentional. I wanted to remove the final keywords that I had added myself,
and did not notice that I removed some of the existing ones. I decided to remove the final
keywords I which I had added since I noticed that the class itself was declared final. Is
there some added benefit to declaring methods in a final class as final?

> Manipulating CachedItems could be more efficient
> ------------------------------------------------
>
>                 Key: DERBY-2050
>                 URL: http://issues.apache.org/jira/browse/DERBY-2050
>             Project: Derby
>          Issue Type: Improvement
>          Components: Performance
>    Affects Versions: 10.2.1.6
>            Reporter: Dyre Tjeldvoll
>            Priority: Trivial
>             Fix For: 10.3.0.0
>
>         Attachments: derby-2050.diff, derby-2050.stat, derby-2050.v2.diff
>
>
> CachedItem's state is currently recorded in bit fields of an integer variable. Changing
this to 6 boolean member variables reduces cpu usage. 

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