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From "Wenlong Li (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-6039) On-demand class library parsing to avoid unnecessary jar/zip parsing during VM creation
Date Wed, 14 Jan 2009 14:50:06 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-6039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12663758#action_12663758
] 

Wenlong Li commented on HARMONY-6039:
-------------------------------------

I use full name including path to save the module packaing mapping info, so there is no problem.
For the prepended and appended class path element, I didn't save their mapping info. 

What I try to optimize is the luni path defined in bootclasspath.properties.

> On-demand class library parsing to avoid unnecessary jar/zip parsing during VM creation
> ---------------------------------------------------------------------------------------
>
>                 Key: HARMONY-6039
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6039
>             Project: Harmony
>          Issue Type: Improvement
>          Components: VM
>         Environment: Conduct experiments on Windows XP, Core 2 Quad-core machine
>            Reporter: Wenlong Li
>            Assignee: Xiao-Feng Li
>         Attachments: h6039.patch_1, H6039.patch_2
>
>
> During VM creation, Harmony will parse all class libraried defined in bootclasspath.properties
under jre/lib/boot directory. However, not all class libraries will be used in the lifetime
of java applications. That means, it is not necessary to open and resolve all these class
libraries.
> In this patch, I implement the on-demand jar parsing, which only loads and parses required
jar.

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