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From "Gregory Shimansky (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-3074) [drlvm][classloader][jni] When FindClass is called from JNI_OnLoad function it cannot load user application classes
Date Tue, 30 Jan 2007 11:03:33 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-3074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12468569
] 

Gregory Shimansky commented on HARMONY-3074:
--------------------------------------------

VM knows what class loader loads the library, but FindClass doesn't know how it was called.
We can remember ClassLoader somewhere in TLS just to handle this situation (or maybe some
other situations are possible), so in case ClassLoader in TLS is not NULL, it will be used,
otherwise FindClass will find ClassLoader in the conventional way using st_get_frame.

> [drlvm][classloader][jni] When FindClass is called from JNI_OnLoad function it cannot
load user application classes
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-3074
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3074
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Gregory Shimansky
>            Priority: Minor
>         Attachments: JNI_OnLoad Test.zip
>
>
> I've created a program which has a native library and it has JNI_OnLoad function. When
this function tries to load a user application class via FindClass, loading attempt fails.
It looks like it happens because this class is attempted to be loaded with bootstrap class
loader which loads classes only from boot class path. So user class cannot be loaded since
it is not in boot class path.
> RI loads this user class with system application class loader.

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