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From "Marcel Offermans (JIRA)" <j...@apache.org>
Subject [jira] Commented: (FELIX-439) Improve native code loading
Date Tue, 18 Dec 2007 23:07:43 GMT

    [ https://issues.apache.org/jira/browse/FELIX-439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12552923
] 

Marcel Offermans commented on FELIX-439:
----------------------------------------

about 3)

If you look at the implementation for ClassLoader.loadLibrary() on the Mac, you see it first
asks the classloader of the class that loads the library, and then tries to use the system
and user library paths, iterating over them in turn. The interesting thing is that it first
uses System.mapLibrary() as Karl explains to create the mapping from logical to physical name
(ie: foo -> libfoo.jnilib) and then "hardcoded" assumes the extension is .jnilib and if
that file cannot be found, replaces the extension with .dylib (using replaceFirst() which
does not really work well if there are multiple substrings called .jnilib, but that's another
matter). At least we can improve by emulating this behaviour in its intended way.

> Improve native code loading
> ---------------------------
>
>                 Key: FELIX-439
>                 URL: https://issues.apache.org/jira/browse/FELIX-439
>             Project: Felix
>          Issue Type: Bug
>          Components: Framework
>            Reporter: Karl Pauls
>            Assignee: Karl Pauls
>
> We need to improve native code loading in three areas:
> 1) bundle installation should fail in case a native library is not in the jar but in
the header clause that is selected for the current platform.
> 2) we should only use the first library we find of a given name.
> 3) on MacOSX there are two extensions accepted by java namely, .jnilib and .dylib but
System.mapLibrary() returns only the .jnilib extension.

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