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Subject: Re: Classloader exception
From: Marcel Offermans <marcel.offermans@luminis.nl>
In-Reply-To: 
 <CAOtESJeB9+YifOkEnNa55roea5vzNqm+TMUo7BxfhSkG14Dd+g@mail.gmail.com>
Date: Wed, 19 Mar 2014 08:59:17 +0100
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Message-Id: <49B21A11-47FD-4381-A537-7CA443AF281E@luminis.nl>
References: 
 <CAOtESJeB9+YifOkEnNa55roea5vzNqm+TMUo7BxfhSkG14Dd+g@mail.gmail.com>
To: "<users@felix.apache.org>" <users@felix.apache.org>

Hello Frizz,

That is exactly why OSGi has a built-in mechanism to load native code, =
to deal with such problems. You say you are loading the DLL yourself, =
but did you look at the specification and its abilities to load native =
code?

If for some reason you really can=92t use the spec for this, I suggest =
you study the implementation of loading native code in the Felix =
framework (which shows you what tricks to play) but to be honest, I =
would not go there but leverage what is already present.

Greetings, Marcel


On 19 Mar 2014, at 4:32 , Frizz <frizzthecat@googlemail.com> wrote:

> Hi all,
>=20
> I load a DLL using JNI. Because I'm still in development phase, I use
> "dev:watch" to automatically update my bundle in the container.
>=20
> I understood that this results in an exception: "UnsatisfiedLinkError:
> Native Library xyz already loaded in another classloader" - because =
the DLL
> is already loaded by the JVM.
>=20
> I also understood that only after the classloader that loaded the DLL =
is
> garbage collected, the DLL is unloaded.
>=20
> So I uninstalled the bundle - yet I still get the UnsatisfiedLinkError
> exception. Which means the classloader is still alive.
>=20
> Shouldn't the bundles classloader be gone once I uninstalled the =
bundle?
>=20
> cheers,
> Frizz


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