Re: [Ikvm-developers] RXTX already loaded in another classloader

[Jim R. <jr...@er...>]

Jeroen,

This seems to highlight another difference.  On Debian/ARM I have 1.9.1, 
on FC8 1.2.6, which doesn't seem to support the app.config - or I'm 
doing it wrong.

Here's the Debian output:

Serial Port Name "/dev/ttyUSB0"
[07:29:07.27525 main] loadLibrary: /home/MIX_CMIX/librxtxSerial.so, 
class loader: null
[07:29:07.50823 main] Library loaded: /home/MIX_CMIX/librxtxSerial.so, 
handle = 0x48D730
[07:29:07.51389 main] Calling JNI_OnLoad on: /home/MIX_CMIX/librxtxSerial.so
Experimental:  JNI_OnLoad called.
[07:29:08.11223 main] JNI_OnLoad returned: 0x00010002
[07:29:08.14348 main] loadLibrary: /home/MIX_CMIX/librxtxSerial.so, 
class loader: ikvm.runtime.AssemblyClassLoader@BE18F840
[07:29:08.15330 main] UnsatisfiedLinkError: Native library 
/home/MIX_CMIX/librxtxSerial.so already loaded in another classloader
java.lang.UnsatisfiedLinkError: Native library 
/home/MIX_CMIX/librxtxSerial.so already loaded in another classloader 
thrown while loading gnu.io.RXTXCommDriver
[07:29:08.44410 main] loadLibrary: /home/MIX_CMIX/librxtxSerial.so, 
class loader: ikvm.runtime.AssemblyClassLoader@BE18F840
[07:29:08.44761 main] UnsatisfiedLinkError: Native library 
/home/MIX_CMIX/librxtxSerial.so already loaded in another classloader

Unhandled Exception: System.TypeInitializationException: An exception 
was thrown by the type initializer for gnu.io.CommPortIdentifier ---> 
java.lang.UnsatisfiedLinkError: Native library 
/home/MIX_CMIX/librxtxSerial.so already loaded in another classloader--- 
End of inner exception stack trace ---

   at com.ergotech.vib.ports.SerialWrapper.setPort (Int32 ) [0x00000]

This doesn't mean much to me.  Any thoughts?

Jim

Jeroen Frijters wrote:
> This could be caused by a stack walking difference in Mono on ARM.
> 
> You can get more detailed information if you enable the JNI diagnostics switch in your app.config:
> 
> <?xml version="1.0"?>
> <configuration>
> <system.diagnostics>
>    <switches>
>       <add name="jni" value="4" />
>    </switches>
> </system.diagnostics>
> </configuration>
> 
> Regards,
> Jeroen
> 
>> -----Original Message-----
>> From: ikv...@li... [mailto:ikvm-
>> dev...@li...] On Behalf Of Jim Redman
>> Sent: Friday, May 23, 2008 04:23
>> To: ikv...@li...
>> Subject: [Ikvm-developers] RXTX already loaded in another classloader
>>
>> I've been fighting with this for a while and made no progress,
>> suggestions would be appreciated.
>>
>> This is code all works on FC8, on Debian/ARM I get the following error
>> while trying to load the RXTX package.
>>
>> Experimental:  JNI_OnLoad called.  <<< this is the library loading
>> java.lang.UnsatisfiedLinkError: Native library ./librxtxSerial.so
>> already loaded in another classloader thrown while loading
>> gnu.io.RXTXCommDriver
>>
>> Unhandled Exception: System.TypeInitializationException: An exception
>> was thrown by the type initializer for gnu.io.CommPortIdentifier --->
>> java.lang.UnsatisfiedLinkError: Native library ./librxtxSerial.so
>> already loaded in another classloader--- End of inner exception stack
>> trace ---
>>
>>    at com.ergotech.vib.ports.SerialWrapper.setPort (Int32 ) [0x00000]
>>
>>
>> Thanks,
>>
>> Jim
>>
>> --
>> Jim Redman
>> (505) 662 5156 x85
>> http://www.ergotech.com
>>
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-- 
Jim Redman
(505) 662 5156 x85
http://www.ergotech.com