[vtkusers] Catching VTK exceptions in Java

[Steve Joyce]

Jeff and Mark,

Thanks for the suggestions.
My application code is in Java, but I presume I would have to set up
the exception handlers in C++ and access them using JNI. Is that
correct?

Thanks,
Steve


>>> Jeff Lee <jeff at cdnorthamerica.com> 05/12/2003 17:49:26 >>>
On second thought, mabey it isn't a good thing to have in vtk itself, 
but is more appropriate in your application code.  I was just thinking

of some obscure compiler that vtk supports which doesn't support 
exception-handling.  Mabey that is the reason why things like this
don't 
already exist in vtk.
-Jeff

Jeff Lee wrote:

>
>
> Mark Hünken wrote:
>
>> I haven't tried it myself (yet), but shouldn't it be possible to
catch
>> bad_allocs by setting up your own exception handler?
>>
>> Something like
>> _set_new_handler(MyBadAllocHandler)
>>
>> int MyBadAllocHandler(size_t size)
>> {
>>    throw the appropriate java exception
>>    and prevent VTK from running into memory access violations
>> }
>>
>>  
>>
> Absolutely right, forgot that there are the 4 standard exeptions, 
> bad_alloc, bad_cast, bad_typeid, bad_exception.  We could do
something 
> like this in vtkJavaAwt.h or vtkJavaUtils and propogate them up to 
> java.  The only ones that make any sense to implement would be 
> bad_alloc and bad_exception.  Any comments?  Seems like a good thing

> to have.  I could take a stab at it sometime and post back when its 
> ready,
> -Jeff
>
>> Just an idea, but I would be interesting in any comments anyway.
>>
>> Cheers,
>> Mark
>>
>>
>>  
>>
>
>
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