Re: Error after calling quantlib-c++-dll via swig-c#-interface

On Mon, 2008-05-05 at 21:09 +0200, Frank Hövermann wrote:
> I think this is a matter of unproper garbage collection or something similar
> but I need some guru advice: A properly coded function (in C++, some double*
> serve as input, and a .txt or .csv file is the output but the function call
> is like "void func_name(double *input, char *path)" so nothing is actually
> returned) which does some calculations using some QuantLib objects somehow
> changes its behaviour under /clr compiler option. This I need to be able to
> use it via SWIG under C#. Calculations are done as supposed to, but upon C#
> program termination an "unknown software exception" (0xc0020001) at
> 0x7c81eb33 pops up. I googled a bit and indications point to a too quick
> (unmanaged) object disposal where the program terminates before the C++
> object does. Does this sound familiar to one of you? Are there any hints to
> prevent this?

Hi Frank,
	unfortunately, I'm not an expert at all in managed C++/C#---my only
exposure to C# has been to compile the SWIG wrappers before release to
check that they work...  Did you try asking on the SWIG mailing list? It
doesn't seem a SWIG problem (since all you're exporting is a function
taking some basic types---no class instances are passing through the
wrapping layer) but there might be people there with more expertise.

Luigi

--

-- 

Dealing with failure is easy: work hard to improve. Success is also 
easy to handle: you've solved the wrong problem. Work hard to improve. 
-- Alan Perlis