Re: [Boost-users] C# application crashes due exception in exception_ptr.hpp

Subject: Re: [Boost-users] C# application crashes due exception in exception_ptr.hpp
From: Damien (damien_at_[hidden])
Date: 2015-06-12 11:15:53

On 2015-06-12 1:09 AM, Markus Pieper wrote:
> Hi there,
>
> I´m new to boost so this might be a silly question.
>
> We have a simulation that is written in C++ and compiled as a static lib.
> It uses a few boost (v1.56) functions like thread.
>
> My job is to create a WPF GUI, that uses this lib. For that, I created a
> C++ CLR DLL which interacts as a wrapper between .NET GUI and the unmanaged
> libs.
>
> Everything works fine but closing my program results in a crash. This crash
> is described here: http://stackoverflow.com/questions/8144630/mixed-mode-c-
> cli-dll-throws-exception-on-exit
> And someone replied, that the reason for this lies in the exception_ptr.hpp
> beacause a "static exception_ptr ep" is being used instead
> of "exception_ptr ep".
> When I delete the static attribute, my program ends normally without the
> crash.
>
> My understanding of C++ is not that big, so I can´t say why it crashes
> here. But the boost programmers have a reason to do so.
>
> I also followed These advices
> (http://thread.gmane.org/gmane.comp.lib.boost.user/44515) but with no
> further luck.
>
> Best regards,
> Markus
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I'd like to make a suggestion based on experience.  I've had to do 
exactly what you're describing and build a WPF UI on a C++ simulation 
application.  Use .Net's System.Runtime.InteropServices with DllImport 
and wrap your C++ lib in a plain C DLL.  It doesn't take as long as you 
might think but it is more work.  You'll have better separation of 
responsibilities and it doesn't prevent the use of Boost.

Damien