SDL in dll - program crashes

SDL Development
1

Hi all,
I put a part of my code, which contains creation of window an utilization of screen (in SDL) in to a dll file, but problem is that program, which uses this dll crashes in it’s end, even that exact code used in this dll worked outside of dll perfectly.

I tryed to find where exactly program crashes and I found that it is right after calling SDL_Quit(); So I took a look in to SDL specification and I found a note, that there could be some problems with calling atexit(); and SDL_Quit(); outside dynamic library…but when I removed calling of these functions from my dll, program crashed with same error message (close to the end of the application, I suppose on automatic freeing of sdl).

I am completly feckless, I searched this problem on google and other forums, I found some posts with same problem, like this http://twomix.devolution.com/pipermail/sdl/2004-April/061325.html, but no usefull answers :frowning:

P.S.: I tryed to call SDL_INIT_NOPARACHUTE in SDL_Init() but it didn?t help.

                                                                                                                                        Michal Rost
2

From what I remember, the whole atexit() and related stuff is a real
pain with DLL boundies. I’d reorganize my code like so:

cleanup_exe.c :

void cleanup_exe( void )
{
//everything in the exe source that you’d normaly atexit()
cleanup_dll();
}

cleanup_dll.c :

void cleanup_dll( void )
{
//eveything in the dll source that you’d normally atexit()
}

main.c :

int main ( void )
{
atexit( cleanup_exe );
}

Which IIRC should fix it.

Michal Rost wrote:> Hi all,

I put a part of my code, which contains creation of window an
utilization of screen (in SDL) in to a dll file, but problem is that
program, which uses this dll crashes in it’s end, even that exact code
used in this dll worked outside of dll perfectly.

I tryed to find where exactly program crashes and I found that it is
right after calling SDL_Quit(); So I took a look in to SDL specification
and I found a note, that there could be some problems with calling
atexit(); and SDL_Quit(); outside dynamic library…but when I removed
calling of these functions from my dll, program crashed with same error
message (close to the end of the application, I suppose on automatic
freeing of sdl).

I am completly feckless, I searched this problem on google and other
forums, I found some posts with same problem, like this
http://twomix.devolution.com/pipermail/sdl/2004-April/061325.html, but
no usefull answers :frowning:

P.S.: I tryed to call SDL_INIT_NOPARACHUTE in SDL_Init() but it didn?t
help.

Michal Rost

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