ctrl+c and destructors

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On Monday, 30 September 2013 at 01:48:09 UTC, Adam D. Ruppe wrote:
> Is there anything we can do to automatically clean up if the 
> user hits ctrl+c on Linux?
>
> I just had my system get messed up because I was allocating 
> shared memory with the X server, which was released in the 
> destructor... but that never got called because I killed the 
> program with ctrl+c. Then the system ran out of shm handles and 
> I had to clean that up before i could start a bunch of programs 
> again.
>
> Of course, a possible solution is to set up a signal handler in 
> my own program, but even with that, tracking all the dtors that 
> need to actually be called sounds difficult, especially as the 
> program gets more involved.
>
>
> Is it possible to either:
>
> 1) make ctrl+c throw an exception so destructor cleanup happens 
> normally
>
> or
>
> 2) call all the destructors and kill the program from inside a 
> signal handler without throwing a normal exception; it doesn't 
> matter to me that it is unrecoverable, I just need these 
> handles cleaned up.
>
>
> My backup plan is to just ignore the ctrl+c signal, or maybe 
> set a flag in my event loop and terminate the program that way.
There is a similar thread on this topic. Maybe he can help you, 
especially the last post:
http://forum.dlang.org/thread/crviwhvbfruxfnwawirs@forum.dlang.org