OpenEuphoria

Re: BREAKing into Euphoria

• Posted by Robert Craig <rds at Ra?idEu?horia.com> Sep 12, 2007
• 2601 views

Pete Lomax wrote:
> Robert Craig wrote:
> > Pete Lomax wrote:
> > > 
> > > I got some "interesting" results (random crashes mainly) from this,
> > > however
> > > enough of it works to show that something is possible (comments, Rob?):
> > > Maybe there is a generic problem with trace in call_back routines??
> > 
> > Possibly. I'm not sure.
> 
> I guess SetConsoleCtrlHandler is invoking the Eu code I posted much like OS
> threads, so if it is not thread-safe then random crashes will occur. Hence any
> such code would have to be in the back end rather than Eu code, unless
> something
> can be done along the lines of task_yield().

If you break out of the interpreter at a random point,
and then re-enter the interpreter, there could be problems.
It might have been in the middle of some sensitive operation
that was not completed properly.

Multitasking in Euphoria only uses one O/S thread,
and a task switch only happens at a task_yield()
so everything is safe.

Regards,
   Rob Craig
   Rapid Deployment Software
   http://www.RapidEuphoria.com