Re: [IronPython] Is it possible to set a maximum loop size for scripts?
In the general case this isn't possible: http://en.wikipedia.org/wiki/Halting_problem Perhaps some sort of timeout logic would work for you? I.e. kill the script if it is still running after some predetermined amount of time. I do not know if IronPython has any such functionality built in, but it should be easy enough to roll your own. On 4/18/09, theoobe omgomg...@f2s.com wrote: I have a C# application with IronPython scripting. I wonder, is it possible to prevent users from creating infinite loops in their scripts? So for example, if a script is executed which contains a loop, and loop is infinate, would it be possible for my C# application to detect this, perhaps by having a maximum loop cycle count? Thus preventing my application from hanging... I've tried googling around on this subject but I've had no joy. Maybe what I'm asking for isn't possible? Thanks alot! -- View this message in context: http://www.nabble.com/Is-it-possible-to-set-a-maximum-loop-size-for-scripts--tp23084739p23084739.html Sent from the IronPython mailing list archive at Nabble.com. ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] Is it possible to set a maximum loop size for scripts?
Alex News wrote: In the general case this isn't possible: http://en.wikipedia.org/wiki/Halting_problem Well it's not strictly a halting problem. The question isn't whether it will *ever* terminate but just is it taking too long. IronPython doesn't include this functionality built in but it would be *possible* (theoretically) to count loops. I don't think it is a very useful approach though - a very tight loop can execute thousands of times in a second. Perhaps some sort of timeout logic would work for you? I.e. kill the script if it is still running after some predetermined amount of time. I do not know if IronPython has any such functionality built in, but it should be easy enough to roll your own. I agree - spin the code up in its own thread and kill it if it doesn't end within a preset maximum time. Michael On 4/18/09, theoobe omgomg...@f2s.com wrote: I have a C# application with IronPython scripting. I wonder, is it possible to prevent users from creating infinite loops in their scripts? So for example, if a script is executed which contains a loop, and loop is infinate, would it be possible for my C# application to detect this, perhaps by having a maximum loop cycle count? Thus preventing my application from hanging... I've tried googling around on this subject but I've had no joy. Maybe what I'm asking for isn't possible? Thanks alot! -- View this message in context: http://www.nabble.com/Is-it-possible-to-set-a-maximum-loop-size-for-scripts--tp23084739p23084739.html Sent from the IronPython mailing list archive at Nabble.com. ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com -- http://www.ironpythoninaction.com/ http://www.voidspace.org.uk/blog ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
