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How to stop an endless Loop?

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    #1

    How to stop an endless Loop?

    I now we all are very capable programmers and all.. But some (rareee) times "someone" makes a mistake in the code and the script enters an "endless loop" (using: For.. or With..) is there a way to stop the loop besides "killing" Alpha Five task?
    Cheers
    Mauricio

    Tags: None
    #2
    Re: How to stop an endless Loop?

    I've threatened it with my .357 a couple times and even that didn't stop it.

    I don't know of any other way.
    -Steve
    sigpic

    Comment

      #3
      Re: How to stop an endless Loop?

      The View > Settings... > Preferences > Running Scripts setting allows you to set the Enable 'Halt Script' dialog. This setting will interrupt a long running script to ask you if you wish to stop it.
      It works..in theory!

      Comment

        #4
        Re: How to stop an endless Loop?

        Hi Mauricio,

        Originally posted by mmaisterrena View Post
        I now we all are very capable programmers and all.. But some (rareee) times "someone" makes a mistake in the code and the script enters an "endless loop" (using: For.. or With..) is there a way to stop the loop besides "killing" Alpha Five task?
        There are a couple of real ways that can stop script code, depending upon whether it is modal or not, and whether it is at the Xbasic level.

        The Halt Script method can work, but it doesn't always. I suspect it's XBasic stuck vs compiled C code functions being stuck.

        If you are in the debugger, you can just halt the script execution. If you want to stop a loop in operational code, the best way is to add a watchdog timer in Alpha, that closes the thread if it doesn't update a flag regularly. This is difficult code to do for most, and there are some limitations.

        Finally, if you are running the CSDA Code Utility, just do a save desktop before running the code. If it gets stuck and you have to shut down the A5 task, restarting A5 is a snap. Hangs and needing to restart A5 to redefine declares, were the original reason for creating the CSDA Code Utility.
        Regards,

        Ira J. Perlow
        Computer Systems Design


        CSDA A5 Products
        New - Free CSDA DiagInfo - v1.39, 30 Apr 2013
        CSDA Barcode Functions
        CSDA Code Utility
        CSDA Screen Capture

        Comment

          #5
          Re: How to stop an endless Loop?

          Thank you all,

          I have never used the debuger I just open a new script page and start coding, I think Ill give it a try.
          Cheers
          Mauricio

          Comment

            #6
            Re: How to stop an endless Loop?

            There are two types of people that work with Alpha.

            Those who use the debugger and those that should. ;)
            Al Buchholz
            Bookwood Systems, LTD
            Weekly QReportBuilder Webinars Thursday 1 pm CST

            Occam's Razor - KISS
            Normalize till it hurts - De-normalize till it works.
            Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
            When we triage a problem it is much easier to read sample systems than to read a mind.
            "Make it as simple as possible, but not simpler."
            Albert Einstein

            http://www.iadn.com/images/media/iadn_member.png

            Comment

              #7
              Re: How to stop an endless Loop?

              Darn, I always end up on the wrong side of where I should be :)
              Cheers
              Mauricio

              Comment

                #8
                Re: How to stop an endless Loop?

                too bad this option no longer exists!

                Comment

                  #9
                  Re: How to stop an endless Loop?

                  Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake....................................<ctrl>C
                  Win 10 64 Development, Win 7 64 WAS 11-1, 2, Win 10 64 AA-1,2, MySql, dbForge Studio The Best MySQL GUI Tool IMHO. http://www.devart.com/dbforge/mysql/studio/

                  Comment

                    #10
                    Re: How to stop an endless Loop?

                    Steven,
                    What option does not exist??
                    ....Halt Script
                    ....WatchDog Timer
                    ....CSDA Utility
                    ....Debug function
                    ....Task Manager
                    ....????
                    Mike
                    __________________________________________
                    It is only when we forget all our learning that we begin to know.
                    It's not what you look at that matters, it's what you see.
                    Henry David Thoreau
                    __________________________________________



                    Comment

                      #11
                      Re: How to stop an endless Loop?

                      Well,
                      May have guessed what option is missing....The Halt script appears in v5 but not in v8 or above. Apparently either taken out in v6 / v7 or simply is located somewhere else...never worked consistently for me either so never noticed it not being there as v5 was the only version I had ever tried it in!!

                      If this guess is correct, then I have to disagree about it being a bad thing---if it didn't work correctly (for what users wanted it for) why have it?
                      Mike
                      __________________________________________
                      It is only when we forget all our learning that we begin to know.
                      It's not what you look at that matters, it's what you see.
                      Henry David Thoreau
                      __________________________________________



                      Comment

                        #12
                        Re: How to stop an endless Loop?

                        Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake. Personally I have never made this mistake....................................<ctrl>C
                        Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Lol Fatal Error - Index out of range
                        Cheers
                        Mauricio

                        Comment

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