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Shareing file based counters between processes

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  • April 1, 2015 at 1:54 pm #54633
    Roland Riepel
    Participant

      Hi all,

      Is there a way to share a file-based counter (the type created and used by the ctr* commands) between threads in different processes?

      Kind regards,

      Roland

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      • April 1, 2015 at 2:12 pm #82331
        James Cobane
        Participant

          Roland,

          Yes.  When you reference the counter, simply give it the full path to the counter file.  i.e.

          CtrNextValue /dirname/myCTR

          Hope this helps.

          Jim Cobane

          Henry Ford Health

        • April 2, 2015 at 3:29 pm #82332
          Russ Ross
          Participant

            James:

            Do you think this will cause contention when both threads make a call to access the shared counter file at the same time?

            Russ Ross
            RussRoss318@gmail.com

          • April 2, 2015 at 5:17 pm #82333
            James Cobane
            Participant

              There could be potential for contention as with any file-based activity.  That consideration should be evaluated as part of Roland’s design.

              Jim Cobane

              Henry Ford Health

            • April 6, 2015 at 2:29 pm #82334
              Rob Abbott
              Keymaster

                If you use the Ctr* commands they have locking built-in.  So contention should not be an issue.

                Rob Abbott
                Cloverleaf Emeritus

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