Thread synchronization

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  • Giulio Petrucci
    #1

    Thread synchronization

    Hi there,

    I have two threads:
    - thread A: write some data into a stream (audio on an audio card,...etc...)
    - thread B: listen for an event (mouse click,...)
    I need to stop A when the event B's listening to occures.

    Please, could anyone help me?

    Thanks in advance,
    Giulio - Italia
    Tags: None
    • PokerMan
      #2
      Re: Thread synchronization

      Maybe i have misunderstood, but i presume an event fires that tells Thread B
      to start? And you want Thread A to stop when thread B starts? So stop Thread
      A when the event that triggers B to start fires? have i misunderstood you
      here?

      Also if they will not run simulatenously, why the need to run them on
      separate threads in the first place?

      "Giulio Petrucci" <fakename@faked omain.comwrote in message
      news:eyIST0yXHH A.4868@TK2MSFTN GP03.phx.gbl...
      Hi there,
      >
      I have two threads:
      - thread A: write some data into a stream (audio on an audio
      card,...etc...)
      - thread B: listen for an event (mouse click,...)
      I need to stop A when the event B's listening to occures.
      >
      Please, could anyone help me?
      >
      Thanks in advance,
      Giulio - Italia

        Comment

        • Bruce Wood
          #3
          Re: Thread synchronization

          On Mar 5, 5:49 am, Giulio Petrucci <faken...@faked omain.comwrote:
          Hi there,
          >
          I have two threads:
          - thread A: write some data into a stream (audio on an audio card,...etc...)
          - thread B: listen for an event (mouse click,...)
          I need to stop A when the event B's listening to occures.
          Have B's event listener set a boolean flag in the object that contains
          the code for A. Then have A poll (test) the flag at regular intervals,
          say before each write.

          If A finds that the flag is true, then it should abort.

            Comment

            • Giulio Petrucci
              #4
              Re: Thread synchronization

              Hi PokerMan,

              PokerMan ha scritto:
              Maybe i have misunderstood, but i presume an event fires that tells Thread B
              to start?
              Maybe. ;-)
              Also if they will not run simulatenously, why the need to run them on
              separate threads in the first place?
              Because they're using currently two different HW resources.

              Bye,
              Giulio

              --

                Comment

                • Giulio Petrucci
                  #5
                  Re: Thread synchronization

                  Hi Bruce,

                  Bruce Wood ha scritto:
                  Have B's event listener set a boolean flag in the object that contains
                  the code for A. Then have A poll (test) the flag at regular intervals,
                  say before each write.
                  I see.
                  So the only way is to use a buffer for writing data.

                  Thanks for your suggestion!
                  Giulio - Italia

                  --
                  OnAir: nothing but the bus passing in the street

                    Comment

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