Data synchornization between thread during emit

  • Hi ,

    I have three threads , Main/GUI thread and two worker threads. data flow if from one worker thread to another and then to GU thread for that I am using Slot and Signal mechanism.

    I Can share the data in two ways, either define globally and the use mutex to synchronize OR
    I can pass the arguments in the slot and emit.

    My question is if I pass the arguments ans use queued connection , do these arguments gets copied to local buffer of event queue before getting copied to Slot functions local arguments?
    If not then reentrency can cause issues at senders side.


  • Moderators

    Yes, in case of queued connections parameters passed by value or const reference are copied.

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