Do I need a semaphore to control adding elements to a queue?

[jorgewpi]

Hello,

I am developing a GUI which has several sub-GUIs running concurrently.  I would like to be able to have all GUIs record to the same log file.  To do this I am considering using a queue so that each sub-gui can queue log messages while one VI will record them to the log file as they are received.  Will I be able to enqueue messages from various sources without using a semaphore?  (Will something bad happen if two VIs try to write to enqueue an element at the same time)?

Thanks!

Jorge

[JB]

There is no need to use a semaphore or any other technique to protect the access to the Enqueue Element function.

[jorgewpi]

Thanks!

[Ray.R]

Also remember that elements are typically dequeued in the order they were entered into the queue.  Not from where it was entered.

It is usually a FIFO.  It doesn't matter which sub-vi or loop it came from.

RayR