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Table Of Contents

Enqueue Element (G Dataflow)

Last Modified: January 12, 2018

Adds an element to the back of a queue.

If the queue becomes invalid because the queue reference is released, then this node stops waiting and returns an error.

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queue

A reference to a queue.

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element

The element you want to add to the back of the queue.

The data type of this input changes to match the data type of the elements in the queue.

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timeout in milliseconds

The number of milliseconds that the node waits for available space in the queue if the queue is full.

If space becomes available in the queue during the wait, the node inserts the element and does not time out.
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Note  

This node waits if a maximum size has been set for the queue and the queue is full. Use Obtain Queue to set the maximum size of the queue.

Default: -1 — The node never times out.

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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queue out

Reference to the queue.

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timed out?

A Boolean value that indicates whether there is space available in the queue before the node times out or an error occurs.

True There was no space available in the queue before the node timed out, or this node generated an error.
False There was space available in the queue before the node timed out, or an error occurred before this node executed.
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error out

The node produces this output according to standard error behavior.

This node can return the following error codes.

1122 The reference became invalid while the node was waiting for it.
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Note  

This is not a comprehensive list of errors this node can return.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Supported in VIs that run in a web application


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