Table Of Contents

Lossy Enqueue Element (G Dataflow)

Version:
Last Modified: September 13, 2017

Adds an element to the back of a queue. Unlike Enqueue Element, this node does not wait for space in the queue to become available. If no space is available in the queue, this node discards an element from the front of the queue to make space.

Programming Patterns

Use Obtain Queue to set the maximum size of the queue.

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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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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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overflow element

The element that this node removed from the front of the queue if the queue was full.

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overflow?

A Boolean value that indicates whether the queue was full and this node had to make space for the element.

True The queue was full and this node removed an element to create space.
False The queue accepted the element and did not remove an element to make space.
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error out

Error information.

The node produces this output 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.

Where This Node Can Run:

Desktop OS: Windows

FPGA: This product does not support FPGA devices

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


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