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Release Notifier (G Dataflow)

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Last Modified: August 7, 2018

Releases a reference to a notifier from memory.

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notifier

A reference to a notifier.

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force destroy

A Boolean that determines whether this node releases all references to the notifier.

Releasing all references to a notifier destroys the queue, which deletes any notifications in the notifier and invalidates all references to the notifier.
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Note  

You can also destroy a notifier by stopping all VIs that use the notifier reference.

True The node releases all references to the notifier.
False The node only releases the specified reference to the notifier. This does not destroy the notifier unless a reference to the notifier has only been obtained once.

Default: False

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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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notifier name

The name of the notifier wired to notifier. If the notifier is not named, this is an empty string.

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last notification

The last non-canceled notification sent to the notifier.

The data type of this output changes to match the data type of the notifier. If no notification is available, the node returns the default value for the element data type you wired in Obtain Notifier.

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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.

Releasing Multiple References to the Same Notifier

If you obtain a reference to the same notifier multiple times, you can release multiple references to that notifier by calling Release Notifier up to the same number of times that you obtained the reference. Releasing all references to a notifier destroys the notifier and deletes any notifications in the notifier.

If you are not using a loop to release references as they are obtained or otherwise keeping track of the number of times you obtain a reference, you can also destroy a notifier with a single Release Notifier node using force destroy?.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

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