Memory Control Structure and Functions
Owning Palette: Application Control VIs and Functions
Requires: Base Package. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the Memory Control structures and functions to improve LabVIEW memory performance.
| Palette Object | Description |
|---|---|
| Always Copy | Places the value of Input into a new memory location and returns the value in Output. Use this function to control the outcome of the LabVIEW compiler buffer allocation process. |
| Array Index / Replace Elements | Right-click the border of an In Place Element structure and select the Add Array Index / Replace Elements option from the shortcut menu to place this border node on the In Place Element structure. |
| Array Split / Replace Subarrays | Split an array into subarrays along a dimension you specify and operate on the subarrays in place within the structure. Right-click the border of an In Place Element structure and select the Add Array Split / Replace Subarrays option from the shortcut menu to place this border node on the In Place Element structure. |
| Data Value Reference Read / Write Element | Accepts a data value reference as an input, allows you to operate on the data within the In Place Element structure, and replaces that data in the original memory space. Right-click the border of an In Place Element structure and select Add Data Value Reference Read / Write Element from the shortcut menu to place this border node on the In Place Element structure. You cannot find these border nodes in the palette search or quick drop search. |
| Delete Data Value Reference | Returns the data the reference points to and then deletes the data value reference. |
| In Place Element Structure | Controls how the LabVIEW compiler performs certain operations and, in some cases, increases memory and VI efficiency. Use the In Place Element structure when you operate on a data element within an array, cluster, variant, or waveform without requiring the LabVIEW compiler to copy data values and maintain those values in memory. You also can use this structure to operate on any data type that you want to maintain within the same data space in memory. Right-click the border of the structure and select the border node that matches the operation you want to perform. |
| In Place In / Out Element | Right-click the border of an In Place Element structure and select the Add In Place In / Out Element option from the shortcut menu to place this border node on the In Place Element structure. |
| New Data Value Reference | Creates a reference to data that you can use to transfer and access the data in a serialized way. |
| Request Deallocation | Deallocates unused memory after the VI that contains this function runs. |
| Swap Values | Places the value of the y input into the x' output and the value of the x input into the y' output without allocating memory to perform the operation. |
| Unbundle / Bundle Elements | Right-click the border of an In Place Element structure and select the Add Unbundle / Bundle Elements option from the shortcut menu to place this border node on the In Place Element structure. |
| Variant To / From Element | Right-click the border of an In Place Element structure and select the Add Variant To / From Element option from the shortcut menu to place this border node on the In Place Element structure. |
| Waveform Unbundle / Bundle Elements | Right-click the border of an In Place Element structure and select the Add Waveform Unbundle / Bundle Elements option from the shortcut menu to place this border node on the In Place Element structure. |