SharedArea (FB)¶

FUNCTION_BLOCK FINAL SharedArea EXTENDS FBF.InstanceBase IMPLEMENTS ISharedArea, IReadableSharedArea, IWriteableSharedArea

InOut:

Scope	Name	Type	Initial	Comment
Input	`pData`	`__XWORD`
	`udiDataSize`	`UDINT`
	`udiInitialCapacity`	`UDINT`	5	The initial max number (>1) of possible references of the shared data
	`pPool`	POINTER TO BYTE		The optinonal memory space for the background pool. `pPool = 0` => Memory is allocated from Heap `pPool <> 0` => The related static Memory of size `udiPoolSize` is used.
	`udiPoolSize`	`UDINT`		The size of the memory area referenced by `pPool` Condition: `udiPoolSize >= TO_UDINT(MBM.PoolGetSize(udiInitialCapacity, udiDataSize + SIZEOF(AreaData) - SIZEOF(DWORD)));`
	`itfObserver`	ISharedAreaObserver		An optional observer implemetation registered with initilaization.
	`itfUtilities`	ISharedAreaUtilities		An optional specialized implementations for `AreaCopyData` and `AreaIsEqual`.

Properties:

AreaCurrentCapacity

Methods:

AreaCompareAndSwap

AreaIncreaseCapacity

AreaRead

AreaSetObserver

AreaWrite

Dispose

Structure: