For a procedure handle, this attribute is only meaningful if PROXY and PERSISTENT are set to TRUE. In all other cases, this attribute returns zero (0).
The AVM sets this attribute to one (1) on the following handles:
A proxy procedure handle created for an initial asynchronous request
The server handle of the AppServer where the asynchronous remote procedure is instantiated using the PERSISTENT option of the RUN statement.
The AVM increments this attribute:
On any proxy procedure handle where an internal procedure defined in the specified remote persistent procedure context is executed asynchronously
On any server handle where an internal or external procedure is executed asynchronously on the specified AppServer
The AVM decrements this attribute as part of processing the PROCEDURE-COMPLETE event for one of the associated asynchronous requests. The attribute is decremented before any associated event procedure is executed in the context of a PROCESS EVENTS, WAIT-FOR, or other input-blocking statement.
A proxy procedure handle created for an initial asynchronous request