When no work is currently outstanding, the Base thread of execution sleeps, waiting for an event or for a maximum period of five seconds. SNALinks should signal the Base when an event occurs (such as data arriving on the link) by setting the Base global event. A handle to this event is passed on the SNALinkInitialize call.
When the Base is rescheduled, it calls the SNALink work manager function SNALinkWorkProc. This function should handle any link events that have occurred.
A common use of this function is in an SNALink where there is a single thread that handles the protocol of the link and also multiple threads suspended on synchronous calls to a driver read function. When data is received from the link, it is placed on an internal queue, and the driver sets the global Base event. This causes the Base to be scheduled, and SNALinkWorkProc is called. SNALinkWorkProc then dequeues messages and passes them to the Base to be sent to the local node.