Loops processing a wait-state-collection.
loop-processing-wait-state-collection loops waiting for any state to be ready (using wait-for-wait-state-collection) and processes any state that is ready (using call-wait-state-collection). It establishes restarts that allow aborting back into the loop, and a mechanism that allows wait-state-collection-stop-loop to stop the loop.
In most cases using create-and-run-wait-state-collection is more convenient.
There can be only one
loop-processing-wait-state-collection on each wait-state-collection at a time. Typically this will occur in a process that is made specifically to run
loop-processing-wait-state-collection on the collection.
LispWorks User Guide and Reference Manual - 20 Sep 2017