sets up a "watcher" function that will report on the progress
of a multi-process process that is being indicated by set_progress_mp.
watch_progress_mp(
n,
min_time = 0,
watch_location = NULL,
progress_location = make_kpb_output_decisions()
)number of times process is running
how long to wait
where is the progress being written to
where to write the progress output
ProgressMPWatcher
set_progress_mp