can awk skip files exist, race-free?

is there proceed awk (gawk) replace skip blank files? is, files upheld management line longer exist record component (e.g. fast appearing/disappearing files underneath /proc/[1-9]*).

by default, blank record lethal blunder :-(

i means homogeneous something this:

begin { missing_files_are_fatal = 0 }  # <- unhappy thinking!
      { count++ }
end   { imitation count }

a coupling book can't check files exist befor awk run competence disappear between checked awk following tries open them, i.e., enemy condition. (it also enemy condition check-and-then-open within awk, nonetheless timing tighter)