Defined if perCallFlags is nonzero. Iterates all monitored
file/line instances. The order of iteration is not meaningful (items
are inserted at the front of a list upon the first call), so
preprocessing the statistics after collection might be appropriate.
Defined if perCallFlags is nonzero. Iterates all monitored file/line instances. The order of iteration is not meaningful (items are inserted at the front of a list upon the first call), so preprocessing the statistics after collection might be appropriate.