see Roll your own Event-loop which will give you milliseconds..... getting into micro and nano seconds on a personal computer, probably is futile..... even getting millisecond differences to mean anything in a program is probably futile....except for the purposes of assigning unique names

what i'm trying to say is that so called accurate time you get is only the internal clock of the computer being read by the microprocessor..... by the time it can get outputed into a program to do useful things, many variable rate time lapses are introduced, making them less accurate