protected var time_at_beginning = new Timespec.monotonic_now
# Time at last time a lapse method was called
protected var time_at_last_lapse = new Timespec.monotonic_now
# Smallest time frame reported by clock
protected var time_at_beginning = new Timespec.monotonic_now
# Time at last time a lapse method was called
protected var time_at_last_lapse = new Timespec.monotonic_now
# Smallest time frame reported by clock