The number of ticks in the monotonic time.
long ticks() const pure nothrow @nogc @property;
Most programs should not use this directly, but it's exposed for those few programs that need it.
The main reasons that a program might need to use ticks directly is if the system clock has higher precision than hnsecs, and the program needs that higher precision, or if the program needs to avoid the rounding errors caused by converting to hnsecs.
Jonathan M Davis and Kato Shoichi