returns nanoseconds since boot , including time spent in sleep . concode_field_sep long sBootTimeNano concode_elem_sep long sBootTime concode_field_sep long currentThreadTimeMillis concode_elem_sep long currentTimeMicro concode_elem_sep long uptimeMillis concode_elem_sep long elapsedRealtime concode_elem_sep long currentThreadTimeMicro
long function ( ) { return System . nanoTime ( ) - sBootTimeNano ; }