openpilot/common/clock.pyx

from posix.time cimport clock_gettime, timespec, CLOCK_MONOTONIC_RAW, clockid_t

IF UNAME_SYSNAME == "Darwin":
  # Darwin doesn't have a CLOCK_BOOTTIME
  CLOCK_BOOTTIME = CLOCK_MONOTONIC_RAW
ELSE:
  from posix.time cimport CLOCK_BOOTTIME

cdef double readclock(clockid_t clock_id):
  cdef timespec ts
  cdef double current

  clock_gettime(clock_id, &ts)
  current = ts.tv_sec + (ts.tv_nsec / 1000000000.)
  return current

def monotonic_time():
  return readclock(CLOCK_MONOTONIC_RAW)

def sec_since_boot():
  return readclock(CLOCK_BOOTTIME)