Function fbclock_clockdata_load_data

fbclock/fbclock.c:173–190

  fbclock_section_store(&shmp->realtime, data);
  munmap(shmp, FBCLOCK_SHMDATA_V2_SIZE);
  return FBCLOCK_E_NO_ERROR;
}

int fbclock_clockdata_load_data(
    fbclock_shmdata* shmp,
    fbclock_clockdata* data) {
  for (int i = 0; i < FBCLOCK_MAX_READ_TRIES; i++) {
    memcpy(data, &shmp->data, FBCLOCK_CLOCKDATA_SIZE);
    uint64_t crc = atomic_load(&shmp->crc);
    uint64_t our_crc = fbclock_clockdata_crc(data);
    if (our_crc == crc) {
      fbclock_debug_print("reading clock data took %d tries\n", i + 1);
      return FBCLOCK_E_NO_ERROR;
    }
  }
  fbclock_debug_print(
      "failed to read clock data after %d tries\n", FBCLOCK_MAX_READ_TRIES);
  // TODO: Enable mismatch error.
  // return FBCLOCK_E_CRC_MISMATCH;
  return FBCLOCK_E_NO_ERROR;
}