void ntpshm_link_activate(struct gps_device_t *session)
/* set up ntpshm storage for a session */
{
/* allocate a shared-memory segment for "NMEA" time data */
session->shmIndex = ntpshm_alloc(session->context);
if (0 > session->shmIndex) {
gpsd_report(&session->context->errout, LOG_INF,
"NTPD ntpshm_alloc() failed\n");
#if defined(PPS_ENABLE)
} else if (session->sourcetype == source_usb || session->sourcetype == source_rs232) {
/* We also have the 1pps capability, allocate a shared-memory segment
* for the 1pps time data and launch a thread to capture the 1pps
* transitions
*/
if ((session->shmIndexPPS = ntpshm_alloc(session->context)) < 0) {
gpsd_report(&session->context->errout, LOG_INF,
"NTPD ntpshm_alloc(1) failed\n");
} else {
init_hook(session);
session->thread_report_hook = report_hook;
session->thread_wrap_hook = wrap_hook;
pps_thread_activate(session);
}
#endif /* PPS_ENABLE */
}
}
void ntpshm_link_activate(struct gps_device_t *session)
/* set up ntpshm storage for a session */
{
/* don't talk to NTP when we're running inside the test harness */
if (session->sourcetype == source_pty)
return;
if (session->sourcetype != source_pps ) {
/* allocate a shared-memory segment for "NMEA" time data */
session->shm_clock = ntpshm_alloc(session->context);
if (session->shm_clock == NULL) {
gpsd_log(&session->context->errout, LOG_WARN,
"NTP: ntpshm_alloc() failed\n");
return;
}
}
#if defined(PPS_ENABLE)
if (session->sourcetype == source_usb
|| session->sourcetype == source_rs232
|| session->sourcetype == source_pps) {
/* We also have the 1pps capability, allocate a shared-memory segment
* for the 1pps time data and launch a thread to capture the 1pps
* transitions
*/
if ((session->shm_pps = ntpshm_alloc(session->context)) == NULL) {
gpsd_log(&session->context->errout, LOG_WARN,
"PPS: ntpshm_alloc(1) failed\n");
} else {
init_hook(session);
session->pps_thread.report_hook = report_hook;
/*
* The HAT kludge. If we're using the HAT GPS on a
* Raspberry Pi or a workalike like the ODROIDC2, and
* there is a static /dev/pps0, and we have access because
* we're root, assume we want to use KPPS.
*/
if ((strcmp(session->pps_thread.devicename, MAGIC_HAT_GPS) == 0
|| strcmp(session->pps_thread.devicename, MAGIC_LINK_GPS) == 0)
&& access("/dev/pps0", R_OK | W_OK) == 0)
session->pps_thread.devicename = "/dev/pps0";
pps_thread_activate(&session->pps_thread);
}
}
#endif /* PPS_ENABLE */
}