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Detect disconnecton & handle error states in vrtsim

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Add handling for error states in vrtsim which allows to close the
softmodems with CTRL+C without hanging, improving user experience
 - Client detection of stale timer.
 - Abort state for client and server
This commit is contained in:
Bartosz Podrygajlo
2025-08-20 15:57:34 +02:00
parent 16f5299203
commit fcea07ca71
4 changed files with 85 additions and 14 deletions
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radio/vrtsim/vrtsim.c
+10 -3
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@@ -558,7 +558,15 @@ static int vrtsim_write(openair0_device *device, openair0_timestamp timestamp, v
static int vrtsim_read(openair0_device *device, openair0_timestamp *ptimestamp, void **samplesVoid, int nsamps, int nbAnt)
{
vrtsim_state_t *vrtsim_state = (vrtsim_state_t *)device->priv;
shm_td_iq_channel_wait(vrtsim_state->channel, vrtsim_state->last_received_sample + nsamps);
if (shm_td_iq_channel_is_aborted(vrtsim_state->channel)) {
LOG_E(HW, "Channel is aborted, returning void samples\n");
for (int i = 0; i < nbAnt; i++) {
memset(samplesVoid[i], 0, sizeof(c16_t) * nsamps);
}
return nsamps;
}
uint64_t timeout_uS = 2 * 1000 * 1000 / vrtsim_state->timescale; // 2 seconds in uS
shm_td_iq_channel_wait(vrtsim_state->channel, vrtsim_state->last_received_sample + nsamps, timeout_uS);
int ret = shm_td_iq_channel_rx(vrtsim_state->channel, vrtsim_state->last_received_sample, nsamps, 0, samplesVoid[0]);
if (ret == CHANNEL_ERROR_TOO_LATE) {
vrtsim_state->rx_samples_late += nsamps;
@@ -599,8 +607,7 @@ static void vrtsim_end(openair0_device *device)
taps_client_stop();
}
}
// produce 1 second of extra samples so threads can finish
shm_td_iq_channel_produce_samples(vrtsim_state->channel, vrtsim_state->sample_rate);
shm_td_iq_channel_abort(vrtsim_state->channel);
sleep(1);
shm_td_iq_channel_destroy(vrtsim_state->channel);