disable RLC latency measure when ENABLE_TIMESTAMP flag is disabled

lib/include/srslte/upper/rlc_am_lte.h

@@ -185,8 +185,10 @@ private:
     pthread_mutex_t mutex;
 
     // Metrics
-    uint64_t                        tx_byte_count = 0;
+    uint64_t tx_byte_count = 0;
+#ifdef ENABLE_TIMESTAMP
     srslte::rolling_average<double> mean_pdu_latency_us;
+#endif
   };
 
   // Receiver sub-class

lib/include/srslte/upper/rlc_um_lte.h

@@ -65,9 +65,10 @@ private:
     uint32_t vt_us = 0; // Send state. SN to be assigned for next PDU.
 
     // Metrics
-    uint64_t                        tx_byte_count = 0;
+    uint64_t tx_byte_count = 0;
+#ifdef ENABLE_TIMESTAMP
     srslte::rolling_average<double> mean_pdu_latency_us;
-
+#endif
     void debug_state();
   };
 

lib/src/upper/rlc_am_lte.cc

@@ -837,12 +837,14 @@ int rlc_am_lte::rlc_am_lte_tx::build_data_pdu(uint8_t* payload, uint32_t nof_byt
     tx_sdu->N_bytes -= to_move;
     tx_sdu->msg += to_move;
     if (tx_sdu->N_bytes == 0) {
+#ifdef ENABLE_TIMESTAMP
       long latency_us = tx_sdu->get_latency_us();
       mean_pdu_latency_us.push(latency_us);
       log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
                  RB_NAME,
                  latency_us,
                  (long)mean_pdu_latency_us.value());
+#endif
       tx_sdu.reset();
     }
     if (pdu_space > to_move) {
@@ -881,12 +883,14 @@ int rlc_am_lte::rlc_am_lte_tx::build_data_pdu(uint8_t* payload, uint32_t nof_byt
     tx_sdu->N_bytes -= to_move;
     tx_sdu->msg += to_move;
     if (tx_sdu->N_bytes == 0) {
+#ifdef ENABLE_TIMESTAMP
       long latency_us = tx_sdu->get_latency_us();
       mean_pdu_latency_us.push(latency_us);
       log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
                  RB_NAME,
                  latency_us,
                  (long)mean_pdu_latency_us.value());
+#endif
       tx_sdu.reset();
     }
     if (pdu_space > to_move) {

lib/src/upper/rlc_um_lte.cc

@@ -145,13 +145,14 @@ int rlc_um_lte::rlc_um_lte_tx::build_data_pdu(unique_byte_buffer_t pdu, uint8_t*
     tx_sdu->N_bytes -= to_move;
     tx_sdu->msg += to_move;
     if (tx_sdu->N_bytes == 0) {
+#ifdef ENABLE_TIMESTAMP
       long latency_us = tx_sdu->get_latency_us();
       mean_pdu_latency_us.push(latency_us);
       log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
                  rb_name.c_str(),
                  latency_us,
                  (long)mean_pdu_latency_us.value());
-
+#endif
       tx_sdu.reset();
     }
     pdu_space -= SRSLTE_MIN(to_move, pdu->get_tailroom());
@@ -181,13 +182,14 @@ int rlc_um_lte::rlc_um_lte_tx::build_data_pdu(unique_byte_buffer_t pdu, uint8_t*
     tx_sdu->N_bytes -= to_move;
     tx_sdu->msg += to_move;
     if (tx_sdu->N_bytes == 0) {
+#ifdef ENABLE_TIMESTAMP
       long latency_us = tx_sdu->get_latency_us();
       mean_pdu_latency_us.push(latency_us);
       log->debug("%s Complete SDU scheduled for tx. Stack latency (last/average): %ld/%ld us\n",
                  rb_name.c_str(),
                  latency_us,
                  (long)mean_pdu_latency_us.value());
-
+#endif
       tx_sdu.reset();
     }
     pdu_space -= to_move;