Fixed phy_log was allocating memory dynamically on every call even when not enabled

lib/src/phy/common/phy_logger.c

@@ -46,15 +46,12 @@ void srslte_phy_log_register_handler(void *ctx, phy_log_handler_t handler) {
 }
 
  void srslte_phy_log_print(phy_logger_level_t log_level, const char *format, ...) {
+  char tmp[256];
   va_list   args;
   va_start(args, format);
   if (phy_log_handler) {
-    char *args_msg = NULL;
-    if(vasprintf(&args_msg, format, args) > 0) {
-      phy_log_handler(log_level, callback_ctx, args_msg);
-    }
-    if (args_msg) {
-      free(args_msg); 
+    if(vsnprintf(tmp, 256, format, args) > 0) {
+      phy_log_handler(log_level, callback_ctx, tmp);
     }
   }
   va_end(args);

srsue/src/phy/phch_recv.cc

@@ -379,7 +379,9 @@ void phch_recv::run_thread()
   {
     Debug("SYNC:  state=%s\n", phy_state.to_string());
 
+    if (log_phy_lib_h) {
       log_phy_lib_h->step(tti);
+    }
 
     sf_idx = tti%10;
 

srsue/src/phy/phch_worker.cc

@@ -192,8 +192,10 @@ void phch_worker::set_tti(uint32_t tti_, uint32_t tx_tti_)
   tti    = tti_; 
   tx_tti = tx_tti_;
   log_h->step(tti);
+  if (log_phy_lib_h) {
     log_phy_lib_h->step(tti);
   }
+}
 
 void phch_worker::set_prach(cf_t *prach_ptr, float prach_power) {
   this->prach_ptr   = prach_ptr;

srsue/src/phy/phy.cc

@@ -143,8 +143,12 @@ bool phy::init(srslte::radio_multi* radio_handler, mac_interface_phy *mac, rrc_i
     nof_coworkers = SRSLTE_MIN(nof_workers - MAX_WORKERS, MAX_WORKERS);
     nof_workers = MAX_WORKERS;
   }
+  if (log_vec[nof_workers]) {
     this->log_phy_lib_h = (srslte::log*) log_vec[nof_workers];
     srslte_phy_log_register_handler(this, srslte_phy_handler);
+  } else {
+    this->log_phy_lib_h = NULL;
+  }
 
   initiated = false;
   start();

srsue/src/ue.cc

@@ -45,8 +45,10 @@ ue::ue()
 ue::~ue()
 {
   for (uint32_t i = 0; i < phy_log.size(); i++) {
+    if (phy_log[i]) {
       delete(phy_log[i]);
     }
+  }
   if (usim) {
     delete usim;
   }
@@ -95,12 +97,16 @@ bool ue::init(all_args_t *args_) {
   }
   
   /* here we add a log layer to handle logging from the phy library*/
+  if (level(args->log.phy_lib_level) != LOG_LEVEL_NONE) {
     srslte::log_filter *lib_log = new srslte::log_filter;
     char tmp[16];
     sprintf(tmp, "PHY_LIB");
     lib_log->init(tmp, logger, true);
     phy_log.push_back(lib_log);
     ((srslte::log_filter*) phy_log[nof_phy_threads])->set_level(level(args->log.phy_lib_level));
+  } else {
+    phy_log.push_back(NULL);
+  }
 
   
   mac_log.set_level(level(args->log.mac_level));
@@ -112,8 +118,10 @@ bool ue::init(all_args_t *args_) {
   usim_log.set_level(level(args->log.usim_level));
 
   for (int i=0;i<nof_phy_threads + 1;i++) {
+    if (phy_log[i]) {
       ((srslte::log_filter*) phy_log[i])->set_hex_limit(args->log.phy_hex_limit);
     }
+  }
   mac_log.set_hex_limit(args->log.mac_hex_limit);
   rlc_log.set_hex_limit(args->log.rlc_hex_limit);
   pdcp_log.set_hex_limit(args->log.pdcp_hex_limit);