fixed memory leaks

lib/src/phy/enb/enb_ul.c

@@ -50,7 +50,7 @@ int srslte_enb_ul_init(srslte_enb_ul_t *q,
     
     bzero(q, sizeof(srslte_enb_ul_t));
     
-    q->users = calloc(sizeof(srslte_enb_ul_user_t*), SRSLTE_SIRNTI);
+    q->users = calloc(sizeof(srslte_enb_ul_user_t*), (1+SRSLTE_SIRNTI));
     if (!q->users) {
       perror("malloc");
       goto clean_exit;
@@ -110,7 +110,7 @@ void srslte_enb_ul_free(srslte_enb_ul_t *q)
   if (q) {
     
     if (q->users) {
-      for (int i=0;i<SRSLTE_SIRNTI;i++) {
+      for (int i=0;i<=SRSLTE_SIRNTI;i++) {
         if (q->users[i]) {
           free(q->users[i]);
         }
@@ -198,7 +198,7 @@ int srslte_enb_ul_set_cell(srslte_enb_ul_t *q, srslte_cell_t cell,
 int srslte_enb_ul_add_rnti(srslte_enb_ul_t *q, uint16_t rnti)
 {
   if (!q->users[rnti]) {
-    q->users[rnti] = malloc(sizeof(srslte_enb_ul_user_t));
+    q->users[rnti] = calloc(1, sizeof(srslte_enb_ul_user_t));
 
     if (srslte_pucch_set_crnti(&q->pucch, rnti)) {
       fprintf(stderr, "Error setting PUCCH rnti\n");

lib/src/phy/phch/pdsch.c

@@ -320,7 +320,7 @@ void srslte_pdsch_free(srslte_pdsch_t *q) {
     if (q->is_ue) {
       srslte_pdsch_free_rnti(q, 0);
     } else {
-      for (uint16_t u=0;u<SRSLTE_SIRNTI;u++) {
+      for (int u=0;u<=SRSLTE_SIRNTI;u++) {
         if (q->users[u]) {
           srslte_pdsch_free_rnti(q, u);
         }

lib/src/phy/phch/pucch.c

@@ -451,7 +451,7 @@ clean_exit:
 
 void srslte_pucch_free(srslte_pucch_t *q) {
   if (q->users) {
-    for (int rnti=0;rnti<SRSLTE_SIRNTI;rnti++) {      
+    for (int rnti=0;rnti<=SRSLTE_SIRNTI;rnti++) {
       srslte_pucch_clear_rnti(q, rnti);
     }
     free(q->users);

lib/src/phy/phch/pusch.c

@@ -295,7 +295,7 @@ void srslte_pusch_free(srslte_pusch_t *q) {
     if (q->is_ue) {
       srslte_pusch_free_rnti(q, 0);
     } else {
-      for (int rnti=0;rnti<SRSLTE_SIRNTI;rnti++) {
+      for (int rnti=0;rnti<=SRSLTE_SIRNTI;rnti++) {
         srslte_pusch_free_rnti(q, rnti);
       }
     }

lib/src/phy/rf/rf_uhd_imp.c

@@ -117,6 +117,7 @@ static void* async_thread(void *h) {
       return NULL; 
     }
   }
+  uhd_async_metadata_free(&md);
   return NULL; 
 }
 
@@ -457,15 +458,18 @@ int rf_uhd_close(void *h)
   uhd_rx_metadata_free(&handler->rx_md_first);
   uhd_rx_metadata_free(&handler->rx_md);
   uhd_meta_range_free(&handler->rx_gain_range);
-  uhd_tx_streamer_free(&handler->tx_stream);
-  uhd_rx_streamer_free(&handler->rx_stream);
   if (handler->has_rssi) {
     uhd_sensor_value_free(&handler->rssi_value);
   }
   handler->async_thread_running = false; 
   pthread_join(handler->async_thread, NULL);
+
+  uhd_tx_streamer_free(&handler->tx_stream);
+  uhd_rx_streamer_free(&handler->rx_stream);
   uhd_usrp_free(&handler->usrp);
 
+  free(handler);
+  
   /** Something else to close the USRP?? */
   return 0;
 }

lib/src/phy/utils/cexptab.c

@@ -36,7 +36,7 @@ int srslte_cexptab_init(srslte_cexptab_t *h, uint32_t size) {
   uint32_t i;
 
   h->size = size;
-  h->tab = malloc(sizeof(cf_t) * size);
+  h->tab = malloc(sizeof(cf_t) * (1+size));
   if (h->tab) {
     for (i = 0; i < size; i++) {
       h->tab[i] = cexpf(_Complex_I * 2 * M_PI * (float) i / size);

srsenb/hdr/enb.h

@@ -138,18 +138,23 @@ typedef struct {
   Main UE class
 *******************************************************************************/
 
+#define LOG_STDOUT
+
 class enb
-    :public enb_metrics_interface
-{
+    :public enb_metrics_interface {
 public:
   static enb *get_instance(void);
+
   static void cleanup(void);
 
   bool init(all_args_t *args_);
+
   void stop();
+
   void start_plot();
 
   static void rf_msg(srslte_rf_error_t error);
+
   void handle_rf_msg(srslte_rf_error_t error);
 
   // eNodeB metrics interface
@@ -160,7 +165,9 @@ public:
 
 private:
   static enb *instance;
+
   enb();
+
   virtual ~enb();
 
   srslte::radio radio;
@@ -173,7 +180,11 @@ private:
   srsenb::gtpu gtpu;
   srsenb::s1ap s1ap;
 
+#ifdef LOG_STDOUT
+    srslte::logger_stdout logger;
+#else
     srslte::logger_file logger;
+#endif
   srslte::log_filter  rf_log;
   std::vector<void*>  phy_log;
   srslte::log_filter  mac_log;

srsenb/hdr/mac/scheduler.h

@@ -80,6 +80,7 @@ public:
    ************************************************************/
   
   sched(); 
+  ~sched();
 
   void init(rrc_interface_mac *rrc, srslte::log *log);
   void set_metric(metric_dl *dl_metric, metric_ul *ul_metric);

srsenb/hdr/phy/phch_common.h

@@ -54,6 +54,7 @@ public:
  
   
   phch_common(uint32_t max_mutex_) : tx_mutex(max_mutex_) {
+    nof_mutex = 0;
     max_mutex = max_mutex_; 
     params.max_prach_offset_us = 20; 
   }

srsenb/hdr/phy/phch_worker.h

@@ -42,6 +42,7 @@ public:
   
   phch_worker();
   void  init(phch_common *phy, srslte::log *log_h);
+  void  stop();
   void  reset();
   
   cf_t *get_buffer_rx();
@@ -84,6 +85,8 @@ private:
   srslte::log    *log_h; 
   phch_common    *phy;
   bool           initiated;
+  bool           running;
+
   cf_t          *signal_buffer_rx; 
   cf_t          *signal_buffer_tx; 
   uint32_t       tti_rx, tti_tx, tti_sched_ul, sf_rx, sf_tx, sf_sched_ul, tx_mutex_cnt;

srsenb/src/enb.cc

@@ -45,6 +45,7 @@ enb* enb::get_instance(void)
 void enb::cleanup(void)
 {
   srslte_dft_exit();
+  srslte::byte_buffer_pool::cleanup();
   boost::mutex::scoped_lock lock(enb_instance_mutex);
   if(NULL != instance) {
       delete instance;
@@ -61,14 +62,15 @@ enb::enb()
 
 enb::~enb()
 {
-  srslte::byte_buffer_pool::cleanup();
 }
 
 bool enb::init(all_args_t *args_)
 {
   args     = args_;
 
+#ifndef LOG_STDOUT
     logger.init(args->log.filename);
+#endif
   rf_log.init("RF  ", &logger);
   
   // Create array of pointers to phy_logs 
@@ -87,7 +89,9 @@ bool enb::init(all_args_t *args_)
   s1ap_log.init("S1AP", &logger);
 
   // Init logs
+#ifndef LOG_STDOUT
     logger.log("\n\n");
+#endif
   rf_log.set_level(srslte::LOG_LEVEL_INFO);
   for (int i=0;i<args->expert.phy.nof_phy_threads;i++) {
     ((srslte::log_filter*) phy_log[i])->set_level(level(args->log.phy_level));

srsenb/src/mac/mac.cc

@@ -84,11 +84,15 @@ bool mac::init(mac_args_t *args_, srslte_cell_t *cell_, phy_interface_mac *phy,
 
     started = true; 
   }
+
   return started; 
 }
 
 void mac::stop()
 {
+  for (uint32_t i=0;i<ue_db.size();i++) {
+    delete ue_db[i];
+  }
   for (int i=0;i<NOF_BCCH_DLSCH_MSG;i++) {
     srslte_softbuffer_tx_free(&bcch_softbuffer_tx[i]);
   }  
@@ -113,16 +117,6 @@ void mac::reset()
   /* Setup scheduler */
   scheduler.reset();
   
-  /* Setup SI-RNTI in PHY */
-  phy_h->add_rnti(SRSLTE_SIRNTI);
-
-  /* Setup P-RNTI in PHY */
-  phy_h->add_rnti(SRSLTE_PRNTI);
-
-  /* Setup RA-RNTI in PHY */
-  for (int i=0;i<10;i++) {
-    phy_h->add_rnti(1+i);
-  }    
 }
 
 uint32_t mac::get_unique_id()

srsenb/src/mac/scheduler.cc

@@ -20,11 +20,18 @@ namespace srsenb {
  *******************************************************/
 sched::sched()
 {
+  current_tti = 0;
   log_h = NULL; 
   pthread_mutex_init(&mutex, NULL);
   reset();
 }
 
+sched::~sched()
+{
+  srslte_regs_free(&regs);
+  pthread_mutex_destroy(&mutex);
+}
+
 void sched::init(rrc_interface_mac *rrc_, srslte::log* log)
 {
   sched_cfg.pdsch_max_mcs = 28; 
@@ -39,6 +46,7 @@ void sched::init(rrc_interface_mac *rrc_, srslte::log* log)
 
 int sched::reset()
 {
+  bzero(pending_msg3, sizeof(pending_msg3_t)*10);
   bzero(pending_rar, sizeof(sched_rar_t)*SCHED_MAX_PENDING_RAR);
   bzero(pending_sibs, sizeof(sched_sib_t)*MAX_SIBS); 
   ue_db.clear();

srsenb/src/phy/phch_common.cc

@@ -60,7 +60,7 @@ bool phch_common::init(srslte_cell_t *cell_, srslte::radio* radio_h_, mac_interf
 
   is_first_of_burst = true; 
   is_first_tx = true; 
-  for (uint32_t i=0;i<nof_mutex;i++) {
+  for (uint32_t i=0;i<max_mutex;i++) {
     pthread_mutex_init(&tx_mutex[i], NULL);
   }
   reset(); 

srsenb/src/phy/phch_worker.cc

@@ -118,6 +118,17 @@ void phch_worker::init(phch_common* phy_, srslte::log *log_h_)
     return;
   }
   
+  /* Setup SI-RNTI in PHY */
+  add_rnti(SRSLTE_SIRNTI);
+
+  /* Setup P-RNTI in PHY */
+  add_rnti(SRSLTE_PRNTI);
+
+  /* Setup RA-RNTI in PHY */
+  for (int i=0;i<10;i++) {
+    add_rnti(1+i);
+  }
+
   srslte_pucch_set_threshold(&enb_ul.pucch, 0.8);
   srslte_sch_set_max_noi(&enb_ul.pusch.ul_sch, phy->params.pusch_max_its);
   srslte_enb_dl_set_amp(&enb_dl, phy->params.tx_amplitude);
@@ -125,12 +136,29 @@ void phch_worker::init(phch_common* phy_, srslte::log *log_h_)
   Info("Worker %d configured cell %d PRB\n", get_id(), phy->cell.nof_prb);
   
   initiated = true; 
+  running   = true;
 
 #ifdef DEBUG_WRITE_FILE
   f = fopen("test.dat", "w");
 #endif
 }
 
+void phch_worker::stop()
+{
+  running = false;
+  pthread_mutex_lock(&mutex);
+
+  srslte_enb_dl_free(&enb_dl);
+  srslte_enb_ul_free(&enb_ul);
+  if (signal_buffer_rx) {
+    free(signal_buffer_rx);
+  }
+  if (signal_buffer_tx) {
+    free(signal_buffer_tx);
+  }
+  pthread_mutex_unlock(&mutex);
+  pthread_mutex_destroy(&mutex);
+}
 void phch_worker::reset() 
 {
   initiated  = false; 
@@ -236,6 +264,10 @@ void phch_worker::work_imp()
 {
   uint32_t sf_ack;
 
+  if (!running) {
+    return;
+  }
+  
   pthread_mutex_lock(&mutex); 
   
   mac_interface_phy::ul_sched_t *ul_grants = phy->ul_grants;

srsenb/src/phy/phy.cc

@@ -134,6 +134,9 @@ void phy::stop()
 {  
   tx_rx.stop();  
   workers_common.stop();
+  for (uint32_t i=0;i<nof_workers;i++) {
+    workers[i].stop();
+  }
   workers_pool.stop();
   prach.stop();
 }

srsenb/src/phy/prach_worker.cc

@@ -59,6 +59,7 @@ int prach_worker::init(srslte_cell_t *cell_, srslte_prach_cfg_t *prach_cfg_, mac
   start(priority);
   initiated = true;
 
+  sf_cnt = 0;
   pending_tti   = 0; 
   processed_tti = 0; 
   return 0; 
@@ -66,6 +67,11 @@ int prach_worker::init(srslte_cell_t *cell_, srslte_prach_cfg_t *prach_cfg_, mac
 
 void prach_worker::stop()
 {
+  srslte_prach_free(&prach);
+
+  if (signal_buffer_rx) {
+    free(signal_buffer_rx);
+  }
   pthread_mutex_lock(&mutex);
   processed_tti = 99999; 
   running = false; 

srsenb/src/upper/rrc.cc

@@ -26,6 +26,7 @@
 
 #include <srslte/interfaces/sched_interface.h>
 #include <srslte/asn1/liblte_rrc.h>
+#include <upper/rrc.h>
 #include "srslte/asn1/liblte_mme.h"
 #include "upper/rrc.h"
 
@@ -62,6 +63,7 @@ void rrc::init(rrc_cfg_t *cfg_,
   pthread_mutex_init(&user_mutex, NULL);
   pthread_mutex_init(&paging_mutex, NULL);
 
+  act_monitor.start(RRC_THREAD_PRIO);
   bzero(&sr_sched, sizeof(sr_sched_t));
   
   start(RRC_THREAD_PRIO);
@@ -71,7 +73,6 @@ rrc::activity_monitor::activity_monitor(rrc* parent_)
 {
   running = true;
   parent = parent_;
-  start(RRC_THREAD_PRIO);
 }
 
 void rrc::activity_monitor::stop()
@@ -149,6 +150,7 @@ uint32_t rrc::generate_sibs()
     srslte_bit_pack_vector(bitbuffer.msg, sib_buffer[i].msg, bitbuffer.N_bits);
     sib_buffer[i].N_bytes = (bitbuffer.N_bits-1)/8+1;
   }
+  free(msg);
   return nof_messages; 
 }
 
@@ -604,6 +606,8 @@ void rrc::run_thread()
     if (p.pdu) {
       rrc_log->info_hex(p.pdu->msg, p.pdu->N_bytes, "Rx %s PDU", rb_id_text[p.lcid]);
     }
+    pthread_mutex_lock(&user_mutex);
+    if (users.count(p.rnti) == 1) {
       switch(p.lcid)
       {
         case RB_ID_SRB0:
@@ -614,13 +618,20 @@ void rrc::run_thread()
           parse_ul_dcch(p.rnti, p.lcid, p.pdu);
           break;
         case LCID_REM_USER:
+          pthread_mutex_unlock(&user_mutex);
           usleep(10000);
           rem_user(p.rnti);
+          pthread_mutex_lock(&user_mutex);
           break;
         default:
           rrc_log->error("Rx PDU with invalid bearer id: %s", p.lcid);
           break;
       }
+    } else {
+      printf("Discarting rnti=0x%xn", p.rnti);
+      rrc_log->warning("Discarting PDU for removed rnti=0x%x\n", p.rnti);
+    }
+    pthread_mutex_unlock(&user_mutex);
   }
 }
 void rrc::activity_monitor::run_thread()

srsenb/src/upper/s1ap.cc

@@ -347,6 +347,7 @@ bool s1ap::setup_s1()
   uint16_t                    tmp16;
   srslte::byte_buffer_t       msg;
   LIBLTE_S1AP_S1AP_PDU_STRUCT pdu;
+  bzero(&pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
 
   pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE;
 

srsue/hdr/mac/dl_harq.h

@@ -188,6 +188,12 @@ private:
         bzero(&cur_grant, sizeof(Tgrant));
       }
 
+      ~dl_tb_process() {
+        if (is_initiated) {
+          srslte_softbuffer_rx_free(&softbuffer);
+        }
+      }
+
       bool init(uint32_t pid_, dl_harq_entity *parent, uint32_t tb_idx) {
         tid = tb_idx;
         if (srslte_softbuffer_rx_init(&softbuffer, 110)) {

srsue/hdr/mac/proc_ra.h

@@ -71,6 +71,9 @@ class ra_proc : public srslte::timer_callback
       rar_grant_tti             = 0; 
       msg3_flushed              = false; 
     };
+
+    ~ra_proc();
+
     void init(phy_interface_mac *phy_h, 
               rrc_interface_mac *rrc_, 
               srslte::log *log_h, 

srsue/hdr/mac/ul_harq.h

@@ -163,9 +163,20 @@ private:
       is_initiated = false;
       is_grant_configured = false;
       tti_last_tx = 0;
+      payload_buffer = NULL;
       bzero(&cur_grant, sizeof(Tgrant));
     }
 
+    ~ul_harq_process()
+    {
+      if (is_initiated) {
+        if (payload_buffer) {
+          free(payload_buffer);
+        }
+        srslte_softbuffer_tx_free(&softbuffer);
+      }
+    }
+
     bool init(uint32_t pid_, ul_harq_entity *parent)
     {
       if (srslte_softbuffer_tx_init(&softbuffer, 110)) {

srsue/src/mac/mac.cc

@@ -86,6 +86,8 @@ bool mac::init(phy_interface_mac *phy, rlc_interface_mac *rlc, rrc_interface_mac
 
 void mac::stop()
 {
+  srslte_softbuffer_rx_free(&pch_softbuffer);
+
   started = false;   
   ttisync.increase();
   upper_timers_thread.thread_cancel();

srsue/src/mac/proc_ra.cc

@@ -73,6 +73,10 @@ void ra_proc::init(phy_interface_mac* phy_h_,
   reset();
 }
 
+ra_proc::~ra_proc() {
+  srslte_softbuffer_rx_free(&softbuffer_rar);
+}
+
 void ra_proc::reset() {
   state = IDLE;
   msg3_transmitted = false;

srsue/src/phy/phch_recv.cc

@@ -145,6 +145,7 @@ phch_recv::~phch_recv() {
   }
   srslte_ue_sync_free(&ue_sync);
   srslte_ue_dl_free(&ue_dl_measure);
+  srslte_ue_mib_free(&ue_mib);
   srslte_ue_mib_sync_free(&ue_mib_sync);
   srslte_ue_cellsearch_free(&cs);
 }