Merge remote-tracking branch 'origin/t_tracer_w32' into develop_integration_2018_w33

cmake_targets/CMakeLists.txt

@@ -1880,9 +1880,13 @@ endif (${T_TRACER})
 #This rule and the following deal with it.
 add_custom_command (
   OUTPUT ${OPENAIR_DIR}/common/utils/T/T_IDs.h
-  COMMAND make
+  COMMAND $(MAKE) clean
+  COMMAND $(MAKE)
+  COMMAND $(MAKE) check_vcd
   WORKING_DIRECTORY ${OPENAIR_DIR}/common/utils/T
   DEPENDS ${OPENAIR_DIR}/common/utils/T/T_messages.txt
+          ${OPENAIR_DIR}/common/utils/LOG/vcd_signal_dumper.c
+          ${OPENAIR_DIR}/common/utils/LOG/vcd_signal_dumper.h
   )
 
 #This rule is specifically needed to generate T files
@@ -2187,7 +2191,8 @@ if (${T_TRACER})
         oai_eth_transpro
         FLPT_MSG ASYNC_IF FLEXRAN_AGENT HASHTABLE MSC UTIL OMG_SUMO SECU_OSA
         SECU_CN SCHED_LIB PHY L2 default_sched remote_sched RAL CN_UTILS
-        GTPV1U SCTP_CLIENT UDP LIB_NAS_UE LFDS LFDS7 SIMU OPENAIR0_LIB PHY_MEX)
+        GTPV1U SCTP_CLIENT UDP LIB_NAS_UE LFDS LFDS7 SIMU OPENAIR0_LIB PHY_MEX
+        coding)
     if (TARGET ${i})
       add_dependencies(${i} generate_T)
     endif()
@@ -2230,7 +2235,7 @@ function(make_driver name dir)
   endforeach()
   CONFIGURE_FILE(${OPENAIR_CMAKE}/tools/Kbuild.cmake ${OPENAIR_BIN_DIR}/${name}/Kbuild)
   add_custom_command(OUTPUT ${name}.ko
-    COMMAND make -C ${module_build_path} M=${OPENAIR_BIN_DIR}/${name}
+    COMMAND $(MAKE) -C ${module_build_path} M=${OPENAIR_BIN_DIR}/${name}
     WORKING_DIRECTORY ${OPENAIR_BIN_DIR}/${name}
     COMMENT "building ${module}.ko"
     VERBATIM

common/utils/LOG/vcd_signal_dumper.h

@@ -39,7 +39,7 @@
 
 /* WARNING: if you edit the enums below, update also string definitions in vcd_signal_dumper.c */
 typedef enum {
-  VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_ENB = 0,
+  VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_ENB=0,
   VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX1_ENB,
   VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX0_ENB,
   VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX1_ENB,
@@ -91,12 +91,12 @@ typedef enum {
   VCD_SIGNAL_DUMPER_VARIABLES_TX_SEQ_NUM,
   VCD_SIGNAL_DUMPER_VARIABLES_CNT,
   VCD_SIGNAL_DUMPER_VARIABLES_DUMMY_DUMP,
-  VCD_SIGNAL_DUMPER_VARIABLE_ITTI_SEND_MSG,
-  VCD_SIGNAL_DUMPER_VARIABLE_ITTI_POLL_MSG,
-  VCD_SIGNAL_DUMPER_VARIABLE_ITTI_RECV_MSG,
-  VCD_SIGNAL_DUMPER_VARIABLE_ITTI_ALLOC_MSG,
-  VCD_SIGNAL_DUMPER_VARIABLE_MP_ALLOC,
-  VCD_SIGNAL_DUMPER_VARIABLE_MP_FREE,
+  VCD_SIGNAL_DUMPER_VARIABLES_ITTI_SEND_MSG,
+  VCD_SIGNAL_DUMPER_VARIABLES_ITTI_POLL_MSG,
+  VCD_SIGNAL_DUMPER_VARIABLES_ITTI_RECV_MSG,
+  VCD_SIGNAL_DUMPER_VARIABLES_ITTI_ALLOC_MSG,
+  VCD_SIGNAL_DUMPER_VARIABLES_MP_ALLOC,
+  VCD_SIGNAL_DUMPER_VARIABLES_MP_FREE,
   VCD_SIGNAL_DUMPER_VARIABLES_UE_INST_CNT_RX,
   VCD_SIGNAL_DUMPER_VARIABLES_UE_INST_CNT_TX,
   VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,

common/utils/T/.gitignore

@@ -15,4 +15,5 @@ tracer/to_vcd
 tracer/extract_input_subframe
 tracer/extract_output_subframe
 tracer/extract
+tracer/multi
 tracee/tracee

common/utils/T/Makefile

@@ -18,6 +18,15 @@ T_messages.txt.h: T_messages.txt
 T_IDs.h: $(GENIDS) T_messages.txt
 	./$(GENIDS) T_messages.txt T_IDs.h
 
+check_vcd:
+	gcc -Wall -I. -I.. -I../itti -Itracer -o _check_vcd check_vcd.c tracer/database.c tracer/utils.c -lm -pthread
+	./_check_vcd || (rm -f ./_check_vcd ./T_IDs.h ./T_messages.txt.h && false)
+	rm -f ./_check_vcd
+
+.PHONY: check_vcd
+
 clean:
-	rm -f *.o $(GENIDS) core T_IDs.h T_messages.txt.h
-	cd tracer && make clean
+	rm -f *.o $(GENIDS) core T_IDs.h T_messages.txt.h _check_vcd
+
+cleanall: clean
+	cd tracer && $(MAKE) clean

common/utils/T/T.c

@@ -31,6 +31,12 @@ volatile int _T_freelist_head;
 volatile int *T_freelist_head = &_T_freelist_head;
 T_cache_t *T_cache;
 
+#if BASIC_SIMULATOR
+/* global variables used by T_GET_SLOT, see in T.h */
+volatile uint64_t T_next_id;
+volatile uint64_t T_active_id;
+#endif
+
 static void get_message(int s)
 {
   char t;
@@ -91,7 +97,7 @@ static void new_thread(void *(*f)(void *), void *data)
 
 /* defined in local_tracer.c */
 void T_local_tracer_main(int remote_port, int wait_for_tracer,
-    int local_socket, char *shm_file);
+    int local_socket, void *shm_array);
 
 /* We monitor the tracee and the local tracer processes.
  * When one dies we forcefully kill the other.
@@ -114,22 +120,31 @@ void T_init(int remote_port, int wait_for_tracer, int dont_fork)
 {
   int socket_pair[2];
   int s;
-  int T_shm_fd;
   int child1, child2;
-  char shm_file[128];
-
-  sprintf(shm_file, "/%s%d", T_SHM_FILENAME, getpid());
+  int i;
 
   if (socketpair(AF_UNIX, SOCK_STREAM, 0, socket_pair))
     { perror("socketpair"); abort(); }
 
+  /* setup shared memory */
+  T_cache = mmap(NULL, T_CACHE_SIZE * sizeof(T_cache_t),
+                 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0);
+  if (T_cache == MAP_FAILED)
+    { perror("mmap"); abort(); }
+
+  /* let's garbage the memory to catch some potential problems
+   * (think multiprocessor sync issues, barriers, etc.)
+   */
+  memset(T_cache, 0x55, T_CACHE_SIZE * sizeof(T_cache_t));
+  for (i = 0; i < T_CACHE_SIZE; i++) T_cache[i].busy = 0;
+
   /* child1 runs the local tracer and child2 (or main) runs the tracee */
 
   child1 = fork(); if (child1 == -1) abort();
   if (child1 == 0) {
     close(socket_pair[1]);
     T_local_tracer_main(remote_port, wait_for_tracer, socket_pair[0],
-                        shm_file);
+                        T_cache);
     exit(0);
   }
   close(socket_pair[0]);
@@ -138,6 +153,7 @@ void T_init(int remote_port, int wait_for_tracer, int dont_fork)
     child2 = fork(); if (child2 == -1) abort();
     if (child2 != 0) {
       close(socket_pair[1]);
+      munmap(T_cache, T_CACHE_SIZE * sizeof(T_cache_t));
       monitor_and_kill(child1, child2);
     }
   }
@@ -148,34 +164,29 @@ void T_init(int remote_port, int wait_for_tracer, int dont_fork)
 
   T_socket = s;
 
-  /* setup shared memory */
-  T_shm_fd = shm_open(shm_file, O_RDWR /*| O_SYNC*/, 0666);
-  shm_unlink(shm_file);
-  if (T_shm_fd == -1) { perror(shm_file); abort(); }
-  T_cache = mmap(NULL, T_CACHE_SIZE * sizeof(T_cache_t),
-                 PROT_READ | PROT_WRITE, MAP_SHARED, T_shm_fd, 0);
-  if (T_cache == MAP_FAILED)
-    { perror(shm_file); abort(); }
-  close(T_shm_fd);
-
   new_thread(T_receive_thread, NULL);
 }
 
 void T_Config_Init(void)
 {
-int T_port;            /* by default we wait for the tracer */
-int T_nowait;	      /* default port to listen to to wait for the tracer */
-int T_dont_fork;       /* default is to fork, see 'T_init' to understand */
+  int T_port;         /* by default we wait for the tracer */
+  int T_nowait;       /* default port to listen to to wait for the tracer */
+  int T_dont_fork;    /* default is to fork, see 'T_init' to understand */
 
-paramdef_t ttraceparams[] = CMDLINE_TTRACEPARAMS_DESC ;
+  paramdef_t ttraceparams[] = CMDLINE_TTRACEPARAMS_DESC;
 
-/* for a cleaner config file, TTracer params should be defined in a specific section... */
-  config_get( ttraceparams,sizeof(ttraceparams)/sizeof(paramdef_t),TTRACER_CONFIG_PREFIX);
+  /* for a cleaner config file, TTracer params should be defined in a
+   * specific section...
+   */
+  config_get(ttraceparams,
+             sizeof(ttraceparams) / sizeof(paramdef_t),
+             TTRACER_CONFIG_PREFIX);
 
-/* compatibility: look for TTracer command line options in root section */
-  config_process_cmdline( ttraceparams,sizeof(ttraceparams)/sizeof(paramdef_t),NULL);
+  /* compatibility: look for TTracer command line options in root section */
+  config_process_cmdline(ttraceparams,
+                         sizeof(ttraceparams) / sizeof(paramdef_t),
+                         NULL);
 
-  if (T_stdout == 0) {
+  if (T_stdout == 0)
     T_init(T_port, 1-T_nowait, T_dont_fork);
-  }
 }

common/utils/T/T.h

@@ -112,13 +112,37 @@ extern volatile int *T_freelist_head;
 extern T_cache_t *T_cache;
 extern int *T_active;
 /* When running the basic simulator, we may fill the T cache too fast.
- * Let's not crash if it's full, just wait.
+ * Let's serialize write accesses to the T cache. For that, we use a
+ * 'ticket' mechanism. To acquire a T slot the caller needs to own the
+ * current active ticket. We also wait for the slot to be free if
+ * it is already in use.
  */
 #if BASIC_SIMULATOR
-#  define T_BASIC_SIMULATOR_WAIT \
-     while (T_cache[T_LOCAL_slot].busy) usleep(100)
+#  define T_GET_SLOT \
+     do { \
+       extern volatile uint64_t T_next_id; \
+       extern volatile uint64_t T_active_id; \
+       uint64_t id; \
+       /* get a ticket */ \
+       id = __sync_fetch_and_add(&T_next_id, 1); \
+       /* wait for our turn */ \
+       while (id != __sync_fetch_and_add(&T_active_id, 0)) /* busy wait */; \
+       /* this is our turn, try to acquire the slot until it's free */ \
+       do { \
+         T_LOCAL_busy = __sync_fetch_and_or(&T_cache[T_LOCAL_slot].busy, 0x01); \
+         if (T_LOCAL_busy & 0x01) usleep(100); \
+       } while (T_LOCAL_busy & 0x01); \
+       /* check that there are still some tickets */ \
+       if (__sync_fetch_and_add(&T_active_id, 0) == 0xffffffffffffffff) { \
+         printf("T: reached the end of times, bye...\n"); \
+         abort(); \
+       } \
+       /* free our ticket, which signals the next waiter that it's its turn */ \
+       (void)__sync_fetch_and_add(&T_active_id, 1); \
+     } while (0)
 #else
-#  define T_BASIC_SIMULATOR_WAIT /* */
+#  define T_GET_SLOT \
+     T_LOCAL_busy = __sync_fetch_and_or(&T_cache[T_LOCAL_slot].busy, 0x01);
 #endif
 
 /* used at header of Tn, allocates buffer */
@@ -126,11 +150,12 @@ extern int *T_active;
   char *T_LOCAL_buf; \
   int T_LOCAL_size = 0; \
   int T_LOCAL_slot; \
+  int T_LOCAL_busy; \
   T_LOCAL_slot = __sync_fetch_and_add(T_freelist_head, 1) \
                  & (T_CACHE_SIZE - 1); \
   (void)__sync_fetch_and_and(T_freelist_head, T_CACHE_SIZE - 1); \
-  T_BASIC_SIMULATOR_WAIT; \
-  if (T_cache[T_LOCAL_slot].busy) { \
+  T_GET_SLOT; \
+  if (T_LOCAL_busy & 0x01) { \
     printf("%s:%d:%s: T cache is full - consider increasing its size\n", \
            __FILE__, __LINE__, __FUNCTION__); \
     abort(); \
@@ -142,7 +167,7 @@ extern int *T_active;
 #define T_COMMIT() \
   T_cache[T_LOCAL_slot].length = T_LOCAL_size; \
   __sync_synchronize(); \
-  T_cache[T_LOCAL_slot].busy = 1; \
+  (void)__sync_fetch_and_or(&T_cache[T_LOCAL_slot].busy, 0x02);
 
 #define T_CHECK_SIZE(len, argnum) \
   if (T_LOCAL_size + (len) > T_BUFFER_MAX) { \
@@ -578,10 +603,10 @@ extern int *T_active;
 /*   optname                     helpstr                paramflags           XXXptr           defXXXval         type       numelt           */
 /*------------------------------------------------------------------------------------------------------------------------------------------*/
 #define CMDLINE_TTRACEPARAMS_DESC {  \
-{"T_port",                     CONFIG_HLP_TPORT,      0,		iptr:&T_port,	     defintval:2021,	TYPE_INT,   0},	   \
-{"T_nowait",                   CONFIG_HLP_NOTWAIT,    PARAMFLAG_BOOL,	iptr:&T_nowait,      defintval:0,	TYPE_INT,   0},	   \
-{"T_dont_fork",                CONFIG_HLP_TNOFORK,    PARAMFLAG_BOOL,	iptr:&T_dont_fork,   defintval:0,	TYPE_INT,   0},	   \
-{"T_stdout",                   CONFIG_HLP_STDOUT,     PARAMFLAG_BOOL,	iptr:&T_stdout,      defintval:1,	TYPE_INT,   0},	   \
+{"T_port",                     CONFIG_HLP_TPORT,      0,                iptr:&T_port,        defintval:2021,     TYPE_INT,   0},           \
+{"T_nowait",                   CONFIG_HLP_NOTWAIT,    PARAMFLAG_BOOL,   iptr:&T_nowait,      defintval:0,        TYPE_INT,   0},           \
+{"T_dont_fork",                CONFIG_HLP_TNOFORK,    PARAMFLAG_BOOL,   iptr:&T_dont_fork,   defintval:0,        TYPE_INT,   0},           \
+{"T_stdout",                   CONFIG_HLP_STDOUT,     PARAMFLAG_BOOL,   iptr:&T_stdout,      defintval:1,        TYPE_INT,   0},           \
 } 
 
 

common/utils/T/T_defs.h

@@ -31,13 +31,15 @@
 #endif
 
 typedef struct {
+  /* 'busy' is a bit field
+   * bit 0: 1 means that slot is acquired by writer
+   * bit 1: 1 means that slot is ready for consumption
+   */
   volatile int busy;
   char buffer[T_BUFFER_MAX];
   int length;
 } T_cache_t;
 
-#define T_SHM_FILENAME "/T_shm_segment"
-
 /* number of VCD functions (to be kept up to date! see in T_messages.txt) */
 #define VCD_NUM_FUNCTIONS 190
 

common/utils/T/check_vcd.c

+/*
+ * To disable the checks done by this program, see below at the beginning
+ * of the function 'main'.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "database.h"
+
+#define T_TRACER 1
+#include "T.h"
+
+/* VCD specific defines and includes
+ * If the codebase changes, it may need to be updated
+ */
+#define ENB_MODE
+#define ENABLE_USE_CPU_EXECUTION_TIME
+#include "../LOG/vcd_signal_dumper.c"
+
+void err(char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
+void err(char *fmt, ...)
+{
+  va_list ap;
+
+  va_start(ap, fmt);
+
+  printf("\x1b[31m");
+  printf("error: ");
+  vprintf(fmt, ap);
+  printf("\n"
+"\x1b[33m\n"
+"You probably added a VCD trace (variable or function) but you did not\n"
+"update T_messages.txt and/or T_defs.h in common/utils/T/\n"
+"\n"
+"Be sure to add the new trace to T_messages.txt, at the right place in the\n"
+"file. Do not forget to define VCD_NAME with an identical value as found\n"
+"in the array eurecomVariablesNames or eurecomFunctionsNames.\n"
+"\n"
+"Be sure to update VCD_NUM_FUNCTIONS, VCD_NUM_VARIABLES, VCD_FIRST_FUNCTION\n"
+"and VCD_FIRST_VARIABLE in T_defs.h\n"
+"\n"
+"The same procedure has to be followed when you delete a VCD trace.\n"
+"Delete it in T_messages.txt as well and update T_defs.h\n"
+"\n"
+"You can disable those VCD checks at development time.\n"
+"To disable the VCD checks see the file common/utils/T/check_vcd.c\n"
+"Do not push any modification that disables the VCD checks to the\n"
+"main repository.\n");
+
+  printf("\x1b[m\n");
+
+  va_end(ap);
+
+  exit(1);
+}
+
+int main(void)
+{
+  /* to disable the checks done by this program, uncomment the following
+   * line, ie. remove the leading '//'
+   */
+  //return 0;
+
+  void *database = parse_database("T_messages.txt");
+  int number_of_events;
+  int first_var = -1;
+  int last_var;
+  int first_fun = -1;
+  int last_fun;
+  char *prefix;
+  int prefix_len;
+  char *name;
+  char *vcd_name;
+  int i;
+  FILE *in;
+  char *l = NULL;
+  size_t lsize;
+
+  if (database == NULL) err("something wrong with T_messages.txt");
+
+  /* check the value of VCD_NUM_FUNCTIONS */
+  if (VCD_NUM_FUNCTIONS != sizeof(eurecomFunctionsNames) / sizeof(char *))
+    err("VCD_NUM_FUNCTIONS (%d) must be equal to %zd",
+        VCD_NUM_FUNCTIONS,
+        sizeof(eurecomFunctionsNames) / sizeof(char *));
+
+  /* check the value of VCD_NUM_VARIABLES */
+  if (VCD_NUM_VARIABLES != sizeof(eurecomVariablesNames) / sizeof(char *))
+    err("VCD_NUM_VARIABLES (%d) must be equal to %zd",
+        VCD_NUM_VARIABLES,
+        sizeof(eurecomVariablesNames) / sizeof(char *));
+
+  number_of_events = number_of_ids(database);
+  if (number_of_events == 0) err("no event defined in T_messages.txt");
+
+  /* T_messages.txt ends with VCD VARIABLES followed by VCD FUNCTIONS
+   * followed by nothing.
+   * Let's check.
+   */
+
+  /* check VCD VARIABLES traces in T_messages.txt */
+  prefix = "VCD_VARIABLE_";
+  prefix_len = strlen(prefix);
+
+  for (i = 0; i < number_of_events; i++) {
+    name = event_name_from_id(database, i);
+    if (strncmp(name, prefix, prefix_len)) continue;
+    first_var = i;
+    break;
+  }
+  if (first_var == -1)
+    err("no VCD_VARIABLE_ found in T_messages.txt");
+  for (; i < number_of_events; i++) {
+    name = event_name_from_id(database, i);
+    if (strncmp(name, prefix, prefix_len)) break;
+  }
+  last_var = i-1;
+
+  /* check VCD FUNCTIONS traces in T_messages.txt */
+  if (i == number_of_events)
+    err("no VCD_FUNCTION_ found in T_messages.txt");
+
+  prefix = "VCD_FUNCTION_";
+  prefix_len = strlen(prefix);
+
+  first_fun = i;
+
+  name = event_name_from_id(database, i);
+  if (strncmp(name, prefix, prefix_len))
+    err("last VCD_VARIABLE_ not followed by a VCD_FUNCTION_ in T_messages.txt");
+
+  for (; i < number_of_events; i++) {
+    name = event_name_from_id(database, i);
+    if (strncmp(name, prefix, prefix_len)) break;
+  }
+
+  if (i != number_of_events)
+    err("T_messages.txt does not end with a VCD_FUNCTION_ trace");
+
+  last_fun = i-1;
+
+  if (first_var != (unsigned)VCD_FIRST_VARIABLE)
+    err("VCD_FIRST_VARIABLE is not correct in T_defs.h");
+  if (first_fun != (unsigned)VCD_FIRST_FUNCTION)
+    err("VCD_FIRST_FUNCTION is not correct in T_defs.h");
+  if (last_var-first_var+1 != VCD_NUM_VARIABLES)
+    err("VCD_NUM_VARIABLES is not correct in T_defs.h");
+  if (last_fun-first_fun+1 != VCD_NUM_FUNCTIONS)
+    err("VCD_NUM_FUNCTIONS is not correct in T_defs.h");
+
+  /* check that VCD_NAME is identical to
+   * eurecomVariablesNames[x]/eurecomFunctionsNames[x]
+   */
+  prefix = "VCD_VARIABLE_";
+  prefix_len = strlen(prefix);
+
+  for (i = 0; i < number_of_events; i++) {
+    name = event_name_from_id(database, i);
+    if (strncmp(name, prefix, prefix_len)) continue;
+    vcd_name = event_vcd_name_from_id(database, i);
+    if (vcd_name == NULL)
+      err("%s has no VCD_NAME in T_messages.txt", name);
+    if (strcmp(vcd_name, eurecomVariablesNames[i - first_var]))
+      err("%s has a wrong VCD_NAME in T_messages.txt", name);
+  }
+
+  prefix = "VCD_FUNCTION_";
+  prefix_len = strlen(prefix);
+
+  for (i = 0; i < number_of_events; i++) {
+    name = event_name_from_id(database, i);
+    if (strncmp(name, prefix, prefix_len)) continue;
+    vcd_name = event_vcd_name_from_id(database, i);
+    if (vcd_name == NULL)
+      err("%s has no VCD_NAME in T_messages.txt", name);
+    if (strcmp(vcd_name, eurecomFunctionsNames[i - first_fun]))
+      err("%s has a wrong VCD_NAME in T_messages.txt", name);
+  }
+
+  /* check IDs - these checks are difficult because we parse
+   * common/utils/LOG/vcd_signal_dumper.h which is expected to
+   * be formatted as is:
+   * - define vcd_signal_dump_variables then vcd_signal_dump_functions
+   * - one VCD_XXXX per line starting with two spaces
+   *   followed by ',' or '=' with no space in between
+   * - no #ifdef / #if is taken into account
+   * - we require VCD_SIGNAL_DUMPER_VARIABLES_END and
+   *   VCD_SIGNAL_DUMPER_FUNCTIONS_END at the end of each array,
+   *   each on a line of its own with two spaces before and nothing after.
+   *
+   * If these checks fail, consider formatting
+   * common/utils/LOG/vcd_signal_dumper.h as expected here, if
+   * it makes sense of course. Otherwise, change the code below.
+   *
+   * In common/utils/LOG/vcd_signal_dumper.h a valid name is
+   * either VCD_SIGNAL_DUMPER_VARIABLES_ABC or
+   * VCD_SIGNAL_DUMPER_FUNCTIONS_XYZ
+   * and in T_messages.txt the corresponding name has to be
+   * VCD_VARIABLE_ABC or VCD_FUNCTION_XYZ
+   */
+  i = first_var;
+  in = fopen("../LOG/vcd_signal_dumper.h", "r");
+  if (in == NULL) err("could not open ../LOG/vcd_signal_dumper.h");
+  while (1) {
+    char *x = "  VCD_SIGNAL_DUMPER_VARIABLES_";
+    ssize_t r;
+    free(l);
+    l = NULL;
+    lsize = 0;
+    r = getline(&l, &lsize, in);
+    if (r == -1) break;
+    if (!strcmp(l, "  VCD_SIGNAL_DUMPER_VARIABLES_END\n")) break;
+    /* remove ',' or '=' if found */
+    { char *s=l; while (*s) { if (*s==','||*s=='=') { *s=0; break; } s++; } }
+    if (strncmp(l, x, strlen(x))) continue;
+    if (!(i >= first_var && i <= last_var))
+      err("T_messages.txt is not correct with respect to VCD VARIABLES");
+    name = event_name_from_id(database, i);
+    if (strcmp(l+strlen(x), name+strlen("VCD_VARIABLE_")))
+      err("%s is not correct in T_messages.txt", name);
+    i++;
+  }
+  if (i != last_var + 1) err("VCD VARIABLES wrong in T_messages.txt");
+  while (1) {
+    char *x = "  VCD_SIGNAL_DUMPER_FUNCTIONS_";
+    ssize_t r;
+    free(l);
+    l = NULL;
+    lsize = 0;
+    r = getline(&l, &lsize, in);
+    if (r == -1) break;
+    if (!strcmp(l, "  VCD_SIGNAL_DUMPER_FUNCTIONS_END\n")) break;
+    /* remove ',' or '=' if found */
+    { char *s=l; while (*s) { if (*s==','||*s=='=') { *s=0; break; } s++; } }
+    if (strncmp(l, x, strlen(x))) continue;
+    if (!(i >= first_fun && i <= last_fun))
+      err("T_messages.txt is not correct with respect to VCD FUNCTIONS");
+    name = event_name_from_id(database, i);
+    if (strcmp(l+strlen(x), name+strlen("VCD_FUNCTION_")))
+      err("%s is not correct in T_messages.txt", name);
+    i++;
+  }
+  fclose(in);
+  if (i != last_fun + 1) err("VCD FUNCTIONS wrong in T_messages.txt");
+
+  return 0;
+}

common/utils/T/genids.c

@@ -14,21 +14,21 @@ int cmp(const void *p1, const void *p2)
 }
 
 /* return 1 if s was not already known, 0 if it was */
-int new_unique_id(char *s)
+int new_unique_id(char *s, char *input_file)
 {
   if (unique_ids_size)
   if (bsearch(&s, unique_ids, unique_ids_size, sizeof(char *), cmp) != NULL) {
-    printf("FATAL: ID %s is not unique\n", s);
+    printf("error: ID %s is not unique in %s\n", s, input_file);
     return 0;
   }
   if (unique_ids_size == unique_ids_maxsize) {
     unique_ids_maxsize += 256;
     unique_ids = realloc(unique_ids, unique_ids_maxsize * sizeof(char *));
-    if (unique_ids == NULL) { printf("out of memory\n"); abort(); }
+    if (unique_ids == NULL) { printf("erorr: out of memory\n"); abort(); }
   }
   unique_ids[unique_ids_size] = strdup(s);
   if (unique_ids[unique_ids_size] == NULL)
-    { printf("out of memory\n"); abort(); }
+    { printf("erorr: out of memory\n"); abort(); }
   unique_ids_size++;
   qsort(unique_ids, unique_ids_size, sizeof(char *), cmp);
   return 1;
@@ -43,7 +43,8 @@ void putname(int c)
   if (bufname_size == bufname_maxsize) {
     bufname_maxsize += 256;
     bufname = realloc(bufname, bufname_maxsize);
-    if (bufname == NULL) { printf("memory allocation error\n"); exit(1); }
+    if (bufname == NULL)
+      { printf("erorr: memory allocation error\n"); exit(1); }
   }
   bufname[bufname_size] = c;
   bufname_size++;
@@ -58,7 +59,8 @@ void putvalue(int c)
   if (bufvalue_size == bufvalue_maxsize) {
     bufvalue_maxsize += 256;
     bufvalue = realloc(bufvalue, bufvalue_maxsize);
-    if (bufvalue == NULL) { printf("memory allocation error\n"); exit(1); }
+    if (bufvalue == NULL)
+      { printf("error: memory allocation error\n"); exit(1); }
   }
   bufvalue[bufvalue_size] = c;
   bufvalue_size++;
@@ -119,7 +121,7 @@ int main(int n, char **v)
   char *in_name;
   char *out_name;
 
-  if (n != 3) { printf("gimme <source> <dest>\n"); exit(1); }
+  if (n != 3) { printf("error: gimme <source> <dest>\n"); exit(1); }
 
   n = 0;
 
@@ -134,14 +136,13 @@ int main(int n, char **v)
   while (1) {
     get_line(in, &name, &value);
     if (name == NULL) break;
-    printf("name '%s' value '%s'\n", name, value);
     if (isspace(value[strlen(value)-1])) {
-      printf("bad value '%s' (no space at the end please!)\n", value);
+      printf("error: bad value '%s' (no space at the end please!)\n", value);
       unlink(out_name);
       exit(1);
     }
     if (!strcmp(name, "ID")) {
-      if (!new_unique_id(value)) { unlink(out_name); exit(1); }
+      if (!new_unique_id(value, in_name)) { unlink(out_name); exit(1); }
       fprintf(out, "#define T_%s T_ID(%d)\n", value, n);
       n++;
     }

common/utils/T/local_tracer.c

@@ -337,54 +337,34 @@ static void forward(void *_forwarder, char *buf, int size)
 
 static void wait_message(void)
 {
-  while (T_local_cache[T_busylist_head].busy == 0) usleep(1000);
-}
-
-static void init_shm(char *shm_file)
-{
-  int i;
-  int s = shm_open(shm_file, O_RDWR | O_CREAT /*| O_SYNC*/, 0666);
-  if (s == -1) { perror(shm_file); abort(); }
-  if (ftruncate(s, T_CACHE_SIZE * sizeof(T_cache_t)))
-    { perror(shm_file); abort(); }
-  T_local_cache = mmap(NULL, T_CACHE_SIZE * sizeof(T_cache_t),
-                       PROT_READ | PROT_WRITE, MAP_SHARED, s, 0);
-  if (T_local_cache == MAP_FAILED)
-    { perror(shm_file); abort(); }
-  close(s);
-
-  /* let's garbage the memory to catch some potential problems
-   * (think multiprocessor sync issues, barriers, etc.)
-   */
-  memset(T_local_cache, 0x55, T_CACHE_SIZE * sizeof(T_cache_t));
-  for (i = 0; i < T_CACHE_SIZE; i++) T_local_cache[i].busy = 0;
+  while ((T_local_cache[T_busylist_head].busy & 0x02) == 0) usleep(1000);
 }
 
 void T_local_tracer_main(int remote_port, int wait_for_tracer,
-    int local_socket, char *shm_file)
+    int local_socket, void *shm_array)
 {
   int s;
   int port = remote_port;
   int dont_wait = wait_for_tracer ? 0 : 1;
   void *f;
-  printf("local tracer starting\n");
+
   /* write on a socket fails if the other end is closed and we get SIGPIPE */
-  if (signal(SIGPIPE, SIG_IGN) == SIG_ERR){
+  if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
        printf("local tracer received SIGPIPE\n");
        abort();
-   }
+  }
+
+  T_local_cache = shm_array;
 
-  init_shm(shm_file);
   s = local_socket;
-  printf("local tracer starting step 2\n");
+
   if (dont_wait) {
     char t = 2;
-  printf("local tracer in no wait mode \n");
     if (write(s, &t, 1) != 1) abort();
   }
-  printf("local tracer starting step 3\n");
+
   f = forwarder(port, s);
-  printf("local tracer main loop.... \n");
+
   /* read messages */
   while (1) {
     wait_message();

common/utils/T/tracer/Makefile

@@ -7,7 +7,7 @@ LIBS=-lm
 XLIBS=-lX11 -lpng -lXft
 
 all: record replay extract_config textlog enb ue vcd macpdu2wireshark \
-     extract_input_subframe extract_output_subframe to_vcd extract
+     extract_input_subframe extract_output_subframe to_vcd extract multi
 
 record: utils.o record.o database.o config.o
 	$(CC) $(CFLAGS) -o record $^ $(LIBS)
@@ -57,19 +57,22 @@ macpdu2wireshark: macpdu2wireshark.o database.o utils.o handler.o event.o \
                   config.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
 
+multi: multi.o utils.o database.o config.o
+	$(CC) $(CFLAGS) -o multi $^ $(LIBS)
+
 .PHONY: all gui/gui.a view/view.a logger/logger.a filter/filter.a
 
 gui/gui.a:
-	cd gui && make
+	cd gui && $(MAKE)
 
 view/view.a:
-	cd view && make
+	cd view && $(MAKE)
 
 logger/logger.a:
-	cd logger && make
+	cd logger && $(MAKE)
 
 filter/filter.a:
-	cd filter && make
+	cd filter && $(MAKE)
 
 %.o: %.c
 	$(CC) $(CFLAGS) -c -o $@ $<
@@ -77,9 +80,9 @@ filter/filter.a:
 clean:
 	rm -f *.o core tracer_remote textlog enb ue vcd record replay
 	rm -f extract_config macpdu2wireshark extract_input_subframe
-	rm -f extract_output_subframe to_vcd extract
-	cd gui && make clean
-	cd view && make clean
-	cd logger && make clean
-	cd filter && make clean
-	cd hacks && make clean
+	rm -f extract_output_subframe to_vcd extract multi
+	cd gui && $(MAKE) clean
+	cd view && $(MAKE) clean
+	cd logger && $(MAKE) clean
+	cd filter && $(MAKE) clean
+	cd hacks && $(MAKE) clean

common/utils/T/tracer/config.c

@@ -60,3 +60,9 @@ void verify_config(void)
     abort();
   }
 }
+
+void get_local_config(char **txt, int *len)
+{
+  *txt = local;
+  *len = local_size;
+}

common/utils/T/tracer/config.h

@@ -5,5 +5,6 @@ void clear_remote_config(void);
 void append_received_config_chunk(char *buf, int length);
 void load_config_file(char *filename);
 void verify_config(void);
+void get_local_config(char **txt, int *len);
 
 #endif /* _CONFIG_H_ */

common/utils/T/tracer/database.c

@@ -13,6 +13,7 @@ typedef struct {
   char **arg_type;
   char **arg_name;
   int  asize;
+  char *vcd_name;
   int  id;
 } id;
 
@@ -138,6 +139,7 @@ id *add_id(database *r, char *idname, int i)
   r->i[r->isize].arg_type = NULL;
   r->i[r->isize].arg_name = NULL;
   r->i[r->isize].asize = 0;
+  r->i[r->isize].vcd_name = NULL;
   r->i[r->isize].id = i;
   r->isize++;
   qsort(r->i, r->isize, sizeof(id), id_cmp);
@@ -224,6 +226,12 @@ void add_desc(id *i, char *desc)
   i->desc = strdup(desc); if (i->desc == NULL) abort();
 }
 
+void add_vcd_name(id *i, char *vcd_name)
+{
+  if (i == NULL) {printf("ERROR: VCD_NAME line before ID line\n");exit(1);}
+  i->vcd_name = strdup(vcd_name); if (i->vcd_name == NULL) abort();
+}
+
 char *format_get_next_token(char **cur)
 {
   char *start;
@@ -320,6 +328,7 @@ void *parse_database(char *filename)
     if (!strcmp(name, "GROUP")) add_groups(r, last_id, value);
     if (!strcmp(name, "DESC")) add_desc(last_id, value);
     if (!strcmp(name, "FORMAT")) add_format(last_id, value);
+    if (!strcmp(name, "VCD_NAME")) add_vcd_name(last_id, value);
   }
 
   fclose(in);
@@ -424,6 +433,12 @@ char *event_name_from_id(void *_database, int id)
   return d->i[d->id_to_pos[id]].name;
 }
 
+char *event_vcd_name_from_id(void *_database, int id)
+{
+  database *d = _database;
+  return d->i[d->id_to_pos[id]].vcd_name;
+}
+
 int event_id_from_name(void *_database, char *name)
 {
   database *d = _database;

common/utils/T/tracer/database.h

@@ -8,6 +8,7 @@ void list_ids(void *database);
 void list_groups(void *database);
 void on_off(void *d, char *item, int *a, int onoff);
 char *event_name_from_id(void *database, int id);
+char *event_vcd_name_from_id(void *_database, int id);
 int event_id_from_name(void *database, char *name);
 int number_of_ids(void *database);
 int database_get_ids(void *database, char ***ids);

common/utils/T/tracer/enb.c

@@ -878,6 +878,7 @@ int main(int n, char **v)
 
 restart:
   clear_remote_config();
+  if (enb_data.socket != -1) close(enb_data.socket);
   enb_data.socket = connect_to(ip, port);
 
   /* send the first message - activate selected traces */

common/utils/T/tracer/to_vcd.c

@@ -12,7 +12,14 @@
 #include "logger/logger.h"
 #include "view/view.h"
 
+enum var_type {
+  DEFAULT,
+  VCD_FUNCTION,
+  VCD_VARIABLE
+};
+
 typedef struct {
+  enum var_type type;
   char *event;
   char *arg;
   char *vcd_name;
@@ -44,16 +51,39 @@ void vcd_write_header(vcd_vars *v, int n)
 "$version\n"
 "  to_vcd\n"
 "$end\n"
-"$timescale 1ns $end\n"
+"$timescale 1ns $end\n") <= 0) abort();
+
+  if (fprintf(out,
 "$scope module logic $end\n") <= 0) abort();
+  for (i = 0; i < n; i++)
+    if (v[i].type == DEFAULT)
+      if (fprintf(out, "$var wire %d %s %s $end\n",
+             v[i].boolean ? 1 : 64,
+             v[i].vcd_name, v[i].vcd_name) <= 0) abort();
+  if (fprintf(out,
+"$upscope $end\n") <= 0) abort();
 
+  if (fprintf(out,
+"$scope module functions $end\n") <= 0) abort();
+  for (i = 0; i < n; i++)
+    if (v[i].type == VCD_FUNCTION)
+      if (fprintf(out, "$var wire %d %s %s $end\n",
+             v[i].boolean ? 1 : 64,
+             v[i].vcd_name, v[i].vcd_name) <= 0) abort();
+  if (fprintf(out,
+"$upscope $end\n") <= 0) abort();
+
+  if (fprintf(out,
+"$scope module variables $end\n") <= 0) abort();
   for (i = 0; i < n; i++)
-    if (fprintf(out, "$var wire %d %s %s $end\n",
-           v[i].boolean ? 1 : 64,
-           v[i].vcd_name, v[i].vcd_name) <= 0) abort();
+    if (v[i].type == VCD_VARIABLE)
+      if (fprintf(out, "$var wire %d %s %s $end\n",
+             v[i].boolean ? 1 : 64,
+             v[i].vcd_name, v[i].vcd_name) <= 0) abort();
+  if (fprintf(out,
+"$upscope $end\n") <= 0) abort();
 
   if (fprintf(out,
-"$upscope $end\n"
 "$enddefinitions $end\n"
 "$dumpvars\n") <= 0) abort();
 
@@ -194,12 +224,13 @@ void force_stop(int x)
 }
 
 vcd_vars *add_var(vcd_vars *vars, int nvars,
-    char *event, char *arg, char *vcd_name, int is_boolean)
+    char *event, char *arg, char *vcd_name, int is_boolean, enum var_type t)
 {
   if (nvars % 64 == 0) {
     vars = realloc(vars, (nvars+64) * sizeof(vcd_vars));
     if (vars == NULL) abort();
   }
+  vars[nvars].type = t;
   vars[nvars].event = event;
   vars[nvars].arg = arg;
   vars[nvars].vcd_name = vcd_name;
@@ -240,7 +271,7 @@ int main(int n, char **v)
       char *event    = v[++i];
       char *arg      = v[++i];
       char *vcd_name = v[++i];
-      vars = add_var(vars, nvars, event, arg, vcd_name, 1);
+      vars = add_var(vars, nvars, event, arg, vcd_name, 1, DEFAULT);
       nvars++;
       continue;
     }
@@ -248,7 +279,7 @@ int main(int n, char **v)
       char *event    = v[++i];
       char *arg      = v[++i];
       char *vcd_name = v[++i];
-      vars = add_var(vars, nvars, event, arg, vcd_name, 0);
+      vars = add_var(vars, nvars, event, arg, vcd_name, 0, DEFAULT);
       nvars++;
       continue;
     }
@@ -283,20 +314,30 @@ int main(int n, char **v)
     /* activate all VCD traces */
     for (i = 0; i < number_of_events; i++) {
       int is_boolean;
+      enum var_type type;
       int prefix_length;
       char *name = event_name_from_id(database, i);
+      char *vcd_name;
       char *var_prefix = "VCD_VARIABLE_";
       char *fun_prefix = "VCD_FUNCTION_";
       if (!strncmp(name, var_prefix, strlen(var_prefix))) {
         prefix_length = strlen(var_prefix);
         is_boolean = 0;
+        type = VCD_VARIABLE;
       } else if (!strncmp(name, fun_prefix, strlen(fun_prefix))) {
         prefix_length = strlen(fun_prefix);
         is_boolean = 1;
+        type = VCD_FUNCTION;
       } else
         continue;
+      vcd_name = event_vcd_name_from_id(database, i);
+      if (vcd_name == NULL) {
+        vcd_name = name+prefix_length;
+        printf("WARNING: ID %s does not define VCD_NAME in the file %s, using %s\n",
+              name, database_filename, vcd_name);
+      }
       vars = add_var(vars, nvars,
-          name, "value", name+prefix_length, is_boolean);
+          name, "value", vcd_name, is_boolean, type);
       nvars++;
     }
   }

common/utils/T/tracer/ue.c

@@ -857,6 +857,7 @@ int main(int n, char **v)
 
 restart:
   clear_remote_config();
+  if (ue_data.socket != -1) close(ue_data.socket);
   ue_data.socket = connect_to(ip, port);
 
   /* send the first message - activate selected traces */

common/utils/T/tracer/utils.c

@@ -79,6 +79,36 @@ list *list_append(list *l, void *data)
 /* socket                                                                   */
 /****************************************************************************/
 
+int create_listen_socket(char *addr, int port)
+{
+  struct sockaddr_in a;
+  int s;
+  int v;
+
+  s = socket(AF_INET, SOCK_STREAM, 0);
+  if (s == -1) { perror("socket"); exit(1); }
+  v = 1;
+  if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(int)))
+    { perror("setsockopt"); exit(1); }
+
+  a.sin_family = AF_INET;
+  a.sin_port = htons(port);
+  a.sin_addr.s_addr = inet_addr(addr);
+
+  if (bind(s, (struct sockaddr *)&a, sizeof(a))) { perror("bind"); exit(1); }
+  if (listen(s, 5)) { perror("listen"); exit(1); }
+
+  return s;
+}
+
+int socket_accept(int s)
+{
+  struct sockaddr_in a;
+  socklen_t alen;
+  alen = sizeof(a);
+  return accept(s, (struct sockaddr *)&a, &alen);
+}
+
 int socket_send(int socket, void *buffer, int size)
 {
   char *x = buffer;
@@ -94,26 +124,13 @@ int socket_send(int socket, void *buffer, int size)
 
 int get_connection(char *addr, int port)
 {
-  struct sockaddr_in a;
-  socklen_t alen;
   int s, t;
 
   printf("waiting for connection on %s:%d\n", addr, port);
 
-  s = socket(AF_INET, SOCK_STREAM, 0);
-  if (s == -1) { perror("socket"); exit(1); }
-  t = 1;
-  if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &t, sizeof(int)))
-    { perror("setsockopt"); exit(1); }
-
-  a.sin_family = AF_INET;
-  a.sin_port = htons(port);
-  a.sin_addr.s_addr = inet_addr(addr);
+  s = create_listen_socket(addr, port);
 
-  if (bind(s, (struct sockaddr *)&a, sizeof(a))) { perror("bind"); exit(1); }
-  if (listen(s, 5)) { perror("bind"); exit(1); }
-  alen = sizeof(a);
-  t = accept(s, (struct sockaddr *)&a, &alen);
+  t = socket_accept(s);
   if (t == -1) { perror("accept"); exit(1); }
   close(s);
 
@@ -137,14 +154,11 @@ int fullread(int fd, void *_buf, int count)
   return ret;
 }
 
-int connect_to(char *addr, int port)
+int try_connect_to(char *addr, int port)
 {
   int s;
   struct sockaddr_in a;
 
-  printf("connecting to %s:%d\n", addr, port);
-
-again:
   s = socket(AF_INET, SOCK_STREAM, 0);
   if (s == -1) { perror("socket"); exit(1); }
 
@@ -155,6 +169,21 @@ again:
   if (connect(s, (struct sockaddr *)&a, sizeof(a)) == -1) {
     perror("connect");
     close(s);
+    return -1;
+  }
+
+  return s;
+}
+
+int connect_to(char *addr, int port)
+{
+  int s;
+
+  printf("connecting to %s:%d\n", addr, port);
+
+again:
+  s = try_connect_to(addr, port);
+  if (s == -1) {
     printf("trying again in 1s\n");
     sleep(1);
     goto again;

common/utils/T/tracer/utils.h

@@ -24,11 +24,14 @@ list *list_append(list *l, void *data);
 #define DEFAULT_REMOTE_IP "127.0.0.1"
 #define DEFAULT_REMOTE_PORT 2021
 
+int create_listen_socket(char *addr, int port);
+int socket_accept(int s);
 /* socket_send: return 0 if okay, -1 on error */
 int socket_send(int socket, void *buffer, int size);
 int get_connection(char *addr, int port);
 /* fullread: return length read if okay (that is: 'count'), -1 on error */
 int fullread(int fd, void *_buf, int count);
+int try_connect_to(char *addr, int port);
 int connect_to(char *addr, int port);
 
 /****************************************************************************/

common/utils/itti/intertask_interface.c

@@ -745,7 +745,7 @@ void itti_exit_task(void)
 
 #if defined(OAI_EMU) || defined(RTAI)
   if (task_id > TASK_UNKNOWN) {
-    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLE_ITTI_RECV_MSG,
+    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_ITTI_RECV_MSG,
                                             __sync_and_and_fetch (&itti_desc.vcd_receive_msg, ~(1L << task_id)));
   }
 #endif