X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/6868450e94e947388bdf6700f484f84d91bc0e04..42e69c5d43675587aae0bb367b8bf0746f6be13a:/src/instr/instr_interface.c

diff --git a/src/instr/instr_interface.c b/src/instr/instr_interface.c
index ba968314ce..3c06b95d47 100644
--- a/src/instr/instr_interface.c
+++ b/src/instr/instr_interface.c
@@ -21,6 +21,25 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY (instr_api, instr, "API");
 
 xbt_dict_t created_categories = NULL;
 xbt_dict_t declared_marks = NULL;
+xbt_dict_t user_host_variables = NULL;
+xbt_dict_t user_vm_variables = NULL;
+xbt_dict_t user_link_variables = NULL;
+extern xbt_dict_t trivaNodeTypes;
+extern xbt_dict_t trivaEdgeTypes;
+
+static xbt_dynar_t instr_dict_to_dynar (xbt_dict_t filter)
+{
+  if (!TRACE_is_enabled()) return NULL;
+  if (!TRACE_needs_platform()) return NULL;
+
+  xbt_dynar_t ret = xbt_dynar_new (sizeof(char*), &xbt_free_ref);
+  xbt_dict_cursor_t cursor = NULL;
+  char *name, *value;
+  xbt_dict_foreach(filter, cursor, name, value) {
+    xbt_dynar_push_as (ret, char*, xbt_strdup(name));
+  }
+  return ret;
+}
 
 /** \ingroup TRACE_category
  *  \brief Declare a new category with a random color.
@@ -35,7 +54,7 @@ xbt_dict_t declared_marks = NULL;
  *  that is being declared is random. This function has no effect
  *  if a category with the same name has been already declared.
  *
- * See \ref tracing_tracing for details on how to trace
+ * See \ref tracing for details on how to trace
  * the (categorized) resource utilization.
  *
  *  \param category The name of the new tracing category to be created.
@@ -56,11 +75,11 @@ void TRACE_category(const char *category)
  *  can be specified using "0.7 0.7 0.7" as color. This function has
  *  no effect if a category with the same name has been already declared.
  *
- * See \ref tracing_tracing for details on how to trace
+ * See \ref tracing for details on how to trace
  * the (categorized) resource utilization.
  *
  *  \param category The name of the new tracing category to be created.
- *  \param color The color of the category (see \ref tracing_tracing to
+ *  \param color The color of the category (see \ref tracing to
  *  know how to correctly specify the color)
  *
  *  \see MSG_task_set_category, SD_task_set_category
@@ -105,7 +124,7 @@ void TRACE_category_with_color (const char *category, const char *color)
  * This function should be used to get categories that were already
  * declared with #TRACE_category or with #TRACE_category_with_color.
  *
- * See \ref tracing_tracing for details on how to trace
+ * See \ref tracing for details on how to trace
  * the (categorized) resource utilization.
  *
  * \return A dynar with the declared categories, must be freed with xbt_dynar_free.
@@ -117,13 +136,7 @@ xbt_dynar_t TRACE_get_categories (void)
   if (!TRACE_is_enabled()) return NULL;
   if (!TRACE_categorized()) return NULL;
 
-  xbt_dynar_t ret = xbt_dynar_new (sizeof(char*), &xbt_free_ref);
-  xbt_dict_cursor_t cursor = NULL;
-  char *name, *value;
-  xbt_dict_foreach(created_categories, cursor, name, value) {
-    xbt_dynar_push_as (ret, char*, xbt_strdup(name));
-  }
-  return ret;
+  return instr_dict_to_dynar (created_categories);
 }
 
 /** \ingroup TRACE_mark
@@ -144,15 +157,81 @@ void TRACE_declare_mark(const char *mark_type)
   /* safe switch */
   if (!TRACE_is_enabled()) return;
 
-  if (!mark_type) return;
+  /* if platform is not traced, we don't allow marks */
+  if (!TRACE_needs_platform()) return;
+
+  if (!mark_type) THROWF (tracing_error, 1, "mark_type is NULL");
 
   //check if mark_type is already declared
   char *created = xbt_dict_get_or_null(declared_marks, mark_type);
-  if (created) return;
-  xbt_dict_set (declared_marks, mark_type, xbt_strdup("1"), NULL);
+  if (created) {
+    THROWF (tracing_error, 1, "mark_type with name (%s) is already declared", mark_type);
+  }
 
   XBT_DEBUG("MARK,declare %s", mark_type);
-  PJ_type_event_new(mark_type, NULL, PJ_type_get_root());
+  PJ_type_event_new(mark_type, PJ_type_get_root());
+  xbt_dict_set (declared_marks, mark_type, xbt_strdup("1"), NULL);
+}
+
+/** \ingroup TRACE_mark
+ * \brief Declare a new colored value for a previously declared mark type.
+ *
+ * This function declares a new colored value for a Paje event
+ * type in the trace file that can be used by
+ * simulators to declare application-level
+ * marks. This function is independent of
+ * which API is used in SimGrid. The color needs to be
+ * a string with three numbers separated by spaces in the range [0,1].
+ * A light-gray color can be specified using "0.7 0.7 0.7" as color.
+ * If a NULL color is provided, the color used will be white ("1 1 1").
+ *
+ * \param mark_type The name of the new type.
+ * \param mark_value The name of the new value for this type.
+ * \param mark_color The color of the new value for this type.
+ *
+ * \see TRACE_mark
+ */
+void TRACE_declare_mark_value_with_color (const char *mark_type, const char *mark_value, const char *mark_color)
+{
+  /* safe switch */
+  if (!TRACE_is_enabled()) return;
+
+  /* if platform is not traced, we don't allow marks */
+  if (!TRACE_needs_platform()) return;
+
+  if (!mark_type) THROWF (tracing_error, 1, "mark_type is NULL");
+  if (!mark_value) THROWF (tracing_error, 1, "mark_value is NULL");
+
+  type_t type = PJ_type_get (mark_type, PJ_type_get_root());
+  if (!type){
+    THROWF (tracing_error, 1, "mark_type with name (%s) is not declared", mark_type);
+  }
+
+  char white[INSTR_DEFAULT_STR_SIZE] = "1.0 1.0 1.0";
+  if (!mark_color) mark_color = white;
+
+  XBT_DEBUG("MARK,declare_value %s %s %s", mark_type, mark_value, mark_color);
+  PJ_value_new (mark_value, mark_color, type);
+}
+
+/** \ingroup TRACE_mark
+ * \brief Declare a new value for a previously declared mark type.
+ *
+ * This function declares a new value for a Paje event
+ * type in the trace file that can be used by
+ * simulators to declare application-level
+ * marks. This function is independent of
+ * which API is used in SimGrid. Calling this function is the same
+ * as calling \ref TRACE_declare_mark_value_with_color with a NULL color.
+ *
+ * \param mark_type The name of the new type.
+ * \param mark_value The name of the new value for this type.
+ *
+ * \see TRACE_mark
+ */
+void TRACE_declare_mark_value (const char *mark_type, const char *mark_value)
+{
+  TRACE_declare_mark_value_with_color (mark_type, mark_value, NULL);
 }
 
 /**
@@ -178,21 +257,20 @@ void TRACE_mark(const char *mark_type, const char *mark_value)
   /* safe switch */
   if (!TRACE_is_enabled()) return;
 
-  if (!mark_type || !mark_value) return;
+  /* if platform is not traced, we don't allow marks */
+  if (!TRACE_needs_platform()) return;
 
-  //check if mark_type is already declared
-  char *created = xbt_dict_get_or_null(declared_marks, mark_type);
-  if (created) return;
+  if (!mark_type) THROWF (tracing_error, 1, "mark_type is NULL");
+  if (!mark_value) THROWF (tracing_error, 1, "mark_value is NULL");
 
-  XBT_DEBUG("MARK %s %s", mark_type, mark_value);
+  //check if mark_type is already declared
   type_t type = PJ_type_get (mark_type, PJ_type_get_root());
-  if (type == NULL){
-    THROWF (tracing_error, 1, "mark_type with name (%s) not declared before", mark_type);
+  if (!type){
+    THROWF (tracing_error, 1, "mark_type with name (%s) is not declared", mark_type);
   }
+
   val_t value = PJ_value_get (mark_value, type);
-  if (value == NULL){
-    value = PJ_value_new (mark_value, NULL, type);
-  }
+  XBT_DEBUG("MARK %s %s", mark_type, mark_value);
   new_pajeNewEvent (MSG_get_clock(), PJ_container_get_root(), type, value);
 }
 
@@ -209,13 +287,7 @@ xbt_dynar_t TRACE_get_marks (void)
 {
   if (!TRACE_is_enabled()) return NULL;
 
-  xbt_dynar_t ret = xbt_dynar_new (sizeof(char*), &xbt_free_ref);
-  xbt_dict_cursor_t cursor = NULL;
-  char *name, *value;
-  xbt_dict_foreach(declared_marks, cursor, name, value) {
-    xbt_dynar_push_as (ret, char*, xbt_strdup(name));
-  }
-  return ret;
+  return instr_dict_to_dynar (declared_marks);
 }
 
 static void instr_user_variable(double time,
@@ -224,14 +296,31 @@ static void instr_user_variable(double time,
                          const char *father_type,
                          double value,
                          InstrUserVariable what,
-                         const char *color)
+                         const char *color,
+                         xbt_dict_t filter)
 {
   /* safe switch */
   if (!TRACE_is_enabled()) return;
 
-  /* if platform is not traced, we can't deal user variables */
+  /* if platform is not traced, we don't allow user variables */
   if (!TRACE_needs_platform()) return;
 
+  //check if variable is already declared
+  char *created = xbt_dict_get_or_null(filter, variable);
+  if (what == INSTR_US_DECLARE){
+    if (created){
+      //already declared
+      return;
+    }else{
+      xbt_dict_set (filter, variable, xbt_strdup("1"), NULL);
+    }
+  }else{
+    if (!created){
+      //not declared, ignore
+      return;
+    }
+  }
+
   char valuestr[100];
   snprintf(valuestr, 100, "%g", value);
 
@@ -275,12 +364,10 @@ static void instr_user_srcdst_variable(double time,
                               InstrUserVariable what)
 {
   xbt_dynar_t route=NULL;
-  network_element_t src_elm = xbt_lib_get_or_null(host_lib,src,ROUTING_HOST_LEVEL);
-  if(!src_elm) src_elm = xbt_lib_get_or_null(as_router_lib,src,ROUTING_ASR_LEVEL);
+  sg_routing_edge_t src_elm = sg_routing_edge_by_name_or_null(src);
   if(!src_elm) xbt_die("Element '%s' not found!",src);
 
-  network_element_t dst_elm = xbt_lib_get_or_null(host_lib,dst,ROUTING_HOST_LEVEL);
-  if(!dst_elm) dst_elm = xbt_lib_get_or_null(as_router_lib,dst,ROUTING_ASR_LEVEL);
+  sg_routing_edge_t dst_elm = sg_routing_edge_by_name_or_null(dst);
   if(!dst_elm) xbt_die("Element '%s' not found!",dst);
 
   routing_get_route_and_latency (src_elm, dst_elm, &route,NULL);
@@ -288,7 +375,7 @@ static void instr_user_srcdst_variable(double time,
   void *link;
   xbt_dynar_foreach (route, i, link) {
     char *link_name = ((link_CM02_t)link)->lmm_resource.generic_resource.name;
-    instr_user_variable (time, link_name, variable, father_type, value, what, NULL);
+    instr_user_variable (time, link_name, variable, father_type, value, what, NULL, user_link_variables);
   }
 }
 
@@ -320,6 +407,166 @@ int TRACE_platform_graph_export_graphviz (const char *filename)
  * into functions so the user can track them using gdb.
  */
 
+/* for VM variables */
+/** \ingroup TRACE_user_variables
+ *  \brief Declare a new user variable associated to VMs.
+ *
+ *  Declare a user variable that will be associated to VMs.
+ *  A user vm variable can be used to trace user variables
+ *  such as the number of tasks in a VM, the number of
+ *  clients in an application (for VMs), and so on. The color
+ *  associated to this new variable will be random.
+ *
+ *  \param variable The name of the new variable to be declared.
+ *
+ *  \see TRACE_vm_variable_declare_with_color
+ */
+void TRACE_vm_variable_declare (const char *variable)
+{
+  instr_user_variable(0, NULL, variable, "MSG_VM", 0, INSTR_US_DECLARE, NULL, user_vm_variables);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Declare a new user variable associated to VMs with a color.
+ *
+ *  Same as #TRACE_vm_variable_declare, but associated a color
+ *  to the newly created user host variable. The color needs to be
+ *  a string with three numbers separated by spaces in the range [0,1].
+ *  A light-gray color can be specified using "0.7 0.7 0.7" as color.
+ *
+ *  \param variable The name of the new variable to be declared.
+ *  \param color The color for the new variable.
+ *
+ */
+void TRACE_vm_variable_declare_with_color (const char *variable, const char *color)
+{
+   instr_user_variable(0, NULL, variable, "MSG_VM", 0, INSTR_US_DECLARE, color, user_vm_variables);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Set the value of a variable of a host.
+ *
+ *  \param vm The name of the VM to be considered.
+ *  \param variable The name of the variable to be considered.
+ *  \param value The new value of the variable.
+ *
+ *  \see TRACE_vm_variable_declare, TRACE_vm_variable_add, TRACE_vm_variable_sub
+ */
+void TRACE_vm_variable_set (const char *vm, const char *variable, double value)
+{
+
+  TRACE_vm_variable_set_with_time (MSG_get_clock(), vm, variable, value);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Add a value to a variable of a VM.
+ *
+ *  \param vm The name of the VM to be considered.
+ *  \param variable The name of the variable to be considered.
+ *  \param value The value to be added to the variable.
+ *
+ *  \see TRACE_vm_variable_declare, TRACE_vm_variable_set, TRACE_vm_variable_sub
+ */
+void TRACE_vm_variable_add (const char *vm, const char *variable, double value)
+{
+  TRACE_vm_variable_add_with_time (MSG_get_clock(), vm, variable, value);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Subtract a value from a variable of a VM.
+ *
+ *  \param vm The name of the vm to be considered.
+ *  \param variable The name of the variable to be considered.
+ *  \param value The value to be subtracted from the variable.
+ *
+ *  \see TRACE_vm_variable_declare, TRACE_vm_variable_set, TRACE_vm_variable_add
+ */
+void TRACE_vm_variable_sub (const char *vm, const char *variable, double value)
+{
+  TRACE_vm_variable_sub_with_time (MSG_get_clock(), vm, variable, value);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Set the value of a variable of a VM at a given timestamp.
+ *
+ *  Same as #TRACE_vm_variable_set, but let user specify
+ *  the time used to trace it. Users can specify a time that
+ *  is not the simulated clock time as defined by the core
+ *  simulator. This allows a fine-grain control of time
+ *  definition, but should be used with caution since the trace
+ *  can be inconsistent if resource utilization traces are also traced.
+ *
+ *  \param time The timestamp to be used to tag this change of value.
+ *  \param vm The name of the VM to be considered.
+ *  \param variable The name of the variable to be considered.
+ *  \param value The new value of the variable.
+ *
+ *  \see TRACE_vm_variable_declare, TRACE_vm_variable_add_with_time, TRACE_vm_variable_sub_with_time
+ */
+void TRACE_vm_variable_set_with_time (double time, const char *vm, const char *variable, double value)
+{
+  instr_user_variable(time, vm, variable, "MSG_VM", value, INSTR_US_SET, NULL, user_vm_variables);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Add a value to a variable of a VM at a given timestamp.
+ *
+ *  Same as #TRACE_vm_variable_add, but let user specify
+ *  the time used to trace it. Users can specify a time that
+ *  is not the simulated clock time as defined by the core
+ *  simulator. This allows a fine-grain control of time
+ *  definition, but should be used with caution since the trace
+ *  can be inconsistent if resource utilization traces are also traced.
+ *
+ *  \param time The timestamp to be used to tag this change of value.
+ *  \param vm The name of the VM to be considered.
+ *  \param variable The name of the variable to be considered.
+ *  \param value The value to be added to the variable.
+ *
+ *  \see TRACE_vm_variable_declare, TRACE_vm_variable_set_with_time, TRACE_vm_variable_sub_with_time
+ */
+void TRACE_vm_variable_add_with_time (double time, const char *vm, const char *variable, double value)
+{
+  instr_user_variable(time, vm, variable, "MSG_VM", value, INSTR_US_ADD, NULL, user_vm_variables);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Subtract a value from a variable of a VM at a given timestamp.
+ *
+ *  Same as #TRACE_vm_variable_sub, but let user specify
+ *  the time used to trace it. Users can specify a time that
+ *  is not the simulated clock time as defined by the core
+ *  simulator. This allows a fine-grain control of time
+ *  definition, but should be used with caution since the trace
+ *  can be inconsistent if resource utilization traces are also traced.
+ *
+ *  \param time The timestamp to be used to tag this change of value.
+ *  \param vm The name of the VM to be considered.
+ *  \param variable The name of the variable to be considered.
+ *  \param value The value to be subtracted from the variable.
+ *
+ *  \see TRACE_vm_variable_declare, TRACE_vm_variable_set_with_time, TRACE_vm_variable_add_with_time
+ */
+void TRACE_vm_variable_sub_with_time (double time, const char *vm, const char *variable, double value)
+{
+  instr_user_variable(time, vm, variable, "MSG_VM", value, INSTR_US_SUB, NULL, user_vm_variables);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Get declared user vm variables
+ *
+ * This function should be used to get VM variables that were already
+ * declared with #TRACE_vm_variable_declare or with #TRACE_vm_variable_declare_with_color.
+ *
+ * \return A dynar with the declared host variables, must be freed with xbt_dynar_free.
+ */
+xbt_dynar_t TRACE_get_vm_variables (void)
+{
+  return instr_dict_to_dynar (user_vm_variables);
+}
+
+
+
 /* for host variables */
 /** \ingroup TRACE_user_variables
  *  \brief Declare a new user variable associated to hosts.
@@ -336,7 +583,7 @@ int TRACE_platform_graph_export_graphviz (const char *filename)
  */
 void TRACE_host_variable_declare (const char *variable)
 {
-  instr_user_variable(0, NULL, variable, "HOST", 0, INSTR_US_DECLARE, NULL);
+  instr_user_variable(0, NULL, variable, "HOST", 0, INSTR_US_DECLARE, NULL, user_host_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -353,7 +600,7 @@ void TRACE_host_variable_declare (const char *variable)
  */
 void TRACE_host_variable_declare_with_color (const char *variable, const char *color)
 {
-  instr_user_variable(0, NULL, variable, "HOST", 0, INSTR_US_DECLARE, color);
+  instr_user_variable(0, NULL, variable, "HOST", 0, INSTR_US_DECLARE, color, user_host_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -417,7 +664,7 @@ void TRACE_host_variable_sub (const char *host, const char *variable, double val
  */
 void TRACE_host_variable_set_with_time (double time, const char *host, const char *variable, double value)
 {
-  instr_user_variable(time, host, variable, "HOST", value, INSTR_US_SET, NULL);
+  instr_user_variable(time, host, variable, "HOST", value, INSTR_US_SET, NULL, user_host_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -439,7 +686,7 @@ void TRACE_host_variable_set_with_time (double time, const char *host, const cha
  */
 void TRACE_host_variable_add_with_time (double time, const char *host, const char *variable, double value)
 {
-  instr_user_variable(time, host, variable, "HOST", value, INSTR_US_ADD, NULL);
+  instr_user_variable(time, host, variable, "HOST", value, INSTR_US_ADD, NULL, user_host_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -461,7 +708,20 @@ void TRACE_host_variable_add_with_time (double time, const char *host, const cha
  */
 void TRACE_host_variable_sub_with_time (double time, const char *host, const char *variable, double value)
 {
-  instr_user_variable(time, host, variable, "HOST", value, INSTR_US_SUB, NULL);
+  instr_user_variable(time, host, variable, "HOST", value, INSTR_US_SUB, NULL, user_host_variables);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Get declared user host variables
+ *
+ * This function should be used to get host variables that were already
+ * declared with #TRACE_host_variable_declare or with #TRACE_host_variable_declare_with_color.
+ *
+ * \return A dynar with the declared host variables, must be freed with xbt_dynar_free.
+ */
+xbt_dynar_t TRACE_get_host_variables (void)
+{
+  return instr_dict_to_dynar (user_host_variables);
 }
 
 /* for link variables */
@@ -480,7 +740,7 @@ void TRACE_host_variable_sub_with_time (double time, const char *host, const cha
  */
 void TRACE_link_variable_declare (const char *variable)
 {
-  instr_user_variable (0, NULL, variable, "LINK", 0, INSTR_US_DECLARE, NULL);
+  instr_user_variable (0, NULL, variable, "LINK", 0, INSTR_US_DECLARE, NULL, user_link_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -497,7 +757,7 @@ void TRACE_link_variable_declare (const char *variable)
  */
 void TRACE_link_variable_declare_with_color (const char *variable, const char *color)
 {
-  instr_user_variable (0, NULL, variable, "LINK", 0, INSTR_US_DECLARE, color);
+  instr_user_variable (0, NULL, variable, "LINK", 0, INSTR_US_DECLARE, color, user_link_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -561,7 +821,7 @@ void TRACE_link_variable_sub (const char *link, const char *variable, double val
  */
 void TRACE_link_variable_set_with_time (double time, const char *link, const char *variable, double value)
 {
-  instr_user_variable (time, link, variable, "LINK", value, INSTR_US_SET, NULL);
+  instr_user_variable (time, link, variable, "LINK", value, INSTR_US_SET, NULL, user_link_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -583,7 +843,7 @@ void TRACE_link_variable_set_with_time (double time, const char *link, const cha
  */
 void TRACE_link_variable_add_with_time (double time, const char *link, const char *variable, double value)
 {
-  instr_user_variable (time, link, variable, "LINK", value, INSTR_US_ADD, NULL);
+  instr_user_variable (time, link, variable, "LINK", value, INSTR_US_ADD, NULL, user_link_variables);
 }
 
 /** \ingroup TRACE_user_variables
@@ -605,7 +865,7 @@ void TRACE_link_variable_add_with_time (double time, const char *link, const cha
  */
 void TRACE_link_variable_sub_with_time (double time, const char *link, const char *variable, double value)
 {
-  instr_user_variable (time, link, variable, "LINK", value, INSTR_US_SUB, NULL);
+  instr_user_variable (time, link, variable, "LINK", value, INSTR_US_SUB, NULL, user_link_variables);
 }
 
 /* for link variables, but with src and dst used for get_route */
@@ -740,4 +1000,168 @@ void TRACE_link_srcdst_variable_sub_with_time (double time, const char *src, con
   instr_user_srcdst_variable (time, src, dst, variable, "LINK", value, INSTR_US_SUB);
 }
 
+/** \ingroup TRACE_user_variables
+ *  \brief Get declared user link variables
+ *
+ * This function should be used to get link variables that were already
+ * declared with #TRACE_link_variable_declare or with #TRACE_link_variable_declare_with_color.
+ *
+ * \return A dynar with the declared link variables, must be freed with xbt_dynar_free.
+ */
+xbt_dynar_t TRACE_get_link_variables (void)
+{
+  return instr_dict_to_dynar (user_link_variables);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Declare a new user state associated to hosts.
+ *
+ *  Declare a user state that will be associated to hosts.
+ *  A user host state can be used to trace application states.
+ *
+ *  \param state The name of the new state to be declared.
+ *
+ *  \see TRACE_host_state_declare_value
+ */
+void TRACE_host_state_declare (const char *state)
+{
+  instr_new_user_state_type("HOST", state);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Declare a new value for a user state associated to hosts.
+ *
+ *  Declare a value for a state. The color needs to be
+ *  a string with three numbers separated by spaces in the range [0,1].
+ *  A light-gray color can be specified using "0.7 0.7 0.7" as color.
+ *
+ *  \param state The name of the new state to be declared.
+ *  \param value The name of the value
+ *  \param color The color of the value
+ *
+ *  \see TRACE_host_state_declare
+ */
+void TRACE_host_state_declare_value (const char *state, const char *value, const char *color)
+{
+  instr_new_value_for_user_state_type (state, value, color);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Set the user state to the given value.
+ *
+ *  Change a user state previously declared to the given value.
+ *
+ *  \param host The name of the host to be considered.
+ *  \param state The name of the state previously declared.
+ *  \param value The new value of the state.
+ *
+ *  \see TRACE_host_state_declare, TRACE_host_push_state, TRACE_host_pop_state, TRACE_host_reset_state
+ */
+void TRACE_host_set_state (const char *host, const char *state, const char *value)
+{
+  container_t container = PJ_container_get(host);
+  type_t type = PJ_type_get (state, container->type);
+  val_t val = PJ_value_get_or_new (value, NULL, type); /* if user didn't declare a value with a color, user a NULL color */
+  new_pajeSetState(MSG_get_clock(), container, type, val);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Push a new value for a state of a given host.
+ *
+ *  Change a user state previously declared by pushing the new value to the state.
+ *
+ *  \param host The name of the host to be considered.
+ *  \param state The name of the state previously declared.
+ *  \param value The value to be pushed.
+ *
+ *  \see TRACE_host_state_declare, TRACE_host_set_state, TRACE_host_pop_state, TRACE_host_reset_state
+ */
+void TRACE_host_push_state (const char *host, const char *state, const char *value)
+{
+  container_t container = PJ_container_get(host);
+  type_t type = PJ_type_get (state, container->type);
+  val_t val = PJ_value_get_or_new (value, NULL, type); /* if user didn't declare a value with a color, user a NULL color */
+  new_pajePushState(MSG_get_clock(), container, type, val);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Pop the last value of a state of a given host.
+ *
+ *  Change a user state previously declared by removing the last value of the state.
+ *
+ *  \param host The name of the host to be considered.
+ *  \param state The name of the state to be popped.
+ *
+ *  \see TRACE_host_state_declare, TRACE_host_set_state, TRACE_host_push_state, TRACE_host_reset_state
+ */
+void TRACE_host_pop_state (const char *host, const char *state)
+{
+  container_t container = PJ_container_get(host);
+  type_t type = PJ_type_get (state, container->type);
+  new_pajePopState(MSG_get_clock(), container, type);
+}
+
+/** \ingroup TRACE_user_variables
+ *  \brief Reset the state of a given host.
+ *
+ *  Clear all previous values of a user state.
+ *
+ *  \param host The name of the host to be considered.
+ *  \param state The name of the state to be cleared.
+ *
+ *  \see TRACE_host_state_declare, TRACE_host_set_state, TRACE_host_push_state, TRACE_host_pop_state
+ */
+void TRACE_host_reset_state (const char *host, const char *state)
+{
+  container_t container = PJ_container_get(host);
+  type_t type = PJ_type_get (state, container->type);
+  new_pajeResetState(MSG_get_clock(), container, type);
+}
+
+/** \ingroup TRACE_API
+ *  \brief Get Paje container types that can be mapped to the nodes of a graph.
+ *
+ *  This function can be used to create a user made
+ *  graph configuration file for Triva. Normally, it is
+ *  used with the functions defined in \ref TRACE_user_variables.
+ *
+ *  \return A dynar with the types, must be freed with xbt_dynar_free.
+ */
+xbt_dynar_t TRACE_get_node_types (void)
+{
+  return instr_dict_to_dynar (trivaNodeTypes);
+}
+
+/** \ingroup TRACE_API
+ *  \brief Get Paje container types that can be mapped to the edges of a graph.
+ *
+ *  This function can be used to create a user made
+ *  graph configuration file for Triva. Normally, it is
+ *  used with the functions defined in \ref TRACE_user_variables.
+ *
+ *  \return A dynar with the types, must be freed with xbt_dynar_free.
+ */
+xbt_dynar_t TRACE_get_edge_types (void)
+{
+  return instr_dict_to_dynar (trivaEdgeTypes);
+}
+
+/** \ingroup TRACE_API
+ *  \brief Pauses all tracing activities.
+ *  \see TRACE_resume
+ */
+void TRACE_pause (void)
+{
+  instr_pause_tracing();
+}
+
+/** \ingroup TRACE_API
+ *  \brief Resumes all tracing activities.
+ *  \see TRACE_pause
+ */
+void TRACE_resume (void)
+{
+  instr_resume_tracing();
+}
+
 #endif /* HAVE_TRACING */