X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c1196ca10d1165bfaadfd66799bff4e0eec459b5..24827726d5bea684114f0b6706ecb9ed0f4ff453:/src/xbt/config.c

diff --git a/src/xbt/config.c b/src/xbt/config.c
index b0e9ef81d6..a89b62f855 100644
--- a/src/xbt/config.c
+++ b/src/xbt/config.c
@@ -2,20 +2,20 @@
 
 /* This is useful to build named structs, like option or property sets.     */
 
-/* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2004-2014. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
-#include <stdio.h>
 #include "xbt/misc.h"
 #include "xbt/sysdep.h"
 #include "xbt/log.h"
 #include "xbt/ex.h"
 #include "xbt/dynar.h"
 #include "xbt/dict.h"
-#include "xbt/peer.h"
+
+#include <stdio.h>
 
 #include "xbt/config.h"         /* prototypes of this module */
 
@@ -33,19 +33,27 @@ typedef struct {
   /* Allowed type of the variable */
   e_xbt_cfgelm_type_t type;
   int min, max;
-  int isdefault:1;
+  unsigned isdefault:1;
 
   /* Callbacks */
   xbt_cfg_cb_t cb_set;
   xbt_cfg_cb_t cb_rm;
 
   /* actual content
-     (cannot be an union because type peer uses both str and i) */
+     (cannot be an union because type peer used to use both str and i, but it could be converted now) */
   xbt_dynar_t content;
 } s_xbt_cfgelm_t, *xbt_cfgelm_t;
 
 static const char *xbt_cfgelm_type_name[xbt_cfgelm_type_count] =
-    { "int", "double", "string", "peer", "any" };
+    { "int", "double", "string", "boolean", "any" };
+
+const struct xbt_boolean_couple xbt_cfgelm_boolean_values[] = {
+  { "yes",    "no"},
+  {  "on",   "off"},
+  {"true", "false"},
+  {   "1",     "0"},
+  {  NULL,    NULL}
+};
 
 /* Internal stuff used in cache to free a variable */
 static void xbt_cfgelm_free(void *data);
@@ -58,19 +66,19 @@ static xbt_cfgelm_t xbt_cfgelm_get(xbt_cfg_t cfg, const char *name,
 
 /** @brief Constructor
  *
- * Initialise an config set
+ * Initialise a config set
  */
 
 
 xbt_cfg_t xbt_cfg_new(void)
 {
-  return (xbt_cfg_t) xbt_dict_new();
+  return (xbt_cfg_t) xbt_dict_new_homogeneous(&xbt_cfgelm_free);
 }
 
 /** \brief Copy an existing configuration set
  *
- * \arg whereto the config set to be created
- * \arg tocopy the source data
+ * @param whereto the config set to be created
+ * @param tocopy the source data
  *
  * This only copy the registrations, not the actual content
  */
@@ -86,7 +94,7 @@ void xbt_cfg_cpy(xbt_cfg_t tocopy, xbt_cfg_t * whereto)
   xbt_assert(tocopy, "cannot copy NULL config");
 
   xbt_dict_foreach((xbt_dict_t) tocopy, cursor, name, variable) {
-    xbt_cfg_register(whereto, name, variable->desc, variable->type, NULL,
+    xbt_cfg_register(whereto, name, variable->desc, variable->type,
                      variable->min, variable->max, variable->cb_set,
                      variable->cb_rm);
   }
@@ -101,9 +109,9 @@ void xbt_cfg_free(xbt_cfg_t * cfg)
 
 /** @brief Dump a config set for debuging purpose
  *
- * \arg name The name to give to this config set
- * \arg indent what to write at the begining of each line (right number of spaces)
- * \arg cfg the config set
+ * @param name The name to give to this config set
+ * @param indent what to write at the begining of each line (right number of spaces)
+ * @param cfg the config set
  */
 void xbt_cfg_dump(const char *name, const char *indent, xbt_cfg_t cfg)
 {
@@ -116,12 +124,11 @@ void xbt_cfg_dump(const char *name, const char *indent, xbt_cfg_t cfg)
   int ival;
   char *sval;
   double dval;
-  xbt_peer_t hval;
 
   if (name)
     printf("%s>> Dumping of the config set '%s':\n", indent, name);
-  xbt_dict_foreach(dict, cursor, key, variable) {
 
+  xbt_dict_foreach(dict, cursor, key, variable) {
     printf("%s  %s:", indent, key);
 
     size = xbt_dynar_length(variable->content);
@@ -154,15 +161,20 @@ void xbt_cfg_dump(const char *name, const char *indent, xbt_cfg_t cfg)
       }
       break;
 
-    case xbt_cfgelm_peer:
+    case xbt_cfgelm_boolean:
       for (i = 0; i < size; i++) {
-        hval = xbt_dynar_get_as(variable->content, i, xbt_peer_t);
-        printf("%s    %s:%d\n", indent, hval->name, hval->port);
+        ival = xbt_dynar_get_as(variable->content, i, int);
+        printf("%s    %d\n", indent, ival);
       }
       break;
 
+    case xbt_cfgelm_alias:
+      /* no content */
+      break;
+
     default:
       printf("%s    Invalid type!!\n", indent);
+      break;
     }
 
   }
@@ -172,7 +184,6 @@ void xbt_cfg_dump(const char *name, const char *indent, xbt_cfg_t cfg)
   fflush(stdout);
 
   xbt_dict_cursor_free(&cursor);
-  return;
 }
 
 /*
@@ -187,7 +198,8 @@ void xbt_cfgelm_free(void *data)
   if (!c)
     return;
   xbt_free(c->desc);
-  xbt_dynar_free(&(c->content));
+  if (c->type != xbt_cfgelm_alias)
+    xbt_dynar_free(&(c->content));
   free(c);
 }
 
@@ -195,36 +207,34 @@ void xbt_cfgelm_free(void *data)
 
 /** @brief Register an element within a config set
  *
- *  @arg cfg the config set
- *  @arg type the type of the config element
- *  @arg min the minimum
- *  @arg max the maximum
+ *  @param cfg the config set
+ *  @param name the name of the config element
+ *  @param desc a description for this item (used by xbt_cfg_help())
+ *  @param type the type of the config element
+ *  @param min the minimum number of values for this config element
+ *  @param max the maximum number of values for this config element
+ *  @param cb_set callback function called when a value is set
+ *  @param cb_rm callback function called when a value is removed
  */
 
-void
-xbt_cfg_register(xbt_cfg_t * cfg,
+void xbt_cfg_register(xbt_cfg_t * cfg,
                  const char *name, const char *desc,
-                 e_xbt_cfgelm_type_t type, void *default_value, int min,
+                 e_xbt_cfgelm_type_t type, int min,
                  int max, xbt_cfg_cb_t cb_set, xbt_cfg_cb_t cb_rm)
 {
   xbt_cfgelm_t res;
 
   if (*cfg == NULL)
     *cfg = xbt_cfg_new();
-  xbt_assert(type >= xbt_cfgelm_int && type <= xbt_cfgelm_peer,
+  xbt_assert(type >= xbt_cfgelm_int && type <= xbt_cfgelm_boolean,
               "type of %s not valid (%d should be between %d and %d)",
-              name, type, xbt_cfgelm_int, xbt_cfgelm_peer);
+             name, (int)type, xbt_cfgelm_int, xbt_cfgelm_boolean);
   res = xbt_dict_get_or_null((xbt_dict_t) * cfg, name);
-
-  if (res) {
-    XBT_WARN("Config elem %s registered twice.", name);
-    /* Will be removed by the insertion of the new one */
-  }
+  xbt_assert(NULL == res, "Refusing to register the config element '%s' twice.", name);
 
   res = xbt_new(s_xbt_cfgelm_t, 1);
   XBT_DEBUG("Register cfg elm %s (%s) (%d to %d %s (=%d) @%p in set %p)",
-         name, desc, min, max, xbt_cfgelm_type_name[type], type, res,
-         *cfg);
+            name, desc, min, max, xbt_cfgelm_type_name[type], (int)type, res, *cfg);
 
   res->desc = xbt_strdup(desc);
   res->type = type;
@@ -237,39 +247,55 @@ xbt_cfg_register(xbt_cfg_t * cfg,
   switch (type) {
   case xbt_cfgelm_int:
     res->content = xbt_dynar_new(sizeof(int), NULL);
-    if (default_value)
-      xbt_dynar_push(res->content, default_value);
     break;
 
   case xbt_cfgelm_double:
     res->content = xbt_dynar_new(sizeof(double), NULL);
-    if (default_value)
-      xbt_dynar_push(res->content, default_value);
     break;
 
   case xbt_cfgelm_string:
     res->content = xbt_dynar_new(sizeof(char *), xbt_free_ref);
-    if (default_value)
-      xbt_dynar_push(res->content, default_value);
     break;
 
-  case xbt_cfgelm_peer:
-    res->content = xbt_dynar_new(sizeof(xbt_peer_t), xbt_peer_free_voidp);
-    if (default_value)
-      xbt_dynar_push(res->content, default_value);
+  case xbt_cfgelm_boolean:
+    res->content = xbt_dynar_new(sizeof(int), NULL);
     break;
 
   default:
-    XBT_ERROR("%d is an invalide type code", type);
+    XBT_ERROR("%d is an invalid type code", (int)type);
+    break;
   }
 
-  xbt_dict_set((xbt_dict_t) * cfg, name, res, &xbt_cfgelm_free);
+  xbt_dict_set((xbt_dict_t) * cfg, name, res, NULL);
 }
 
+void xbt_cfg_register_alias(xbt_cfg_t * cfg, const char *newname, const char *oldname)
+{
+  if (*cfg == NULL)
+    *cfg = xbt_cfg_new();
+
+  xbt_cfgelm_t res = xbt_dict_get_or_null((xbt_dict_t) * cfg, oldname);
+  xbt_assert(NULL == res, "Refusing to register the option '%s' twice.", oldname);
+
+  res = xbt_dict_get_or_null((xbt_dict_t) * cfg, newname);
+  xbt_assert(res, "Cannot define an alias to the non-existing option '%s'.", newname);
+
+  res = xbt_new0(s_xbt_cfgelm_t, 1);
+  XBT_DEBUG("Register cfg alias %s -> %s in set %p)",oldname,newname, *cfg);
+
+  res->desc = bprintf("Deprecated alias for %s",newname);
+  res->type = xbt_cfgelm_alias;
+  res->min = 1;
+  res->max = 1;
+  res->isdefault = 1;
+  res->content = (xbt_dynar_t)newname;
+
+  xbt_dict_set((xbt_dict_t) * cfg, oldname, res, NULL);
+}
 /** @brief Unregister an element from a config set.
  *
- *  @arg cfg the config set
- *  @arg name the name of the elem to be freed
+ *  @param cfg the config set
+ *  @param name the name of the element to be freed
  *
  *  Note that it removes both the description and the actual content.
  *  Throws not_found when no such element exists.
@@ -284,14 +310,14 @@ void xbt_cfg_unregister(xbt_cfg_t cfg, const char *name)
 /**
  * @brief Parse a string and register the stuff described.
  *
- * @arg cfg the config set
- * @arg entry a string describing the element to register
+ * @param cfg the config set
+ * @param entry a string describing the element to register
  *
  * The string may consist in several variable descriptions separated by a space.
  * Each of them must use the following syntax: \<name\>:\<min nb\>_to_\<max nb\>_\<type\>
- * with type being one of  'string','int', 'peer' or 'double'.
+ * with type being one of  'string','int' or 'double'.
  *
- * FIXME: this does not allow to set the description
+ * Note that this does not allow to set the description, so you should prefer the other interface
  */
 
 void xbt_cfg_register_str(xbt_cfg_t * cfg, const char *entry)
@@ -326,23 +352,38 @@ void xbt_cfg_register_str(xbt_cfg_t * cfg, const char *entry)
               "; Should be <name>:<min nb>_to_<max nb>_<type>");
   tok++;
 
-  for (type = 0;
+  for (type = (e_xbt_cfgelm_type_t)0;
        type < xbt_cfgelm_type_count
        && strcmp(tok, xbt_cfgelm_type_name[type]); type++);
   xbt_assert(type < xbt_cfgelm_type_count,
               "Invalid type in config element descriptor: %s%s", entry,
-              "; Should be one of 'string', 'int', 'peer' or 'double'.");
+              "; Should be one of 'string', 'int' or 'double'.");
 
-  xbt_cfg_register(cfg, entrycpy, NULL, type, NULL, min, max, NULL, NULL);
+  xbt_cfg_register(cfg, entrycpy, NULL, type, min, max, NULL, NULL);
 
   free(entrycpy);               /* strdup'ed by dict mechanism, but cannot be const */
 }
 
-static int strcmp_voidp(const void *pa, const void *pb)
+/** @brief Displays the declared aliases and their description */
+void xbt_cfg_aliases(xbt_cfg_t cfg)
 {
-  return strcmp(*(const char **)pa, *(const char **)pb);
-}
+  xbt_dict_cursor_t dict_cursor;
+  unsigned int dynar_cursor;
+  xbt_cfgelm_t variable;
+  char *name;
+  xbt_dynar_t names = xbt_dynar_new(sizeof(char *), NULL);
 
+  xbt_dict_foreach((xbt_dict_t )cfg, dict_cursor, name, variable)
+    xbt_dynar_push(names, &name);
+  xbt_dynar_sort_strings(names);
+
+  xbt_dynar_foreach(names, dynar_cursor, name) {
+    variable = xbt_dict_get((xbt_dict_t )cfg, name);
+
+    if (variable->type == xbt_cfgelm_alias)
+      printf("   %s: %s\n", name, variable->desc);
+  }
+}
 /** @brief Displays the declared options and their description */
 void xbt_cfg_help(xbt_cfg_t cfg)
 {
@@ -352,66 +393,62 @@ void xbt_cfg_help(xbt_cfg_t cfg)
   char *name;
   xbt_dynar_t names = xbt_dynar_new(sizeof(char *), NULL);
 
-  xbt_dict_foreach((xbt_dict_t )cfg, dict_cursor, name, variable) {
+  xbt_dict_foreach((xbt_dict_t )cfg, dict_cursor, name, variable)
     xbt_dynar_push(names, &name);
-  }
-  xbt_dynar_sort(names, strcmp_voidp);
+  xbt_dynar_sort_strings(names);
 
   xbt_dynar_foreach(names, dynar_cursor, name) {
     int i;
     int size;
     variable = xbt_dict_get((xbt_dict_t )cfg, name);
+    if (variable->type == xbt_cfgelm_alias)
+      continue;
 
     printf("   %s: %s\n", name, variable->desc);
     printf("       Type: %s; ", xbt_cfgelm_type_name[variable->type]);
     if (variable->min != 1 || variable->max != 1) {
-      if (variable->min == 0 && variable->max == 0)
-        printf("Arity: no bound; ");
+      printf("Arity: min:%d to max:", variable->min);
+      if (variable->max == 0)
+        printf("(no bound); ");
       else
-        printf("Arity: min:%d to max:%d; ", variable->min, variable->max);
+        printf("%d; ", variable->max);
     }
-    printf("Current value: ");
     size = xbt_dynar_length(variable->content);
+    printf("Current value%s: ", (size <= 1 ? "" : "s"));
 
-    switch (variable->type) {
-      int ival;
-      char *sval;
-      double dval;
-      xbt_peer_t hval;
+    if (size != 1)
+      printf(size == 0 ? "n/a\n" : "{ ");
+    for (i = 0; i < size; i++) {
+      const char *sep = (size == 1 ? "\n" : (i < size - 1 ? ", " : " }\n"));
 
-    case xbt_cfgelm_int:
-      for (i = 0; i < size; i++) {
-        ival = xbt_dynar_get_as(variable->content, i, int);
-        printf("%s%d\n", (i == 0 ? "" : "              "), ival);
-      }
-      break;
+      switch (variable->type) {
+      case xbt_cfgelm_int:
+        printf("%d%s", xbt_dynar_get_as(variable->content, i, int), sep);
+        break;
 
-    case xbt_cfgelm_double:
-      for (i = 0; i < size; i++) {
-        dval = xbt_dynar_get_as(variable->content, i, double);
-        printf("%s%f\n", (i == 0 ? "" : "              "), dval);
-      }
-      break;
+      case xbt_cfgelm_double:
+        printf("%f%s", xbt_dynar_get_as(variable->content, i, double), sep);
+        break;
 
-    case xbt_cfgelm_string:
-      for (i = 0; i < size; i++) {
-        sval = xbt_dynar_get_as(variable->content, i, char *);
-        printf("%s'%s'\n", (i == 0 ? "" : "              "), sval);
-      }
-      break;
+      case xbt_cfgelm_string:
+        printf("'%s'%s", xbt_dynar_get_as(variable->content, i, char *), sep);
+        break;
 
-    case xbt_cfgelm_peer:
-      for (i = 0; i < size; i++) {
-        hval = xbt_dynar_get_as(variable->content, i, xbt_peer_t);
-        printf("%s%s:%d\n", (i == 0 ? "" : "              "), hval->name,
-               hval->port);
+      case xbt_cfgelm_boolean: {
+        int b = xbt_dynar_get_as(variable->content, i, int);
+        const char *bs = b ? xbt_cfgelm_boolean_values[0].true_val
+                           : xbt_cfgelm_boolean_values[0].false_val;
+        if (b == 0 || b == 1)
+          printf("'%s'%s", bs, sep);
+        else
+          printf("'%s/%d'%s", bs, b, sep);
+        break;
       }
-      break;
 
-    default:
-      printf("Invalid type!!\n");
+      default:
+        printf("Invalid type!!%s", sep);
+      }
     }
-
   }
 
   xbt_dynar_free(&names);
@@ -429,6 +466,9 @@ void xbt_cfg_check(xbt_cfg_t cfg)
   XBT_DEBUG("Check cfg set %p", cfg);
 
   xbt_dict_foreach((xbt_dict_t) cfg, cursor, name, variable) {
+    if (variable->type == xbt_cfgelm_alias)
+      continue;
+
     size = xbt_dynar_length(variable->content);
     if (variable->min > size) {
       xbt_dict_cursor_free(&cursor);
@@ -438,6 +478,13 @@ void xbt_cfg_check(xbt_cfg_t cfg)
              size);
     }
 
+    if (variable->isdefault && size > variable->min) {
+      xbt_dict_cursor_free(&cursor);
+      THROWF(mismatch_error, 0,
+             "Config elem %s theoretically accepts %d %s, but has a default of %d values.",
+             name, variable->min, xbt_cfgelm_type_name[variable->type], size);
+    }
+
     if (variable->max > 0 && variable->max < size) {
       xbt_dict_cursor_free(&cursor);
       THROWF(mismatch_error, 0,
@@ -450,17 +497,21 @@ void xbt_cfg_check(xbt_cfg_t cfg)
   xbt_dict_cursor_free(&cursor);
 }
 
-static xbt_cfgelm_t xbt_cfgelm_get(xbt_cfg_t cfg,
-                                   const char *name,
-                                   e_xbt_cfgelm_type_t type)
+static xbt_cfgelm_t xbt_cfgelm_get(xbt_cfg_t cfg, const char *name, e_xbt_cfgelm_type_t type)
 {
-  xbt_cfgelm_t res = NULL;
+  xbt_cfgelm_t res = xbt_dict_get_or_null((xbt_dict_t) cfg, name);
+
+  // The user used the old name. Switch to the new one after a short warning
+  while (res && res->type == xbt_cfgelm_alias) {
+    const char* newname = (const char *)res->content;
+    XBT_INFO("Option %s has been renamed to %s. Consider switching.", name, newname);
+    res = xbt_cfgelm_get(cfg, newname, type);
+  }
 
-  res = xbt_dict_get_or_null((xbt_dict_t) cfg, name);
   if (!res) {
     xbt_cfg_help(cfg);
-    THROWF(not_found_error, 0,
-           "No registered variable '%s' in this config set", name);
+    fflush(stdout);
+    THROWF(not_found_error, 0, "No registered variable '%s' in this config set.", name);
   }
 
   xbt_assert(type == xbt_cfgelm_any || res->type == type,
@@ -473,10 +524,10 @@ static xbt_cfgelm_t xbt_cfgelm_get(xbt_cfg_t cfg,
 
 /** @brief Get the type of this variable in that configuration set
  *
- * \arg cfg the config set
- * \arg name the name of the element
- * \arg type the result
+ * @param cfg the config set
+ * @param name the name of the element
  *
+ * @return the type of the given element
  */
 
 e_xbt_cfgelm_type_t xbt_cfg_get_type(xbt_cfg_t cfg, const char *name)
@@ -490,7 +541,7 @@ e_xbt_cfgelm_type_t xbt_cfg_get_type(xbt_cfg_t cfg, const char *name)
            "Can't get the type of '%s' since this variable does not exist",
            name);
 
-  XBT_INFO("type in variable = %d", variable->type);
+  XBT_DEBUG("type in variable = %d", (int)variable->type);
 
   return variable->type;
 }
@@ -498,9 +549,9 @@ e_xbt_cfgelm_type_t xbt_cfg_get_type(xbt_cfg_t cfg, const char *name)
 /*----[ Setting ]---------------------------------------------------------*/
 /**  @brief va_args version of xbt_cfg_set
  *
- * \arg cfg config set to fill
- * \arg n   variable name
- * \arg pa  variable value
+ * @param cfg config set to fill
+ * @param name  variable name
+ * @param pa  variable value
  *
  * Add some values to the config set.
  */
@@ -509,13 +560,14 @@ void xbt_cfg_set_vargs(xbt_cfg_t cfg, const char *name, va_list pa)
   char *str;
   int i;
   double d;
-  e_xbt_cfgelm_type_t type = 0; /* Set a dummy value to make gcc happy. It cannot get uninitialized */
+  e_xbt_cfgelm_type_t type = xbt_cfgelm_any; /* Set a dummy value to make gcc happy. It cannot get uninitialized */
 
   xbt_ex_t e;
 
   TRY {
     type = xbt_cfg_get_type(cfg, name);
-  } CATCH(e) {
+  }
+  CATCH(e) {
     if (e.category == not_found_error) {
       xbt_ex_free(e);
       THROWF(not_found_error, 0,
@@ -526,12 +578,6 @@ void xbt_cfg_set_vargs(xbt_cfg_t cfg, const char *name, va_list pa)
   }
 
   switch (type) {
-  case xbt_cfgelm_peer:
-    str = va_arg(pa, char *);
-    i = va_arg(pa, int);
-    xbt_cfg_set_peer(cfg, name, str, i);
-    break;
-
   case xbt_cfgelm_string:
     str = va_arg(pa, char *);
     xbt_cfg_set_string(cfg, name, str);
@@ -547,16 +593,21 @@ void xbt_cfg_set_vargs(xbt_cfg_t cfg, const char *name, va_list pa)
     xbt_cfg_set_double(cfg, name, d);
     break;
 
+  case xbt_cfgelm_boolean:
+    str = va_arg(pa, char *);
+    xbt_cfg_set_boolean(cfg, name, str);
+    break;
+
   default:
-    xbt_die("Config element variable %s not valid (type=%d)", name, type);
+    xbt_die("Config element variable %s not valid (type=%d)", name, (int)type);
   }
 }
 
 /** @brief Add a NULL-terminated list of pairs {(char*)key, value} to the set
  *
- * \arg cfg config set to fill
- * \arg name variable name
- * \arg varargs variable value
+ * @param cfg config set to fill
+ * @param name variable name
+ * @param ... variable value
  *
  */
 void xbt_cfg_set(xbt_cfg_t cfg, const char *name, ...)
@@ -570,8 +621,8 @@ void xbt_cfg_set(xbt_cfg_t cfg, const char *name, ...)
 
 /** @brief Add values parsed from a string into a config set
  *
- * \arg cfg config set to fill
- * \arg options a string containing the content to add to the config set. This
+ * @param cfg config set to fill
+ * @param options a string containing the content to add to the config set. This
  * is a '\\t',' ' or '\\n' or ',' separated list of variables. Each individual variable is
  * like "[name]:[value]" where [name] is the name of an already registred
  * variable, and [value] conforms to the data type under which this variable was
@@ -580,21 +631,14 @@ void xbt_cfg_set(xbt_cfg_t cfg, const char *name, ...)
  * @todo This is a crude manual parser, it should be a proper lexer.
  */
 
-void xbt_cfg_set_parse(xbt_cfg_t cfg, const char *options)
-{
-  xbt_ex_t e;
-
-  int i;
-  double d;
-  char *str;
+void xbt_cfg_set_parse(xbt_cfg_t cfg, const char *options) {
 
-  xbt_cfgelm_t variable = NULL;
   char *optionlist_cpy;
   char *option, *name, *val;
 
   int len;
 
-  XBT_IN("");
+  XBT_IN();
   if (!options || !strlen(options)) {   /* nothing to do */
     return;
   }
@@ -644,88 +688,95 @@ void xbt_cfg_set_parse(xbt_cfg_t cfg, const char *options)
 
     val = strchr(name, ':');
     if (!val) {
-      free(optionlist_cpy);
-      xbt_die("Option '%s' badly formated. Should be of the form 'name:value'",
+      /* don't free(optionlist_cpy) here, 'name' points inside it */
+      xbt_die("Option '%s' badly formatted. Should be of the form 'name:value'",
               name);
     }
     *(val++) = '\0';
 
-    if (strncmp(name, "contexts/", strlen("contexts/")))
+    if (strncmp(name, "contexts/", strlen("contexts/")) && strncmp(name, "path", strlen("path")))
       XBT_INFO("Configuration change: Set '%s' to '%s'", name, val);
 
     TRY {
-      variable = xbt_dict_get((xbt_dict_t) cfg, name);
-    }
-    CATCH(e) {
-      if (e.category == not_found_error) {
-        xbt_ex_free(e);
-        name = xbt_strdup(name);
-        free(optionlist_cpy);
-        THROWF(not_found_error, 0,
-               "No registered variable corresponding to '%s'.", name);
-      }
+      xbt_cfg_set_as_string(cfg,name,val);
+    } CATCH_ANONYMOUS {
       free(optionlist_cpy);
       RETHROW;
     }
+  }
+  free(optionlist_cpy);
+}
 
-    TRY {
-      switch (variable->type) {
-      case xbt_cfgelm_string:
-        xbt_cfg_set_string(cfg, name, val);     /* throws */
-        break;
-
-      case xbt_cfgelm_int:
-        i = strtol(val, &val, 0);
-        if (val == NULL) {
-          free(optionlist_cpy);
-          xbt_die("Value of option %s not valid. Should be an integer", name);
-        }
+/** @brief Set the value of a variable, using the string representation of that value
+ *
+ * @param cfg config set to modify
+ * @param key name of the variable to modify
+ * @param value string representation of the value to set
+ *
+ * @return the first char after the parsed value in val
+ */
 
-        xbt_cfg_set_int(cfg, name, i);  /* throws */
-        break;
+void *xbt_cfg_set_as_string(xbt_cfg_t cfg, const char *key, const char *value) {
+  xbt_ex_t e;
 
-      case xbt_cfgelm_double:
-        d = strtod(val, &val);
-        if (val == NULL) {
-          free(optionlist_cpy);
-          xbt_die("Value of option %s not valid. Should be a double", name);
-        }
+  char *ret;
+  volatile xbt_cfgelm_t variable = NULL;
+  int i;
+  double d;
 
-        xbt_cfg_set_double(cfg, name, d);       /* throws */
-        break;
+  TRY {
+    while (variable == NULL) {
+      variable = xbt_dict_get((xbt_dict_t) cfg, key);
+      while (variable->type == xbt_cfgelm_alias) {
+        const char *newname = (const char*)variable->content;
+        XBT_INFO("Note: configuration '%s' is deprecated. Please use '%s' instead.", key, newname);
+        key = newname;
+        variable = NULL;
+      }
+    }
+  }
+  CATCH(e) {
+    if (e.category == not_found_error) {
+      xbt_ex_free(e);
+      THROWF(not_found_error, 0, "No registered variable corresponding to '%s'.", key);
+    }
+    RETHROW;
+  }
 
-      case xbt_cfgelm_peer:
-        str = val;
-        val = strchr(val, ':');
-        if (!val) {
-          free(optionlist_cpy);
-          xbt_die("Value of option %s not valid. Should be an peer (machine:port)",
-                  name);
-        }
-
-        *(val++) = '\0';
-        i = strtol(val, &val, 0);
-        if (val == NULL) {
-          free(optionlist_cpy);
-          xbt_die("Value of option %s not valid. Should be an peer (machine:port)",
-                  name);
-        }
-
-        xbt_cfg_set_peer(cfg, name, str, i);    /* throws */
-        break;
+  switch (variable->type) {
+  case xbt_cfgelm_string:
+    xbt_cfg_set_string(cfg, key, value);     /* throws */
+    break;
 
-      default:
-        THROWF(unknown_error, 0, "Type of config element %s is not valid.",
-               name);
-      }
+  case xbt_cfgelm_int:
+    i = strtol(value, &ret, 0);
+    if (ret == value) {
+      xbt_die("Value of option %s not valid. Should be an integer", key);
     }
-    CATCH_ANONYMOUS {
-      free(optionlist_cpy);
-      RETHROW;
+
+    xbt_cfg_set_int(cfg, key, i);  /* throws */
+    break;
+
+  case xbt_cfgelm_double:
+    d = strtod(value, &ret);
+    if (ret == value) {
+      xbt_die("Value of option %s not valid. Should be a double", key);
     }
+
+    xbt_cfg_set_double(cfg, key, d);       /* throws */
+    break;
+
+  case xbt_cfgelm_boolean:
+    xbt_cfg_set_boolean(cfg, key, value);  /* throws */
+    ret = (char *)value + strlen(value);
+    break;
+
+  default:
+    THROWF(unknown_error, 0, "Type of config element %s is not valid.", key);
+    break;
   }
-  free(optionlist_cpy);
 
+  return ret;
 }
 
 /** @brief Set an integer value to \a name within \a cfg if it wasn't changed yet
@@ -762,7 +813,7 @@ void xbt_cfg_setdefault_double(xbt_cfg_t cfg, const char *name, double val)
   }
   else
     XBT_DEBUG
-        ("Do not override configuration variable '%s' with value '%lf' because it was already set.",
+        ("Do not override configuration variable '%s' with value '%f' because it was already set.",
          name, val);
 }
 
@@ -786,42 +837,41 @@ void xbt_cfg_setdefault_string(xbt_cfg_t cfg, const char *name,
          name, val);
 }
 
-/** @brief Set a peer value to \a name within \a cfg if it wasn't changed yet
+
+/** @brief Set an boolean value to \a name within \a cfg if it wasn't changed yet
  *
  * This is useful to change the default value of a variable while allowing
  * users to override it with command line arguments
  */
-void xbt_cfg_setdefault_peer(xbt_cfg_t cfg, const char *name,
-                             const char *host, int port)
+void xbt_cfg_setdefault_boolean(xbt_cfg_t cfg, const char *name, const char *val)
 {
-  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_peer);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_boolean);
 
   if (variable->isdefault){
-    xbt_cfg_set_peer(cfg, name, host, port);
+    xbt_cfg_set_boolean(cfg, name, val);
     variable->isdefault = 1;
   }
-  else
+   else
     XBT_DEBUG
-        ("Do not override configuration variable '%s' with value '%s:%d' because it was already set.",
-         name, host, port);
+        ("Do not override configuration variable '%s' with value '%s' because it was already set.",
+         name, val);
 }
 
 /** @brief Set or add an integer value to \a name within \a cfg
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the value of the variable
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value of the variable
  */
 void xbt_cfg_set_int(xbt_cfg_t cfg, const char *name, int val)
 {
-  xbt_cfgelm_t variable;
 
   XBT_VERB("Configuration setting: %s=%d", name, val);
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_int);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_int);
 
   if (variable->max == 1) {
-    if (variable->cb_rm && xbt_dynar_length(variable->content))
-      (*variable->cb_rm) (name, 0);
+    if (variable->cb_rm && !xbt_dynar_is_empty(variable->content))
+      variable->cb_rm(name, 0);
 
     xbt_dynar_set(variable->content, 0, &val);
   } else {
@@ -836,27 +886,26 @@ void xbt_cfg_set_int(xbt_cfg_t cfg, const char *name, int val)
   }
 
   if (variable->cb_set)
-    (*variable->cb_set) (name, xbt_dynar_length(variable->content) - 1);
+    variable->cb_set(name, xbt_dynar_length(variable->content) - 1);
   variable->isdefault = 0;
 }
 
 /** @brief Set or add a double value to \a name within \a cfg
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the doule to set
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the doule to set
  */
 
 void xbt_cfg_set_double(xbt_cfg_t cfg, const char *name, double val)
 {
-  xbt_cfgelm_t variable;
 
   XBT_VERB("Configuration setting: %s=%f", name, val);
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_double);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_double);
 
   if (variable->max == 1) {
-    if (variable->cb_rm && xbt_dynar_length(variable->content))
-      (*variable->cb_rm) (name, 0);
+    if (variable->cb_rm && !xbt_dynar_is_empty(variable->content))
+      variable->cb_rm(name, 0);
 
     xbt_dynar_set(variable->content, 0, &val);
   } else {
@@ -870,33 +919,32 @@ void xbt_cfg_set_double(xbt_cfg_t cfg, const char *name, double val)
   }
 
   if (variable->cb_set)
-    (*variable->cb_set) (name, xbt_dynar_length(variable->content) - 1);
+    variable->cb_set(name, xbt_dynar_length(variable->content) - 1);
   variable->isdefault = 0;
 }
 
 /** @brief Set or add a string value to \a name within \a cfg
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the value to be added
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value to be added
  *
  */
 
 void xbt_cfg_set_string(xbt_cfg_t cfg, const char *name, const char *val)
 {
-  xbt_cfgelm_t variable;
   char *newval = xbt_strdup(val);
 
   XBT_VERB("Configuration setting: %s=%s", name, val);
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_string);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_string);
+
   XBT_DEBUG("Variable: %d to %d %s (=%d) @%p",
-         variable->min, variable->max,
-         xbt_cfgelm_type_name[variable->type], variable->type, variable);
+         variable->min, variable->max, xbt_cfgelm_type_name[variable->type], (int)variable->type, variable);
 
   if (variable->max == 1) {
-    if (xbt_dynar_length(variable->content)) {
+    if (!xbt_dynar_is_empty(variable->content)) {
       if (variable->cb_rm)
-        (*variable->cb_rm) (name, 0);
+        variable->cb_rm(name, 0);
       else if (variable->type == xbt_cfgelm_string) {
         char *sval = xbt_dynar_get_as(variable->content, 0, char *);
         free(sval);
@@ -915,48 +963,55 @@ void xbt_cfg_set_string(xbt_cfg_t cfg, const char *name, const char *val)
   }
 
   if (variable->cb_set)
-    (*variable->cb_set) (name, xbt_dynar_length(variable->content) - 1);
+    variable->cb_set(name, xbt_dynar_length(variable->content) - 1);
   variable->isdefault = 0;
 }
 
-/** @brief Set or add an peer value to \a name within \a cfg
- *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg peer the peer
- * \arg port the port number
+/** @brief Set or add a boolean value to \a name within \a cfg
  *
- * \e peer values are composed of a string (peername) and an integer (port)
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value of the variable
  */
-
-void
-xbt_cfg_set_peer(xbt_cfg_t cfg, const char *name, const char *peer,
-                 int port)
+void xbt_cfg_set_boolean(xbt_cfg_t cfg, const char *name, const char *val)
 {
-  xbt_cfgelm_t variable;
-  xbt_peer_t val = xbt_peer_new(peer, port);
+  int i, bval;
 
-  XBT_VERB("Configuration setting: %s=%s:%d", name, peer, port);
+  XBT_VERB("Configuration setting: %s=%s", name, val);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_boolean);
 
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_peer);
+  for (i = 0; xbt_cfgelm_boolean_values[i].true_val != NULL; i++) {
+  if (strcmp(val, xbt_cfgelm_boolean_values[i].true_val) == 0){
+    bval = 1;
+    break;
+  }
+  if (strcmp(val, xbt_cfgelm_boolean_values[i].false_val) == 0){
+    bval = 0;
+    break;
+  }
+  }
+  if (xbt_cfgelm_boolean_values[i].true_val == NULL) {
+    xbt_die("Value of option '%s' not valid. Should be a boolean (yes,no,on,off,true,false,0,1)", val);
+  }
 
   if (variable->max == 1) {
-    if (variable->cb_rm && xbt_dynar_length(variable->content))
-      (*variable->cb_rm) (name, 0);
+    if (variable->cb_rm && !xbt_dynar_is_empty(variable->content))
+      variable->cb_rm(name, 0);
 
-    xbt_dynar_set(variable->content, 0, &val);
+    xbt_dynar_set(variable->content, 0, &bval);
   } else {
     if (variable->max
-        && xbt_dynar_length(variable->content) == variable->max)
+        && xbt_dynar_length(variable->content) ==
+        (unsigned long) variable->max)
       THROWF(mismatch_error, 0,
-             "Cannot add value %s:%d to the config element %s since it's already full (size=%d)",
-             peer, port, name, variable->max);
+             "Cannot add value %s to the config element %s since it's already full (size=%d)",
+             val, name, variable->max);
 
-    xbt_dynar_push(variable->content, &val);
+    xbt_dynar_push(variable->content, &bval);
   }
 
   if (variable->cb_set)
-    (*variable->cb_set) (name, xbt_dynar_length(variable->content) - 1);
+    variable->cb_set(name, xbt_dynar_length(variable->content) - 1);
   variable->isdefault = 0;
 }
 
@@ -964,18 +1019,17 @@ xbt_cfg_set_peer(xbt_cfg_t cfg, const char *name, const char *peer,
 
 /** @brief Remove the provided \e val integer value from a variable
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the value to be removed
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value to be removed
  */
 void xbt_cfg_rm_int(xbt_cfg_t cfg, const char *name, int val)
 {
 
-  xbt_cfgelm_t variable;
   unsigned int cpt;
   int seen;
 
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_int);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_int);
 
   if (xbt_dynar_length(variable->content) == variable->min)
     THROWF(mismatch_error, 0,
@@ -985,7 +1039,7 @@ void xbt_cfg_rm_int(xbt_cfg_t cfg, const char *name, int val)
   xbt_dynar_foreach(variable->content, cpt, seen) {
     if (seen == val) {
       if (variable->cb_rm)
-        (*variable->cb_rm) (name, cpt);
+        variable->cb_rm(name, cpt);
       xbt_dynar_cursor_rm(variable->content, &cpt);
       return;
     }
@@ -998,18 +1052,17 @@ void xbt_cfg_rm_int(xbt_cfg_t cfg, const char *name, int val)
 
 /** @brief Remove the provided \e val double value from a variable
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the value to be removed
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value to be removed
  */
 
 void xbt_cfg_rm_double(xbt_cfg_t cfg, const char *name, double val)
 {
-  xbt_cfgelm_t variable;
   unsigned int cpt;
   double seen;
 
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_double);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_double);
 
   if (xbt_dynar_length(variable->content) == variable->min)
     THROWF(mismatch_error, 0,
@@ -1020,7 +1073,7 @@ void xbt_cfg_rm_double(xbt_cfg_t cfg, const char *name, double val)
     if (seen == val) {
       xbt_dynar_cursor_rm(variable->content, &cpt);
       if (variable->cb_rm)
-        (*variable->cb_rm) (name, cpt);
+        variable->cb_rm(name, cpt);
       return;
     }
   }
@@ -1032,17 +1085,15 @@ void xbt_cfg_rm_double(xbt_cfg_t cfg, const char *name, double val)
 
 /** @brief Remove the provided \e val string value from a variable
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the value of the string which will be removed
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value of the string which will be removed
  */
 void xbt_cfg_rm_string(xbt_cfg_t cfg, const char *name, const char *val)
 {
-  xbt_cfgelm_t variable;
   unsigned int cpt;
   char *seen;
-
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_string);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_string);
 
   if (xbt_dynar_length(variable->content) == variable->min)
     THROWF(mismatch_error, 0,
@@ -1052,7 +1103,7 @@ void xbt_cfg_rm_string(xbt_cfg_t cfg, const char *name, const char *val)
   xbt_dynar_foreach(variable->content, cpt, seen) {
     if (!strcpy(seen, val)) {
       if (variable->cb_rm)
-        (*variable->cb_rm) (name, cpt);
+        variable->cb_rm(name, cpt);
       xbt_dynar_cursor_rm(variable->content, &cpt);
       return;
     }
@@ -1063,41 +1114,36 @@ void xbt_cfg_rm_string(xbt_cfg_t cfg, const char *name, const char *val)
          val, name);
 }
 
-/** @brief Remove the provided \e val peer value from a variable
+/** @brief Remove the provided \e val boolean value from a variable
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg peer the peername
- * \arg port the port number
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value to be removed
  */
-
-void
-xbt_cfg_rm_peer(xbt_cfg_t cfg, const char *name, const char *peer,
-                int port)
+void xbt_cfg_rm_boolean(xbt_cfg_t cfg, const char *name, int val)
 {
-  xbt_cfgelm_t variable;
-  unsigned int cpt;
-  xbt_peer_t seen;
 
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_peer);
+  unsigned int cpt;
+  int seen;
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_boolean);
 
   if (xbt_dynar_length(variable->content) == variable->min)
     THROWF(mismatch_error, 0,
-           "Cannot remove value %s:%d from the config element %s since it's already at its minimal size (=%d)",
-           peer, port, name, variable->min);
+           "Cannot remove value %d from the config element %s since it's already at its minimal size (=%d)",
+           val, name, variable->min);
 
   xbt_dynar_foreach(variable->content, cpt, seen) {
-    if (!strcpy(seen->name, peer) && seen->port == port) {
+    if (seen == val) {
       if (variable->cb_rm)
-        (*variable->cb_rm) (name, cpt);
+        variable->cb_rm(name, cpt);
       xbt_dynar_cursor_rm(variable->content, &cpt);
       return;
     }
   }
 
   THROWF(not_found_error, 0,
-         "Can't remove the value %s:%d of config element %s: value not found.",
-         peer, port, name);
+         "Can't remove the value %d of config element %s: value not found.",
+         val, name);
 }
 
 /** @brief Remove the \e pos th value from the provided variable */
@@ -1105,9 +1151,7 @@ xbt_cfg_rm_peer(xbt_cfg_t cfg, const char *name, const char *peer,
 void xbt_cfg_rm_at(xbt_cfg_t cfg, const char *name, int pos)
 {
 
-  xbt_cfgelm_t variable;
-
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_any);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_any);
 
   if (xbt_dynar_length(variable->content) == variable->min)
     THROWF(mismatch_error, 0,
@@ -1115,14 +1159,14 @@ void xbt_cfg_rm_at(xbt_cfg_t cfg, const char *name, int pos)
            pos, name, variable->min);
 
   if (variable->cb_rm)
-    (*variable->cb_rm) (name, pos);
+    variable->cb_rm(name, pos);
   xbt_dynar_remove_at(variable->content, pos, NULL);
 }
 
 /** @brief Remove all the values from a variable
  *
- * \arg cfg the config set
- * \arg name the name of the variable
+ * @param cfg the config set
+ * @param name the name of the variable
  */
 
 void xbt_cfg_empty(xbt_cfg_t cfg, const char *name)
@@ -1132,7 +1176,8 @@ void xbt_cfg_empty(xbt_cfg_t cfg, const char *name)
 
   TRY {
     variable = xbt_dict_get((xbt_dict_t) cfg, name);
-  } CATCH(e) {
+  }
+  CATCH(e) {
     if (e.category != not_found_error)
       RETHROW;
 
@@ -1147,7 +1192,7 @@ void xbt_cfg_empty(xbt_cfg_t cfg, const char *name)
       unsigned int cpt;
       void *ignored;
       xbt_dynar_foreach(variable->content, cpt, ignored) {
-        (*variable->cb_rm) (name, cpt);
+        variable->cb_rm(name, cpt);
       }
     }
     xbt_dynar_reset(variable->content);
@@ -1166,9 +1211,8 @@ int xbt_cfg_is_default_value(xbt_cfg_t cfg, const char *name)
 
 /** @brief Retrieve an integer value of a variable (get a warning if not uniq)
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the wanted value
+ * @param cfg the config set
+ * @param name the name of the variable
  *
  * Returns the first value from the config set under the given name.
  * If there is more than one value, it will issue a warning. Consider using
@@ -1191,9 +1235,8 @@ int xbt_cfg_get_int(xbt_cfg_t cfg, const char *name)
 
 /** @brief Retrieve a double value of a variable (get a warning if not uniq)
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg val the wanted value
+ * @param cfg the config set
+ * @param name the name of the variable
  *
  * Returns the first value from the config set under the given name.
  * If there is more than one value, it will issue a warning. Consider using
@@ -1217,9 +1260,8 @@ double xbt_cfg_get_double(xbt_cfg_t cfg, const char *name)
 
 /** @brief Retrieve a string value of a variable (get a warning if not uniq)
  *
- * \arg th the config set
- * \arg name the name of the variable
- * \arg val the wanted value
+ * @param cfg the config set
+ * @param name the name of the variable
  *
  * Returns the first value from the config set under the given name.
  * If there is more than one value, it will issue a warning. Consider using
@@ -1236,19 +1278,17 @@ char *xbt_cfg_get_string(xbt_cfg_t cfg, const char *name)
     XBT_WARN
         ("You asked for the first value of the config element '%s', but there is %lu values\n",
          name, xbt_dynar_length(variable->content));
-  } else if (xbt_dynar_length(variable->content) == 0) {
+  } else if (xbt_dynar_is_empty(variable->content)) {
     return NULL;
   }
 
   return xbt_dynar_get_as(variable->content, 0, char *);
 }
 
-/** @brief Retrieve an peer value of a variable (get a warning if not uniq)
+/** @brief Retrieve a boolean value of a variable (get a warning if not uniq)
  *
- * \arg cfg the config set
- * \arg name the name of the variable
- * \arg peer the peer
- * \arg port the port number
+ * @param cfg the config set
+ * @param name the name of the variable
  *
  * Returns the first value from the config set under the given name.
  * If there is more than one value, it will issue a warning. Consider using
@@ -1256,31 +1296,23 @@ char *xbt_cfg_get_string(xbt_cfg_t cfg, const char *name)
  *
  * \warning the returned value is the actual content of the config set
  */
-
-void xbt_cfg_get_peer(xbt_cfg_t cfg, const char *name, char **peer,
-                      int *port)
+int xbt_cfg_get_boolean(xbt_cfg_t cfg, const char *name)
 {
-  xbt_cfgelm_t variable;
-  xbt_peer_t val;
-
-  variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_peer);
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_boolean);
 
   if (xbt_dynar_length(variable->content) > 1) {
     XBT_WARN
-        ("You asked for the first value of the config element '%s', but there is %lu values\n",
+        ("You asked for the first value of the config element '%s', but there is %lu values",
          name, xbt_dynar_length(variable->content));
   }
 
-  val = xbt_dynar_get_as(variable->content, 0, xbt_peer_t);
-  *peer = val->name;
-  *port = val->port;
+  return xbt_dynar_get_as(variable->content, 0, int);
 }
 
 /** @brief Retrieve the dynar of all the values stored in a variable
  *
- * \arg cfg where to search in
- * \arg name what to search for
- * \arg dynar result
+ * @param cfg where to search in
+ * @param name what to search for
  *
  * Get the data stored in the config set.
  *
@@ -1293,7 +1325,8 @@ xbt_dynar_t xbt_cfg_get_dynar(xbt_cfg_t cfg, const char *name)
 
   TRY {
     variable = xbt_dict_get((xbt_dict_t) cfg, name);
-  } CATCH(e) {
+  }
+  CATCH(e) {
     if (e.category == not_found_error) {
       xbt_ex_free(e);
       THROWF(not_found_error, 0,
@@ -1331,17 +1364,12 @@ char *xbt_cfg_get_string_at(xbt_cfg_t cfg, const char *name, int pos)
   return xbt_dynar_get_as(variable->content, pos, char *);
 }
 
-/** @brief Retrieve one of the peer value of a variable */
-void
-xbt_cfg_get_peer_at(xbt_cfg_t cfg, const char *name, int pos,
-                    char **peer, int *port)
+/** @brief Retrieve one of the boolean value of a variable */
+int xbt_cfg_get_boolean_at(xbt_cfg_t cfg, const char *name, int pos)
 {
 
-  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_int);
-  xbt_peer_t val = xbt_dynar_get_ptr(variable->content, pos);
-
-  *port = val->port;
-  *peer = val->name;
+  xbt_cfgelm_t variable = xbt_cfgelm_get(cfg, name, xbt_cfgelm_boolean);
+  return xbt_dynar_get_as(variable->content, pos, int);
 }
 
 
@@ -1349,8 +1377,7 @@ xbt_cfg_get_peer_at(xbt_cfg_t cfg, const char *name, int pos,
 #include "xbt.h"
 #include "xbt/ex.h"
 
-XBT_LOG_EXTERNAL_CATEGORY(xbt_cfg);
-XBT_LOG_DEFAULT_CATEGORY(xbt_cfg);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(xbt_cfg);
 
 XBT_TEST_SUITE("config", "Configuration support");
 
@@ -1472,7 +1499,8 @@ XBT_TEST_UNIT("use", test_config_use, "Data retrieving tests")
 
     TRY {
       xbt_cfg_set_parse(myset, "color:blue");
-    } CATCH(e) {
+    }
+    CATCH(e) {
       if (e.category != not_found_error)
         xbt_test_exception(e);
       xbt_ex_free(e);