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ignorable reindent
[simgrid.git] / src / surf / surf_routing_generic.c
index 0fbcc94..0660db8 100644 (file)
@@ -53,29 +53,29 @@ int generic_parse_AS(AS_t as, network_element_t elm)
 }
 
 void generic_parse_bypassroute(AS_t rc,
-                             const char *src, const char *dst,
-                             route_t e_route)
+    const char *src, const char *dst,
+    route_t e_route)
 {
   if(e_route->dst_gateway)
-    XBT_INFO("Load bypassASroute from \"%s\" to \"%s\"", src, dst);
+    XBT_DEBUG("Load bypassASroute from \"%s\" to \"%s\"", src, dst);
   else
-    XBT_INFO("Load bypassRoute from \"%s\" to \"%s\"", src, dst);
+    XBT_DEBUG("Load bypassRoute from \"%s\" to \"%s\"", src, dst);
   xbt_dict_t dict_bypassRoutes = rc->bypassRoutes;
   char *route_name;
 
   route_name = bprintf("%s#%s", src, dst);
   xbt_assert(!xbt_dynar_is_empty(e_route->link_list),
-             "Invalid count of links, must be greater than zero (%s,%s)",
-             src, dst);
+      "Invalid count of links, must be greater than zero (%s,%s)",
+      src, dst);
   xbt_assert(!xbt_dict_get_or_null(dict_bypassRoutes, route_name),
-             "The bypass route between \"%s\"(\"%s\") and \"%s\"(\"%s\") already exists",
-             src, e_route->src_gateway->name, dst, e_route->dst_gateway->name);
+      "The bypass route between \"%s\"(\"%s\") and \"%s\"(\"%s\") already exists",
+      src, e_route->src_gateway->name, dst, e_route->dst_gateway->name);
 
   route_t new_e_route = NULL;
   if(e_route->dst_gateway)
     new_e_route =  generic_new_extended_route(SURF_ROUTING_RECURSIVE, e_route, 1);
   else
-    new_e_route =  generic_new_route(SURF_ROUTING_BASE, e_route, 1);
+    new_e_route =  generic_new_extended_route(SURF_ROUTING_BASE, e_route, 1);
 
   xbt_dynar_free(&(e_route->link_list));
   xbt_free(e_route);
@@ -100,17 +100,111 @@ route_t generic_get_bypassroute(AS_t rc, network_element_t src, network_element_
   if(no_bypassroute_declared)
     return NULL;
 
+  route_t e_route_bypass = NULL;
   xbt_dict_t dict_bypassRoutes = rc->bypassRoutes;
 
-  if (src == NULL || dst == NULL)
-    xbt_die("Ask for route \"from\"(%s) or \"to\"(%s) no found at AS \"%s\"",
-            src->name, dst->name, rc->name);
+  if(dst->rc_component == rc && src->rc_component == rc ){
+    char *route_name = bprintf("%s#%s", src->name, dst->name);
+    e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
+    if(e_route_bypass)
+      XBT_DEBUG("Find bypass route with %ld links",xbt_dynar_length(e_route_bypass->link_list));
+    free(route_name);
+  }
+  else{
+    AS_t src_as, dst_as;
+    int index_src, index_dst;
+    xbt_dynar_t path_src = NULL;
+    xbt_dynar_t path_dst = NULL;
+    AS_t current = NULL;
+    AS_t *current_src = NULL;
+    AS_t *current_dst = NULL;
+
+    if (src == NULL || dst == NULL)
+      xbt_die("Ask for route \"from\"(%s) or \"to\"(%s) no found at AS \"%s\"",
+          src->name, dst->name, rc->name);
+
+    src_as = src->rc_component;
+    dst_as = dst->rc_component;
+
+    /* (2) find the path to the root routing component */
+    path_src = xbt_dynar_new(sizeof(AS_t), NULL);
+    current = src_as;
+    while (current != NULL) {
+      xbt_dynar_push(path_src, &current);
+      current = current->routing_father;
+    }
+    path_dst = xbt_dynar_new(sizeof(AS_t), NULL);
+    current = dst_as;
+    while (current != NULL) {
+      xbt_dynar_push(path_dst, &current);
+      current = current->routing_father;
+    }
 
-  char *route_name = bprintf("%s#%s", src->name, dst->name);
-  route_t e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
-  if(e_route_bypass)
-    XBT_DEBUG("Find bypass route with %ld links",xbt_dynar_length(e_route_bypass->link_list));
-  free(route_name);
+    /* (3) find the common father */
+    index_src = path_src->used - 1;
+    index_dst = path_dst->used - 1;
+    current_src = xbt_dynar_get_ptr(path_src, index_src);
+    current_dst = xbt_dynar_get_ptr(path_dst, index_dst);
+    while (index_src >= 0 && index_dst >= 0 && *current_src == *current_dst) {
+      xbt_dynar_pop_ptr(path_src);
+      xbt_dynar_pop_ptr(path_dst);
+      index_src--;
+      index_dst--;
+      current_src = xbt_dynar_get_ptr(path_src, index_src);
+      current_dst = xbt_dynar_get_ptr(path_dst, index_dst);
+    }
+
+    int max_index_src = path_src->used - 1;
+    int max_index_dst = path_dst->used - 1;
+
+    int max_index = max(max_index_src, max_index_dst);
+    int i, max;
+
+    for (max = 0; max <= max_index; max++) {
+      for (i = 0; i < max; i++) {
+        if (i <= max_index_src && max <= max_index_dst) {
+          char *route_name = bprintf("%s#%s",
+              (*(AS_t *)
+                  (xbt_dynar_get_ptr(path_src, i)))->name,
+                  (*(AS_t *)
+                      (xbt_dynar_get_ptr(path_dst, max)))->name);
+          e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
+          xbt_free(route_name);
+        }
+        if (e_route_bypass)
+          break;
+        if (max <= max_index_src && i <= max_index_dst) {
+          char *route_name = bprintf("%s#%s",
+              (*(AS_t *)
+                  (xbt_dynar_get_ptr(path_src, max)))->name,
+                  (*(AS_t *)
+                      (xbt_dynar_get_ptr(path_dst, i)))->name);
+          e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
+          xbt_free(route_name);
+        }
+        if (e_route_bypass)
+          break;
+      }
+
+      if (e_route_bypass)
+        break;
+
+      if (max <= max_index_src && max <= max_index_dst) {
+        char *route_name = bprintf("%s#%s",
+            (*(AS_t *)
+                (xbt_dynar_get_ptr(path_src, max)))->name,
+                (*(AS_t *)
+                    (xbt_dynar_get_ptr(path_dst, max)))->name);
+        e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
+        xbt_free(route_name);
+      }
+      if (e_route_bypass)
+        break;
+    }
+
+    xbt_dynar_free(&path_src);
+    xbt_dynar_free(&path_dst);
+  }
 
   route_t new_e_route = NULL;
   if (e_route_bypass) {
@@ -120,7 +214,7 @@ route_t generic_get_bypassroute(AS_t rc, network_element_t src, network_element_
     new_e_route->src_gateway = e_route_bypass->src_gateway;
     new_e_route->dst_gateway = e_route_bypass->dst_gateway;
     new_e_route->link_list =
-        xbt_dynar_new(global_routing->size_of_link, NULL);
+        xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
     xbt_dynar_foreach(e_route_bypass->link_list, cpt, link) {
       xbt_dynar_push(new_e_route->link_list, &link);
       if (lat)
@@ -133,92 +227,45 @@ route_t generic_get_bypassroute(AS_t rc, network_element_t src, network_element_
 
 /* ************************************************************************** */
 /* ************************* GENERIC AUX FUNCTIONS ************************** */
-
-route_t
-generic_new_route(e_surf_routing_hierarchy_t hierarchy, void *data, int order)
-{
-
-  char *link_name;
-  route_t new_route;
-  unsigned int cpt;
-  xbt_dynar_t links = NULL, links_id = NULL;
-
-  new_route = xbt_new0(s_route_t, 1);
-  new_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
-
-  xbt_assert(hierarchy == SURF_ROUTING_BASE,
-             "the hierarchy type is not SURF_ROUTING_BASE");
-
-  links = ((route_t) data)->link_list;
-
-
-  links_id = new_route->link_list;
-
-  xbt_dynar_foreach(links, cpt, link_name) {
-
-    void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
-    if (link) {
-      if (order)
-        xbt_dynar_push(links_id, &link);
-      else
-        xbt_dynar_unshift(links_id, &link);
-    } else
-      THROWF(mismatch_error, 0, "Link %s not found", link_name);
-  }
-
-  return new_route;
-}
-
+/* change a route containing link names into a route containing link entities */
 route_t
 generic_new_extended_route(e_surf_routing_hierarchy_t hierarchy,
-                           void *data, int order)
-{
+    route_t routearg, int change_order) {
 
+  route_t result;
   char *link_name;
-  route_t e_route, new_e_route;
-  route_t route;
   unsigned int cpt;
-  xbt_dynar_t links = NULL, links_id = NULL;
 
-  new_e_route = xbt_new0(s_route_t, 1);
-  new_e_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
+  result = xbt_new0(s_route_t, 1);
+  result->link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 
   xbt_assert(hierarchy == SURF_ROUTING_BASE
-             || hierarchy == SURF_ROUTING_RECURSIVE,
-             "the hierarchy type is not defined");
-
-  if (hierarchy == SURF_ROUTING_BASE) {
-
-    route = (route_t) data;
-    links = route->link_list;
+      || hierarchy == SURF_ROUTING_RECURSIVE,
+      "The hierarchy of this AS is neither BASIC nor RECURSIVE, I'm lost here.");
 
-  } else if (hierarchy == SURF_ROUTING_RECURSIVE) {
+  if (hierarchy == SURF_ROUTING_RECURSIVE) {
 
-    e_route = (route_t) data;
-    xbt_assert(e_route->src_gateway
-               && e_route->dst_gateway, "bad gateway, is null");
-    links = e_route->link_list;
+    xbt_assert(routearg->src_gateway && routearg->dst_gateway,
+        "NULL is obviously a bad gateway");
 
     /* remeber not erase the gateway names */
-    new_e_route->src_gateway = e_route->src_gateway;
-    new_e_route->dst_gateway = e_route->dst_gateway;
+    result->src_gateway = routearg->src_gateway;
+    result->dst_gateway = routearg->dst_gateway;
   }
 
-  links_id = new_e_route->link_list;
-
-  xbt_dynar_foreach(links, cpt, link_name) {
+  xbt_dynar_foreach(routearg->link_list, cpt, link_name) {
 
     void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
     if (link) {
-      if (order)
-        xbt_dynar_push(links_id, &link);
+      if (change_order)
+        xbt_dynar_push(result->link_list, &link);
       else
-        xbt_dynar_unshift(links_id, &link);
+        xbt_dynar_unshift(result->link_list, &link);
     } else
       THROWF(mismatch_error, 0, "Link %s not found", link_name);
   }
 
-  return new_e_route;
+  return result;
 }
 
 void generic_free_route(route_t route)
@@ -230,7 +277,7 @@ void generic_free_route(route_t route)
 }
 
 static AS_t generic_as_exist(AS_t find_from,
-                                            AS_t to_find)
+    AS_t to_find)
 {
   //return to_find; // FIXME: BYPASSERROR OF FOREACH WITH BREAK
   xbt_dict_cursor_t cursor = NULL;
@@ -256,8 +303,8 @@ generic_autonomous_system_exist(AS_t rc, char *element)
   xbt_dict_cursor_t cursor = NULL;
   char *key;
   element_as = ((network_element_t)
-                xbt_lib_get_or_null(as_router_lib, element,
-                                    ROUTING_ASR_LEVEL))->rc_component;
+      xbt_lib_get_or_null(as_router_lib, element,
+          ROUTING_ASR_LEVEL))->rc_component;
   result = ((AS_t) - 1);
   if (element_as != rc)
     result = generic_as_exist(rc, element_as);
@@ -280,8 +327,8 @@ generic_processing_units_exist(AS_t rc, char *element)
 {
   AS_t element_as;
   element_as = ((network_element_t)
-                xbt_lib_get_or_null(host_lib,
-                                    element, ROUTING_HOST_LEVEL))->rc_component;
+      xbt_lib_get_or_null(host_lib,
+          element, ROUTING_HOST_LEVEL))->rc_component;
   if (element_as == rc)
     return element_as;
   return generic_as_exist(rc, element_as);
@@ -312,10 +359,10 @@ void generic_src_dst_check(AS_t rc, network_element_t src,
 
   if (rc != dst_as)
     xbt_die
-        ("The routing component of src'%s' and dst'%s' is not the same as the network elements belong (%s?=%s?=%s)",
-            src->name,
-            dst->name,
-            src_as->name,
-            dst_as->name,
-            rc->name);
+    ("The routing component of src'%s' and dst'%s' is not the same as the network elements belong (%s?=%s?=%s)",
+        src->name,
+        dst->name,
+        src_as->name,
+        dst_as->name,
+        rc->name);
 }