/* 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 "xbt/log.h"
+#include <xbt/log.h>
+
+#include <simgrid/s4u/host.hpp>
+#include <simgrid/s4u/As.hpp>
-#include "simgrid/s4u/as.hpp"
#include "src/surf/surf_routing.hpp"
#include "src/surf/network_interface.hpp" // Link FIXME: move to proper header
namespace simgrid {
namespace s4u {
- As::As(const char *name)
- : name_(xbt_strdup(name))
- {
- }
- void As::Seal()
- {
- sealed_ = true;
- }
- As::~As()
- {
- xbt_dict_cursor_t cursor = NULL;
- char *key;
- AS_t elem;
- xbt_dict_foreach(children_, cursor, key, elem) {
- delete (As*)elem;
- }
-
-
- xbt_dict_free(&children_);
- xbt_dynar_free(&vertices_);
- xbt_dynar_free(&upDownLinks);
- for (auto &kv : bypassRoutes_)
- delete kv.second;
- xbt_free(name_);
- delete netcard_;
- }
-
- xbt_dict_t As::children()
- {
- return children_;
- }
- char *As::name()
- {
- return name_;
- }
- As *As::father() {
- return father_;
- }
-
- xbt_dynar_t As::hosts()
- {
- xbt_dynar_t res = xbt_dynar_new(sizeof(sg_host_t), NULL);
-
- for (unsigned int index = 0; index < xbt_dynar_length(vertices_); index++) {
- simgrid::surf::NetCard *card = xbt_dynar_get_as(vertices_, index, simgrid::surf::NetCard*);
- simgrid::s4u::Host *host = simgrid::s4u::Host::by_name_or_null(card->name());
- if (host!=NULL)
- xbt_dynar_push(res, &host);
- }
- return res;
- }
-
- xbt_dynar_t As::getOneLinkRoutes() {
- return NULL;
- }
-
- int As::addComponent(surf::NetCard *elm) {
- xbt_dynar_push_as(vertices_, surf::NetCard*, elm);
- return xbt_dynar_length(vertices_)-1;
- }
-
- void As::addRoute(sg_platf_route_cbarg_t /*route*/){
- xbt_die("AS %s does not accept new routes (wrong class).",name_);
- }
-
- /** @brief Get the common ancestor and its first childs in each line leading to src and dst */
- static void find_common_ancestors(surf::NetCard *src, surf::NetCard *dst,
- /* OUT */ As **common_ancestor, As **src_ancestor, As **dst_ancestor)
- {
- #define ROUTING_HIERARCHY_MAXDEPTH 32 /* increase if it is not enough */
- simgrid::s4u::As *path_src[ROUTING_HIERARCHY_MAXDEPTH];
- simgrid::s4u::As *path_dst[ROUTING_HIERARCHY_MAXDEPTH];
- int index_src = 0;
- int index_dst = 0;
- simgrid::s4u::As *current_src;
- simgrid::s4u::As *current_dst;
- simgrid::s4u::As *father;
-
- /* (1) find the path to root of src and dst*/
- simgrid::s4u::As *src_as = src->containingAS();
- simgrid::s4u::As *dst_as = dst->containingAS();
-
- xbt_assert(src_as, "Host %s must be in an AS", src->name());
- xbt_assert(dst_as, "Host %s must be in an AS", dst->name());
-
- /* (2) find the path to the root routing component */
- for (simgrid::s4u::As *current = src_as; current != NULL; current = current->father()) {
- xbt_assert(index_src < ROUTING_HIERARCHY_MAXDEPTH, "ROUTING_HIERARCHY_MAXDEPTH should be increased for element %s", src->name());
- path_src[index_src++] = current;
- }
- for (simgrid::s4u::As *current = dst_as; current != NULL; current = current->father()) {
- xbt_assert(index_dst < ROUTING_HIERARCHY_MAXDEPTH,"ROUTING_HIERARCHY_MAXDEPTH should be increased for path_dst");
- path_dst[index_dst++] = current;
- }
-
- /* (3) find the common father.
- * Before that, index_src and index_dst may be different, they both point to NULL in path_src/path_dst
- * So we move them down simultaneously as long as they point to the same content.
- */
- do {
- current_src = path_src[--index_src];
- current_dst = path_dst[--index_dst];
- } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
-
- /* (4) if we did not find a difference (index_src or index_dst went to 0), both elements are in the same AS */
- if (current_src == current_dst)
- father = current_src;
- else // we found a difference
- father = path_src[index_src + 1];
-
- /* (5) result generation */
- *common_ancestor = father; /* the common father of src and dst */
- *src_ancestor = current_src; /* the first different father of src */
- *dst_ancestor = current_dst; /* the first different father of dst */
- #undef ROUTING_HIERARCHY_MAXDEPTH
- }
-
-
- /* PRECONDITION: this is the common ancestor of src and dst */
- std::vector<surf::Link*> *As::getBypassRoute(surf::NetCard *src, surf::NetCard *dst)
- {
- // If never set a bypass route return NULL without any further computations
- XBT_DEBUG("generic_get_bypassroute from %s to %s", src->name(), dst->name());
- if (bypassRoutes_.empty())
- return nullptr;
-
- std::vector<surf::Link*> *bypassedRoute = nullptr;
-
- if(dst->containingAS() == this && src->containingAS() == this ){
- if (bypassRoutes_.find({src->name(),dst->name()}) != bypassRoutes_.end()) {
- bypassedRoute = bypassRoutes_.at({src->name(),dst->name()});
- XBT_DEBUG("Found a bypass route with %zu links",bypassedRoute->size());
- }
- return bypassedRoute;
- }
-
- /* (2) find the path to the root routing component */
- std::vector<As*> path_src;
- As *current = src->containingAS();
- while (current != NULL) {
- path_src.push_back(current);
- current = current->father_;
- }
-
- std::vector<As*> path_dst;
- current = dst->containingAS();
- while (current != NULL) {
- path_dst.push_back(current);
- current = current->father_;
- }
-
- /* (3) find the common father */
- while (path_src.size() > 1 && path_dst.size() >1
- && path_src.at(path_src.size() -1) == path_dst.at(path_dst.size() -1)) {
- path_src.pop_back();
- path_dst.pop_back();
- }
-
- int max_index_src = path_src.size() - 1;
- int max_index_dst = path_dst.size() - 1;
-
- int max_index = std::max(max_index_src, max_index_dst);
-
- for (int max = 0; max <= max_index; max++) {
- for (int i = 0; i < max; i++) {
- if (i <= max_index_src && max <= max_index_dst) {
- const std::pair<std::string, std::string> key = {path_src.at(i)->name_, path_dst.at(max)->name_};
- if (bypassRoutes_.find(key) != bypassRoutes_.end())
- bypassedRoute = bypassRoutes_.at(key);
- }
- if (bypassedRoute)
- break;
- if (max <= max_index_src && i <= max_index_dst) {
- const std::pair<std::string, std::string> key = {path_src.at(max)->name_, path_dst.at(i)->name_};
- if (bypassRoutes_.find(key) != bypassRoutes_.end())
- bypassedRoute = bypassRoutes_.at(key);
- }
- if (bypassedRoute)
- break;
- }
+ As::As(As* father, const char* name) : father_(father), name_(xbt_strdup(name))
+ {
+ }
+ void As::seal()
+ {
+ sealed_ = true;
+ }
+ As::~As()
+ {
+ xbt_dict_cursor_t cursor = nullptr;
+ char* key;
+ AS_t elem;
+ xbt_dict_foreach(children_, cursor, key, elem) { delete (As*)elem; }
+
+ xbt_dict_free(&children_);
+ for (auto& kv : bypassRoutes_)
+ delete kv.second;
+ xbt_free(name_);
+ }
- if (bypassedRoute)
- break;
+ xbt_dict_t As::children()
+ {
+ return children_;
+ }
+ char* As::name()
+ {
+ return name_;
+ }
+ As* As::father()
+ {
+ return father_;
+ }
- if (max <= max_index_src && max <= max_index_dst) {
- const std::pair<std::string, std::string> key = {path_src.at(max)->name_, path_dst.at(max)->name_};
- if (bypassRoutes_.find(key) != bypassRoutes_.end())
- bypassedRoute = bypassRoutes_.at(key);
- }
- if (bypassedRoute)
- break;
- }
+ xbt_dynar_t As::hosts()
+ {
+ xbt_dynar_t res = xbt_dynar_new(sizeof(sg_host_t), nullptr);
- return bypassedRoute;
+ for (auto card : vertices_) {
+ s4u::Host* host = simgrid::s4u::Host::by_name_or_null(card->name());
+ if (host != nullptr)
+ xbt_dynar_push(res, &host);
}
+ return res;
+ }
- void As::addBypassRoute(sg_platf_route_cbarg_t e_route){
- const char *src = e_route->src;
- const char *dst = e_route->dst;
-
- /* Argument validity checks */
- if (e_route->gw_dst) {
- XBT_DEBUG("Load bypassASroute from %s@%s to %s@%s",
- src, e_route->gw_src->name(), dst, e_route->gw_dst->name());
- xbt_assert(!e_route->link_list->empty(), "Bypass route between %s@%s and %s@%s cannot be empty.",
- src, e_route->gw_src->name(), dst, e_route->gw_dst->name());
- xbt_assert(bypassRoutes_.find({src,dst}) == bypassRoutes_.end(), "The bypass route between %s@%s and %s@%s already exists.",
- src, e_route->gw_src->name(), dst, e_route->gw_dst->name());
- } else {
- XBT_DEBUG("Load bypassRoute from %s to %s", src, dst);
- xbt_assert(!e_route->link_list->empty(), "Bypass route between %s and %s cannot be empty.", src, dst);
- xbt_assert(bypassRoutes_.find({src,dst}) == bypassRoutes_.end(), "The bypass route between %s and %s already exists.", src, dst);
- }
+ int As::addComponent(kernel::routing::NetCard* elm)
+ {
+ vertices_.push_back(elm);
+ return vertices_.size() - 1; // The rank of the newly created object
+ }
- /* Build a copy that will be stored in the dict */
- std::vector<surf::Link*> *newRoute = new std::vector<surf::Link*>();
- for (auto link: *e_route->link_list)
- newRoute->push_back(link);
+ void As::addRoute(sg_platf_route_cbarg_t /*route*/)
+ {
+ xbt_die("AS %s does not accept new routes (wrong class).", name_);
+ }
- /* Store it */
- bypassRoutes_.insert({{src,dst}, newRoute});
+ void As::addBypassRoute(sg_platf_route_cbarg_t e_route)
+ {
+ /* Argument validity checks */
+ if (e_route->gw_dst) {
+ XBT_DEBUG("Load bypassASroute from %s@%s to %s@%s", e_route->src->name().c_str(), e_route->gw_src->name().c_str(),
+ e_route->dst->name().c_str(), e_route->gw_dst->name().c_str());
+ xbt_assert(!e_route->link_list->empty(), "Bypass route between %s@%s and %s@%s cannot be empty.",
+ e_route->src->name().c_str(), e_route->gw_src->name().c_str(), e_route->dst->name().c_str(),
+ e_route->gw_dst->name().c_str());
+ xbt_assert(bypassRoutes_.find({e_route->src, e_route->dst}) == bypassRoutes_.end(),
+ "The bypass route between %s@%s and %s@%s already exists.", e_route->src->name().c_str(),
+ e_route->gw_src->name().c_str(), e_route->dst->name().c_str(), e_route->gw_dst->name().c_str());
+ } else {
+ XBT_DEBUG("Load bypassRoute from %s to %s", e_route->src->name().c_str(), e_route->dst->name().c_str());
+ xbt_assert(!e_route->link_list->empty(), "Bypass route between %s and %s cannot be empty.",
+ e_route->src->name().c_str(), e_route->dst->name().c_str());
+ xbt_assert(bypassRoutes_.find({e_route->src, e_route->dst}) == bypassRoutes_.end(),
+ "The bypass route between %s and %s already exists.", e_route->src->name().c_str(),
+ e_route->dst->name().c_str());
}
- /**
- * \brief Recursive function for getRouteAndLatency
- *
- * \param src the source host
- * \param dst the destination host
- * \param links Where to store the links and the gw information
- * \param latency If not NULL, the latency of all links will be added in it
- */
- void As::getRouteRecursive(surf::NetCard *src, surf::NetCard *dst,
- /* OUT */ std::vector<surf::Link*> * links, double *latency)
- {
- s_sg_platf_route_cbarg_t route;
- memset(&route,0,sizeof(route));
-
- XBT_DEBUG("Solve route/latency \"%s\" to \"%s\"", src->name(), dst->name());
-
- /* Find how src and dst are interconnected */
- simgrid::s4u::As *common_ancestor, *src_ancestor, *dst_ancestor;
- find_common_ancestors(src, dst, &common_ancestor, &src_ancestor, &dst_ancestor);
- XBT_DEBUG("elements_father: common ancestor '%s' src ancestor '%s' dst ancestor '%s'",
- common_ancestor->name_, src_ancestor->name_, dst_ancestor->name_);
-
- /* Check whether a direct bypass is defined. If so, use it and bail out */
- std::vector<surf::Link*> *bypassed_route = common_ancestor->getBypassRoute(src, dst);
- if (nullptr != bypassed_route) {
- for (surf::Link *link : *bypassed_route) {
- links->push_back(link);
- if (latency)
- *latency += link->getLatency();
- }
- return;
- }
-
- /* If src and dst are in the same AS, life is good */
- if (src_ancestor == dst_ancestor) { /* SURF_ROUTING_BASE */
- route.link_list = links;
- common_ancestor->getRouteAndLatency(src, dst, &route, latency);
- return;
- }
-
- /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
-
- route.link_list = new std::vector<surf::Link*>();
-
- common_ancestor->getRouteAndLatency(src_ancestor->netcard_, dst_ancestor->netcard_, &route, latency);
- xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
- "bad gateways for route from \"%s\" to \"%s\"", src->name(), dst->name());
-
- /* If source gateway is not our source, we have to recursively find our way up to this point */
- if (src != route.gw_src)
- getRouteRecursive(src, route.gw_src, links, latency);
- for (auto link: *route.link_list)
- links->push_back(link);
-
- /* If dest gateway is not our destination, we have to recursively find our way from this point */
- if (route.gw_dst != dst)
- getRouteRecursive(route.gw_dst, dst, links, latency);
-
- }
+ /* Build a copy that will be stored in the dict */
+ std::vector<surf::Link*>* newRoute = new std::vector<surf::Link*>();
+ for (auto link : *e_route->link_list)
+ newRoute->push_back(link);
+ /* Store it */
+ bypassRoutes_.insert({{e_route->src, e_route->dst}, newRoute});
}
-};
+} }; // namespace simgrid::s4u
