-/* Copyright (c) 2009-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2009-2021. 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 "simgrid/kernel/routing/DijkstraZone.hpp"
#include "simgrid/kernel/routing/NetPoint.hpp"
#include "src/surf/network_interface.hpp"
-#include "src/surf/xml/platf_private.hpp"
#include "surf/surf.hpp"
+#include "xbt/string.hpp"
-#include <cfloat>
+#include <climits>
#include <queue>
#include <vector>
class GraphNodeData {
public:
- GraphNodeData(int id) : id_(id) {}
- int id_;
- int graph_id_ = -1; /* used for caching internal graph id's */
+ explicit GraphNodeData(unsigned long id) : id_(id) {}
+ unsigned long id_;
+ unsigned long graph_id_ = UINT_MAX; /* used for caching internal graph id's */
};
-DijkstraZone::DijkstraZone(NetZoneImpl* father, std::string name, bool cached)
- : RoutedZone(father, name), cached_(cached)
+void DijkstraZone::route_graph_delete(xbt_graph_t g)
{
+ xbt_graph_free_graph(
+ g, [](void* n) { delete static_cast<GraphNodeData*>(n); }, [](void* e) { delete static_cast<Route*>(e); },
+ nullptr);
}
-static void graph_node_data_free(void* n)
-{
- delete static_cast<simgrid::kernel::routing::GraphNodeData*>(n);
-}
-
-static void graph_edge_data_free(void* e)
-{
- delete static_cast<simgrid::kernel::routing::RouteCreationArgs*>(e);
-}
-
-DijkstraZone::~DijkstraZone()
-{
- xbt_graph_free_graph(route_graph_, &graph_node_data_free, &graph_edge_data_free, nullptr);
-}
-
-void DijkstraZone::seal()
+void DijkstraZone::do_seal()
{
unsigned int cursor;
xbt_node_t node = nullptr;
- /* Create the topology graph */
- if (not route_graph_)
- route_graph_ = xbt_graph_new_graph(1, nullptr);
-
/* Add the loopback if needed */
- if (surf_network_model->loopback_ && hierarchy_ == RoutingMode::base) {
- xbt_dynar_foreach (xbt_graph_get_nodes(route_graph_), cursor, node) {
-
- bool found = false;
+ if (get_network_model()->loopback_ && get_hierarchy() == RoutingMode::base) {
+ xbt_dynar_foreach (xbt_graph_get_nodes(route_graph_.get()), cursor, node) {
+ bool found = false;
xbt_edge_t edge = nullptr;
unsigned int cursor2;
xbt_dynar_foreach (xbt_graph_node_get_outedges(node), cursor2, edge) {
- if (xbt_graph_edge_get_target(edge) == node) {
+ if (xbt_graph_edge_get_target(edge) == node) { // There is an edge from node to itself
found = true;
break;
}
}
if (not found) {
- RouteCreationArgs* e_route = new simgrid::kernel::routing::RouteCreationArgs();
- e_route->link_list.push_back(surf_network_model->loopback_);
- xbt_graph_new_edge(route_graph_, node, node, e_route);
+ auto* route = new Route();
+ route->link_list_.push_back(get_network_model()->loopback_);
+ xbt_graph_new_edge(route_graph_.get(), node, node, route);
}
}
}
/* initialize graph indexes in nodes after graph has been built */
- xbt_dynar_t nodes = xbt_graph_get_nodes(route_graph_);
+ const_xbt_dynar_t nodes = xbt_graph_get_nodes(route_graph_.get());
xbt_dynar_foreach (nodes, cursor, node) {
- GraphNodeData* data = static_cast<GraphNodeData*>(xbt_graph_node_get_data(node));
- data->graph_id_ = cursor;
+ auto* data = static_cast<GraphNodeData*>(xbt_graph_node_get_data(node));
+ data->graph_id_ = cursor;
}
}
-xbt_node_t DijkstraZone::route_graph_new_node(int id)
+xbt_node_t DijkstraZone::route_graph_new_node(unsigned long id)
{
- xbt_node_t node = xbt_graph_new_node(route_graph_, new GraphNodeData(id));
+ xbt_node_t node = xbt_graph_new_node(route_graph_.get(), new GraphNodeData(id));
graph_node_map_.emplace(id, node);
return node;
}
-xbt_node_t DijkstraZone::node_map_search(int id)
+xbt_node_t DijkstraZone::node_map_search(unsigned long id)
{
auto ret = graph_node_map_.find(id);
return ret == graph_node_map_.end() ? nullptr : ret->second;
/* Parsing */
-void DijkstraZone::get_local_route(NetPoint* src, NetPoint* dst, RouteCreationArgs* route, double* lat)
+void DijkstraZone::get_local_route(const NetPoint* src, const NetPoint* dst, Route* route, double* lat)
{
get_route_check_params(src, dst);
- int src_id = src->id();
- int dst_id = dst->id();
+ unsigned long src_id = src->id();
+ unsigned long dst_id = dst->id();
- xbt_dynar_t nodes = xbt_graph_get_nodes(route_graph_);
+ const_xbt_dynar_t nodes = xbt_graph_get_nodes(route_graph_.get());
/* Use the graph_node id mapping set to quickly find the nodes */
- xbt_node_t src_elm = node_map_search(src_id);
- xbt_node_t dst_elm = node_map_search(dst_id);
+ const s_xbt_node_t* src_elm = node_map_search(src_id);
+ const s_xbt_node_t* dst_elm = node_map_search(dst_id);
- int src_node_id = static_cast<GraphNodeData*>(xbt_graph_node_get_data(src_elm))->graph_id_;
- int dst_node_id = static_cast<GraphNodeData*>(xbt_graph_node_get_data(dst_elm))->graph_id_;
+ unsigned long src_node_id = static_cast<GraphNodeData*>(xbt_graph_node_get_data(src_elm))->graph_id_;
+ unsigned long dst_node_id = static_cast<GraphNodeData*>(xbt_graph_node_get_data(dst_elm))->graph_id_;
/* if the src and dst are the same */
if (src_node_id == dst_node_id) {
-
- xbt_node_t node_s_v = xbt_dynar_get_as(nodes, src_node_id, xbt_node_t);
- xbt_node_t node_e_v = xbt_dynar_get_as(nodes, dst_node_id, xbt_node_t);
- xbt_edge_t edge = xbt_graph_get_edge(route_graph_, node_s_v, node_e_v);
+ const s_xbt_node_t* node_s_v = xbt_dynar_get_as(nodes, src_node_id, xbt_node_t);
+ const s_xbt_node_t* node_e_v = xbt_dynar_get_as(nodes, dst_node_id, xbt_node_t);
+ const s_xbt_edge_t* edge = xbt_graph_get_edge(route_graph_.get(), node_s_v, node_e_v);
if (edge == nullptr)
- THROWF(arg_error, 0, "No route from '%s' to '%s'", src->get_cname(), dst->get_cname());
+ throw std::invalid_argument(xbt::string_printf("No route from '%s' to '%s'", src->get_cname(), dst->get_cname()));
- RouteCreationArgs* e_route = static_cast<RouteCreationArgs*>(xbt_graph_edge_get_data(edge));
+ const Route* e_route = static_cast<Route*>(xbt_graph_edge_get_data(edge));
- for (auto const& link : e_route->link_list) {
- route->link_list.insert(route->link_list.begin(), link);
- if (lat)
- *lat += static_cast<resource::LinkImpl*>(link)->get_latency();
- }
+ insert_link_latency(route->link_list_, e_route->link_list_, lat);
}
- auto elm = route_cache_.emplace(src_id, std::vector<int>());
- std::vector<int>& pred_arr = elm.first->second;
+ auto elm = route_cache_.emplace(src_id, std::vector<unsigned long>());
+ std::vector<unsigned long>& pred_arr = elm.first->second;
if (elm.second) { /* new element was inserted (not cached mode, or cache miss) */
- int nr_nodes = xbt_dynar_length(nodes);
- std::vector<double> cost_arr(nr_nodes); /* link cost from src to other hosts */
+ unsigned long nr_nodes = xbt_dynar_length(nodes);
+ std::vector<unsigned long> cost_arr(nr_nodes); /* link cost from src to other hosts */
pred_arr.resize(nr_nodes); /* predecessors in path from src */
- typedef std::pair<double, int> Qelt;
- std::priority_queue<Qelt, std::vector<Qelt>, std::greater<Qelt>> pqueue;
+ using Qelt = std::pair<double, unsigned long>;
+ std::priority_queue<Qelt, std::vector<Qelt>, std::greater<>> pqueue;
/* initialize */
- cost_arr[src_node_id] = 0.0;
+ cost_arr[src_node_id] = 0;
- for (int i = 0; i < nr_nodes; i++) {
+ for (unsigned long i = 0; i < nr_nodes; i++) {
if (i != src_node_id) {
- cost_arr[i] = DBL_MAX;
+ cost_arr[i] = ULONG_MAX;
}
pred_arr[i] = 0;
/* apply dijkstra using the indexes from the graph's node array */
while (not pqueue.empty()) {
- int v_id = pqueue.top().second;
+ unsigned long v_id = pqueue.top().second;
pqueue.pop();
- xbt_node_t v_node = xbt_dynar_get_as(nodes, v_id, xbt_node_t);
- xbt_edge_t edge = nullptr;
+ const s_xbt_node_t* v_node = xbt_dynar_get_as(nodes, v_id, xbt_node_t);
+ xbt_edge_t edge = nullptr;
unsigned int cursor;
xbt_dynar_foreach (xbt_graph_node_get_outedges(v_node), cursor, edge) {
- xbt_node_t u_node = xbt_graph_edge_get_target(edge);
- GraphNodeData* data = static_cast<GraphNodeData*>(xbt_graph_node_get_data(u_node));
- int u_id = data->graph_id_;
- RouteCreationArgs* tmp_e_route = static_cast<RouteCreationArgs*>(xbt_graph_edge_get_data(edge));
- int cost_v_u = tmp_e_route->link_list.size(); /* count of links, old model assume 1 */
+ const s_xbt_node_t* u_node = xbt_graph_edge_get_target(edge);
+ const GraphNodeData* data = static_cast<GraphNodeData*>(xbt_graph_node_get_data(u_node));
+ unsigned long u_id = data->graph_id_;
+ const Route* tmp_e_route = static_cast<Route*>(xbt_graph_edge_get_data(edge));
+ unsigned long cost_v_u = tmp_e_route->link_list_.size(); /* count of links, old model assume 1 */
if (cost_v_u + cost_arr[v_id] < cost_arr[u_id]) {
pred_arr[u_id] = v_id;
}
/* compose route path with links */
- NetPoint* gw_src = nullptr;
- NetPoint* gw_dst;
- NetPoint* first_gw = nullptr;
+ NetPoint* gw_src = nullptr;
+ NetPoint* first_gw = nullptr;
- for (int v = dst_node_id; v != src_node_id; v = pred_arr[v]) {
- xbt_node_t node_pred_v = xbt_dynar_get_as(nodes, pred_arr[v], xbt_node_t);
- xbt_node_t node_v = xbt_dynar_get_as(nodes, v, xbt_node_t);
- xbt_edge_t edge = xbt_graph_get_edge(route_graph_, node_pred_v, node_v);
+ for (unsigned long v = dst_node_id; v != src_node_id; v = pred_arr[v]) {
+ const s_xbt_node_t* node_pred_v = xbt_dynar_get_as(nodes, pred_arr[v], xbt_node_t);
+ const s_xbt_node_t* node_v = xbt_dynar_get_as(nodes, v, xbt_node_t);
+ const s_xbt_edge_t* edge = xbt_graph_get_edge(route_graph_.get(), node_pred_v, node_v);
if (edge == nullptr)
- THROWF(arg_error, 0, "No route from '%s' to '%s'", src->get_cname(), dst->get_cname());
+ throw std::invalid_argument(xbt::string_printf("No route from '%s' to '%s'", src->get_cname(), dst->get_cname()));
- RouteCreationArgs* e_route = static_cast<RouteCreationArgs*>(xbt_graph_edge_get_data(edge));
+ const Route* e_route = static_cast<Route*>(xbt_graph_edge_get_data(edge));
- NetPoint* prev_gw_src = gw_src;
- gw_src = e_route->gw_src;
- gw_dst = e_route->gw_dst;
+ const NetPoint* prev_gw_src = gw_src;
+ gw_src = e_route->gw_src_;
+ NetPoint* gw_dst = e_route->gw_dst_;
if (v == dst_node_id)
first_gw = gw_dst;
- if (hierarchy_ == RoutingMode::recursive && v != dst_node_id && gw_dst->get_name() != prev_gw_src->get_name()) {
+ if (get_hierarchy() == RoutingMode::recursive && v != dst_node_id &&
+ gw_dst->get_name() != prev_gw_src->get_name()) {
std::vector<resource::LinkImpl*> e_route_as_to_as;
- NetPoint* gw_dst_net_elm = nullptr;
- NetPoint* prev_gw_src_net_elm = nullptr;
+ const NetPoint* gw_dst_net_elm = nullptr;
+ const NetPoint* prev_gw_src_net_elm = nullptr;
get_global_route(gw_dst_net_elm, prev_gw_src_net_elm, e_route_as_to_as, nullptr);
- auto pos = route->link_list.begin();
- for (auto const& link : e_route_as_to_as) {
- route->link_list.insert(pos, link);
- if (lat)
- *lat += link->get_latency();
- pos++;
- }
+ std::reverse(begin(e_route_as_to_as), end(e_route_as_to_as));
+ insert_link_latency(route->link_list_, e_route_as_to_as, lat);
}
- for (auto const& link : e_route->link_list) {
- route->link_list.insert(route->link_list.begin(), link);
- if (lat)
- *lat += static_cast<resource::LinkImpl*>(link)->get_latency();
- }
+ insert_link_latency(route->link_list_, e_route->link_list_, lat);
}
- if (hierarchy_ == RoutingMode::recursive) {
- route->gw_src = gw_src;
- route->gw_dst = first_gw;
+ if (get_hierarchy() == RoutingMode::recursive) {
+ route->gw_src_ = gw_src;
+ route->gw_dst_ = first_gw;
}
if (not cached_)
}
void DijkstraZone::add_route(NetPoint* src, NetPoint* dst, NetPoint* gw_src, NetPoint* gw_dst,
- std::vector<resource::LinkImpl*>& link_list, bool symmetrical)
+ const std::vector<s4u::LinkInRoute>& link_list, bool symmetrical)
{
add_route_check_params(src, dst, gw_src, gw_dst, link_list, symmetrical);
- if (not route_graph_)
- route_graph_ = xbt_graph_new_graph(1, nullptr);
+ new_edge(src->id(), dst->id(),
+ new_extended_route(get_hierarchy(), gw_src, gw_dst, get_link_list_impl(link_list, false), true));
- new_edge(src->id(), dst->id(), new_extended_route(hierarchy_, src, dst, gw_src, gw_dst, link_list, symmetrical, 1));
-
- if (symmetrical == true)
- new_edge(dst->id(), src->id(), new_extended_route(hierarchy_, dst, src, gw_dst, gw_src, link_list, symmetrical, 0));
+ if (symmetrical)
+ new_edge(dst->id(), src->id(),
+ new_extended_route(get_hierarchy(), gw_dst, gw_src, get_link_list_impl(link_list, true), false));
}
-void DijkstraZone::new_edge(int src_id, int dst_id, simgrid::kernel::routing::RouteCreationArgs* route)
+void DijkstraZone::new_edge(unsigned long src_id, unsigned long dst_id, Route* route)
{
- XBT_DEBUG("Create Route from '%d' to '%d'", src_id, dst_id);
+ XBT_DEBUG("Create Route from '%lu' to '%lu'", src_id, dst_id);
// Get the extremities, or create them if they don't exist yet
xbt_node_t src = node_map_search(src_id);
if (src == nullptr)
- src = this->route_graph_new_node(src_id);
+ src = route_graph_new_node(src_id);
xbt_node_t dst = node_map_search(dst_id);
if (dst == nullptr)
- dst = this->route_graph_new_node(dst_id);
+ dst = route_graph_new_node(dst_id);
// Make sure that this graph edge was not already added to the graph
- if (xbt_graph_get_edge(route_graph_, src, dst) != nullptr) {
- if (route->gw_dst == nullptr || route->gw_src == nullptr)
- THROWF(arg_error, 0, "Route from %s to %s already exists", route->src->get_cname(), route->dst->get_cname());
+ if (xbt_graph_get_edge(route_graph_.get(), src, dst) != nullptr) {
+ if (route->gw_dst_ == nullptr || route->gw_src_ == nullptr)
+ throw std::invalid_argument(
+ xbt::string_printf("Route from %s to %s already exists", route->src_->get_cname(), route->dst_->get_cname()));
else
- THROWF(arg_error, 0, "Route from %s@%s to %s@%s already exists", route->src->get_cname(),
- route->gw_src->get_cname(), route->dst->get_cname(), route->gw_dst->get_cname());
+ throw std::invalid_argument(xbt::string_printf("Route from %s@%s to %s@%s already exists",
+ route->src_->get_cname(), route->gw_src_->get_cname(),
+ route->dst_->get_cname(), route->gw_dst_->get_cname()));
}
// Finally add it
- xbt_graph_new_edge(route_graph_, src, dst, route);
-}
+ xbt_graph_new_edge(route_graph_.get(), src, dst, route);
}
+} // namespace routing
+} // namespace kernel
+
+namespace s4u {
+NetZone* create_dijkstra_zone(const std::string& name, bool cache)
+{
+ return (new kernel::routing::DijkstraZone(name, cache))->get_iface();
}
-} // namespace
+} // namespace s4u
+
+} // namespace simgrid
