+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_dotparse, sd, "Parsing DOT files");
+
+namespace simgrid {
+namespace s4u {
+
+std::vector<ActivityPtr> create_DAG_from_dot(const std::string& filename)
+{
+ FILE* in_file = fopen(filename.c_str(), "r");
+ xbt_assert(in_file != nullptr, "Failed to open file: %s", filename.c_str());
+
+ Agraph_t* dag_dot = agread(in_file, NIL(Agdisc_t*));
+
+ std::unordered_map<std::string, ActivityPtr> activities;
+ std::vector<ActivityPtr> dag;
+
+ ActivityPtr root;
+ ActivityPtr end;
+ ActivityPtr act;
+ /* Create all the nodes */
+ Agnode_t* node = nullptr;
+ for (node = agfstnode(dag_dot); node; node = agnxtnode(dag_dot, node)) {
+ char* name = agnameof(node);
+ double amount = atof(agget(node, (char*)"size"));
+
+ if (activities.find(name) == activities.end()) {
+ XBT_DEBUG("See <Exec id = %s amount = %.0f>", name, amount);
+ act = Exec::init()->set_name(name)->set_flops_amount(amount)->vetoable_start();
+ activities.insert({std::string(name), act});
+ if (strcmp(name, "root") && strcmp(name, "end"))
+ dag.push_back(act);
+ } else {
+ XBT_WARN("Exec '%s' is defined more than once", name);
+ }
+ }
+ /*Check if 'root' and 'end' nodes have been explicitly declared. If not, create them. */
+ if (activities.find("root") == activities.end())
+ root = Exec::init()->set_name("root")->set_flops_amount(0)->vetoable_start();
+ else
+ root = activities.at("root");
+
+ if (activities.find("end") == activities.end())
+ end = Exec::init()->set_name("end")->set_flops_amount(0)->vetoable_start();
+ else
+ end = activities.at("end");
+
+ /* Create edges */
+ std::vector<Agedge_t*> edges;
+ for (node = agfstnode(dag_dot); node; node = agnxtnode(dag_dot, node)) {
+ edges.clear();
+ for (Agedge_t* edge = agfstout(dag_dot, node); edge; edge = agnxtout(dag_dot, edge))
+ edges.push_back(edge);
+
+ /* Be sure edges are sorted */
+ std::sort(edges.begin(), edges.end(), [](const Agedge_t* a, const Agedge_t* b) { return AGSEQ(a) < AGSEQ(b); });
+
+ for (Agedge_t* edge : edges) {
+ const char* src_name = agnameof(agtail(edge));
+ const char* dst_name = agnameof(aghead(edge));
+ double size = atof(agget(edge, (char*)"size"));