tsinstance updatedto accept number of threads

graph/TSInstance.cpp

@@ -41,13 +41,13 @@ std::unique_ptr<TSInstance> TSInstance::create_synthetic_instance(const int numO
     return std::make_unique<TSInstance>(std::move(nodes), std::move(edges));
 }
 
-std::vector<std::vector<Node> > TSInstance::solve(const std::string &args) {
+std::vector<std::vector<Node> > TSInstance::solve(const std::string &args, const int num_of_threads) {
     const auto start = std::chrono::high_resolution_clock::now();
     const std::vector visitedNodes = {this->startingNode};
     this->set_min_cost(heuristic_combo());
     if (args == "p") {
         // safe threads for M2 max: <= 8
-        start_branch_parallel(visitedNodes, 0, this->startingNode, 10);
+        start_branch_parallel(visitedNodes, 0, this->startingNode, num_of_threads);
     } else {
         branch(visitedNodes, 0, this->startingNode);
     }

graph/TSInstance.h

@@ -25,7 +25,7 @@ public:
 
     static std::unique_ptr<TSInstance> create_synthetic_instance(int numOfNodes);
 
-    std::vector<std::vector<Node> > solve(const std::string& arg);
+    std::vector<std::vector<Node> > solve(const std::string& arg, int num_of_threads = 4);
 
     void branch(std::vector<Node> visitedNodes, double cost, Node &currentNode);