Add an internal timer based on std::clock

src/cluster/cluster.cpp

@@ -4,6 +4,7 @@
  *
  * \brief Implementation of the calculation for a cluster of spheres.
  */
+#include <chrono>
 #include <cstdio>
 #include <exception>
 #include <fstream>
@@ -61,6 +62,7 @@ int cluster_jxi488_cycle(int jxi488, ScattererConfiguration *sconf, GeometryConf
  *  \param output_path: `string` Directory to write the output files in.
  */
 void cluster(string config_file, string data_file, string output_path) {
+  chrono::time_point<chrono::high_resolution_clock> t_start = chrono::high_resolution_clock::now();
   Logger *logger = new Logger(LOG_INFO);
   logger->log("INFO: making legacy configuration...", LOG_INFO);
   ScattererConfiguration *sconf = NULL;
@@ -795,6 +797,10 @@ void cluster(string config_file, string data_file, string output_path) {
   }
   delete sconf;
   delete gconf;
+  chrono::time_point<chrono::high_resolution_clock> t_end = chrono::high_resolution_clock::now();
+  const chrono::duration<double> elapsed = t_end - t_start;
+  string message = "Calculation lasted " + to_string(elapsed.count()) + ".\n";
+  logger->log(message);
   logger->log("Finished: output written to " + output_path + "/c_OCLU\n");
   delete logger;
 }