--- /dev/null
+
+#include "gtnets_simulator.h"
+#include "gtnets_interface.h"
+
+static GTSim* gtnets_sim = 0;
+
+// initialize the GTNetS interface and environment
+int gtnets_initialize(){
+ if (gtnets_sim){
+ fprintf(stderr, "gtnets already initialized.\n");
+ return -1;
+ }
+ gtnets_sim = new GTSim();
+ return 1;
+}
+
+// adds a link (argument link is just an index starting at 0...
+// add link 0, add link 1, etc.)
+int gtnets_add_link(int id, double bandwidth, double latency){
+ return gtnets_sim->add_link(id, bandwidth, latency);
+}
+
+// adds a route between a source and a destination as an array of link indices
+// (note that there is no gtnets_add_network_card(), as we discover them
+// on the fly via calls to gtnets_add_route()
+int gtnets_add_route(int src, int dst, int* links, int nlink){
+ return gtnets_sim->add_route(src, dst, links, nlink);
+}
+
+// create a new flow on a route
+// one can attach arbitrary metadata to a flow
+int gtnets_create_flow(int src, int dst, long datasize, void* metadata){
+ return gtnets_sim->create_flow(src, dst, datasize, metadata);
+}
+
+// get the time (double) until a flow completes (the first such flow)
+// if no flows exist, return -1.0
+double gtnets_get_time_to_next_flow_completion(){
+ return gtnets_sim->get_time_to_next_flow_completion();
+}
+
+// run until a flow completes (returns that flow's metadata)
+int gtnets_run_until_next_flow_completion(void ***metadata, int *number_of_flows){
+ return gtnets_sim->run_until_next_flow_completion(metadata, number_of_flows);
+}
+
+// run for a given time (double)
+int gtnets_run(Time_t deltat){
+ gtnets_sim->run(deltat);
+}
+
+// clean up
+void gtnets_finalize(){
+ if (!gtnets_sim) return;
+ gtnets_sim->finalize();
+ delete gtnets_sim;
+ gtnets_sim = 0;
+}
+
