X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/eb9843bb5d46f053935c36f741d37f21520c1e96..78aa51887c68ebffc0a7e2418e1105a5baa41c1c:/src/instr/instr_interface.c

diff --git a/src/instr/instr_interface.c b/src/instr/instr_interface.c
index 4472a8285b..00ac548987 100644
--- a/src/instr/instr_interface.c
+++ b/src/instr/instr_interface.c
@@ -162,19 +162,16 @@ static void instr_user_srcdst_variable(double time,
   }
 }
 
-
-xbt_graph_t TRACE_platform_graph (void)
-{
-  if (!TRACE_is_enabled()) return NULL;
-  return instr_routing_platform_graph ();
-}
-
-void TRACE_platform_graph_export_graphviz (xbt_graph_t g, const char *filename)
+int TRACE_platform_graph_export_graphviz (const char *filename)
 {
+  /* returns 1 if successful, 0 otherwise */
+  if (!TRACE_is_enabled()) return 0;
+  xbt_graph_t g = instr_routing_platform_graph();
+  if (g == NULL) return 0;
   instr_routing_platform_graph_export_graphviz (g, filename);
+  return 1;
 }
 
-
 /*
  * Derived functions that use instr_user_variable and TRACE_user_srcdst_variable.
  * They were previously defined as pre-processors directives, but were transformed