added circle placement for ns3 wifi nodes

[simgrid.git] / include / simgrid / simix.hpp

diff --git a/include/simgrid/simix.hpp b/include/simgrid/simix.hpp
index 115fdff27c6cbae415b39fd3f923f631c4a8a602..db2d157f2708ebaefdb13523aee4573b25387c15 100644 (file)
--- a/include/simgrid/simix.hpp
+++ b/include/simgrid/simix.hpp
@@ -11,6 +11,7 @@
 #include <xbt/functional.hpp>
 #include <xbt/future.hpp>
 #include <xbt/signal.hpp>
+#include <xbt/utility.hpp>
 
 #include <boost/heap/fibonacci_heap.hpp>
 #include <string>
@@ -109,7 +110,7 @@ public:
   Timer(double date, simgrid::xbt::Task<void()>&& callback) : date(date), callback(std::move(callback)) {}
 
   simgrid::xbt::Task<void()> callback;
-  double get_date() { return date; }
+  double get_date() const { return date; }
   void remove();
 
   template <class F> static inline Timer* set(double date, F callback)