Update copyright lines for 2022.

[simgrid.git] / include / simgrid / s4u / Exec.hpp

diff --git a/include/simgrid/s4u/Exec.hpp b/include/simgrid/s4u/Exec.hpp
index 14c173b..754b4bd 100644 (file)
--- a/include/simgrid/s4u/Exec.hpp
+++ b/include/simgrid/s4u/Exec.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017-2021. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2017-2022. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -42,13 +42,15 @@ protected:
 
   void reset() const;
 
+  static xbt::signal<void(Exec const&)> on_start;
+
 public:
 #ifndef DOXYGEN
   Exec(Exec const&) = delete;
   Exec& operator=(Exec const&) = delete;
 #endif
   /*! Signal fired each time that an execution actually starts (no veto) */
-  static xbt::signal<void(Exec const&)> on_start;
+  static void on_start_cb(const std::function<void(Exec const&)>& cb) { on_start.connect(cb); }
 
   static ExecPtr init();
   Exec* start() override;