use CRTP to factor refcounting across activity types

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

diff --git a/include/simgrid/s4u/Mailbox.hpp b/include/simgrid/s4u/Mailbox.hpp
index 069618a..989ae54 100644 (file)
--- a/include/simgrid/s4u/Mailbox.hpp
+++ b/include/simgrid/s4u/Mailbox.hpp
@@ -6,8 +6,10 @@
 #ifndef SIMGRID_S4U_MAILBOX_HPP
 #define SIMGRID_S4U_MAILBOX_HPP
 
-#include <xbt/string.hpp>
+#include <simgrid/forward.h>
+
 #include <simgrid/s4u/Actor.hpp>
+#include <xbt/string.hpp>
 
 #include <string>
 
@@ -26,7 +28,7 @@ class XBT_PUBLIC Mailbox {
 
 public:
   /** private function, do not use. FIXME: make me protected */
-  kernel::activity::MailboxImpl* get_impl() { return pimpl_; }
+  kernel::activity::MailboxImpl* get_impl() const { return pimpl_; }
 
   /** @brief Retrieves the name of that mailbox as a C++ string */
   const xbt::string& get_name() const;