friend XBT_PUBLIC void intrusive_ptr_release(Comm* c);
friend XBT_PUBLIC void intrusive_ptr_add_ref(Comm* c);
friend Mailbox; // Factory of comms
friend XBT_PUBLIC void intrusive_ptr_release(Comm* c);
friend XBT_PUBLIC void intrusive_ptr_add_ref(Comm* c);
friend Mailbox; // Factory of comms