friend Comm;
friend XBT_PUBLIC void intrusive_ptr_release(Comm * c);
friend XBT_PUBLIC void intrusive_ptr_add_ref(Comm * c);
friend Comm;
friend XBT_PUBLIC void intrusive_ptr_release(Comm * c);
friend XBT_PUBLIC void intrusive_ptr_add_ref(Comm * c);
friend Io;
friend XBT_PUBLIC void intrusive_ptr_release(Io* i);
friend XBT_PUBLIC void intrusive_ptr_add_ref(Io* i);
friend Io;
friend XBT_PUBLIC void intrusive_ptr_release(Io* i);
friend XBT_PUBLIC void intrusive_ptr_add_ref(Io* i);