- explicit Io(sg_size_t size, OpType type) : Activity(), size_(size), type_(type) {}
-public:
- friend XBT_PUBLIC void intrusive_ptr_release(simgrid::s4u::Io* i);
- friend XBT_PUBLIC void intrusive_ptr_add_ref(simgrid::s4u::Io* i);
- friend Storage; // Factory of IOs