docs: start writing the S4U part

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

diff --git a/include/simgrid/s4u/Io.hpp b/include/simgrid/s4u/Io.hpp
index 360dd4f..b47c7e7 100644 (file)
--- a/include/simgrid/s4u/Io.hpp
+++ b/include/simgrid/s4u/Io.hpp
@@ -10,10 +10,16 @@
 #include <simgrid/s4u/Activity.hpp>
 
 #include <atomic>
+#include <string>
 
 namespace simgrid {
 namespace s4u {
 
+/** I/O Activity, representing the asynchronous disk access.
+ *
+ * They are generated from simgrid::s4u::Storage::read() and simgrid::s4u::Storage::write().
+ */
+
 class XBT_PUBLIC Io : public Activity {
 public:
   enum class OpType { READ, WRITE };
@@ -23,7 +29,7 @@ private:
 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
+  friend simgrid::s4u::Storage; // Factory of IOs
 
   ~Io() = default;