Implement I/O as asynchronous activities

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

diff --git a/include/simgrid/s4u/Activity.hpp b/include/simgrid/s4u/Activity.hpp
index 432a52b..615f7bb 100644 (file)
--- a/include/simgrid/s4u/Activity.hpp
+++ b/include/simgrid/s4u/Activity.hpp
@@ -33,6 +33,9 @@ class XBT_PUBLIC Activity {
   friend Exec;
   friend XBT_PUBLIC void intrusive_ptr_release(Exec * e);
   friend XBT_PUBLIC void intrusive_ptr_add_ref(Exec * e);
+  friend Io;
+  friend XBT_PUBLIC void intrusive_ptr_release(Io* i);
+  friend XBT_PUBLIC void intrusive_ptr_add_ref(Io* i);
 
 protected:
   Activity()  = default;
@@ -57,7 +60,7 @@ public:
    *  Raises: timeout exception.*/
   virtual Activity* wait(double timeout) = 0;
   /** Cancel that activity */
-  //virtual void cancel();
+  virtual Activity* cancel() = 0;
   /** Retrieve the current state of the activity */
   Activity::State get_state() { return state_; }
 
@@ -98,7 +101,7 @@ public:
 private:
   simgrid::kernel::activity::ActivityImplPtr pimpl_ = nullptr;
   Activity::State state_                            = Activity::State::INITED;
-  double remains_ = 0;
+  double remains_                                   = 0;
   void* user_data_                                  = nullptr;
 }; // class