-/* Copyright (c) 2017-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2017-2021. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include <simgrid/forward.h>
#include <simgrid/s4u/Activity.hpp>
-#include <atomic>
+#include <string>
namespace simgrid {
namespace s4u {
-class XBT_PUBLIC Io : public Activity {
- explicit Io(sg_size_t size) : Activity(), size_(size) {}
-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
+/** I/O Activity, representing the asynchronous disk access.
+ *
+ * They are generated from Disk::io_init(), Disk::read() Disk::read_async(), Disk::write() and Disk::write_async().
+ */
+
+class XBT_PUBLIC Io : public Activity_T<Io> {
+#ifndef DOXYGEN
+ friend Disk; // Factory of IOs
+#endif
+ Io();
+public:
enum class OpType { READ, WRITE };
- ~Io() = default;
-
- Activity* start() override;
- Activity* wait() override;
- Activity* wait(double timeout) override;
- Activity* cancel() override;
-
- double get_remaining() override;
- sg_size_t get_performed_ioops();
- IoPtr set_io_type(OpType type);
-
-private:
- sg_size_t size_ = 0;
- sg_storage_t storage_ = nullptr;
- std::string name_ = "";
- OpType type_ = OpType::READ;
- std::atomic_int_fast32_t refcount_{0};
-}; // class
-}
-}; // Namespace simgrid::s4u
+
+ static xbt::signal<void(Io const&)> on_start;
+ static xbt::signal<void(Io const&)> on_completion;
+
+ static IoPtr init();
+ Io* start() override;
+ Io* wait() override;
+ Io* wait_for(double timeout) override;
+ Io* cancel() override;
+
+ double get_remaining() const override;
+ sg_size_t get_performed_ioops() const;
+ IoPtr set_disk(const_sg_disk_t disk);
+ IoPtr set_size(sg_size_t size);
+ IoPtr set_op_type(OpType type);
+
+ bool is_assigned() const override;
+};
+
+} // namespace s4u
+} // namespace simgrid
#endif /* SIMGRID_S4U_IO_HPP */