1 /* Copyright (c) 2017-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SIMGRID_S4U_IO_HPP
7 #define SIMGRID_S4U_IO_HPP
9 #include <simgrid/forward.h>
10 #include <simgrid/s4u/Activity.hpp>
18 /** I/O Activity, representing the asynchronous disk access.
20 * They are generated from Storage::io_init() or Storage::read() and Storage::write().
23 class XBT_PUBLIC Io : public Activity {
25 enum class OpType { READ, WRITE };
28 Storage* storage_ = nullptr;
30 OpType type_ = OpType::READ;
31 std::string name_ = "";
32 std::atomic_int_fast32_t refcount_{0};
34 explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
38 friend XBT_PUBLIC void intrusive_ptr_release(simgrid::s4u::Io* i);
39 friend XBT_PUBLIC void intrusive_ptr_add_ref(simgrid::s4u::Io* i);
40 friend Storage; // Factory of IOs
47 Io* wait_for(double timeout) override;
48 Io* cancel() override;
51 double get_remaining() override;
52 sg_size_t get_performed_ioops();
56 } // namespace simgrid
58 #endif /* SIMGRID_S4U_IO_HPP */