1 /* Copyright (c) 2017-2020. 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>
17 /** I/O Activity, representing the asynchronous disk access.
19 * They are generated from Disk::io_init(), Disk::read() Disk::read_async(), Disk::write() and Disk::write_async().
22 class XBT_PUBLIC Io : public Activity_T<Io> {
24 enum class OpType { READ, WRITE };
27 Storage* storage_ = nullptr;
28 Disk* disk_ = nullptr;
30 OpType type_ = OpType::READ;
32 explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
33 explicit Io(sg_disk_t disk, sg_size_t size, OpType type);
37 friend Disk; // Factory of IOs
38 friend Storage; // Factory of IOs
41 ~Io() override = default;
45 Io* wait_for(double timeout) override;
46 Io* cancel() override;
48 double get_remaining() const override;
49 sg_size_t get_performed_ioops() const;
53 } // namespace simgrid
55 #endif /* SIMGRID_S4U_IO_HPP */