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 Disk::io_init(), Disk::read() Disk::read_async(), Disk::write() and Disk::write_async().
23 class XBT_PUBLIC Io : public Activity {
25 enum class OpType { READ, WRITE };
28 Storage* storage_ = nullptr;
29 Disk* disk_ = nullptr;
31 OpType type_ = OpType::READ;
32 std::string name_ = "";
33 std::atomic_int_fast32_t refcount_{0};
35 explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
36 explicit Io(sg_disk_t disk, sg_size_t size, OpType type);
40 friend XBT_PUBLIC void intrusive_ptr_release(simgrid::s4u::Io* i);
41 friend XBT_PUBLIC void intrusive_ptr_add_ref(simgrid::s4u::Io* i);
42 friend Disk; // Factory of IOs
43 friend Storage; // Factory of IOs
50 Io* wait_for(double timeout) override;
51 Io* cancel() override;
54 double get_remaining() override;
55 sg_size_t get_performed_ioops();
59 } // namespace simgrid
61 #endif /* SIMGRID_S4U_IO_HPP */