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_T<Io> {
25 enum class OpType { READ, WRITE };
28 Storage* storage_ = nullptr;
30 OpType type_ = OpType::READ;
31 std::atomic_int_fast32_t refcount_{0};
33 explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
36 friend XBT_PUBLIC void intrusive_ptr_release(simgrid::s4u::Io* i);
37 friend XBT_PUBLIC void intrusive_ptr_add_ref(simgrid::s4u::Io* i);
38 friend Storage; // Factory of IOs
44 Io* wait_for(double timeout) override;
45 Io* cancel() override;
48 double get_remaining() override;
49 sg_size_t get_performed_ioops();
52 XBT_ATTRIB_DEPRECATED_v324("Please use Io::wait_for()") void wait(double t) override { wait_for(t); }
57 } // namespace simgrid
59 #endif /* SIMGRID_S4U_IO_HPP */