-/* Copyright (c) 2017-2019. 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 {
/** I/O Activity, representing the asynchronous disk access.
*
- * They are generated from Storage::io_init() or Storage::read() and Storage::write().
+ * They are generated from Disk::io_init(), Disk::read() Disk::read_async(), Disk::write() and Disk::write_async().
*/
-class XBT_PUBLIC Io : public Activity {
-public:
- enum class OpType { READ, WRITE };
+class XBT_PUBLIC Io : public Activity_T<Io> {
+ friend kernel::activity::IoImpl;
-private:
- Storage* storage_ = nullptr;
- sg_size_t size_ = 0;
- OpType type_ = OpType::READ;
- std::string name_ = "";
- std::atomic_int_fast32_t refcount_{0};
+protected:
+ explicit Io(kernel::activity::IoImplPtr pimpl);
- explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
+ void complete(Activity::State state) override;
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 simgrid::s4u::Storage; // Factory of IOs
+ enum class OpType { READ, WRITE };
- ~Io() = default;
+ 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;
- bool test() override;
+ /*! take a vector of s4u::IoPtr and return when one of them is finished.
+ * The return value is the rank of the first finished IoPtr. */
+ static int wait_any(std::vector<IoPtr>* ios) { return wait_any_for(ios, -1); }
+ /*! Same as wait_any, but with a timeout. If the timeout occurs, parameter last is returned.*/
+ static int wait_any_for(std::vector<IoPtr>* ios, double timeout);
- double get_remaining() override;
- sg_size_t get_performed_ioops();
+ 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);
-#ifndef DOXYGEN
- XBT_ATTRIB_DEPRECATED_v324("Please use Io::wait_for()") void wait(double t) override { wait_for(t); }
-#endif
+ bool is_assigned() const override;
+};
-private:
-}; // class
} // namespace s4u
} // namespace simgrid