-/* Copyright (c) 2017-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2017-2023. 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. */
*/
class XBT_PUBLIC Io : public Activity_T<Io> {
-public:
- enum class OpType { READ, WRITE };
+#ifndef DOXYGEN
+ friend kernel::activity::IoImpl;
+ friend kernel::EngineImpl;
+#endif
-private:
- Storage* storage_ = nullptr;
- Disk* disk_ = nullptr;
- sg_size_t size_ = 0;
- OpType type_ = OpType::READ;
+ static xbt::signal<void(Io const&)> on_start;
- explicit Io(sg_storage_t storage, sg_size_t size, OpType type);
- explicit Io(sg_disk_t disk, sg_size_t size, OpType type);
+protected:
+ explicit Io(kernel::activity::IoImplPtr pimpl);
+ Io* do_start() override;
public:
-#ifndef DOXYGEN
- friend Disk; // Factory of IOs
- friend Storage; // Factory of IOs
-
- ~Io() override = default;
-#endif
+ enum class OpType { READ, WRITE };
- static xbt::signal<void(Io const&)> on_start;
- static xbt::signal<void(Io const&)> on_completion;
+ static void on_start_cb(const std::function<void(Io const&)>& cb) { on_start.connect(cb); }
- Io* start() override;
- Io* wait() override;
- Io* wait_for(double timeout) override;
- Io* cancel() override;
+ static IoPtr init();
+ /*! 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 ssize_t wait_any(const 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 ssize_t wait_any_for(const std::vector<IoPtr>& ios, double timeout);
double get_remaining() const override;
sg_size_t get_performed_ioops() const;
+ IoPtr set_disk(const_sg_disk_t disk);
+ IoPtr set_priority(double priority);
+ IoPtr set_size(sg_size_t size);
+ IoPtr set_op_type(OpType type);
+
+ static IoPtr streamto_init(Host* from, const Disk* from_disk, Host* to, const Disk* to_disk);
+ static IoPtr streamto_async(Host* from, const Disk* from_disk, Host* to, const Disk* to_disk,
+ uint64_t simulated_size_in_bytes);
+ static void streamto(Host* from, const Disk* from_disk, Host* to, const Disk* to_disk,
+ uint64_t simulated_size_in_bytes);
+
+ IoPtr set_source(Host* from, const Disk* from_disk);
+ IoPtr set_destination(Host* to, const Disk* to_disk);
+
+ IoPtr update_priority(double priority);
+
+ bool is_assigned() const override;
};
} // namespace s4u