1 /* Copyright (c) 2019-2021. 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 #include "simgrid/kernel/resource/Action.hpp"
7 #include "simgrid/kernel/resource/Model.hpp"
8 #include "simgrid/kernel/resource/Resource.hpp"
9 #include "simgrid/s4u/Disk.hpp"
10 #include "simgrid/s4u/Io.hpp"
11 #include "src/surf/surf_interface.hpp"
12 #include <xbt/PropertyHolder.hpp>
16 #ifndef DISK_INTERFACE_HPP_
17 #define DISK_INTERFACE_HPP_
35 class DiskModel : public Model {
37 explicit DiskModel(const std::string& name);
38 DiskModel(const DiskModel&) = delete;
39 DiskModel& operator=(const DiskModel&) = delete;
41 virtual DiskImpl* create_disk(const std::string& name, double read_bandwidth, double write_bandwidth) = 0;
43 virtual DiskAction* io_start(const DiskImpl* disk, sg_size_t size, s4u::Io::OpType type) = 0;
49 class DiskImpl : public Resource_T<DiskImpl>, public xbt::PropertyHolder {
51 s4u::Host* host_ = nullptr;
52 lmm::Constraint* constraint_write_ = nullptr; /* Constraint for maximum write bandwidth*/
53 lmm::Constraint* constraint_read_ = nullptr; /* Constraint for maximum read bandwidth*/
56 ~DiskImpl() override = default; // Disallow direct deletion. Call destroy() instead.
59 Metric read_bw_ = {0.0, 0, nullptr};
60 Metric write_bw_ = {0.0, 0, nullptr};
62 explicit DiskImpl(const std::string& name, double read_bandwidth, double write_bandwidth);
63 DiskImpl(const DiskImpl&) = delete;
64 DiskImpl& operator=(const DiskImpl&) = delete;
66 /** @brief Public interface */
67 const s4u::Disk* get_iface() const { return &piface_; }
68 s4u::Disk* get_iface() { return &piface_; }
69 DiskImpl* set_host(s4u::Host* host);
70 s4u::Host* get_host() const { return host_; }
72 virtual void set_read_bandwidth(double read_bw) = 0;
73 double get_read_bandwidth() const { return read_bw_.peak * read_bw_.scale; }
75 virtual void set_write_bandwidth(double write_bw) = 0;
76 double get_write_bandwidth() const { return write_bw_.peak * write_bw_.scale; }
78 DiskImpl* set_read_constraint(lmm::Constraint* constraint_read);
79 lmm::Constraint* get_read_constraint() const { return constraint_read_; }
81 DiskImpl* set_write_constraint(lmm::Constraint* constraint_write);
82 lmm::Constraint* get_write_constraint() const { return constraint_write_; }
84 DiskImpl* set_read_bandwidth_profile(profile::Profile* profile);
85 DiskImpl* set_write_bandwidth_profile(profile::Profile* profile);
87 /** @brief Check if the Disk is used (if an action currently uses its resources) */
88 bool is_used() const override;
89 void turn_on() override;
90 void turn_off() override;
93 void destroy(); // Must be called instead of the destructor
100 class DiskAction : public Action {
102 static xbt::signal<void(DiskAction const&, Action::State, Action::State)> on_state_change;
104 using Action::Action;
105 void set_state(simgrid::kernel::resource::Action::State state) override;
107 double sharing_penalty_ = {};
110 } // namespace resource
111 } // namespace kernel
112 } // namespace simgrid
113 #endif /* DISK_INTERFACE_HPP_ */