1 /* Copyright (c) 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 #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_
23 XBT_PUBLIC_DATA simgrid::kernel::resource::DiskModel* surf_disk_model;
37 class DiskModel : public kernel::resource::Model {
40 DiskModel(const DiskModel&) = delete;
41 DiskModel& operator=(const DiskModel&) = delete;
44 virtual DiskImpl* createDisk(const std::string& id, double read_bw, double write_bw) = 0;
50 class DiskImpl : public Resource, public xbt::PropertyHolder {
51 bool currently_destroying_ = false;
52 s4u::Host* host_ = nullptr;
58 DiskImpl(Model* model, const std::string& name, kernel::lmm::System* maxmin_system, double read_bw, double bwrite_bw);
59 DiskImpl(const DiskImpl&) = delete;
60 DiskImpl& operator=(const DiskImpl&) = delete;
64 /** @brief Public interface */
65 s4u::Disk* get_iface() { return &piface_; }
66 double get_read_bandwidth() { return read_bw_; }
67 double get_write_bandwidth() { return write_bw_; }
69 /** @brief Check if the Storage is used (if an action currently uses its resources) */
70 bool is_used() override;
72 void apply_event(profile::Event* event, double value) override;
74 void turn_on() override;
75 void turn_off() override;
77 s4u::Host* get_host() { return host_; }
78 void set_host(s4u::Host* host) { host_ = host; }
80 void destroy(); // Must be called instead of the destructor
81 virtual DiskAction* io_start(sg_size_t size, s4u::Io::OpType type) = 0;
82 virtual DiskAction* read(sg_size_t size) = 0;
83 virtual DiskAction* write(sg_size_t size) = 0;
85 lmm::Constraint* constraint_write_; /* Constraint for maximum write bandwidth*/
86 lmm::Constraint* constraint_read_; /* Constraint for maximum write bandwidth*/
93 class DiskAction : public Action {
95 static xbt::signal<void(DiskAction const&, Action::State, Action::State)> on_state_change;
97 DiskAction(Model* model, double cost, bool failed, DiskImpl* disk, s4u::Io::OpType type)
98 : Action(model, cost, failed), type_(type), disk_(disk){};
101 * @brief diskAction constructor
103 * @param model The StorageModel associated to this DiskAction
104 * @param cost The cost of this DiskAction in bytes
105 * @param failed [description]
106 * @param var The lmm variable associated to this DiskAction if it is part of a LMM component
107 * @param storage The Storage associated to this DiskAction
108 * @param type [description]
110 DiskAction(kernel::resource::Model* model, double cost, bool failed, kernel::lmm::Variable* var, DiskImpl* disk,
111 s4u::Io::OpType type)
112 : Action(model, cost, failed, var), type_(type), disk_(disk){};
114 void set_state(simgrid::kernel::resource::Action::State state) override;
116 s4u::Io::OpType type_;
120 } // namespace resource
121 } // namespace kernel
122 } // namespace simgrid
123 #endif /* DISK_INTERFACE_HPP_ */