1 /* Copyright (c) 2004-2020. 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/Io.hpp"
10 #include "simgrid/s4u/Storage.hpp"
11 #include "surf_interface.hpp"
12 #include "xbt/PropertyHolder.hpp"
16 #ifndef STORAGE_INTERFACE_HPP_
17 #define STORAGE_INTERFACE_HPP_
23 XBT_PUBLIC_DATA simgrid::kernel::resource::StorageModel* surf_storage_model;
33 /** @ingroup SURF_storage_interface
34 * @brief The possible type of action for the storage component
40 /** @ingroup SURF_storage_interface
41 * @brief SURF storage model interface class
42 * @details A model is an object which handle the interactions between its Resources and its Actions
44 class StorageModel : public kernel::resource::Model {
47 StorageModel(const StorageModel&) = delete;
48 StorageModel& operator=(const StorageModel&) = delete;
51 virtual StorageImpl* createStorage(const std::string& id, const std::string& type_id, const std::string& content_name,
52 const std::string& attach) = 0;
58 /** @ingroup SURF_storage_interface
59 * @brief SURF storage interface class
60 * @details A Storage represent a storage unit (e.g.: hard drive, usb key)
62 class StorageImpl : public Resource, public xbt::PropertyHolder {
64 lmm::Constraint* constraint_read_; /* Constraint for maximum write bandwidth*/
65 lmm::Constraint* constraint_write_; /* Constraint for maximum write bandwidth*/
68 bool currently_destroying_ = false;
69 // Name of the host to which this storage is attached. Only used at platform parsing time, then the interface stores
74 const std::string content_name_; // Only used at parsing time then goes to the FileSystemExtension
75 const sg_size_t size_; // Only used at parsing time then goes to the FileSystemExtension
76 /** @brief Storage constructor */
77 StorageImpl(Model* model, const std::string& name, kernel::lmm::System* maxmin_system, double bread, double bwrite,
78 const std::string& type_id, const std::string& content_name, sg_size_t size, const std::string& attach);
79 StorageImpl(const StorageImpl&) = delete;
80 StorageImpl& operator=(const StorageImpl&) = delete;
82 ~StorageImpl() override;
84 s4u::Storage* get_iface() { return &piface_; }
85 const char* get_type() { return typeId_.c_str(); }
86 lmm::Constraint* get_read_constraint() const { return constraint_read_; }
87 lmm::Constraint* get_write_constraint() const { return constraint_write_; }
88 /** @brief Check if the Storage is used (if an action currently uses its resources) */
89 bool is_used() override;
91 void apply_event(profile::Event* event, double value) override;
93 void turn_on() override;
94 void turn_off() override;
96 void destroy(); // Must be called instead of the destructor
97 virtual StorageAction* io_start(sg_size_t size, s4u::Io::OpType type) = 0;
101 * @param size The size in bytes to read
102 * @return The StorageAction corresponding to the reading
104 virtual StorageAction* read(sg_size_t size) = 0;
107 * @brief Write a file
109 * @param size The size in bytes to write
110 * @return The StorageAction corresponding to the writing
112 virtual StorageAction* write(sg_size_t size) = 0;
113 const std::string& get_host() const { return attach_; }
120 /** @ingroup SURF_storage_interface
121 * @brief SURF storage action interface class
123 class StorageAction : public Action {
126 * @brief Callbacks handler which emit the callbacks after StorageAction State changed *
127 * @details Callback functions have the following signature: `void(StorageAction& action,
128 * simgrid::kernel::resource::Action::State old, simgrid::kernel::resource::Action::State current)`
130 static xbt::signal<void(StorageAction const&, Action::State, Action::State)> on_state_change;
133 * @brief StorageAction constructor
135 * @param model The StorageModel associated to this StorageAction
136 * @param cost The cost of this StorageAction in bytes
137 * @param failed [description]
138 * @param storage The Storage associated to this StorageAction
139 * @param type [description]
141 StorageAction(Model* model, double cost, bool failed, StorageImpl* storage, s4u::Io::OpType type)
142 : Action(model, cost, failed), type_(type), storage_(storage){};
145 * @brief StorageAction constructor
147 * @param model The StorageModel associated to this StorageAction
148 * @param cost The cost of this StorageAction in [TODO]
149 * @param failed [description]
150 * @param var The lmm variable associated to this StorageAction if it is part of a LMM component
151 * @param storage The Storage associated to this StorageAction
152 * @param type [description]
154 StorageAction(kernel::resource::Model* model, double cost, bool failed, kernel::lmm::Variable* var,
155 StorageImpl* storage, s4u::Io::OpType type)
156 : Action(model, cost, failed, var), type_(type), storage_(storage){};
158 void set_state(simgrid::kernel::resource::Action::State state) override;
160 s4u::Io::OpType type_;
161 StorageImpl* storage_;
169 std::unordered_map<std::string, std::string>* properties;
170 std::unordered_map<std::string, std::string>* model_properties;
172 StorageType(const std::string& id, const std::string& model, const std::string& content,
173 std::unordered_map<std::string, std::string>* properties,
174 std::unordered_map<std::string, std::string>* model_properties, sg_size_t size)
175 : id(id), model(model), content(content), properties(properties), model_properties(model_properties), size(size)
180 } // namespace resource
181 } // namespace kernel
182 } // namespace simgrid
183 #endif /* STORAGE_INTERFACE_HPP_ */