1 /* Copyright (c) 2004-2019. 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/Io.hpp"
10 #include "simgrid/s4u/Storage.hpp"
11 #include "src/kernel/resource/profile/trace_mgr.hpp"
12 #include "src/surf/PropertyHolder.hpp"
13 #include "surf_interface.hpp"
17 #ifndef STORAGE_INTERFACE_HPP_
18 #define STORAGE_INTERFACE_HPP_
28 /** @ingroup SURF_storage_interface
29 * @brief The possible type of action for the storage component
35 /** @ingroup SURF_callbacks
36 * @brief Callbacks handler which emit the callbacks after StorageAction State changed *
37 * @details Callback functions have the following signature: `void(StorageAction *action,
38 * simgrid::kernel::resource::Action::State old, simgrid::kernel::resource::Action::State current)`
41 simgrid::xbt::signal<void(StorageAction*, kernel::resource::Action::State, kernel::resource::Action::State)>
47 /** @ingroup SURF_storage_interface
48 * @brief SURF storage model interface class
49 * @details A model is an object which handle the interactions between its Resources and its Actions
51 class StorageModel : public kernel::resource::Model {
54 StorageModel(const StorageModel&) = delete;
55 StorageModel& operator=(const StorageModel&) = delete;
58 virtual StorageImpl* createStorage(const std::string& id, const std::string& type_id, const std::string& content_name,
59 const std::string& attach) = 0;
65 /** @ingroup SURF_storage_interface
66 * @brief SURF storage interface class
67 * @details A Storage represent a storage unit (e.g.: hard drive, usb key)
69 class StorageImpl : public kernel::resource::Resource, public PropertyHolder {
71 /** @brief Storage constructor */
72 StorageImpl(kernel::resource::Model* model, const std::string& name, kernel::lmm::System* maxmin_system, double bread,
73 double bwrite, const std::string& type_id, const std::string& content_name, sg_size_t size,
74 const std::string& attach);
75 StorageImpl(const StorageImpl&) = delete;
76 StorageImpl& operator=(const StorageImpl&) = delete;
78 ~StorageImpl() override;
80 /** @brief Public interface */
83 /** @brief Check if the Storage is used (if an action currently uses its resources) */
84 bool is_used() override;
86 void apply_event(simgrid::kernel::profile::Event* event, double value) override;
88 void turn_on() override;
89 void turn_off() override;
91 void destroy(); // Must be called instead of the destructor
92 virtual simgrid::kernel::resource::Action* io_start(sg_size_t size, s4u::Io::OpType type) = 0;
96 * @param size The size in bytes to read
97 * @return The StorageAction corresponding to the reading
99 virtual StorageAction* read(sg_size_t size) = 0;
102 * @brief Write a file
104 * @param size The size in bytes to write
105 * @return The StorageAction corresponding to the writing
107 virtual StorageAction* write(sg_size_t size) = 0;
108 virtual std::string getHost() { return attach_; }
110 kernel::lmm::Constraint* constraintWrite_; /* Constraint for maximum write bandwidth*/
111 kernel::lmm::Constraint* constraintRead_; /* Constraint for maximum write bandwidth*/
114 std::string content_name; // Only used at parsing time then goes to the FileSystemExtension
115 sg_size_t size_; // Only used at parsing time then goes to the FileSystemExtension
118 bool currentlyDestroying_ = false;
119 // Name of the host to which this storage is attached. Only used at platform parsing time, then the interface stores
120 // the Host directly.
128 /** @ingroup SURF_storage_interface
129 * @brief SURF storage action interface class
131 class StorageAction : public kernel::resource::Action {
133 static xbt::signal<void(StorageAction*, kernel::resource::Action::State, kernel::resource::Action::State)>
137 * @brief StorageAction constructor
139 * @param model The StorageModel associated to this StorageAction
140 * @param cost The cost of this StorageAction in bytes
141 * @param failed [description]
142 * @param storage The Storage associated to this StorageAction
143 * @param type [description]
145 StorageAction(kernel::resource::Model* model, double cost, bool failed, StorageImpl* storage, s4u::Io::OpType type)
146 : Action(model, cost, failed), type_(type), storage_(storage){};
149 * @brief StorageAction constructor
151 * @param model The StorageModel associated to this StorageAction
152 * @param cost The cost of this StorageAction in [TODO]
153 * @param failed [description]
154 * @param var The lmm variable associated to this StorageAction if it is part of a LMM component
155 * @param storage The Storage associated to this StorageAction
156 * @param type [description]
158 StorageAction(kernel::resource::Model* model, double cost, bool failed, kernel::lmm::Variable* var,
159 StorageImpl* storage, s4u::Io::OpType type)
160 : Action(model, cost, failed, var), type_(type), storage_(storage){};
162 void set_state(simgrid::kernel::resource::Action::State state) override;
164 s4u::Io::OpType type_;
165 StorageImpl* storage_;
173 std::unordered_map<std::string, std::string>* properties;
174 std::unordered_map<std::string, std::string>* model_properties;
176 StorageType(const std::string& id, const std::string& model, const std::string& content,
177 std::unordered_map<std::string, std::string>* properties,
178 std::unordered_map<std::string, std::string>* model_properties, sg_size_t size)
179 : id(id), model(model), content(content), properties(properties), model_properties(model_properties), size(size)
186 #endif /* STORAGE_INTERFACE_HPP_ */