1 /* Copyright (c) 2004-2018. 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 #ifndef SIMGRID_KERNEL_RESOURCE_RESOURCE_HPP
7 #define SIMGRID_KERNEL_RESOURCE_RESOURCE_HPP
9 #include <simgrid/forward.h>
10 #include <xbt/signal.hpp>
12 #include <xbt/utility.hpp>
18 /** @ingroup SURF_interface
19 * @brief SURF resource interface class
20 * @details This is the ancestor class of every resources in SimGrid, such as links, CPU or storage
22 class XBT_PUBLIC Resource {
25 * @brief Constructor of LMM Resources
27 * @param model Model associated to this Resource
28 * @param name The name of the Resource
29 * @param constraint The lmm constraint associated to this Resource if it is part of a LMM component
31 Resource(Model* model, const std::string& name, lmm::Constraint* constraint);
35 /** @brief Get the Model of the current Resource */
38 /** @brief Get the name of the current Resource */
39 const std::string& getName() const;
40 /** @brief Get the name of the current Resource */
41 const char* getCname() const;
43 bool operator==(const Resource& other) const;
46 * @brief Apply an event of external load event to that resource
48 * @param event What happened
51 virtual void apply_event(TraceEvent* event, double value) = 0;
53 /** @brief Check if the current Resource is used (if it currently serves an action) */
54 virtual bool isUsed() = 0;
56 /** @brief returns the current load (in flops per second, byte per second or similar) */
57 virtual double getLoad();
59 /** @brief Check if the current Resource is active */
60 virtual bool isOn() const;
61 /** @brief Check if the current Resource is shut down */
62 virtual bool isOff() const;
63 /** @brief Turn on the current Resource */
64 virtual void turnOn();
65 /** @brief Turn off the current Resource */
66 virtual void turnOff();
74 /** @brief Get the lmm constraint associated to this Resource if it is part of a LMM component (or null if none) */
75 kernel::lmm::Constraint* constraint() const;
78 kernel::lmm::Constraint* const constraint_ = nullptr;
82 double peak; /**< The peak of the metric, ie its max value */
83 double scale; /**< Current availability of the metric according to the traces, in [0,1] */
84 TraceEvent* event; /**< The associated trace event associated to the metric */
87 } // namespace resource
89 } // namespace simgrid
92 template <> class hash<simgrid::kernel::resource::Resource> {
94 std::size_t operator()(const simgrid::kernel::resource::Resource& r) const
96 return (std::size_t)xbt_str_hash(r.getCname());