1 /* Copyright (c) 2004-2021. 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 #ifndef SIMGRID_KERNEL_RESOURCE_RESOURCE_HPP
7 #define SIMGRID_KERNEL_RESOURCE_RESOURCE_HPP
9 #include "src/kernel/lmm/maxmin.hpp" // Constraint
10 #include <simgrid/forward.h>
11 #include <xbt/signal.hpp>
13 #include <xbt/utility.hpp>
21 /** @ingroup SURF_interface
22 * @brief SURF resource interface class
23 * @details This is the ancestor class of every resources in SimGrid, such as links, CPU or disk
25 class XBT_PUBLIC Resource {
26 std::string name_ = "unnamed";
32 double peak; /**< The peak of the metric, ie its max value */
33 double scale; /**< Current availability of the metric according to the profiles, in [0,1] */
34 profile::Event* event; /**< The associated profile event associated to the metric */
36 profile::Event* state_event_ = nullptr;
39 Resource(const std::string& name) : name_(name){};
40 virtual ~Resource() = default;
41 virtual void seal() { sealed_ = true; }
43 /** @brief Get the name of the current Resource */
44 const std::string& get_name() const { return name_; }
45 /** @brief Get the name of the current Resource */
46 const char* get_cname() const { return name_.c_str(); }
48 bool operator==(const Resource& other) const { return name_ == other.name_; }
50 /** @brief Apply an event of external load event to that resource */
51 virtual void apply_event(profile::Event* event, double value) = 0;
53 /** @brief Check if the current Resource is used (if it currently serves an action) */
54 virtual bool is_used() const = 0;
56 /** @brief Check if the current Resource is active */
57 virtual bool is_on() const { return is_on_; }
58 virtual bool is_sealed() const { return sealed_; }
60 /** @brief Turn on the current Resource */
61 virtual void turn_on() { is_on_ = true; }
62 /** @brief Turn off the current Resource */
63 virtual void turn_off() { is_on_ = false; }
64 /** @brief setup the profile file with states events (ON or OFF). The profile must contain boolean values. */
65 virtual void set_state_profile(profile::Profile* profile);
68 template <class AnyResource> class Resource_T : public Resource {
69 Model* model_ = nullptr;
70 lmm::Constraint* constraint_ = nullptr;
73 using Resource::Resource;
74 AnyResource* set_model(Model* model)
77 return static_cast<AnyResource*>(this);
80 Model* get_model() const { return model_; }
82 AnyResource* set_constraint(lmm::Constraint* constraint)
84 constraint_ = constraint;
85 return static_cast<AnyResource*>(this);
88 lmm::Constraint* get_constraint() const { return constraint_; }
90 /** @brief returns the current load due to activities (in flops per second, byte per second or similar)
92 * The load due to external usages modeled by profile files is ignored.*/
93 virtual double get_load() const { return constraint_->get_usage(); }
96 } // namespace resource
98 } // namespace simgrid
101 template <> class hash<simgrid::kernel::resource::Resource> {
103 std::size_t operator()(const simgrid::kernel::resource::Resource& r) const
105 return (std::size_t)xbt_str_hash(r.get_cname());