1 /* Copyright (c) 2004-2017. 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. */
9 #include "xbt/signal.hpp"
11 #include "src/surf/surf_private.hpp"
12 #include "surf/surf.hpp"
15 #include <boost/heap/pairing_heap.hpp>
16 #include <boost/intrusive/list.hpp>
17 #include <boost/optional.hpp>
20 #include <unordered_map>
22 #define NO_MAX_DURATION -1.0
28 /* user-visible parameters */
29 extern XBT_PRIVATE double sg_tcp_gamma;
30 extern XBT_PRIVATE double sg_latency_factor;
31 extern XBT_PRIVATE double sg_bandwidth_factor;
32 extern XBT_PRIVATE double sg_weight_S_parameter;
33 extern XBT_PRIVATE int sg_network_crosstraffic;
34 extern XBT_PRIVATE std::vector<std::string> surf_path;
35 extern XBT_PRIVATE std::unordered_map<std::string, tmgr_trace_t> traces_set_list;
36 extern XBT_PRIVATE std::set<std::string> watched_hosts;
39 XBT_PUBLIC(double) surf_get_clock();
41 /** \ingroup SURF_simulation
42 * \brief List of hosts that have just restarted and whose autorestart process should be restarted.
44 XBT_PUBLIC_DATA(std::vector<sg_host_t>) host_that_restart;
49 extern XBT_PRIVATE simgrid::xbt::signal<void()> surfExitCallbacks;
53 int XBT_PRIVATE __surf_is_absolute_file_path(const char *file_path);
59 enum heap_action_type{
70 /** \ingroup SURF_models
71 * \brief List of initialized models
73 XBT_PUBLIC_DATA(std::vector<surf_model_t>*) all_existing_models;
78 typedef std::pair<double, simgrid::surf::Action*> heap_element_type;
79 struct heap_element_compare {
80 bool operator()(const heap_element_type& a, const heap_element_type& b) const { return a.first > b.first; }
82 typedef boost::heap::pairing_heap<heap_element_type, boost::heap::constant_time_size<false>, boost::heap::stable<true>,
83 boost::heap::compare<heap_element_compare>>
86 /** @ingroup SURF_interface
87 * @brief SURF action interface class
88 * @details An action is an event generated by a resource (e.g.: a communication for the network)
90 XBT_PUBLIC_CLASS Action {
92 boost::intrusive::list_member_hook<> action_hook;
93 boost::intrusive::list_member_hook<> action_lmm_hook;
94 typedef boost::intrusive::member_hook<
95 Action, boost::intrusive::list_member_hook<>, &Action::action_hook> ActionOptions;
96 typedef boost::intrusive::list<Action, ActionOptions> ActionList;
99 ready = 0, /**< Ready */
100 running, /**< Running */
101 failed, /**< Task Failure */
102 done, /**< Completed */
103 to_free, /**< Action to free in next cleanup */
104 not_in_the_system /**< Not in the system anymore. Why did you ask ? */
108 * @brief Action constructor
110 * @param model The Model associated to this Action
111 * @param cost The cost of the Action
112 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
114 Action(simgrid::surf::Model *model, double cost, bool failed);
117 * @brief Action constructor
119 * @param model The Model associated to this Action
120 * @param cost The cost of the Action
121 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
122 * @param var The lmm variable associated to this Action if it is part of a LMM component
124 Action(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var);
126 /** @brief Destructor */
130 * @brief Mark that the action is now finished
132 * @param state the new [state](\ref simgrid::surf::Action::State) of the current Action
134 void finish(Action::State state);
136 /** @brief Get the [state](\ref simgrid::surf::Action::State) of the current Action */
137 Action::State getState(); /**< get the state*/
138 /** @brief Set the [state](\ref simgrid::surf::Action::State) of the current Action */
139 virtual void setState(Action::State state);
141 /** @brief Get the bound of the current Action */
143 /** @brief Set the bound of the current Action */
144 void setBound(double bound);
146 /** @brief Get the start time of the current action */
147 double getStartTime();
148 /** @brief Get the finish time of the current action */
149 double getFinishTime();
151 /** @brief Get the user data associated to the current action */
152 void *getData() {return data_;}
153 /** @brief Set the user data associated to the current action */
154 void setData(void* data);
156 /** @brief Get the cost of the current action */
157 double getCost() {return cost_;}
158 /** @brief Set the cost of the current action */
159 void setCost(double cost) {cost_ = cost;}
161 /** @brief Update the maximum duration of the current action
162 * @param delta Amount to remove from the MaxDuration */
163 void updateMaxDuration(double delta) {double_update(&maxDuration_, delta,sg_surf_precision);}
165 /** @brief Update the remaining time of the current action
166 * @param delta Amount to remove from the remaining time */
167 void updateRemains(double delta) {double_update(&remains_, delta, sg_maxmin_precision*sg_surf_precision);}
169 /** @brief Set the remaining time of the current action */
170 void setRemains(double value) {remains_ = value;}
171 /** @brief Get the remaining time of the current action after updating the resource */
172 virtual double getRemains();
173 /** @brief Get the remaining time of the current action without updating the resource */
174 double getRemainsNoUpdate();
176 /** @brief Set the finish time of the current action */
177 void setFinishTime(double value) {finishTime_ = value;}
179 /**@brief Add a reference to the current action (refcounting) */
181 /** @brief Unref that action (and destroy it if refcount reaches 0)
182 * @return true if the action was destroyed and false if someone still has references on it
186 /** @brief Cancel the current Action if running */
187 virtual void cancel();
189 /** @brief Suspend the current Action */
190 virtual void suspend();
192 /** @brief Resume the current Action */
193 virtual void resume();
195 /** @brief Returns true if the current action is running */
196 virtual bool isSuspended();
198 /** @brief Get the maximum duration of the current action */
199 double getMaxDuration() {return maxDuration_;}
200 /** @brief Set the maximum duration of the current Action */
201 virtual void setMaxDuration(double duration);
203 /** @brief Get the tracing category associated to the current action */
204 char *getCategory() {return category_;}
205 /** @brief Set the tracing category of the current Action */
206 void setCategory(const char *category);
208 /** @brief Get the priority of the current Action */
209 double getPriority() { return sharingWeight_; };
210 /** @brief Set the priority of the current Action */
211 virtual void setSharingWeight(double priority);
212 void setSharingWeightNoUpdate(double weight) { sharingWeight_ = weight; }
214 /** @brief Get the state set in which the action is */
215 ActionList* getStateSet() {return stateSet_;};
217 s_xbt_swag_hookup_t stateHookup_ = {nullptr,nullptr};
219 simgrid::surf::Model* getModel() { return model_; }
222 ActionList* stateSet_;
226 double sharingWeight_ = 1.0; /**< priority (1.0 by default) */
227 double maxDuration_ = NO_MAX_DURATION; /*< max_duration (may fluctuate until the task is completed) */
228 double remains_; /**< How much of that cost remains to be done in the currently running task */
229 double start_; /**< start time */
230 char *category_ = nullptr; /**< tracing category for categorized resource utilization monitoring */
232 -1; /**< finish time : this is modified during the run and fluctuates until the task is completed */
235 simgrid::surf::Model *model_;
236 void *data_ = nullptr; /**< for your convenience */
239 double lastUpdate_ = 0;
240 double lastValue_ = 0;
241 lmm_variable_t variable_ = nullptr;
242 enum heap_action_type hat_ = NOTSET;
243 boost::optional<heap_type::handle_type> heapHandle_ = boost::none;
246 virtual void updateRemainingLazy(double now) { THROW_IMPOSSIBLE; };
247 void heapInsert(heap_type& heap, double key, enum heap_action_type hat);
248 void heapRemove(heap_type& heap);
249 void heapUpdate(heap_type& heap, double key, enum heap_action_type hat);
250 void clearHeapHandle() { heapHandle_ = boost::none; }
251 lmm_variable_t getVariable() {return variable_;}
252 void setVariable(lmm_variable_t var) { variable_ = var; }
253 double getLastUpdate() {return lastUpdate_;}
254 void refreshLastUpdate() {lastUpdate_ = surf_get_clock();}
255 double getLastValue() { return lastValue_; }
256 void setLastValue(double val) { lastValue_ = val; }
257 enum heap_action_type getHat() { return hat_; }
258 bool is_linked() {return action_lmm_hook.is_linked();}
263 typedef Action::ActionList ActionList;
265 typedef boost::intrusive::member_hook<
266 Action, boost::intrusive::list_member_hook<>, &Action::action_lmm_hook> ActionLmmOptions;
267 typedef boost::intrusive::list<Action, ActionLmmOptions> ActionLmmList;
268 typedef ActionLmmList* ActionLmmListPtr;
274 /** @ingroup SURF_interface
275 * @brief SURF model interface class
276 * @details A model is an object which handle the interactions between its Resources and its Actions
278 XBT_PUBLIC_CLASS Model {
283 /** @brief Get the set of [actions](@ref Action) in *ready* state */
284 virtual ActionList* getReadyActionSet() {return readyActionSet_;}
286 /** @brief Get the set of [actions](@ref Action) in *running* state */
287 virtual ActionList* getRunningActionSet() {return runningActionSet_;}
289 /** @brief Get the set of [actions](@ref Action) in *failed* state */
290 virtual ActionList* getFailedActionSet() {return failedActionSet_;}
292 /** @brief Get the set of [actions](@ref Action) in *done* state */
293 virtual ActionList* getDoneActionSet() {return doneActionSet_;}
295 /** @brief Get the set of modified [actions](@ref Action) */
296 virtual ActionLmmListPtr getModifiedSet() {return modifiedSet_;}
298 /** @brief Get the maxmin system of the current Model */
299 lmm_system_t getMaxminSystem() {return maxminSystem_;}
302 * @brief Get the update mechanism of the current Model
305 e_UM_t getUpdateMechanism() {return updateMechanism_;}
306 void setUpdateMechanism(e_UM_t mechanism) { updateMechanism_ = mechanism; }
308 /** @brief Get Action heap */
309 heap_type& getActionHeap() { return actionHeap_; }
311 double actionHeapTopDate() const { return actionHeap_.top().first; }
312 Action* actionHeapPop();
313 bool actionHeapIsEmpty() const { return actionHeap_.empty(); }
316 * @brief Share the resources between the actions
318 * @param now The current time of the simulation
319 * @return The delta of time till the next action will finish
321 virtual double nextOccuringEvent(double now);
322 virtual double nextOccuringEventLazy(double now);
323 virtual double nextOccuringEventFull(double now);
326 * @brief Update action to the current time
328 * @param now The current time of the simulation
329 * @param delta The delta of time since the last update
331 virtual void updateActionsState(double now, double delta);
332 virtual void updateActionsStateLazy(double now, double delta);
333 virtual void updateActionsStateFull(double now, double delta);
335 /** @brief Returns whether this model have an idempotent shareResource()
337 * The only model that is not is NS3: computing the next timestamp moves the model up to that point,
338 * so we need to call it only when the next timestamp of other sources is computed.
340 virtual bool nextOccuringEventIsIdempotent() { return true;}
343 ActionLmmListPtr modifiedSet_;
344 lmm_system_t maxminSystem_ = nullptr;
345 bool selectiveUpdate_;
348 e_UM_t updateMechanism_ = UM_UNDEFINED;
349 ActionList* readyActionSet_; /**< Actions in state SURF_ACTION_READY */
350 ActionList* runningActionSet_; /**< Actions in state SURF_ACTION_RUNNING */
351 ActionList* failedActionSet_; /**< Actions in state SURF_ACTION_FAILED */
352 ActionList* doneActionSet_; /**< Actions in state SURF_ACTION_DONE */
353 heap_type actionHeap_;
363 /** @ingroup SURF_interface
364 * @brief Resource which have a metric handled by a maxmin system
366 struct s_surf_metric_t {
367 double peak; /**< The peak of the metric, ie its max value */
368 double scale; /**< Current availability of the metric according to the traces, in [0,1] */
369 tmgr_trace_event_t event; /**< The associated trace event associated to the metric */
375 /** @ingroup SURF_interface
376 * @brief SURF resource interface class
377 * @details This is the ancestor class of every resources in SimGrid, such as links, CPU or storage
379 XBT_PUBLIC_CLASS Resource {
382 * @brief Constructor of LMM Resources
384 * @param model Model associated to this Resource
385 * @param name The name of the Resource
386 * @param constraint The lmm constraint associated to this Resource if it is part of a LMM component
388 Resource(Model * model, const std::string& name, lmm_constraint_t constraint);
392 /** @brief Get the Model of the current Resource */
393 Model* model() const;
395 /** @brief Get the name of the current Resource */
396 const std::string& getName() const;
397 /** @brief Get the name of the current Resource */
398 const char* getCname() const;
400 bool operator==(const Resource &other) const;
403 * @brief Apply an event of external load event to that resource
405 * @param event What happened
406 * @param value [TODO]
408 virtual void apply_event(tmgr_trace_event_t event, double value) = 0;
410 /** @brief Check if the current Resource is used (if it currently serves an action) */
411 virtual bool isUsed()=0;
413 /** @brief Check if the current Resource is active */
414 virtual bool isOn() const;
415 /** @brief Check if the current Resource is shut down */
416 virtual bool isOff() const;
417 /** @brief Turn on the current Resource */
418 virtual void turnOn();
419 /** @brief Turn off the current Resource */
420 virtual void turnOff();
428 /** @brief Get the lmm constraint associated to this Resource if it is part of a LMM component (or null if none) */
429 lmm_constraint_t constraint() const;
432 const lmm_constraint_t constraint_ = nullptr;
439 template <> class hash<simgrid::surf::Resource> {
441 std::size_t operator()(const simgrid::surf::Resource& r) const { return (std::size_t)xbt_str_hash(r.getCname()); }
445 #endif /* SURF_MODEL_H_ */