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"
10 #include "xbt/utility.hpp"
12 #include "src/surf/surf_private.hpp"
13 #include "surf/surf.hpp"
16 #include <boost/heap/pairing_heap.hpp>
17 #include <boost/intrusive/list.hpp>
18 #include <boost/optional.hpp>
21 #include <unordered_map>
23 #define NO_MAX_DURATION -1.0
29 /* user-visible parameters */
30 extern XBT_PRIVATE double sg_tcp_gamma;
31 extern XBT_PRIVATE double sg_latency_factor;
32 extern XBT_PRIVATE double sg_bandwidth_factor;
33 extern XBT_PRIVATE double sg_weight_S_parameter;
34 extern XBT_PRIVATE int sg_network_crosstraffic;
35 extern XBT_PRIVATE std::vector<std::string> surf_path;
36 extern XBT_PRIVATE std::unordered_map<std::string, tmgr_trace_t> traces_set_list;
37 extern XBT_PRIVATE std::set<std::string> watched_hosts;
40 XBT_PUBLIC(double) surf_get_clock();
42 /** \ingroup SURF_simulation
43 * \brief List of hosts that have just restarted and whose autorestart process should be restarted.
45 XBT_PUBLIC_DATA(std::vector<sg_host_t>) host_that_restart;
50 extern XBT_PRIVATE simgrid::xbt::signal<void()> surfExitCallbacks;
54 int XBT_PRIVATE __surf_is_absolute_file_path(const char *file_path);
60 enum heap_action_type{
71 /** \ingroup SURF_models
72 * \brief List of initialized models
74 XBT_PUBLIC_DATA(std::vector<surf_model_t>*) all_existing_models;
79 typedef std::pair<double, simgrid::surf::Action*> heap_element_type;
80 typedef boost::heap::pairing_heap<heap_element_type, boost::heap::constant_time_size<false>, boost::heap::stable<true>,
81 boost::heap::compare<simgrid::xbt::HeapComparator<heap_element_type>>>
84 /** @ingroup SURF_interface
85 * @brief SURF action interface class
86 * @details An action is an event generated by a resource (e.g.: a communication for the network)
88 XBT_PUBLIC_CLASS Action {
90 boost::intrusive::list_member_hook<> action_hook;
91 boost::intrusive::list_member_hook<> action_lmm_hook;
92 typedef boost::intrusive::member_hook<
93 Action, boost::intrusive::list_member_hook<>, &Action::action_hook> ActionOptions;
94 typedef boost::intrusive::list<Action, ActionOptions> ActionList;
97 ready = 0, /**< Ready */
98 running, /**< Running */
99 failed, /**< Task Failure */
100 done, /**< Completed */
101 to_free, /**< Action to free in next cleanup */
102 not_in_the_system /**< Not in the system anymore. Why did you ask ? */
106 * @brief Action constructor
108 * @param model The Model associated to this Action
109 * @param cost The cost of the Action
110 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
112 Action(simgrid::surf::Model *model, double cost, bool failed);
115 * @brief Action constructor
117 * @param model The Model associated to this Action
118 * @param cost The cost of the Action
119 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
120 * @param var The lmm variable associated to this Action if it is part of a LMM component
122 Action(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var);
124 /** @brief Destructor */
128 * @brief Mark that the action is now finished
130 * @param state the new [state](\ref simgrid::surf::Action::State) of the current Action
132 void finish(Action::State state);
134 /** @brief Get the [state](\ref simgrid::surf::Action::State) of the current Action */
135 Action::State getState(); /**< get the state*/
136 /** @brief Set the [state](\ref simgrid::surf::Action::State) of the current Action */
137 virtual void setState(Action::State state);
139 /** @brief Get the bound of the current Action */
141 /** @brief Set the bound of the current Action */
142 void setBound(double bound);
144 /** @brief Get the start time of the current action */
145 double getStartTime();
146 /** @brief Get the finish time of the current action */
147 double getFinishTime();
149 /** @brief Get the user data associated to the current action */
150 void *getData() {return data_;}
151 /** @brief Set the user data associated to the current action */
152 void setData(void* data);
154 /** @brief Get the cost of the current action */
155 double getCost() {return cost_;}
156 /** @brief Set the cost of the current action */
157 void setCost(double cost) {cost_ = cost;}
159 /** @brief Update the maximum duration of the current action
160 * @param delta Amount to remove from the MaxDuration */
161 void updateMaxDuration(double delta) {double_update(&maxDuration_, delta,sg_surf_precision);}
163 /** @brief Update the remaining time of the current action
164 * @param delta Amount to remove from the remaining time */
165 void updateRemains(double delta) {double_update(&remains_, delta, sg_maxmin_precision*sg_surf_precision);}
167 /** @brief Set the remaining time of the current action */
168 void setRemains(double value) {remains_ = value;}
169 /** @brief Get the remaining time of the current action after updating the resource */
170 virtual double getRemains();
171 /** @brief Get the remaining time of the current action without updating the resource */
172 double getRemainsNoUpdate();
174 /** @brief Set the finish time of the current action */
175 void setFinishTime(double value) {finishTime_ = value;}
177 /**@brief Add a reference to the current action (refcounting) */
179 /** @brief Unref that action (and destroy it if refcount reaches 0)
180 * @return true if the action was destroyed and false if someone still has references on it
184 /** @brief Cancel the current Action if running */
185 virtual void cancel();
187 /** @brief Suspend the current Action */
188 virtual void suspend();
190 /** @brief Resume the current Action */
191 virtual void resume();
193 /** @brief Returns true if the current action is running */
194 virtual bool isSuspended();
196 /** @brief Get the maximum duration of the current action */
197 double getMaxDuration() {return maxDuration_;}
198 /** @brief Set the maximum duration of the current Action */
199 virtual void setMaxDuration(double duration);
201 /** @brief Get the tracing category associated to the current action */
202 char *getCategory() {return category_;}
203 /** @brief Set the tracing category of the current Action */
204 void setCategory(const char *category);
206 /** @brief Get the priority of the current Action */
207 double getPriority() { return sharingWeight_; };
208 /** @brief Set the priority of the current Action */
209 virtual void setSharingWeight(double priority);
210 void setSharingWeightNoUpdate(double weight) { sharingWeight_ = weight; }
212 /** @brief Get the state set in which the action is */
213 ActionList* getStateSet() {return stateSet_;};
215 s_xbt_swag_hookup_t stateHookup_ = {nullptr,nullptr};
217 simgrid::surf::Model* getModel() { return model_; }
220 ActionList* stateSet_;
224 double sharingWeight_ = 1.0; /**< priority (1.0 by default) */
225 double maxDuration_ = NO_MAX_DURATION; /*< max_duration (may fluctuate until the task is completed) */
226 double remains_; /**< How much of that cost remains to be done in the currently running task */
227 double start_; /**< start time */
228 char *category_ = nullptr; /**< tracing category for categorized resource utilization monitoring */
230 -1; /**< finish time : this is modified during the run and fluctuates until the task is completed */
233 simgrid::surf::Model *model_;
234 void *data_ = nullptr; /**< for your convenience */
237 double lastUpdate_ = 0;
238 double lastValue_ = 0;
239 lmm_variable_t variable_ = nullptr;
240 enum heap_action_type hat_ = NOTSET;
241 boost::optional<heap_type::handle_type> heapHandle_ = boost::none;
244 virtual void updateRemainingLazy(double now) { THROW_IMPOSSIBLE; };
245 void heapInsert(heap_type& heap, double key, enum heap_action_type hat);
246 void heapRemove(heap_type& heap);
247 void heapUpdate(heap_type& heap, double key, enum heap_action_type hat);
248 void clearHeapHandle() { heapHandle_ = boost::none; }
249 lmm_variable_t getVariable() {return variable_;}
250 void setVariable(lmm_variable_t var) { variable_ = var; }
251 double getLastUpdate() {return lastUpdate_;}
252 void refreshLastUpdate() {lastUpdate_ = surf_get_clock();}
253 double getLastValue() { return lastValue_; }
254 void setLastValue(double val) { lastValue_ = val; }
255 enum heap_action_type getHat() { return hat_; }
256 bool is_linked() {return action_lmm_hook.is_linked();}
261 typedef Action::ActionList ActionList;
263 typedef boost::intrusive::member_hook<
264 Action, boost::intrusive::list_member_hook<>, &Action::action_lmm_hook> ActionLmmOptions;
265 typedef boost::intrusive::list<Action, ActionLmmOptions> ActionLmmList;
266 typedef ActionLmmList* ActionLmmListPtr;
272 /** @ingroup SURF_interface
273 * @brief SURF model interface class
274 * @details A model is an object which handle the interactions between its Resources and its Actions
276 XBT_PUBLIC_CLASS Model {
281 /** @brief Get the set of [actions](@ref Action) in *ready* state */
282 virtual ActionList* getReadyActionSet() {return readyActionSet_;}
284 /** @brief Get the set of [actions](@ref Action) in *running* state */
285 virtual ActionList* getRunningActionSet() {return runningActionSet_;}
287 /** @brief Get the set of [actions](@ref Action) in *failed* state */
288 virtual ActionList* getFailedActionSet() {return failedActionSet_;}
290 /** @brief Get the set of [actions](@ref Action) in *done* state */
291 virtual ActionList* getDoneActionSet() {return doneActionSet_;}
293 /** @brief Get the set of modified [actions](@ref Action) */
294 virtual ActionLmmListPtr getModifiedSet() {return modifiedSet_;}
296 /** @brief Get the maxmin system of the current Model */
297 lmm_system_t getMaxminSystem() {return maxminSystem_;}
300 * @brief Get the update mechanism of the current Model
303 e_UM_t getUpdateMechanism() {return updateMechanism_;}
304 void setUpdateMechanism(e_UM_t mechanism) { updateMechanism_ = mechanism; }
306 /** @brief Get Action heap */
307 heap_type& getActionHeap() { return actionHeap_; }
309 double actionHeapTopDate() const { return actionHeap_.top().first; }
310 Action* actionHeapPop();
311 bool actionHeapIsEmpty() const { return actionHeap_.empty(); }
314 * @brief Share the resources between the actions
316 * @param now The current time of the simulation
317 * @return The delta of time till the next action will finish
319 virtual double nextOccuringEvent(double now);
320 virtual double nextOccuringEventLazy(double now);
321 virtual double nextOccuringEventFull(double now);
324 * @brief Update action to the current time
326 * @param now The current time of the simulation
327 * @param delta The delta of time since the last update
329 virtual void updateActionsState(double now, double delta);
330 virtual void updateActionsStateLazy(double now, double delta);
331 virtual void updateActionsStateFull(double now, double delta);
333 /** @brief Returns whether this model have an idempotent shareResource()
335 * The only model that is not is NS3: computing the next timestamp moves the model up to that point,
336 * so we need to call it only when the next timestamp of other sources is computed.
338 virtual bool nextOccuringEventIsIdempotent() { return true;}
341 ActionLmmListPtr modifiedSet_;
342 lmm_system_t maxminSystem_ = nullptr;
343 bool selectiveUpdate_;
346 e_UM_t updateMechanism_ = UM_UNDEFINED;
347 ActionList* readyActionSet_; /**< Actions in state SURF_ACTION_READY */
348 ActionList* runningActionSet_; /**< Actions in state SURF_ACTION_RUNNING */
349 ActionList* failedActionSet_; /**< Actions in state SURF_ACTION_FAILED */
350 ActionList* doneActionSet_; /**< Actions in state SURF_ACTION_DONE */
351 heap_type actionHeap_;
361 /** @ingroup SURF_interface
362 * @brief Resource which have a metric handled by a maxmin system
364 struct s_surf_metric_t {
365 double peak; /**< The peak of the metric, ie its max value */
366 double scale; /**< Current availability of the metric according to the traces, in [0,1] */
367 tmgr_trace_event_t event; /**< The associated trace event associated to the metric */
373 /** @ingroup SURF_interface
374 * @brief SURF resource interface class
375 * @details This is the ancestor class of every resources in SimGrid, such as links, CPU or storage
377 XBT_PUBLIC_CLASS Resource {
380 * @brief Constructor of LMM Resources
382 * @param model Model associated to this Resource
383 * @param name The name of the Resource
384 * @param constraint The lmm constraint associated to this Resource if it is part of a LMM component
386 Resource(Model * model, const std::string& name, lmm_constraint_t constraint);
390 /** @brief Get the Model of the current Resource */
391 Model* model() const;
393 /** @brief Get the name of the current Resource */
394 const std::string& getName() const;
395 /** @brief Get the name of the current Resource */
396 const char* getCname() const;
398 bool operator==(const Resource &other) const;
401 * @brief Apply an event of external load event to that resource
403 * @param event What happened
404 * @param value [TODO]
406 virtual void apply_event(tmgr_trace_event_t event, double value) = 0;
408 /** @brief Check if the current Resource is used (if it currently serves an action) */
409 virtual bool isUsed()=0;
411 /** @brief Check if the current Resource is active */
412 virtual bool isOn() const;
413 /** @brief Check if the current Resource is shut down */
414 virtual bool isOff() const;
415 /** @brief Turn on the current Resource */
416 virtual void turnOn();
417 /** @brief Turn off the current Resource */
418 virtual void turnOff();
426 /** @brief Get the lmm constraint associated to this Resource if it is part of a LMM component (or null if none) */
427 lmm_constraint_t constraint() const;
430 const lmm_constraint_t constraint_ = nullptr;
437 template <> class hash<simgrid::surf::Resource> {
439 std::size_t operator()(const simgrid::surf::Resource& r) const { return (std::size_t)xbt_str_hash(r.getCname()); }
443 #endif /* SURF_MODEL_H_ */