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.h"
15 #include <boost/intrusive/list.hpp>
18 #include <unordered_map>
20 #define NO_MAX_DURATION -1.0
26 /* user-visible parameters */
27 extern XBT_PRIVATE double sg_tcp_gamma;
28 extern XBT_PRIVATE double sg_latency_factor;
29 extern XBT_PRIVATE double sg_bandwidth_factor;
30 extern XBT_PRIVATE double sg_weight_S_parameter;
31 extern XBT_PRIVATE int sg_network_crosstraffic;
32 extern XBT_PRIVATE std::vector<std::string> surf_path;
33 extern XBT_PRIVATE std::unordered_map<std::string, tmgr_trace_t> traces_set_list;
34 extern XBT_PRIVATE std::set<std::string> watched_hosts;
37 XBT_PUBLIC(double) surf_get_clock();
39 /** \ingroup SURF_simulation
40 * \brief List of hosts that have just restarted and whose autorestart process should be restarted.
42 XBT_PUBLIC_DATA(std::vector<sg_host_t>) host_that_restart;
47 extern XBT_PRIVATE simgrid::xbt::signal<void()> surfExitCallbacks;
51 int XBT_PRIVATE __surf_is_absolute_file_path(const char *file_path);
57 enum heap_action_type{
68 XBT_PRIVATE void surf_action_lmm_update_index_heap(void *action, int i);
70 /** \ingroup SURF_models
71 * \brief List of initialized models
73 XBT_PUBLIC_DATA(std::vector<surf_model_t>*) all_existing_models;
78 /** @ingroup SURF_interface
79 * @brief SURF action interface class
80 * @details An action is an event generated by a resource (e.g.: a communication for the network)
82 XBT_PUBLIC_CLASS Action {
84 boost::intrusive::list_member_hook<> action_hook;
85 boost::intrusive::list_member_hook<> action_lmm_hook;
86 typedef boost::intrusive::member_hook<
87 Action, boost::intrusive::list_member_hook<>, &Action::action_hook> ActionOptions;
88 typedef boost::intrusive::list<Action, ActionOptions> ActionList;
91 ready = 0, /**< Ready */
92 running, /**< Running */
93 failed, /**< Task Failure */
94 done, /**< Completed */
95 to_free, /**< Action to free in next cleanup */
96 not_in_the_system /**< Not in the system anymore. Why did you ask ? */
100 * @brief Action constructor
102 * @param model The Model associated to this Action
103 * @param cost The cost of the Action
104 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
106 Action(simgrid::surf::Model *model, double cost, bool failed);
109 * @brief Action constructor
111 * @param model The Model associated to this Action
112 * @param cost The cost of the Action
113 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
114 * @param var The lmm variable associated to this Action if it is part of a LMM component
116 Action(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var);
118 /** @brief Destructor */
122 * @brief Mark that the action is now finished
124 * @param state the new [state](\ref simgrid::surf::Action::State) of the current Action
126 void finish(Action::State state);
128 /** @brief Get the [state](\ref simgrid::surf::Action::State) of the current Action */
129 Action::State getState(); /**< get the state*/
130 /** @brief Set the [state](\ref simgrid::surf::Action::State) of the current Action */
131 virtual void setState(Action::State state);
133 /** @brief Get the bound of the current Action */
135 /** @brief Set the bound of the current Action */
136 void setBound(double bound);
138 /** @brief Get the start time of the current action */
139 double getStartTime();
140 /** @brief Get the finish time of the current action */
141 double getFinishTime();
143 /** @brief Get the user data associated to the current action */
144 void *getData() {return data_;}
145 /** @brief Set the user data associated to the current action */
146 void setData(void* data);
148 /** @brief Get the cost of the current action */
149 double getCost() {return cost_;}
150 /** @brief Set the cost of the current action */
151 void setCost(double cost) {cost_ = cost;}
153 /** @brief Update the maximum duration of the current action
154 * @param delta Amount to remove from the MaxDuration */
155 void updateMaxDuration(double delta) {double_update(&maxDuration_, delta,sg_surf_precision);}
157 /** @brief Update the remaining time of the current action
158 * @param delta Amount to remove from the remaining time */
159 void updateRemains(double delta) {double_update(&remains_, delta, sg_maxmin_precision*sg_surf_precision);}
161 /** @brief Set the remaining time of the current action */
162 void setRemains(double value) {remains_ = value;}
163 /** @brief Get the remaining time of the current action after updating the resource */
164 virtual double getRemains();
165 /** @brief Get the remaining time of the current action without updating the resource */
166 double getRemainsNoUpdate();
168 /** @brief Set the finish time of the current action */
169 void setFinishTime(double value) {finishTime_ = value;}
171 /**@brief Add a reference to the current action (refcounting) */
173 /** @brief Unref that action (and destroy it if refcount reaches 0)
174 * @return true if the action was destroyed and false if someone still has references on it
178 /** @brief Cancel the current Action if running */
179 virtual void cancel();
181 /** @brief Suspend the current Action */
182 virtual void suspend();
184 /** @brief Resume the current Action */
185 virtual void resume();
187 /** @brief Returns true if the current action is running */
188 virtual bool isSuspended();
190 /** @brief Get the maximum duration of the current action */
191 double getMaxDuration() {return maxDuration_;}
192 /** @brief Set the maximum duration of the current Action */
193 virtual void setMaxDuration(double duration);
195 /** @brief Get the tracing category associated to the current action */
196 char *getCategory() {return category_;}
197 /** @brief Set the tracing category of the current Action */
198 void setCategory(const char *category);
200 /** @brief Get the priority of the current Action */
201 double getPriority() { return sharingWeight_; };
202 /** @brief Set the priority of the current Action */
203 virtual void setSharingWeight(double priority);
205 /** @brief Get the state set in which the action is */
206 ActionList* getStateSet() {return stateSet_;};
208 s_xbt_swag_hookup_t stateHookup_ = {nullptr,nullptr};
210 simgrid::surf::Model* getModel() { return model_; }
213 ActionList* stateSet_;
214 double sharingWeight_ = 1.0; /**< priority (1.0 by default) */
216 double remains_; /**< How much of that cost remains to be done in the currently running task */
217 double maxDuration_ = NO_MAX_DURATION; /*< max_duration (may fluctuate until the task is completed) */
218 double finishTime_ = -1; /**< finish time : this is modified during the run and fluctuates until the task is completed */
221 double start_; /**< start time */
222 char *category_ = nullptr; /**< tracing category for categorized resource utilization monitoring */
225 simgrid::surf::Model *model_;
226 void *data_ = nullptr; /**< for your convenience */
230 virtual void updateRemainingLazy(double now) { THROW_IMPOSSIBLE; };
231 void heapInsert(xbt_heap_t heap, double key, enum heap_action_type hat);
232 void heapRemove(xbt_heap_t heap);
233 void heapUpdate(xbt_heap_t heap, double key, enum heap_action_type hat);
234 virtual void updateIndexHeap(int i);
235 lmm_variable_t getVariable() {return variable_;}
236 double getLastUpdate() {return lastUpdate_;}
237 void refreshLastUpdate() {lastUpdate_ = surf_get_clock();}
238 enum heap_action_type getHat() {return hat_;}
239 bool is_linked() {return action_lmm_hook.is_linked();}
242 lmm_variable_t variable_ = nullptr;
243 double lastValue_ = 0;
244 double lastUpdate_ = 0;
247 enum heap_action_type hat_ = NOTSET;
250 typedef Action::ActionList ActionList;
252 typedef boost::intrusive::member_hook<
253 Action, boost::intrusive::list_member_hook<>, &Action::action_lmm_hook> ActionLmmOptions;
254 typedef boost::intrusive::list<Action, ActionLmmOptions> ActionLmmList;
255 typedef ActionLmmList* ActionLmmListPtr;
261 /** @ingroup SURF_interface
262 * @brief SURF model interface class
263 * @details A model is an object which handle the interactions between its Resources and its Actions
265 XBT_PUBLIC_CLASS Model {
270 /** @brief Get the set of [actions](@ref Action) in *ready* state */
271 virtual ActionList* getReadyActionSet() {return readyActionSet_;}
273 /** @brief Get the set of [actions](@ref Action) in *running* state */
274 virtual ActionList* getRunningActionSet() {return runningActionSet_;}
276 /** @brief Get the set of [actions](@ref Action) in *failed* state */
277 virtual ActionList* getFailedActionSet() {return failedActionSet_;}
279 /** @brief Get the set of [actions](@ref Action) in *done* state */
280 virtual ActionList* getDoneActionSet() {return doneActionSet_;}
282 /** @brief Get the set of modified [actions](@ref Action) */
283 virtual ActionLmmListPtr getModifiedSet() {return modifiedSet_;}
285 /** @brief Get the maxmin system of the current Model */
286 lmm_system_t getMaxminSystem() {return maxminSystem_;}
289 * @brief Get the update mechanism of the current Model
292 e_UM_t getUpdateMechanism() {return updateMechanism_;}
294 /** @brief Get Action heap */
295 xbt_heap_t getActionHeap() {return actionHeap_;}
298 * @brief Share the resources between the actions
300 * @param now The current time of the simulation
301 * @return The delta of time till the next action will finish
303 virtual double nextOccuringEvent(double now);
304 virtual double nextOccuringEventLazy(double now);
305 virtual double nextOccuringEventFull(double now);
308 * @brief Update action to the current time
310 * @param now The current time of the simulation
311 * @param delta The delta of time since the last update
313 virtual void updateActionsState(double now, double delta);
314 virtual void updateActionsStateLazy(double now, double delta);
315 virtual void updateActionsStateFull(double now, double delta);
317 /** @brief Returns whether this model have an idempotent shareResource()
319 * The only model that is not is NS3: computing the next timestamp moves the model up to that point,
320 * so we need to call it only when the next timestamp of other sources is computed.
322 virtual bool nextOccuringEventIsIdempotent() { return true;}
325 ActionLmmListPtr modifiedSet_;
326 lmm_system_t maxminSystem_ = nullptr;
327 e_UM_t updateMechanism_ = UM_UNDEFINED;
328 bool selectiveUpdate_;
329 xbt_heap_t actionHeap_;
332 ActionList* readyActionSet_; /**< Actions in state SURF_ACTION_READY */
333 ActionList* runningActionSet_; /**< Actions in state SURF_ACTION_RUNNING */
334 ActionList* failedActionSet_; /**< Actions in state SURF_ACTION_FAILED */
335 ActionList* doneActionSet_; /**< Actions in state SURF_ACTION_DONE */
345 /** @ingroup SURF_interface
346 * @brief Resource which have a metric handled by a maxmin system
348 struct s_surf_metric_t {
349 double peak; /**< The peak of the metric, ie its max value */
350 double scale; /**< Current availability of the metric according to the traces, in [0,1] */
351 tmgr_trace_event_t event; /**< The associated trace event associated to the metric */
357 /** @ingroup SURF_interface
358 * @brief SURF resource interface class
359 * @details This is the ancestor class of every resources in SimGrid, such as links, CPU or storage
361 XBT_PUBLIC_CLASS Resource {
364 * @brief Constructor of LMM Resources
366 * @param model Model associated to this Resource
367 * @param name The name of the Resource
368 * @param constraint The lmm constraint associated to this Resource if it is part of a LMM component
370 Resource(Model * model, const std::string& name, lmm_constraint_t constraint);
374 /** @brief Get the Model of the current Resource */
375 Model* model() const;
377 /** @brief Get the name of the current Resource */
378 const std::string& getName() const;
379 /** @brief Get the name of the current Resource */
380 const char* getCname() const;
382 bool operator==(const Resource &other) const;
385 * @brief Apply an event of external load event to that resource
387 * @param event What happened
388 * @param value [TODO]
390 virtual void apply_event(tmgr_trace_event_t event, double value) = 0;
392 /** @brief Check if the current Resource is used (if it currently serves an action) */
393 virtual bool isUsed()=0;
395 /** @brief Check if the current Resource is active */
396 virtual bool isOn() const;
397 /** @brief Check if the current Resource is shut down */
398 virtual bool isOff() const;
399 /** @brief Turn on the current Resource */
400 virtual void turnOn();
401 /** @brief Turn off the current Resource */
402 virtual void turnOff();
410 /** @brief Get the lmm constraint associated to this Resource if it is part of a LMM component (or null if none) */
411 lmm_constraint_t constraint() const;
414 const lmm_constraint_t constraint_ = nullptr;
421 template <> class hash<simgrid::surf::Resource> {
423 std::size_t operator()(const simgrid::surf::Resource& r) const { return (std::size_t)xbt_str_hash(r.getCname()); }
427 #endif /* SURF_MODEL_H_ */