1 /* Copyright (c) 2004-2016. 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.h"
12 #include "surf/surf.h"
13 #include "surf/surf_routing.h"
16 #include <boost/intrusive/list.hpp>
19 #define NO_MAX_DURATION -1.0
25 /* user-visible parameters */
26 extern XBT_PRIVATE double sg_tcp_gamma;
27 extern XBT_PRIVATE double sg_sender_gap;
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;
35 XBT_PUBLIC(double) surf_get_clock();
37 /** \ingroup SURF_simulation
38 * \brief List of hosts that have just restarted and whose autorestart process should be restarted.
40 XBT_PUBLIC_DATA(std::vector<sg_host_t>) host_that_restart;
43 extern XBT_PRIVATE double sg_sender_gap;
48 extern XBT_PRIVATE simgrid::xbt::signal<void()> surfExitCallbacks;
52 int XBT_PRIVATE __surf_is_absolute_file_path(const char *file_path);
58 enum heap_action_type{
68 /* For the trace and trace:connect tag (store their content till the end of the parsing) */
69 XBT_PUBLIC_DATA(xbt_dict_t) traces_set_list;
75 XBT_PRIVATE void surf_action_lmm_update_index_heap(void *action, int i);
77 /** \ingroup SURF_models
78 * \brief List of initialized models
80 XBT_PUBLIC_DATA(std::vector<surf_model_t>*) all_existing_models;
85 /** @ingroup SURF_interface
86 * @brief SURF action interface class
87 * @details An action is an event generated by a resource (e.g.: a communication for the network)
89 XBT_PUBLIC_CLASS Action {
91 boost::intrusive::list_member_hook<> action_hook;
92 boost::intrusive::list_member_hook<> action_lmm_hook;
93 typedef boost::intrusive::member_hook<
94 Action, boost::intrusive::list_member_hook<>, &Action::action_hook> ActionOptions;
95 typedef boost::intrusive::list<Action, ActionOptions> ActionList;
98 ready = 0, /**< Ready */
99 running, /**< Running */
100 failed, /**< Task Failure */
101 done, /**< Completed */
102 to_free, /**< Action to free in next cleanup */
103 not_in_the_system /**< Not in the system anymore. Why did you ask ? */
107 * @brief Action constructor
109 * @param model The Model associated to this Action
110 * @param cost The cost of the Action
111 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
113 Action(simgrid::surf::Model *model, double cost, bool failed);
116 * @brief Action constructor
118 * @param model The Model associated to this Action
119 * @param cost The cost of the Action
120 * @param failed If the action is impossible (e.g.: execute something on a switched off host)
121 * @param var The lmm variable associated to this Action if it is part of a LMM component
123 Action(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var);
125 /** @brief Destructor */
128 /** @brief Mark that the action is now finished */
131 /** @brief Get the [state](\ref simgrid::surf::Action::State) of the current Action */
132 Action::State getState(); /**< get the state*/
133 /** @brief Set the [state](\ref simgrid::surf::Action::State) of the current Action */
134 virtual void setState(Action::State state);
136 /** @brief Get the bound of the current Action */
138 /** @brief Set the bound of the current Action */
139 void setBound(double bound);
141 /** @brief Get the start time of the current action */
142 double getStartTime();
143 /** @brief Get the finish time of the current action */
144 double getFinishTime();
146 /** @brief Get the user data associated to the current action */
147 void *getData() {return data_;}
148 /** @brief Set the user data associated to the current action */
149 void setData(void* data);
151 /** @brief Get the cost of the current action */
152 double getCost() {return cost_;}
153 /** @brief Set the cost of the current action */
154 void setCost(double cost) {cost_ = cost;}
156 /** @brief Update the maximum duration of the current action
157 * @param delta Amount to remove from the MaxDuration */
158 void updateMaxDuration(double delta) {double_update(&maxDuration_, delta,sg_surf_precision);}
160 /** @brief Update the remaining time of the current action
161 * @param delta Amount to remove from the remaining time */
162 void updateRemains(double delta) {double_update(&remains_, delta, sg_maxmin_precision*sg_surf_precision);}
164 /** @brief Set the remaining time of the current action */
165 void setRemains(double value) {remains_ = value;}
166 /** @brief Get the remaining time of the current action after updating the resource */
167 virtual double getRemains();
168 /** @brief Get the remaining time of the current action without updating the resource */
169 double getRemainsNoUpdate();
171 /** @brief Set the finish time of the current action */
172 void setFinishTime(double value) {finishTime_ = value;}
174 /**@brief Add a reference to the current action (refcounting) */
176 /** @brief Unref that action (and destroy it if refcount reaches 0)
177 * @return true if the action was destroyed and false if someone still has references on it
181 /** @brief Cancel the current Action if running */
182 virtual void cancel();
184 /** @brief Suspend the current Action */
185 virtual void suspend();
187 /** @brief Resume the current Action */
188 virtual void resume();
190 /** @brief Returns true if the current action is running */
191 virtual bool isSuspended();
193 /** @brief Get the maximum duration of the current action */
194 double getMaxDuration() {return maxDuration_;}
195 /** @brief Set the maximum duration of the current Action */
196 virtual void setMaxDuration(double duration);
198 /** @brief Get the tracing category associated to the current action */
199 char *getCategory() {return category_;}
200 /** @brief Set the tracing category of the current Action */
201 void setCategory(const char *category);
203 /** @brief Get the priority of the current Action */
204 double getPriority() {return priority_;};
205 /** @brief Set the priority of the current Action */
206 virtual void setPriority(double priority);
208 /** @brief Get the state set in which the action is */
209 ActionList* getStateSet() {return stateSet_;};
211 s_xbt_swag_hookup_t stateHookup_ = {nullptr,nullptr};
213 simgrid::surf::Model* getModel() { return model_; }
216 ActionList* stateSet_;
217 double priority_ = 1.0; /**< priority (1.0 by default) */
219 double remains_; /**< How much of that cost remains to be done in the currently running task */
220 double maxDuration_ = NO_MAX_DURATION; /*< max_duration (may fluctuate until the task is completed) */
221 double finishTime_ = -1; /**< finish time : this is modified during the run and fluctuates until the task is completed */
224 double start_; /**< start time */
225 char *category_ = nullptr; /**< tracing category for categorized resource utilization monitoring */
228 simgrid::surf::Model *model_;
229 void *data_ = nullptr; /**< for your convenience */
233 virtual void updateRemainingLazy(double now);
234 void heapInsert(xbt_heap_t heap, double key, enum heap_action_type hat);
235 void heapRemove(xbt_heap_t heap);
236 void heapUpdate(xbt_heap_t heap, double key, enum heap_action_type hat);
237 void updateIndexHeap(int i);
238 lmm_variable_t getVariable() {return variable_;}
239 double getLastUpdate() {return lastUpdate_;}
240 void refreshLastUpdate() {lastUpdate_ = surf_get_clock();}
241 enum heap_action_type getHat() {return hat_;}
242 bool is_linked() {return action_lmm_hook.is_linked();}
246 lmm_variable_t variable_ = nullptr;
247 double lastValue_ = 0;
248 double lastUpdate_ = 0;
251 enum heap_action_type hat_ = NOTSET;
254 typedef Action::ActionList ActionList;
256 typedef boost::intrusive::member_hook<
257 Action, boost::intrusive::list_member_hook<>, &Action::action_lmm_hook> ActionLmmOptions;
258 typedef boost::intrusive::list<Action, ActionLmmOptions> ActionLmmList;
259 typedef ActionLmmList* ActionLmmListPtr;
265 /** @ingroup SURF_interface
266 * @brief SURF model interface class
267 * @details A model is an object which handle the interactions between its Resources and its Actions
269 XBT_PUBLIC_CLASS Model {
274 /** @brief Get the set of [actions](@ref Action) in *ready* state */
275 virtual ActionList* getReadyActionSet() {return readyActionSet_;}
277 /** @brief Get the set of [actions](@ref Action) in *running* state */
278 virtual ActionList* getRunningActionSet() {return runningActionSet_;}
280 /** @brief Get the set of [actions](@ref Action) in *failed* state */
281 virtual ActionList* getFailedActionSet() {return failedActionSet_;}
283 /** @brief Get the set of [actions](@ref Action) in *done* state */
284 virtual ActionList* getDoneActionSet() {return doneActionSet_;}
286 /** @brief Get the set of modified [actions](@ref Action) */
287 virtual ActionLmmListPtr getModifiedSet() {return modifiedSet_;}
289 /** @brief Get the maxmin system of the current Model */
290 lmm_system_t getMaxminSystem() {return maxminSystem_;}
293 * @brief Get the update mechanism of the current Model
296 e_UM_t getUpdateMechanism() {return updateMechanism_;}
298 /** @brief Get Action heap */
299 xbt_heap_t getActionHeap() {return actionHeap_;}
302 * @brief Share the resources between the actions
304 * @param now The current time of the simulation
305 * @return The delta of time till the next action will finish
307 virtual double nextOccuringEvent(double now);
308 virtual double nextOccuringEventLazy(double now);
309 virtual double nextOccuringEventFull(double now);
312 * @brief Update action to the current time
314 * @param now The current time of the simulation
315 * @param delta The delta of time since the last update
317 virtual void updateActionsState(double now, double delta);
318 virtual void updateActionsStateLazy(double now, double delta);
319 virtual void updateActionsStateFull(double now, double delta);
321 /** @brief Returns whether this model have an idempotent shareResource()
323 * The only model that is not is NS3: computing the next timestamp moves the model up to that point,
324 * so we need to call it only when the next timestamp of other sources is computed.
326 virtual bool nextOccuringEventIsIdempotent() { return true;}
329 ActionLmmListPtr modifiedSet_;
330 lmm_system_t maxminSystem_ = nullptr;
331 e_UM_t updateMechanism_ = UM_UNDEFINED;
332 bool selectiveUpdate_;
333 xbt_heap_t actionHeap_;
336 ActionList* readyActionSet_; /**< Actions in state SURF_ACTION_READY */
337 ActionList* runningActionSet_; /**< Actions in state SURF_ACTION_RUNNING */
338 ActionList* failedActionSet_; /**< Actions in state SURF_ACTION_FAILED */
339 ActionList* doneActionSet_; /**< Actions in state SURF_ACTION_DONE */
349 /** @ingroup SURF_interface
350 * @brief Resource which have a metric handled by a maxmin system
353 double peak; /**< The peak of the metric, ie its max value */
354 double scale; /**< Current availability of the metric according to the traces, in [0,1] */
355 tmgr_trace_event_t event; /**< The associated trace event associated to the metric */
361 /** @ingroup SURF_interface
362 * @brief SURF resource interface class
363 * @details This is the ancestor class of every resources in SimGrid, such as links, CPU or storage
365 XBT_PUBLIC_CLASS Resource {
368 * @brief Constructor of LMM Resources
370 * @param model Model associated to this Resource
371 * @param name The name of the Resource
372 * @param constraint The lmm constraint associated to this Resource if it is part of a LMM component
374 Resource(Model *model, const char *name, lmm_constraint_t constraint);
378 /** @brief Get the Model of the current Resource */
379 Model* model() const;
381 /** @brief Get the name of the current Resource */
382 const char* cname() const;
384 bool operator==(const Resource &other) const;
387 * @brief Apply an event of external load event to that resource
389 * @param event What happened
390 * @param value [TODO]
392 virtual void apply_event(tmgr_trace_event_t event, double value) = 0;
394 /** @brief Check if the current Resource is used (if it currently serves an action) */
395 virtual bool isUsed()=0;
397 /** @brief Check if the current Resource is active */
398 virtual bool isOn() const;
399 /** @brief Check if the current Resource is shut down */
400 virtual bool isOff() const;
401 /** @brief Turn on the current Resource */
402 virtual void turnOn();
403 /** @brief Turn off the current Resource */
404 virtual void turnOff();
412 /** @brief Get the lmm constraint associated to this Resource if it is part of a LMM component (or null if none) */
413 lmm_constraint_t constraint() const;
416 const lmm_constraint_t constraint_ = nullptr;
424 struct hash<simgrid::surf::Resource>
426 std::size_t operator()(const simgrid::surf::Resource& r) const
428 return (std::size_t) xbt_str_hash(r.cname());
433 #endif /* SURF_MODEL_H_ */