1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "xbt/dynar.h"
13 #include "xbt/graph.h"
16 #include "xbt/config.h"
17 #include "surf/datatypes.h"
19 #include "surf/solver.h"
20 #include "surf/surf_routing.h"
21 #include "simgrid/platf_interface.h"
24 /* Actions and models are highly connected structures... */
26 /* user-visible parameters */
27 extern double sg_tcp_gamma;
28 extern double sg_sender_gap;
29 extern double sg_latency_factor;
30 extern double sg_bandwidth_factor;
31 extern double sg_weight_S_parameter;
32 extern int sg_network_crosstraffic;
34 extern double sg_gtnets_jitter;
35 extern int sg_gtnets_jitter_seed;
37 extern xbt_dynar_t surf_path;
41 SURF_NETWORK_ELEMENT_NULL = 0, /* NULL */
42 SURF_NETWORK_ELEMENT_HOST, /* host type */
43 SURF_NETWORK_ELEMENT_ROUTER, /* router type */
44 SURF_NETWORK_ELEMENT_AS /* AS type */
45 } e_surf_network_element_type_t;
47 XBT_PUBLIC(e_surf_network_element_type_t)
48 routing_get_network_element_type(const char* name);
50 /** @Brief Specify that we use that action */
51 XBT_PUBLIC(void) surf_action_ref(surf_action_t action);
53 /** @brief Creates a new action.
55 * @param size The size is the one of the subtype you want to create
56 * @param cost initial value
57 * @param model to which model we should attach this action
58 * @param failed whether we should start this action in failed mode
60 XBT_PUBLIC(void *) surf_action_new(size_t size, double cost,
61 surf_model_t model, int failed);
63 /** \brief Resource model description
65 typedef struct surf_model_description {
67 const char *description;
68 void_f_void_t model_init_preparse;
69 } s_surf_model_description_t, *surf_model_description_t;
71 XBT_PUBLIC(int) find_model_description(s_surf_model_description_t * table,
73 XBT_PUBLIC(void) model_help(const char *category,
74 s_surf_model_description_t * table);
76 enum heap_action_type{
83 /** \ingroup SURF_actions
84 * \brief Action structure
86 * Never create s_surf_action_t by yourself ! The actions are created
87 * on the fly when you call execute or communicate on a model.
89 * \see e_surf_action_state_t
91 typedef struct surf_action {
92 s_xbt_swag_hookup_t state_hookup;
94 double cost; /**< cost */
95 double priority; /**< priority (1.0 by default) */
96 double max_duration; /**< max_duration (may fluctuate until
97 the task is completed) */
98 double remains; /**< How much of that cost remains to
99 * be done in the currently running task */
100 #ifdef HAVE_LATENCY_BOUND_TRACKING
101 int latency_limited; /**< Set to 1 if is limited by latency, 0 otherwise */
104 double start; /**< start time */
105 double finish; /**< finish time : this is modified during the run
106 * and fluctuates until the task is completed */
107 void *data; /**< for your convenience */
109 surf_model_t model_type;
111 char *category; /**< tracing category for categorized resource utilization monitoring */
113 surf_file_t file; /**< surf_file_t for storage model */
117 typedef struct surf_action_lmm {
118 s_surf_action_t generic_action;
119 lmm_variable_t variable;
121 s_xbt_swag_hookup_t action_list_hookup;
125 enum heap_action_type hat;
126 } s_surf_action_lmm_t, *surf_action_lmm_t;
128 /** \ingroup SURF_actions
129 * \brief Action states
133 * \see surf_action_t, surf_action_state_t
136 SURF_ACTION_READY = 0, /**< Ready */
137 SURF_ACTION_RUNNING, /**< Running */
138 SURF_ACTION_FAILED, /**< Task Failure */
139 SURF_ACTION_DONE, /**< Completed */
140 SURF_ACTION_TO_FREE, /**< Action to free in next cleanup */
141 SURF_ACTION_NOT_IN_THE_SYSTEM
142 /**< Not in the system anymore. Why did you ask ? */
143 } e_surf_action_state_t;
145 /** \ingroup SURF_actions
146 * \brief Action state sets
148 * This structure contains some sets of actions.
149 * It provides a fast access to the actions in each state.
151 * \see surf_action_t, e_surf_action_state_t
153 typedef struct surf_action_state {
154 xbt_swag_t ready_action_set;
155 /**< Actions in state SURF_ACTION_READY */
156 xbt_swag_t running_action_set;
157 /**< Actions in state SURF_ACTION_RUNNING */
158 xbt_swag_t failed_action_set;
159 /**< Actions in state SURF_ACTION_FAILED */
160 xbt_swag_t done_action_set;
161 /**< Actions in state SURF_ACTION_DONE */
162 } s_surf_action_state_t, *surf_action_state_t;
164 /***************************/
165 /* Generic model object */
166 /***************************/
167 typedef struct s_routing_platf s_routing_platf_t, *routing_platf_t;
168 XBT_PUBLIC_DATA(routing_platf_t) routing_platf;
170 /*******************************************
171 * TUTORIAL: New model
172 * New model extension public
173 * Public functions specific to a New model.
175 typedef struct surf_new_model_extension_public {
176 surf_action_t(*fct) ();
177 void* (*create_resource) ();
178 } s_surf_model_extension_new_model_t;
179 /*******************************************/
181 /** \ingroup SURF_models
182 * \brief Private data available on all models
184 typedef struct surf_model_private *surf_model_private_t;
188 /** \ingroup SURF_models
189 * \brief CPU model extension public
191 * Public functions specific to the CPU model.
193 typedef struct surf_cpu_model_extension_public {
194 surf_action_t(*execute) (void *cpu, double size);
195 surf_action_t(*sleep) (void *cpu, double duration);
196 e_surf_resource_state_t(*get_state) (void *cpu);
197 int (*get_core) (void *cpu);
198 double (*get_speed) (void *cpu, double load);
199 double (*get_available_speed) (void *cpu);
200 void (*add_traces) (void);
201 } s_surf_model_extension_cpu_t;
205 /** \ingroup SURF_models
206 * \brief Network model extension public
208 * Public functions specific to the network model
210 typedef struct surf_network_model_extension_public {
211 surf_action_t (*communicate) (sg_routing_edge_t src,
212 sg_routing_edge_t dst,
213 double size, double rate);
214 xbt_dynar_t(*get_route) (void *src, void *dst); //FIXME: kill field? That is done by the routing nowadays
215 double (*get_link_bandwidth) (const void *link);
216 double (*get_link_latency) (const void *link);
217 int (*link_shared) (const void *link);
218 void (*add_traces) (void);
219 } s_surf_model_extension_network_t;
223 /** \ingroup SURF_models
224 * \brief Storage model extension public
226 * Public functions specific to the Storage model.
229 typedef struct surf_storage_model_extension_public {
230 surf_action_t(*open) (void *storage, const char* mount, const char* path);
231 surf_action_t(*close) (void *storage, surf_file_t fd);
232 surf_action_t(*read) (void *storage, void* ptr, size_t size,
234 surf_action_t(*write) (void *storage, const void* ptr, size_t size,
236 surf_action_t(*stat) (void *storage, surf_file_t fd);
237 surf_action_t(*ls) (void *storage, const char *path);
238 } s_surf_model_extension_storage_t;
240 /** \ingroup SURF_models
241 * \brief Workstation model extension public
243 * Public functions specific to the workstation model.
245 typedef struct surf_workstation_model_extension_public {
246 surf_action_t(*execute) (void *workstation, double size); /**< Execute a computation amount on a workstation
247 and create the corresponding action */
248 surf_action_t(*sleep) (void *workstation, double duration); /**< Make a workstation sleep during a given duration */
249 e_surf_resource_state_t(*get_state) (void *workstation); /**< Return the CPU state of a workstation */
250 int (*get_core) (void *workstation);
251 double (*get_speed) (void *workstation, double load); /**< Return the speed of a workstation */
252 double (*get_available_speed) (void *workstation); /**< Return tha available speed of a workstation */
253 surf_action_t(*communicate) (void *workstation_src, /**< Execute a communication amount between two workstations */
254 void *workstation_dst, double size,
256 // FIXME: kill next field, which duplicates the routing
257 xbt_dynar_t(*get_route) (void *workstation_src, void *workstation_dst); /**< Get the list of links between two ws */
259 surf_action_t(*execute_parallel_task) (int workstation_nb, /**< Execute a parallel task on several workstations */
260 void **workstation_list,
261 double *computation_amount,
262 double *communication_amount,
264 double (*get_link_bandwidth) (const void *link); /**< Return the current bandwidth of a network link */
265 double (*get_link_latency) (const void *link); /**< Return the current latency of a network link */
266 surf_action_t(*open) (void *workstation, const char* storage,
268 surf_action_t(*close) (void *workstation, surf_file_t fd);
269 surf_action_t(*read) (void *workstation, void* ptr, size_t size,
271 surf_action_t(*write) (void *workstation, const void* ptr, size_t size,
273 surf_action_t(*stat) (void *workstation, surf_file_t fd);
274 int(*unlink) (void *workstation, surf_file_t fd);
275 surf_action_t(*ls) (void *workstation, const char* mount, const char *path);
276 size_t (*get_size) (void *workstation, surf_file_t fd);
278 int (*link_shared) (const void *link);
279 xbt_dict_t(*get_properties) (const void *resource);
280 void (*add_traces) (void);
282 } s_surf_model_extension_workstation_t;
287 /** \ingroup SURF_models
288 * \brief Model datatype
290 * Generic data structure for a model. The workstations,
291 * the CPUs and the network links are examples of models.
293 typedef struct surf_model {
294 const char *name; /**< Name of this model */
295 s_surf_action_state_t states; /**< Any living action on this model */
297 e_surf_action_state_t(*action_state_get) (surf_action_t action);
298 /**< Return the state of an action */
299 void (*action_state_set) (surf_action_t action,
300 e_surf_action_state_t state);
301 /**< Change an action state*/
303 double (*action_get_start_time) (surf_action_t action); /**< Return the start time of an action */
304 double (*action_get_finish_time) (surf_action_t action); /**< Return the finish time of an action */
305 int (*action_unref) (surf_action_t action); /**< Specify that we don't use that action anymore. Returns true if the action was destroyed and false if someone still has references on it. */
306 void (*action_cancel) (surf_action_t action); /**< Cancel a running action */
307 void (*action_recycle) (surf_action_t action); /**< Recycle an action */
308 void (*action_data_set) (surf_action_t action, void *data); /**< Set the user data of an action */
309 void (*suspend) (surf_action_t action); /**< Suspend an action */
310 void (*resume) (surf_action_t action); /**< Resume a suspended action */
311 int (*is_suspended) (surf_action_t action); /**< Return whether an action is suspended */
312 void (*set_max_duration) (surf_action_t action, double duration); /**< Set the max duration of an action*/
313 void (*set_priority) (surf_action_t action, double priority); /**< Set the priority of an action */
315 void (*set_category) (surf_action_t action, const char *category); /**< Set the category of an action */
317 double (*get_remains) (surf_action_t action); /**< Get the remains of an action */
318 #ifdef HAVE_LATENCY_BOUND_TRACKING
319 int (*get_latency_limited) (surf_action_t action); /**< Return 1 if action is limited by latency, 0 otherwise */
322 void (*gap_remove) (surf_action_lmm_t action);
324 surf_model_private_t model_private;
327 s_surf_model_extension_cpu_t cpu;
328 s_surf_model_extension_network_t network;
329 s_surf_model_extension_storage_t storage;
330 s_surf_model_extension_workstation_t workstation;
331 /*******************************************/
332 /* TUTORIAL: New model */
333 s_surf_model_extension_new_model_t new_model;
334 /*******************************************/
338 surf_model_t surf_model_init(void);
339 void surf_model_exit(surf_model_t model);
341 static inline void *surf_cpu_resource_priv(const void *host) {
342 return xbt_lib_get_level((void *)host, SURF_CPU_LEVEL);
344 static inline void *surf_workstation_resource_priv(const void *host){
345 return xbt_lib_get_level((void *)host, SURF_WKS_LEVEL);
347 static inline void *surf_storage_resource_priv(const void *host){
348 return xbt_lib_get_level((void *)host, SURF_STORAGE_LEVEL);
351 static inline void *surf_cpu_resource_by_name(const char *name) {
352 return xbt_lib_get_elm_or_null(host_lib, name);
354 static inline void *surf_workstation_resource_by_name(const char *name){
355 return xbt_lib_get_elm_or_null(host_lib, name);
357 static inline void *surf_storage_resource_by_name(const char *name){
358 return xbt_lib_get_elm_or_null(storage_lib, name);
361 typedef struct surf_resource {
364 xbt_dict_t properties;
365 } s_surf_resource_t, *surf_resource_t;
368 * Resource which have a metric handled by a maxmin system
373 tmgr_trace_event_t event;
376 typedef struct surf_resource_lmm {
377 s_surf_resource_t generic_resource;
378 lmm_constraint_t constraint;
379 e_surf_resource_state_t state_current;
380 tmgr_trace_event_t state_event;
381 s_surf_metric_t power;
382 } s_surf_resource_lmm_t, *surf_resource_lmm_t;
384 /**************************************/
385 /* Implementations of model object */
386 /**************************************/
389 /** \ingroup SURF_models
390 * \brief The CPU model
392 XBT_PUBLIC_DATA(surf_model_t) surf_cpu_model;
394 /** \ingroup SURF_models
395 * \brief Initializes the CPU model with the model Cas01
397 * By default, this model uses the lazy optimization mechanism that
398 * relies on partial invalidation in LMM and a heap for lazy action update.
399 * You can change this behavior by setting the cpu/optim configuration
400 * variable to a different value.
402 * You shouldn't have to call it by yourself.
404 XBT_PUBLIC(void) surf_cpu_model_init_Cas01(void);
406 /** \ingroup SURF_models
407 * \brief Initializes the CPU model with trace integration [Deprecated]
409 * You shouldn't have to call it by yourself.
411 XBT_PUBLIC(void) surf_cpu_model_init_ti(void);
413 /** \ingroup SURF_models
414 * \brief The list of all available optimization modes (both for cpu and networks).
415 * These optimization modes can be set using --cfg=cpu/optim:... and --cfg=network/optim:...
417 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_optimization_mode_description[];
419 /** \ingroup SURF_models
420 * \brief The list of all available cpu model models
422 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_cpu_model_description[];
424 /**\brief create new host bypass the parser
429 /** \ingroup SURF_models
430 * \brief The network model
432 * When creating a new API on top on SURF, you shouldn't use the
433 * network model unless you know what you are doing. Only the workstation
434 * model should be accessed because depending on the platform model,
435 * the network model can be NULL.
437 XBT_PUBLIC_DATA(surf_model_t) surf_network_model;
439 /** \ingroup SURF_models
440 * \brief Same as network model 'LagrangeVelho', only with different correction factors.
442 * This model is proposed by Pierre-Nicolas Clauss and Martin Quinson and Stéphane Génaud
443 * based on the model 'LV08' and different correction factors depending on the communication
444 * size (< 1KiB, < 64KiB, >= 64KiB).
445 * See comments in the code for more information.
447 * \see surf_workstation_model_init_SMPI()
449 XBT_PUBLIC(void) surf_network_model_init_SMPI(void);
451 /** \ingroup SURF_models
452 * \brief Initializes the platform with the network model 'LegrandVelho'
454 * This model is proposed by Arnaud Legrand and Pedro Velho based on
455 * the results obtained with the GTNets simulator for onelink and
456 * dogbone sharing scenarios. See comments in the code for more information.
458 * \see surf_workstation_model_init_LegrandVelho()
460 XBT_PUBLIC(void) surf_network_model_init_LegrandVelho(void);
462 /** \ingroup SURF_models
463 * \brief Initializes the platform with the network model 'Constant'
465 * In this model, the communication time between two network cards is
466 * constant, hence no need for a routing table. This is particularly
467 * usefull when simulating huge distributed algorithms where
468 * scalability is really an issue. This function is called in
469 * conjunction with surf_workstation_model_init_compound.
471 * \see surf_workstation_model_init_compound()
473 XBT_PUBLIC(void) surf_network_model_init_Constant(void);
475 /** \ingroup SURF_models
476 * \brief Initializes the platform with the network model CM02
478 * You sould call this function by yourself only if you plan using
479 * surf_workstation_model_init_compound.
480 * See comments in the code for more information.
482 XBT_PUBLIC(void) surf_network_model_init_CM02(void);
485 /** \ingroup SURF_models
486 * \brief Initializes the platform with the network model GTNETS
487 * \param filename XML platform file name
489 * This function is called by surf_workstation_model_init_GTNETS
490 * or by yourself only if you plan using surf_workstation_model_init_compound
492 * \see surf_workstation_model_init_GTNETS()
494 XBT_PUBLIC(void) surf_network_model_init_GTNETS(void);
498 /** \ingroup SURF_models
499 * \brief Initializes the platform with the network model NS3
500 * \param filename XML platform file name
502 * This function is called by surf_workstation_model_init_NS3
503 * or by yourself only if you plan using surf_workstation_model_init_compound
505 * \see surf_workstation_model_init_NS3()
507 XBT_PUBLIC(void) surf_network_model_init_NS3(void);
510 /** \ingroup SURF_models
511 * \brief Initializes the platform with the network model Reno
512 * \param filename XML platform file name
514 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
517 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
518 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
520 * Call this function only if you plan using surf_workstation_model_init_compound.
523 XBT_PUBLIC(void) surf_network_model_init_Reno(void);
525 /** \ingroup SURF_models
526 * \brief Initializes the platform with the network model Reno2
527 * \param filename XML platform file name
529 * The problem is related to max( sum( arctan(C * Df * xi) ) ).
532 * [LOW01] S. H. Low. A duality model of TCP and queue management algorithms.
533 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
535 * Call this function only if you plan using surf_workstation_model_init_compound.
538 XBT_PUBLIC(void) surf_network_model_init_Reno2(void);
540 /** \ingroup SURF_models
541 * \brief Initializes the platform with the network model Vegas
542 * \param filename XML platform file name
544 * This problem is related to max( sum( a * Df * ln(xi) ) ) which is equivalent
545 * to the proportional fairness.
548 * [LOW03] S. H. Low. A duality model of TCP and queue management algorithms.
549 * IEEE/ACM Transaction on Networking, 11(4):525-536, 2003.
551 * Call this function only if you plan using surf_workstation_model_init_compound.
554 XBT_PUBLIC(void) surf_network_model_init_Vegas(void);
556 /** \ingroup SURF_models
557 * \brief The list of all available network model models
559 XBT_PUBLIC_DATA(s_surf_model_description_t)
560 surf_network_model_description[];
562 /** \ingroup SURF_models
563 * \brief The storage model
565 XBT_PUBLIC(void) surf_storage_model_init_default(void);
567 /** \ingroup SURF_models
568 * \brief The list of all available storage modes.
569 * This storage mode can be set using --cfg=storage/model:...
571 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_storage_model_description[];
573 /** \ingroup SURF_models
574 * \brief The workstation model
576 * Note that when you create an API on top of SURF,
577 * the workstation model should be the only one you use
578 * because depending on the platform model, the network model and the CPU model
581 XBT_PUBLIC_DATA(surf_model_t) surf_workstation_model;
583 /** \ingroup SURF_models
584 * \brief Initializes the platform with a compound workstation model
586 * This function should be called after a cpu_model and a
587 * network_model have been set up.
590 XBT_PUBLIC(void) surf_workstation_model_init_compound(void);
592 /** \ingroup SURF_models
593 * \brief Initializes the platform with the current best network and cpu models at hand
595 * This platform model seperates the workstation model and the network model.
596 * The workstation model will be initialized with the model compound, the network
597 * model with the model LV08 (with cross traffic support) and the CPU model with
599 * Such model is subject to modification with warning in the ChangeLog so monitor it!
602 XBT_PUBLIC(void) surf_workstation_model_init_current_default(void);
604 /** \ingroup SURF_models
605 * \brief Initializes the platform with the model KCCFLN05
607 * With this model, only parallel tasks can be used. Resource sharing
608 * is done by identifying bottlenecks and giving an equal share of
609 * the model to each action.
612 XBT_PUBLIC(void) surf_workstation_model_init_ptask_L07(void);
614 /** \ingroup SURF_models
615 * \brief The list of all available workstation model models
617 XBT_PUBLIC_DATA(s_surf_model_description_t)
618 surf_workstation_model_description[];
620 /*******************************************
621 * TUTORIAL: New model
623 XBT_PUBLIC(void) surf_new_model_init_default(void);
624 XBT_PUBLIC_DATA(s_surf_model_description_t) surf_new_model_description[];
625 /*******************************************/
627 /** \ingroup SURF_models
628 * \brief List of initialized models
630 XBT_PUBLIC_DATA(xbt_dynar_t) model_list;
632 /*******************************************/
633 /*** SURF Platform *************************/
634 /*******************************************/
635 typedef struct s_as *AS_t;
637 XBT_PUBLIC_DATA(AS_t) surf_AS_get_routing_root(void);
638 XBT_PUBLIC_DATA(const char *) surf_AS_get_name(AS_t as);
639 XBT_PUBLIC_DATA(xbt_dict_t) surf_AS_get_routing_sons(AS_t as);
640 XBT_PUBLIC_DATA(const char *) surf_AS_get_model(AS_t as);
641 XBT_PUBLIC_DATA(xbt_dynar_t) surf_AS_get_hosts(AS_t as);
643 /*******************************************/
644 /*** SURF Globals **************************/
645 /*******************************************/
647 /** \ingroup SURF_simulation
648 * \brief Initialize SURF
649 * \param argc argument number
650 * \param argv arguments
652 * This function has to be called to initialize the common
653 * structures. Then you will have to create the environment by
655 * e.g. surf_workstation_model_init_CM02()
657 * \see surf_workstation_model_init_CM02(), surf_workstation_model_init_compound(), surf_exit()
659 XBT_PUBLIC(void) surf_init(int *argc, char **argv); /* initialize common structures */
661 /** \ingroup SURF_simulation
662 * \brief Finish simulation initialization
664 * This function must be called before the first call to surf_solve()
666 XBT_PUBLIC(void) surf_presolve(void);
668 /** \ingroup SURF_simulation
669 * \brief Performs a part of the simulation
670 * \param max_date Maximum date to update the simulation to, or -1
671 * \return the elapsed time, or -1.0 if no event could be executed
673 * This function execute all possible events, update the action states
674 * and returns the time elapsed.
675 * When you call execute or communicate on a model, the corresponding actions
676 * are not executed immediately but only when you call surf_solve.
677 * Note that the returned elapsed time can be zero.
679 XBT_PUBLIC(double) surf_solve(double max_date);
681 /** \ingroup SURF_simulation
682 * \brief Return the current time
684 * Return the current time in millisecond.
686 XBT_PUBLIC(double) surf_get_clock(void);
688 /** \ingroup SURF_simulation
695 XBT_PUBLIC(void) surf_exit(void);
697 /* Prototypes of the functions that handle the properties */
698 XBT_PUBLIC_DATA(xbt_dict_t) current_property_set; /* the prop set for the currently parsed element (also used in SIMIX) */
700 /* surf parse file related (public because called from a test suite) */
701 XBT_PUBLIC(void) parse_platform_file(const char *file);
703 /* For the trace and trace:connect tag (store their content till the end of the parsing) */
704 XBT_PUBLIC_DATA(xbt_dict_t) traces_set_list;
705 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_host_avail;
706 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_power;
707 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_link_avail;
708 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_bandwidth;
709 XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_latency;
712 XBT_PUBLIC(double) get_cpu_power(const char *power);
714 XBT_PUBLIC(xbt_dict_t) get_as_router_properties(const char* name);
716 int surf_get_nthreads(void);
717 void surf_set_nthreads(int nthreads);
719 void surf_watched_hosts(void);
722 * Returns the initial path. On Windows the initial path is
723 * the current directory for the current process in the other
724 * case the function returns "./" that represents the current
725 * directory on Unix/Linux platforms.
727 const char *__surf_get_initial_path(void);
729 /********** Tracing **********/
730 /* from surf_instr.c */
731 void TRACE_surf_action(surf_action_t surf_action, const char *category);
732 void TRACE_surf_alloc(void);
733 void TRACE_surf_release(void);
735 /* instr_routing.c */
736 void instr_routing_define_callbacks (void);
737 void instr_new_variable_type (const char *new_typename, const char *color);
738 void instr_new_user_variable_type (const char *father_type, const char *new_typename, const char *color);
739 void instr_new_user_state_type (const char *father_type, const char *new_typename);
740 void instr_new_value_for_user_state_type (const char *typename, const char *value, const char *color);
741 int instr_platform_traced (void);
742 xbt_graph_t instr_routing_platform_graph (void);
743 void instr_routing_platform_graph_export_graphviz (xbt_graph_t g, const char *filename);
746 #endif /* _SURF_SURF_H */