include/simgrid/simix.h

   1 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #ifndef _SIMIX_SIMIX_H
   8 #define _SIMIX_SIMIX_H
   9
  10 #include "xbt/misc.h"
  11 #include "xbt/fifo.h"
  12 #include "xbt/dict.h"
  13 #include "xbt/file_stat.h"
  14 #include "xbt/function_types.h"
  15 #include "xbt/parmap.h"
  16 #include "xbt/swag.h"
  17
  18 SG_BEGIN_DECL()
  19
  20
  21 /* ******************************** Host ************************************ */
  22 /** @defgroup m_datatypes_management_details Details on SIMIX datatypes */
  23 /** @brief Host datatype
  24     @ingroup m_datatypes_management
  25
  26     A <em>location</em> (or <em>host</em>) is any possible place where
  27     a process may run. Thus it is represented as a <em>physical
  28     resource with computing capabilities</em>, some <em>mailboxes</em>
  29     to enable running process to communicate with remote ones, and
  30     some <em>private data</em> that can be only accessed by local
  31     process.
  32
  33     \see m_host_management
  34   @{ */
  35 typedef struct s_smx_host *smx_host_t;
  36 typedef enum {
  37   SIMIX_WAITING,
  38   SIMIX_READY,
  39   SIMIX_RUNNING,
  40   SIMIX_DONE,
  41   SIMIX_CANCELED,
  42   SIMIX_FAILED,
  43   SIMIX_SRC_HOST_FAILURE,
  44   SIMIX_DST_HOST_FAILURE,
  45   SIMIX_SRC_TIMEOUT,
  46   SIMIX_DST_TIMEOUT,
  47   SIMIX_LINK_FAILURE
  48 } e_smx_state_t;
  49 /** @} */
  50
  51
  52 typedef struct s_smx_timer* smx_timer_t;
  53
  54 /* ******************************** Synchro ************************************ */
  55 typedef struct s_smx_mutex *smx_mutex_t;
  56 typedef struct s_smx_cond *smx_cond_t;
  57 typedef struct s_smx_sem *smx_sem_t;
  58
  59 /********************************** File *************************************/
  60 typedef struct s_smx_file *smx_file_t;
  61 typedef struct s_smx_stat *smx_stat_t;
  62
  63 /********************************** Action *************************************/
  64 typedef struct s_smx_action *smx_action_t; /* FIXME: replace by specialized action handlers */
  65
  66
  67
  68 /* ****************************** Process *********************************** */
  69 /** @brief Process datatype
  70     @ingroup m_datatypes_management
  71
  72     A processt may be defined as a <em>code</em>, with some <em>private
  73     data</em>, executing in a <em>location</em>.
  74     \see m_process_management
  75   @{ */
  76 typedef struct s_smx_process *smx_process_t;
  77 /** @} */
  78
  79
  80 /*
  81  * Type of function that creates a process.
  82  * The function must accept the following parameters:
  83  * void* process: the process created will be stored there
  84  * const char *name: a name for the object. It is for user-level information and can be NULL
  85  * xbt_main_func_t code: is a function describing the behavior of the process
  86  * void *data: data a pointer to any data one may want to attach to the new object.
  87  * smx_host_t host: the location where the new process is executed
  88  * int argc, char **argv: parameters passed to code
  89  * xbt_dict_t pros: properties
  90  */
  91 typedef void (*smx_creation_func_t) ( /* process */ smx_process_t*,
  92                                       /* name */ const char*,
  93                                       /* code */ xbt_main_func_t,
  94                                       /* userdata */ void*,
  95                                       /* hostname */ const char*,
  96                                       /* kill_time */ double,
  97                                       /* argc */ int,
  98                                       /* argv */ char**,
  99                                       /* props */ xbt_dict_t,
 100                                       /* auto_restart */ int);
 101
 102
 103 /******************************* Networking ***********************************/
 104 typedef struct s_smx_rvpoint *smx_rdv_t;
 105
 106 /******************************** Context *************************************/
 107 typedef struct s_smx_context *smx_context_t;
 108 typedef struct s_smx_context_factory *smx_context_factory_t;
 109
 110 /* Process creation/destruction callbacks */
 111 typedef void (*void_pfn_smxprocess_t) (smx_process_t);
 112
 113 /* for function autorestart */
 114 typedef void (*void_pfn_smxhost_t) (smx_host_t);
 115
 116 /* The following function pointer types describe the interface that any context
 117    factory should implement */
 118
 119
 120 typedef smx_context_t(*smx_pfn_context_factory_create_context_t)
 121   (xbt_main_func_t, int, char **, void_pfn_smxprocess_t, void* data);
 122 typedef int (*smx_pfn_context_factory_finalize_t) (smx_context_factory_t*);
 123 typedef void (*smx_pfn_context_free_t) (smx_context_t);
 124 typedef void (*smx_pfn_context_start_t) (smx_context_t);
 125 typedef void (*smx_pfn_context_stop_t) (smx_context_t);
 126 typedef void (*smx_pfn_context_suspend_t) (smx_context_t context);
 127 typedef void (*smx_pfn_context_runall_t) (void);
 128 typedef smx_context_t (*smx_pfn_context_self_t) (void);
 129 typedef void* (*smx_pfn_context_get_data_t) (smx_context_t context);
 130
 131 /* interface of the context factories */
 132 typedef struct s_smx_context_factory {
 133   const char *name;
 134   smx_pfn_context_factory_create_context_t create_context;
 135   smx_pfn_context_factory_finalize_t finalize;
 136   smx_pfn_context_free_t free;
 137   smx_pfn_context_stop_t stop;
 138   smx_pfn_context_suspend_t suspend;
 139   smx_pfn_context_runall_t runall;
 140   smx_pfn_context_self_t self;
 141   smx_pfn_context_get_data_t get_data;
 142 } s_smx_context_factory_t;
 143
 144 /* Hack: let msg load directly the right factory */
 145 typedef void (*smx_ctx_factory_initializer_t)(smx_context_factory_t*);
 146 XBT_PUBLIC(smx_ctx_factory_initializer_t) smx_factory_initializer_to_use;
 147 extern char* smx_context_factory_name;
 148 extern int smx_context_stack_size;
 149
 150 #ifdef HAVE_THREAD_LOCAL_STORAGE
 151 extern __thread smx_context_t smx_current_context;
 152 #else
 153 extern smx_context_t smx_current_context;
 154 #endif
 155
 156 /* *********************** */
 157 /* Context type definition */
 158 /* *********************** */
 159 /* the following function pointers types describe the interface that all context
 160    concepts must implement */
 161 /* each context type derive from this structure, so they must contain this structure
 162  * at their beginning -- OOP in C :/ */
 163 typedef struct s_smx_context {
 164   s_xbt_swag_hookup_t hookup;
 165   xbt_main_func_t code;
 166   void_pfn_smxprocess_t cleanup_func;
 167   void *data;   /* Here SIMIX stores the smx_process_t containing the context */
 168   char **argv;
 169   int argc;
 170   unsigned iwannadie:1;
 171 } s_smx_ctx_base_t;
 172
 173 /* methods of this class */
 174 XBT_PUBLIC(void) smx_ctx_base_factory_init(smx_context_factory_t *factory);
 175 XBT_PUBLIC(int) smx_ctx_base_factory_finalize(smx_context_factory_t *factory);
 176
 177 XBT_PUBLIC(smx_context_t)
 178 smx_ctx_base_factory_create_context_sized(size_t size,
 179                                           xbt_main_func_t code, int argc,
 180                                           char **argv,
 181                                           void_pfn_smxprocess_t cleanup,
 182                                           void* data);
 183 XBT_PUBLIC(void) smx_ctx_base_free(smx_context_t context);
 184 XBT_PUBLIC(void) smx_ctx_base_stop(smx_context_t context);
 185 XBT_PUBLIC(smx_context_t) smx_ctx_base_self(void);
 186 XBT_PUBLIC(void) *smx_ctx_base_get_data(smx_context_t context);
 187
 188 XBT_PUBLIC(xbt_dynar_t) SIMIX_process_get_runnable(void);
 189 XBT_PUBLIC(smx_process_t) SIMIX_process_from_PID(int PID);
 190 XBT_PUBLIC(xbt_dynar_t) SIMIX_processes_as_dynar(void);
 191
 192 /* parallelism */
 193 XBT_PUBLIC(int) SIMIX_context_is_parallel(void);
 194 XBT_PUBLIC(int) SIMIX_context_get_nthreads(void);
 195 XBT_PUBLIC(void) SIMIX_context_set_nthreads(int nb_threads);
 196 XBT_PUBLIC(int) SIMIX_context_get_parallel_threshold(void);
 197 XBT_PUBLIC(void) SIMIX_context_set_parallel_threshold(int threshold);
 198 XBT_PUBLIC(e_xbt_parmap_mode_t) SIMIX_context_get_parallel_mode(void);
 199 XBT_PUBLIC(void) SIMIX_context_set_parallel_mode(e_xbt_parmap_mode_t mode);
 200
 201
 202
 203 /********************************** Global ************************************/
 204 /* Initialization and exit */
 205 XBT_PUBLIC(void) SIMIX_global_init(int *argc, char **argv);
 206 XBT_PUBLIC(void) SIMIX_clean(void);
 207
 208
 209 XBT_PUBLIC(void) SIMIX_function_register_process_cleanup(void_pfn_smxprocess_t function);
 210 XBT_PUBLIC(void) SIMIX_function_register_process_create(smx_creation_func_t function);
 211 XBT_PUBLIC(void) SIMIX_function_register_process_kill(void_pfn_smxprocess_t function);
 212
 213 /* Simulation execution */
 214 XBT_PUBLIC(void) SIMIX_run(void);
 215 XBT_PUBLIC(double) SIMIX_get_clock(void);
 216
 217 /* Timer functions FIXME: should these be public? */
 218 XBT_PUBLIC(void) SIMIX_timer_set(double date, void *function, void *arg);
 219 XBT_PUBLIC(double) SIMIX_timer_next(void);
 220
 221 XBT_PUBLIC(void) SIMIX_display_process_status(void);
 222
 223 /******************************* Environment **********************************/
 224 XBT_PUBLIC(void) SIMIX_create_environment(const char *file);
 225
 226 /******************************** Deployment **********************************/
 227
 228 XBT_PUBLIC(void) SIMIX_function_register(const char *name, xbt_main_func_t code);
 229 XBT_PUBLIC(void) SIMIX_function_register_default(xbt_main_func_t code);
 230 XBT_PUBLIC(xbt_main_func_t) SIMIX_get_registered_function(const char *name);
 231 XBT_PUBLIC(void) SIMIX_launch_application(const char *file);
 232 XBT_PUBLIC(void) SIMIX_process_set_function(const char* process_host,
 233                                             const char *process_function,
 234                                             xbt_dynar_t arguments,
 235                                             double process_start_time,
 236                                             double process_kill_time);
 237
 238 /*********************************** Host *************************************/
 239 XBT_PUBLIC(xbt_dict_t) SIMIX_host_get_dict(void);
 240 XBT_PUBLIC(smx_host_t) SIMIX_host_get_by_name(const char *name);
 241 XBT_PUBLIC(smx_host_t) SIMIX_host_self(void);
 242 XBT_PUBLIC(const char*) SIMIX_host_self_get_name(void);
 243 XBT_PUBLIC(const char*) SIMIX_host_get_name(smx_host_t host); /* FIXME: make private: only the name of SIMIX_host_self() should be public without request */
 244 XBT_PUBLIC(void) SIMIX_host_self_set_data(void *data);
 245 XBT_PUBLIC(void*) SIMIX_host_self_get_data(void);
 246 XBT_PUBLIC(void*) SIMIX_host_get_data(smx_host_t host);
 247 XBT_PUBLIC(void) SIMIX_host_set_data(smx_host_t host, void *data);
 248
 249 /********************************* Process ************************************/
 250 XBT_PUBLIC(int) SIMIX_process_count(void);
 251 XBT_PUBLIC(smx_process_t) SIMIX_process_self(void);
 252 XBT_PUBLIC(const char*) SIMIX_process_self_get_name(void);
 253 XBT_PUBLIC(void) SIMIX_process_self_set_data(smx_process_t self, void *data);
 254 XBT_PUBLIC(void*) SIMIX_process_self_get_data(smx_process_t self);
 255 XBT_PUBLIC(smx_context_t) SIMIX_process_get_context(smx_process_t);
 256 XBT_PUBLIC(void) SIMIX_process_set_context(smx_process_t p,smx_context_t c);
 257 XBT_PUBLIC(int) SIMIX_process_has_pending_comms(smx_process_t process);
 258 XBT_PUBLIC(void) SIMIX_process_on_exit_runall(smx_process_t process);
 259 XBT_PUBLIC(void) SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_t fun, void *data);
 260
 261 /****************************** Communication *********************************/
 262 XBT_PUBLIC(void) SIMIX_comm_set_copy_data_callback(void (*callback) (smx_action_t, void*, size_t));
 263 XBT_PUBLIC(void) SIMIX_comm_copy_pointer_callback(smx_action_t comm, void* buff, size_t buff_size);
 264 XBT_PUBLIC(void) SIMIX_comm_copy_buffer_callback(smx_action_t comm, void* buff, size_t buff_size);
 265 XBT_PUBLIC(void) smpi_comm_copy_data_callback(smx_action_t comm, void* buff, size_t buff_size);
 266
 267 XBT_PUBLIC(smx_action_t) SIMIX_comm_get_send_match(smx_rdv_t rdv, int (*match_fun)(void*, void*), void* data);
 268 XBT_PUBLIC(int) SIMIX_comm_has_send_match(smx_rdv_t rdv, int (*match_fun)(void*, void*), void* data);
 269 XBT_PUBLIC(int) SIMIX_comm_has_recv_match(smx_rdv_t rdv, int (*match_fun)(void*, void*), void* data);
 270 XBT_PUBLIC(void) SIMIX_comm_finish(smx_action_t action);
 271
 272 /******************************************************************************/
 273 /*                            SIMIX simcalls                                  */
 274 /******************************************************************************/
 275 /* These functions are a system call-like interface to the simulation kernel. */
 276 /* They can also be called from maestro's context, and they are thread safe.  */
 277 /******************************************************************************/
 278
 279 /******************************* Host simcalls ********************************/
 280 /* TODO use handlers and keep smx_host_t hidden from higher levels */
 281 XBT_PUBLIC(xbt_dict_t) simcall_host_get_dict(void);
 282 XBT_PUBLIC(smx_host_t) simcall_host_get_by_name(const char *name);
 283 XBT_PUBLIC(const char *) simcall_host_get_name(smx_host_t host);
 284 XBT_PUBLIC(xbt_dict_t) simcall_host_get_properties(smx_host_t host);
 285 XBT_PUBLIC(double) simcall_host_get_speed(smx_host_t host);
 286 XBT_PUBLIC(double) simcall_host_get_available_speed(smx_host_t host);
 287 /* Two possible states, 1 - CPU ON and 0 CPU OFF */
 288 XBT_PUBLIC(int) simcall_host_get_state(smx_host_t host);
 289 XBT_PUBLIC(void *) simcall_host_get_data(smx_host_t host);
 290
 291 XBT_PUBLIC(void) simcall_host_set_data(smx_host_t host, void *data);
 292
 293 XBT_PUBLIC(smx_action_t) simcall_host_execute(const char *name, smx_host_t host,
 294                                                 double computation_amount,
 295                                                 double priority);
 296 XBT_PUBLIC(smx_action_t) simcall_host_parallel_execute(const char *name,
 297                                                      int host_nb,
 298                                                      smx_host_t *host_list,
 299                                                      double *computation_amount,
 300                                                      double *communication_amount,
 301                                                      double amount,
 302                                                      double rate);
 303 XBT_PUBLIC(void) simcall_host_execution_destroy(smx_action_t execution);
 304 XBT_PUBLIC(void) simcall_host_execution_cancel(smx_action_t execution);
 305 XBT_PUBLIC(double) simcall_host_execution_get_remains(smx_action_t execution);
 306 XBT_PUBLIC(e_smx_state_t) simcall_host_execution_get_state(smx_action_t execution);
 307 XBT_PUBLIC(void) simcall_host_execution_set_priority(smx_action_t execution, double priority);
 308 XBT_PUBLIC(e_smx_state_t) simcall_host_execution_wait(smx_action_t execution);
 309
 310
 311 /**************************** Process simcalls ********************************/
 312 /* Constructor and Destructor */
 313 XBT_PUBLIC(void) simcall_process_create(smx_process_t *process,
 314                                           const char *name,
 315                                           xbt_main_func_t code,
 316                                           void *data,
 317                                           const char *hostname,
 318                                           double kill_time,
 319                                           int argc, char **argv,
 320                                           xbt_dict_t properties,
 321                                           int auto_restart);
 322
 323 XBT_PUBLIC(void) simcall_process_kill(smx_process_t process);
 324 XBT_PUBLIC(void) simcall_process_killall(void);
 325
 326 /* Process handling */
 327 XBT_PUBLIC(void) simcall_process_cleanup(smx_process_t process);
 328 XBT_PUBLIC(void) simcall_process_change_host(smx_process_t process,
 329                  smx_host_t dest);
 330 XBT_PUBLIC(void) simcall_process_suspend(smx_process_t process);
 331 XBT_PUBLIC(void) simcall_process_resume(smx_process_t process);
 332
 333 /* Getters and Setters */
 334 XBT_PUBLIC(int) simcall_process_count(void);
 335 XBT_PUBLIC(void *) simcall_process_get_data(smx_process_t process);
 336 XBT_PUBLIC(void) simcall_process_set_data(smx_process_t process, void *data);
 337 XBT_PUBLIC(smx_host_t) simcall_process_get_host(smx_process_t process);
 338 XBT_PUBLIC(const char *) simcall_process_get_name(smx_process_t process);
 339 XBT_PUBLIC(int) simcall_process_is_suspended(smx_process_t process);
 340 XBT_PUBLIC(xbt_dict_t) simcall_process_get_properties(smx_process_t host);
 341 XBT_PUBLIC(void) simcall_process_set_kill_time(smx_process_t process, double kill_time);
 342 XBT_PUBLIC(void) simcall_process_on_exit(smx_process_t process, int_f_pvoid_t fun, void *data);
 343 XBT_PUBLIC(void) simcall_process_auto_restart_set(smx_process_t process, int auto_restart);
 344 /* Sleep control */
 345 XBT_PUBLIC(e_smx_state_t) simcall_process_sleep(double duration);
 346
 347 /************************** Comunication simcalls *****************************/
 348 /***** Rendez-vous points *****/
 349
 350 XBT_PUBLIC(smx_rdv_t) simcall_rdv_create(const char *name);
 351 XBT_PUBLIC(void) simcall_rdv_destroy(smx_rdv_t rvp);
 352 XBT_PUBLIC(smx_rdv_t) simcall_rdv_get_by_name(const char *name);
 353 XBT_PUBLIC(int) simcall_rdv_comm_count_by_host(smx_rdv_t rdv, smx_host_t host);
 354 XBT_PUBLIC(smx_action_t) simcall_rdv_get_head(smx_rdv_t rdv);
 355
 356 XBT_PUBLIC(xbt_dict_t) SIMIX_get_rdv_points(void);
 357
 358 /***** Communication simcalls *****/
 359
 360 XBT_PUBLIC(void) simcall_comm_send(smx_rdv_t rdv, double task_size,
 361                                      double rate, void *src_buff,
 362                                      size_t src_buff_size,
 363                                      int (*match_fun)(void *, void *, smx_action_t),
 364                                      void *data, double timeout);
 365
 366 XBT_PUBLIC(smx_action_t) simcall_comm_isend(smx_rdv_t rdv, double task_size,
 367                                               double rate, void *src_buff,
 368                                               size_t src_buff_size,
 369                                               int (*match_fun)(void *, void *, smx_action_t),
 370                                               void (*clean_fun)(void *),
 371                                               void *data, int detached);
 372
 373 XBT_PUBLIC(void) simcall_comm_recv(smx_rdv_t rdv, void *dst_buff,
 374                                      size_t * dst_buff_size,
 375                                      int (*match_fun)(void *, void *, smx_action_t),
 376                                      void *data, double timeout);
 377
 378 XBT_PUBLIC(smx_action_t) simcall_comm_irecv(smx_rdv_t rdv, void *dst_buff,
 379                                               size_t * dst_buff_size,
 380                                               int (*match_fun)(void *, void *, smx_action_t),
 381                                               void *data);
 382
 383 XBT_PUBLIC(void) simcall_comm_destroy(smx_action_t comm);
 384
 385 XBT_PUBLIC(void) simcall_comm_cancel(smx_action_t comm);
 386
 387 /* FIXME: waitany is going to be a vararg function, and should take a timeout */
 388 XBT_PUBLIC(unsigned int) simcall_comm_waitany(xbt_dynar_t comms);
 389 XBT_PUBLIC(void) simcall_comm_wait(smx_action_t comm, double timeout);
 390 XBT_PUBLIC(int) simcall_comm_test(smx_action_t comm);
 391 XBT_PUBLIC(int) simcall_comm_testany(xbt_dynar_t comms);
 392
 393 /* Getters and setters */
 394 XBT_PUBLIC(double) simcall_comm_get_remains(smx_action_t comm);
 395 XBT_PUBLIC(e_smx_state_t) simcall_comm_get_state(smx_action_t comm);
 396 XBT_PUBLIC(void *) simcall_comm_get_src_data(smx_action_t comm);
 397 XBT_PUBLIC(void *) simcall_comm_get_dst_data(smx_action_t comm);
 398 XBT_PUBLIC(smx_process_t) simcall_comm_get_src_proc(smx_action_t comm);
 399 XBT_PUBLIC(smx_process_t) simcall_comm_get_dst_proc(smx_action_t comm);
 400
 401 #ifdef HAVE_LATENCY_BOUND_TRACKING
 402 XBT_PUBLIC(int) simcall_comm_is_latency_bounded(smx_action_t comm);
 403 #endif
 404
 405 #ifdef HAVE_TRACING
 406 /************************** Tracing handling **********************************/
 407 XBT_PUBLIC(void) simcall_set_category(smx_action_t action, const char *category);
 408 #endif
 409
 410 /************************** Synchro simcalls **********************************/
 411
 412 XBT_PUBLIC(smx_mutex_t) simcall_mutex_init(void);
 413 XBT_PUBLIC(void) simcall_mutex_destroy(smx_mutex_t mutex);
 414 XBT_PUBLIC(void) simcall_mutex_lock(smx_mutex_t mutex);
 415 XBT_PUBLIC(int) simcall_mutex_trylock(smx_mutex_t mutex);
 416 XBT_PUBLIC(void) simcall_mutex_unlock(smx_mutex_t mutex);
 417
 418 XBT_PUBLIC(smx_cond_t) simcall_cond_init(void);
 419 XBT_PUBLIC(void) simcall_cond_destroy(smx_cond_t cond);
 420 XBT_PUBLIC(void) simcall_cond_signal(smx_cond_t cond);
 421 XBT_PUBLIC(void) simcall_cond_wait(smx_cond_t cond, smx_mutex_t mutex);
 422 XBT_PUBLIC(void) simcall_cond_wait_timeout(smx_cond_t cond,
 423                                          smx_mutex_t mutex,
 424                                          double max_duration);
 425 XBT_PUBLIC(void) simcall_cond_broadcast(smx_cond_t cond);
 426
 427 XBT_PUBLIC(smx_sem_t) simcall_sem_init(int capacity);
 428 XBT_PUBLIC(void) simcall_sem_destroy(smx_sem_t sem);
 429 XBT_PUBLIC(void) simcall_sem_release(smx_sem_t sem);
 430 XBT_PUBLIC(void) simcall_sem_release_forever(smx_sem_t sem);
 431 XBT_PUBLIC(int) simcall_sem_would_block(smx_sem_t sem);
 432 XBT_PUBLIC(void) simcall_sem_block_onto(smx_sem_t sem);
 433 XBT_PUBLIC(void) simcall_sem_acquire(smx_sem_t sem);
 434 XBT_PUBLIC(void) simcall_sem_acquire_timeout(smx_sem_t sem,
 435                                            double max_duration);
 436 XBT_PUBLIC(unsigned int) simcall_sem_acquire_any(xbt_dynar_t sems);
 437 XBT_PUBLIC(int) simcall_sem_get_capacity(smx_sem_t sem);
 438
 439 XBT_PUBLIC(double) simcall_file_read(void* ptr, size_t size, size_t nmemb, smx_file_t stream);
 440 XBT_PUBLIC(size_t) simcall_file_write(const void* ptr, size_t size, size_t nmemb, smx_file_t stream);
 441 XBT_PUBLIC(smx_file_t) simcall_file_open(const char* storage, const char* path, const char* mode);
 442 XBT_PUBLIC(int) simcall_file_close(smx_file_t fp);
 443 XBT_PUBLIC(int) simcall_file_stat(smx_file_t fd, s_file_stat_t *buf);
 444
 445 SG_END_DECL()
 446 #endif                          /* _SIMIX_SIMIX_H */