src/surf/surf.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 #include <ctype.h>
   9
  10 #include "surf_private.h"
  11 #include "xbt/module.h"
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
  14                                 "Logging specific to SURF (kernel)");
  15
  16 int use_sdp_solver=0;
  17 int use_lagrange_solver=0;
  18
  19 /* Additional declarations for Windows potability. */
  20
  21 #ifndef MAX_DRIVE
  22 #define MAX_DRIVE 26
  23 #endif
  24
  25 #ifdef _WIN32
  26 #include <windows.h>
  27 static const char* disk_drives_letter_table[MAX_DRIVE] =
  28 {
  29         "A:\\",
  30         "B:\\",
  31         "C:\\",
  32         "D:\\",
  33         "E:\\",
  34         "F:\\",
  35         "G:\\",
  36         "H:\\",
  37         "I:\\",
  38         "J:\\",
  39         "K:\\",
  40         "L:\\",
  41         "M:\\",
  42         "N:\\",
  43         "O:\\",
  44         "P:\\",
  45         "Q:\\",
  46         "R:\\",
  47         "S:\\",
  48         "T:\\",
  49         "U:\\",
  50         "V:\\",
  51         "W:\\",
  52         "X:\\",
  53         "Y:\\",
  54         "Z:\\"
  55 };
  56 #endif /* #ifdef _WIN32 */
  57
  58 /*
  59  * Returns the initial path. On Windows the initial path is
  60  * the current directory for the current process in the other
  61  * case the function returns "./" that represents the current
  62  * directory on Unix/Linux platforms.
  63  */
  64
  65 const char* __surf_get_initial_path(void)
  66 {
  67
  68         #ifdef _WIN32
  69         unsigned i;
  70         char current_directory[MAX_PATH + 1] = {0};
  71         unsigned int len = GetCurrentDirectory(MAX_PATH + 1,current_directory);
  72         char root[4] = {0};
  73
  74         if(!len)
  75                 return NULL;
  76
  77         strncpy(root,current_directory,3);
  78
  79         for(i = 0; i<MAX_DRIVE;i++)
  80         {
  81                 if(toupper(root[0]) == disk_drives_letter_table[i][0])
  82                         return disk_drives_letter_table[i];
  83         }
  84
  85         return NULL;
  86         #else
  87         return "./";
  88         #endif
  89 }
  90
  91 /* The __surf_is_absolute_file_path() returns 1 if
  92  * file_path is a absolute file path, in the other
  93  * case the function returns 0.
  94  */
  95 int __surf_is_absolute_file_path(const char* file_path)
  96 {
  97         #ifdef _WIN32
  98         WIN32_FIND_DATA wfd ={0};
  99         HANDLE hFile = FindFirstFile(file_path,&wfd);
 100
 101         if(INVALID_HANDLE_VALUE == hFile)
 102                 return 0;
 103
 104         FindClose(hFile);
 105         return 1;
 106         #else
 107         return (file_path[0] == '/');
 108         #endif
 109 }
 110
 111 typedef struct surf_resource_object {
 112   surf_resource_t resource;
 113 } s_surf_resource_object_t, *surf_resource_object_t;
 114
 115 static double NOW = 0;
 116
 117 xbt_dynar_t resource_list = NULL;
 118 tmgr_history_t history = NULL;
 119 lmm_system_t maxmin_system = NULL;
 120 xbt_dynar_t surf_path = NULL;
 121 const char *surf_action_state_names[6] = {
 122   "SURF_ACTION_READY",
 123   "SURF_ACTION_RUNNING",
 124   "SURF_ACTION_FAILED",
 125   "SURF_ACTION_DONE",
 126   "SURF_ACTION_TO_FREE",
 127   "SURF_ACTION_NOT_IN_THE_SYSTEM"
 128 };
 129
 130 int surf_network_resource_description_size=3
 131   #ifdef HAVE_GTNETS
 132      +1
 133   #endif
 134   #ifdef HAVE_SDP
 135      +1
 136   #endif
 137 ;
 138 s_surf_resource_description_t surf_network_resource_description[]=
 139   {
 140     {"CM02",NULL,surf_network_resource_init_CM02},
 141 #ifdef HAVE_GTNETS
 142     {"GTNets",NULL,surf_network_resource_init_GTNETS},
 143 #endif
 144 #ifdef HAVE_SDP
 145     {"SDP",NULL,surf_network_resource_init_SDP},
 146 #endif
 147     {"Reno",NULL,surf_network_resource_init_Reno},
 148     {"Vegas",NULL,surf_network_resource_init_Vegas}
 149   };
 150
 151 int surf_cpu_resource_description_size=1;
 152 s_surf_resource_description_t surf_cpu_resource_description[]=
 153   {
 154     {"Cas01",NULL,surf_cpu_resource_init_Cas01},
 155   };
 156
 157 int surf_workstation_resource_description_size=3;
 158 s_surf_resource_description_t surf_workstation_resource_description[]=
 159   {
 160     {"CLM03",NULL,surf_workstation_resource_init_CLM03},
 161     {"KCCFLN05",NULL,surf_workstation_resource_init_KCCFLN05},
 162     {"compound",NULL,surf_workstation_resource_init_compound}
 163   };
 164
 165 void update_resource_description(s_surf_resource_description_t *table,
 166                                  int table_size,
 167                                  const char* name,
 168                                  surf_resource_t resource
 169                                  )
 170 {
 171   int i = find_resource_description(table, table_size, name);
 172   table[i].resource=resource;
 173 }
 174
 175 int find_resource_description(s_surf_resource_description_t *table,
 176                                int table_size,
 177                                const char* name)
 178 {
 179   int i;
 180   char *name_list=NULL;
 181
 182   for(i=0;i<table_size;i++)
 183     if(!strcmp(name,table[i].name)) {
 184       return i;
 185     }
 186   name_list=strdup(table[0].name);
 187   for(i=1;i<table_size;i++) {
 188     name_list = xbt_realloc(name_list,strlen(name_list)+strlen(table[i].name)+2);
 189     strcat(name_list,", ");
 190     strcat(name_list,table[i].name);
 191   }
 192   xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.",name,name_list);
 193 }
 194
 195 double generic_maxmin_share_resources(xbt_swag_t running_actions,
 196                                        size_t offset)
 197 {
 198   return  generic_maxmin_share_resources2(running_actions, offset,
 199                                           maxmin_system, lmm_solve);
 200 }
 201
 202 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
 203                                        size_t offset,
 204                                        lmm_system_t sys,
 205                                        void (*solve)(lmm_system_t))
 206 {
 207   surf_action_t action = NULL;
 208   double min = -1;
 209   double value = -1;
 210 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
 211
 212   xbt_assert0(solve,"Give me a real solver function!");
 213   solve(sys);
 214
 215   xbt_swag_foreach(action, running_actions) {
 216     value = lmm_variable_getvalue(VARIABLE(action));
 217     if ((value > 0) || (action->max_duration >= 0))
 218       break;
 219   }
 220
 221   if (!action)
 222     return -1.0;
 223
 224   if (value > 0) {
 225     min = action->remains / value;
 226     if ((action->max_duration >= 0) && (action->max_duration < min))
 227       min = action->max_duration;
 228   } else
 229     min = action->max_duration;
 230
 231   DEBUG5("Found an action (%p: duration = %f, remains = %f, value = %f) ! %f",action, action->max_duration, action->remains, value, min);
 232
 233   for (action = xbt_swag_getNext(action, running_actions->offset);
 234        action;
 235        action = xbt_swag_getNext(action, running_actions->offset)) {
 236     value = lmm_variable_getvalue(VARIABLE(action));
 237     if (value > 0) {
 238       value = action->remains / value;
 239       if (value < min) {
 240         min = value;
 241         DEBUG2("Updating min (value) with %p: %f",action, min);
 242       }
 243     }
 244     if ((action->max_duration >= 0) && (action->max_duration < min)) {
 245       min = action->max_duration;
 246       DEBUG2("Updating min (duration) with %p: %f",action, min);
 247     }
 248   }
 249   DEBUG1("min value : %f",min);
 250
 251 #undef VARIABLE
 252   return min;
 253 }
 254
 255 e_surf_action_state_t surf_action_get_state(surf_action_t action)
 256 {
 257   surf_action_state_t action_state =
 258       &(action->resource_type->common_public->states);
 259
 260   if (action->state_set == action_state->ready_action_set)
 261     return SURF_ACTION_READY;
 262   if (action->state_set == action_state->running_action_set)
 263     return SURF_ACTION_RUNNING;
 264   if (action->state_set == action_state->failed_action_set)
 265     return SURF_ACTION_FAILED;
 266   if (action->state_set == action_state->done_action_set)
 267     return SURF_ACTION_DONE;
 268   return SURF_ACTION_NOT_IN_THE_SYSTEM;
 269 }
 270
 271 double surf_action_get_start_time(surf_action_t action) {
 272   return action->start;
 273 }
 274
 275 double surf_action_get_finish_time(surf_action_t action) {
 276   return action->finish;
 277 }
 278
 279 void surf_action_free(surf_action_t * action)
 280 {
 281   (*action)->resource_type->common_public->action_cancel(*action);
 282   free(*action);
 283   *action = NULL;
 284 }
 285
 286 void surf_action_change_state(surf_action_t action,
 287                               e_surf_action_state_t state)
 288 {
 289   surf_action_state_t action_state =
 290       &(action->resource_type->common_public->states);
 291   XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
 292   xbt_swag_remove(action, action->state_set);
 293
 294   if (state == SURF_ACTION_READY)
 295     action->state_set = action_state->ready_action_set;
 296   else if (state == SURF_ACTION_RUNNING)
 297     action->state_set = action_state->running_action_set;
 298   else if (state == SURF_ACTION_FAILED)
 299     action->state_set = action_state->failed_action_set;
 300   else if (state == SURF_ACTION_DONE)
 301     action->state_set = action_state->done_action_set;
 302   else
 303     action->state_set = NULL;
 304
 305   if (action->state_set)
 306     xbt_swag_insert(action, action->state_set);
 307   XBT_OUT;
 308 }
 309
 310 void surf_action_set_data(surf_action_t action,
 311                           void *data)
 312 {
 313   action->data=data;
 314 }
 315
 316 void surf_init(int *argc, char **argv)
 317 {
 318   int i,j;
 319   char *opt;
 320
 321   const char* initial_path;
 322
 323   xbt_init(argc, argv);
 324   if (!surf_path) {
 325
 326     /* retrieves the current directory of the current process*/
 327     initial_path = __surf_get_initial_path();
 328
 329         xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
 330
 331     surf_path = xbt_dynar_new(sizeof(char*), NULL);
 332     xbt_dynar_push(surf_path,&initial_path);
 333
 334     for (i=1; i<*argc; i++) {
 335       if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
 336         opt=strchr(argv[i],'=');
 337         opt++;
 338         xbt_dynar_push(surf_path,&opt);
 339         /*remove this from argv*/
 340         for (j=i+1; j<*argc; j++) {
 341           argv[j-1] = argv[j];
 342         }
 343         argv[j-1] = NULL;
 344         (*argc)--;
 345         i--; /* compensate effect of next loop incrementation */
 346       }
 347     }
 348   }
 349   if (!resource_list)
 350     resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
 351   if (!history)
 352     history = tmgr_history_new();
 353   if (!maxmin_system)
 354     maxmin_system = lmm_system_new();
 355 }
 356
 357 static char* path_name = NULL;
 358 FILE *surf_fopen(const char *name, const char *mode)
 359 {
 360   int i;
 361   char* path = NULL;
 362   FILE *file = NULL;
 363   int path_name_len = 0; /* don't count '\0' */
 364
 365   xbt_assert0(name, "Need a non-NULL file name");
 366
 367   xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
 368
 369   if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
 370     return fopen(name,mode);
 371
 372   } else { /* search relative files in the path */
 373
 374     if(!path_name) {
 375        path_name_len = strlen(name);
 376        path_name=xbt_new0(char,path_name_len+1);
 377     }
 378
 379     xbt_dynar_foreach(surf_path,i,path) {
 380       if(path_name_len < strlen(path)+strlen(name)+1) {
 381          path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
 382          path_name=xbt_realloc(path_name,path_name_len+1);
 383       }
 384       sprintf(path_name,"%s/%s",path, name);
 385       file = fopen(path_name,mode);
 386       if (file) return file;
 387     }
 388   }
 389   return file;
 390 }
 391
 392 void surf_exit(void)
 393 {
 394   int i;
 395   surf_resource_t resource = NULL;
 396
 397   xbt_dynar_foreach(resource_list, i, resource) {
 398     resource->common_private->finalize();
 399   }
 400
 401   if (maxmin_system) {
 402     lmm_system_free(maxmin_system);
 403     maxmin_system = NULL;
 404   }
 405   if (history) {
 406     tmgr_history_free(history);
 407     history = NULL;
 408   }
 409   if (resource_list)
 410     xbt_dynar_free(&resource_list);
 411
 412   if(surf_path)
 413     xbt_dynar_free(&surf_path);
 414
 415   tmgr_finalize();
 416   surf_parse_lex_destroy();
 417   if(path_name) {
 418     free(path_name);
 419     path_name = NULL;
 420   }
 421   xbt_exit();
 422 }
 423
 424 double surf_solve(void)
 425 {
 426   static int first_run = 1;
 427
 428   double min = -1.0;
 429   double next_event_date = -1.0;
 430   double resource_next_action_end = -1.0;
 431   double value = -1.0;
 432   surf_resource_object_t resource_obj = NULL;
 433   surf_resource_t resource = NULL;
 434   tmgr_trace_event_t event = NULL;
 435   int i;
 436
 437   if (first_run) {
 438     DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
 439     while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
 440       if (next_event_date > NOW)
 441         break;
 442       while ((event =
 443               tmgr_history_get_next_event_leq(history, next_event_date,
 444                                               &value,
 445                                               (void **) &resource_obj))) {
 446         resource_obj->resource->common_private->
 447             update_resource_state(resource_obj, event, value);
 448       }
 449     }
 450     xbt_dynar_foreach(resource_list, i, resource) {
 451       resource->common_private->update_actions_state(NOW, 0.0);
 452     }
 453     first_run = 0;
 454     return 0.0;
 455   }
 456
 457   min = -1.0;
 458
 459   DEBUG0("Looking for next action end");
 460   xbt_dynar_foreach(resource_list, i, resource) {
 461     DEBUG1("Running for Resource [%s]",resource->common_public->name);
 462     resource_next_action_end =
 463         resource->common_private->share_resources(NOW);
 464     DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
 465            resource_next_action_end);
 466     if (((min < 0.0) || (resource_next_action_end < min))
 467         && (resource_next_action_end >= 0.0))
 468       min = resource_next_action_end;
 469   }
 470   DEBUG1("Next action end : %f", min);
 471
 472   if (min < 0.0)
 473     return -1.0;
 474
 475   DEBUG0("Looking for next event");
 476   while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
 477     DEBUG1("Next event : %f",next_event_date);
 478     if (next_event_date > NOW + min)
 479       break;
 480     DEBUG0("Updating resources");
 481     while ((event =
 482             tmgr_history_get_next_event_leq(history, next_event_date,
 483                                             &value,
 484                                             (void **) &resource_obj))) {
 485       if (resource_obj->resource->common_private->
 486           resource_used(resource_obj)) {
 487         min = next_event_date - NOW;
 488         DEBUG1("This event will modify resource state. Next event set to %f", min);
 489       }
 490       /* update state of resource_obj according to new value. Does not touch lmm.
 491          It will be modified if needed when updating actions */
 492       resource_obj->resource->common_private->
 493           update_resource_state(resource_obj, event, value);
 494     }
 495   }
 496
 497   DEBUG1("Duration set to %f", min);
 498
 499   NOW = NOW + min;
 500
 501   xbt_dynar_foreach(resource_list, i, resource) {
 502     resource->common_private->update_actions_state(NOW, min);
 503   }
 504
 505   return min;
 506 }
 507
 508 double surf_get_clock(void)
 509 {
 510   return NOW;
 511 }