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=4;
 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     {"ptask_L07",NULL,surf_workstation_resource_init_ptask_L07}
 164   };
 165
 166 void update_resource_description(s_surf_resource_description_t *table,
 167                                  int table_size,
 168                                  const char* name,
 169                                  surf_resource_t resource
 170                                  )
 171 {
 172   int i = find_resource_description(table, table_size, name);
 173   table[i].resource=resource;
 174 }
 175
 176 int find_resource_description(s_surf_resource_description_t *table,
 177                                int table_size,
 178                                const char* name)
 179 {
 180   int i;
 181   char *name_list=NULL;
 182
 183   for(i=0;i<table_size;i++)
 184     if(!strcmp(name,table[i].name)) {
 185       return i;
 186     }
 187   name_list=strdup(table[0].name);
 188   for(i=1;i<table_size;i++) {
 189     name_list = xbt_realloc(name_list,strlen(name_list)+strlen(table[i].name)+2);
 190     strcat(name_list,", ");
 191     strcat(name_list,table[i].name);
 192   }
 193   xbt_assert2(0, "Model '%s' is invalid! Valid models are: %s.",name,name_list);
 194 }
 195
 196 double generic_maxmin_share_resources(xbt_swag_t running_actions,
 197                                        size_t offset)
 198 {
 199   return  generic_maxmin_share_resources2(running_actions, offset,
 200                                           maxmin_system, lmm_solve);
 201 }
 202
 203 double generic_maxmin_share_resources2(xbt_swag_t running_actions,
 204                                        size_t offset,
 205                                        lmm_system_t sys,
 206                                        void (*solve)(lmm_system_t))
 207 {
 208   surf_action_t action = NULL;
 209   double min = -1;
 210   double value = -1;
 211 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
 212
 213   xbt_assert0(solve,"Give me a real solver function!");
 214   solve(sys);
 215
 216   xbt_swag_foreach(action, running_actions) {
 217     value = lmm_variable_getvalue(VARIABLE(action));
 218     if ((value > 0) || (action->max_duration >= 0))
 219       break;
 220   }
 221
 222   if (!action)
 223     return -1.0;
 224
 225   if (value > 0) {
 226     min = action->remains / value;
 227     if ((action->max_duration >= 0) && (action->max_duration < min))
 228       min = action->max_duration;
 229   } else
 230     min = action->max_duration;
 231
 232   DEBUG5("Found action (%p: duration = %f, remains = %f, value = %f) ! %f",action, action->max_duration, action->remains, value, min);
 233
 234   for (action = xbt_swag_getNext(action, running_actions->offset);
 235        action;
 236        action = xbt_swag_getNext(action, running_actions->offset)) {
 237     value = lmm_variable_getvalue(VARIABLE(action));
 238     if (value > 0) {
 239       value = action->remains / value;
 240       if (value < min) {
 241         min = value;
 242         DEBUG2("Updating min (value) with %p: %f",action, min);
 243       }
 244     }
 245     if ((action->max_duration >= 0) && (action->max_duration < min)) {
 246       min = action->max_duration;
 247       DEBUG2("Updating min (duration) with %p: %f",action, min);
 248     }
 249   }
 250   DEBUG1("min value : %f",min);
 251
 252 #undef VARIABLE
 253   return min;
 254 }
 255
 256 e_surf_action_state_t surf_action_get_state(surf_action_t action)
 257 {
 258   surf_action_state_t action_state =
 259       &(action->resource_type->common_public->states);
 260
 261   if (action->state_set == action_state->ready_action_set)
 262     return SURF_ACTION_READY;
 263   if (action->state_set == action_state->running_action_set)
 264     return SURF_ACTION_RUNNING;
 265   if (action->state_set == action_state->failed_action_set)
 266     return SURF_ACTION_FAILED;
 267   if (action->state_set == action_state->done_action_set)
 268     return SURF_ACTION_DONE;
 269   return SURF_ACTION_NOT_IN_THE_SYSTEM;
 270 }
 271
 272 double surf_action_get_start_time(surf_action_t action) {
 273   return action->start;
 274 }
 275
 276 double surf_action_get_finish_time(surf_action_t action) {
 277   return action->finish;
 278 }
 279
 280 void surf_action_free(surf_action_t * action)
 281 {
 282   (*action)->resource_type->common_public->action_cancel(*action);
 283   free(*action);
 284   *action = NULL;
 285 }
 286
 287 void surf_action_change_state(surf_action_t action,
 288                               e_surf_action_state_t state)
 289 {
 290   surf_action_state_t action_state =
 291       &(action->resource_type->common_public->states);
 292   XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
 293   xbt_swag_remove(action, action->state_set);
 294
 295   if (state == SURF_ACTION_READY)
 296     action->state_set = action_state->ready_action_set;
 297   else if (state == SURF_ACTION_RUNNING)
 298     action->state_set = action_state->running_action_set;
 299   else if (state == SURF_ACTION_FAILED)
 300     action->state_set = action_state->failed_action_set;
 301   else if (state == SURF_ACTION_DONE)
 302     action->state_set = action_state->done_action_set;
 303   else
 304     action->state_set = NULL;
 305
 306   if (action->state_set)
 307     xbt_swag_insert(action, action->state_set);
 308   XBT_OUT;
 309 }
 310
 311 void surf_action_set_data(surf_action_t action,
 312                           void *data)
 313 {
 314   action->data=data;
 315 }
 316
 317 void surf_init(int *argc, char **argv)
 318 {
 319   int i,j;
 320   char *opt;
 321
 322   const char* initial_path;
 323
 324   xbt_init(argc, argv);
 325   if (!surf_path) {
 326
 327     /* retrieves the current directory of the current process*/
 328     initial_path = __surf_get_initial_path();
 329
 330         xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
 331
 332     surf_path = xbt_dynar_new(sizeof(char*), NULL);
 333     xbt_dynar_push(surf_path,&initial_path);
 334
 335     for (i=1; i<*argc; i++) {
 336       if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
 337         opt=strchr(argv[i],'=');
 338         opt++;
 339         xbt_dynar_push(surf_path,&opt);
 340         /*remove this from argv*/
 341         for (j=i+1; j<*argc; j++) {
 342           argv[j-1] = argv[j];
 343         }
 344         argv[j-1] = NULL;
 345         (*argc)--;
 346         i--; /* compensate effect of next loop incrementation */
 347       }
 348     }
 349   }
 350   if (!resource_list)
 351     resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
 352   if (!history)
 353     history = tmgr_history_new();
 354   if (!maxmin_system)
 355     maxmin_system = lmm_system_new();
 356 }
 357
 358 static char* path_name = NULL;
 359 FILE *surf_fopen(const char *name, const char *mode)
 360 {
 361   int i;
 362   char* path = NULL;
 363   FILE *file = NULL;
 364   int path_name_len = 0; /* don't count '\0' */
 365
 366   xbt_assert0(name, "Need a non-NULL file name");
 367
 368   xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
 369
 370   if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
 371     return fopen(name,mode);
 372
 373   } else { /* search relative files in the path */
 374
 375     if(!path_name) {
 376        path_name_len = strlen(name);
 377        path_name=xbt_new0(char,path_name_len+1);
 378     }
 379
 380     xbt_dynar_foreach(surf_path,i,path) {
 381       if(path_name_len < strlen(path)+strlen(name)+1) {
 382          path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
 383          path_name=xbt_realloc(path_name,path_name_len+1);
 384       }
 385       sprintf(path_name,"%s/%s",path, name);
 386       file = fopen(path_name,mode);
 387       if (file) return file;
 388     }
 389   }
 390   return file;
 391 }
 392
 393 void surf_exit(void)
 394 {
 395   int i;
 396   surf_resource_t resource = NULL;
 397
 398   xbt_dynar_foreach(resource_list, i, resource) {
 399     resource->common_private->finalize();
 400   }
 401
 402   if (maxmin_system) {
 403     lmm_system_free(maxmin_system);
 404     maxmin_system = NULL;
 405   }
 406   if (history) {
 407     tmgr_history_free(history);
 408     history = NULL;
 409   }
 410   if (resource_list)
 411     xbt_dynar_free(&resource_list);
 412
 413   if(surf_path)
 414     xbt_dynar_free(&surf_path);
 415
 416   tmgr_finalize();
 417   surf_parse_lex_destroy();
 418   if(path_name) {
 419     free(path_name);
 420     path_name = NULL;
 421   }
 422   xbt_exit();
 423 }
 424
 425 double surf_solve(void)
 426 {
 427   static int first_run = 1;
 428
 429   double min = -1.0;
 430   double next_event_date = -1.0;
 431   double resource_next_action_end = -1.0;
 432   double value = -1.0;
 433   surf_resource_object_t resource_obj = NULL;
 434   surf_resource_t resource = NULL;
 435   tmgr_trace_event_t event = NULL;
 436   int i;
 437
 438   if (first_run) {
 439     DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
 440     while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
 441       if (next_event_date > NOW)
 442         break;
 443       while ((event =
 444               tmgr_history_get_next_event_leq(history, next_event_date,
 445                                               &value,
 446                                               (void **) &resource_obj))) {
 447         resource_obj->resource->common_private->
 448             update_resource_state(resource_obj, event, value);
 449       }
 450     }
 451     xbt_dynar_foreach(resource_list, i, resource) {
 452       resource->common_private->update_actions_state(NOW, 0.0);
 453     }
 454     first_run = 0;
 455     return 0.0;
 456   }
 457
 458   min = -1.0;
 459
 460   DEBUG0("Looking for next action end");
 461   xbt_dynar_foreach(resource_list, i, resource) {
 462     DEBUG1("Running for Resource [%s]",resource->common_public->name);
 463     resource_next_action_end =
 464         resource->common_private->share_resources(NOW);
 465     DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
 466            resource_next_action_end);
 467     if (((min < 0.0) || (resource_next_action_end < min))
 468         && (resource_next_action_end >= 0.0))
 469       min = resource_next_action_end;
 470   }
 471   DEBUG1("Next action end : %f", min);
 472
 473   if (min < 0.0)
 474     return -1.0;
 475
 476   DEBUG0("Looking for next event");
 477   while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
 478     DEBUG1("Next event : %f",next_event_date);
 479     if (next_event_date > NOW + min)
 480       break;
 481     DEBUG0("Updating resources");
 482     while ((event =
 483             tmgr_history_get_next_event_leq(history, next_event_date,
 484                                             &value,
 485                                             (void **) &resource_obj))) {
 486       if (resource_obj->resource->common_private->
 487           resource_used(resource_obj)) {
 488         min = next_event_date - NOW;
 489         DEBUG1("This event will modify resource state. Next event set to %f", min);
 490       }
 491       /* update state of resource_obj according to new value. Does not touch lmm.
 492          It will be modified if needed when updating actions */
 493       resource_obj->resource->common_private->
 494           update_resource_state(resource_obj, event, value);
 495     }
 496   }
 497
 498   DEBUG1("Duration set to %f", min);
 499
 500   NOW = NOW + min;
 501
 502   xbt_dynar_foreach(resource_list, i, resource) {
 503     resource->common_private->update_actions_state(NOW, min);
 504   }
 505
 506   return min;
 507 }
 508
 509 double surf_get_clock(void)
 510 {
 511   return NOW;
 512 }