src/surf/storage.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012. 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 #include "xbt/ex.h"
   8 #include "xbt/dict.h"
   9 #include "portable.h"
  10 #include "surf_private.h"
  11 #include "storage_private.h"
  12 #include "surf/surf_resource.h"
  13
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_storage, surf,
  15                                 "Logging specific to the SURF storage module");
  16
  17 surf_model_t surf_storage_model = NULL;
  18 lmm_system_t storage_maxmin_system = NULL;
  19 static int storage_selective_update = 0;
  20 static xbt_swag_t
  21     storage_running_action_set_that_does_not_need_being_checked = NULL;
  22
  23 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
  24 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
  25
  26 typedef struct surf_storage {
  27   s_surf_resource_t generic_resource;
  28   const char* type;
  29   const char* content; /*should be a dict */
  30 } s_surf_storage_t, *surf_storage_t;
  31
  32 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state);
  33 static surf_action_t storage_action_sleep (void *storage, double duration);
  34 static surf_action_t storage_action_execute (void *storage, double size);
  35
  36 static surf_action_t storage_action_open(void *storage, const char* path, const char* mode)
  37 {
  38   char *storage_type_id = xbt_lib_get_or_null(
  39       storage_lib,
  40       ((storage_t)storage)->generic_resource.name,
  41       ROUTING_STORAGE_LEVEL);
  42   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, storage_type_id,ROUTING_STORAGE_TYPE_LEVEL);
  43   xbt_dict_t content_dict = storage_type->content;
  44   content_t content = xbt_dict_get(content_dict,path);
  45
  46   double size = content->size;
  47   XBT_DEBUG("Disk '%s' with type_d '%s'",((storage_t)storage)->generic_resource.name,storage_type_id);
  48   XBT_INFO("\tFile '%s' size '%f'",path,size);
  49
  50   surf_action_t action = storage_action_execute(storage,size);
  51   return action;
  52 }
  53
  54 static surf_action_t storage_action_close(void *storage, surf_file_t fp)
  55 {
  56   return storage_action_sleep(storage,2.0);
  57 }
  58
  59 static surf_action_t storage_action_read(void *storage, void* ptr, size_t size, size_t nmemb, surf_file_t stream)
  60 {
  61   return storage_action_sleep(storage,3.0);
  62 }
  63
  64 static surf_action_t storage_action_write(void *storage, const void* ptr, size_t size, size_t nmemb, surf_file_t stream)
  65 {
  66   return storage_action_sleep(storage,4.0);
  67 }
  68
  69 static surf_action_t storage_action_stat(void *storage, int fd, void* buf)
  70 {
  71   return storage_action_sleep(storage,5.0);
  72 }
  73
  74 static surf_action_t storage_action_execute (void *storage, double size)
  75 {
  76   surf_action_storage_t action = NULL;
  77   storage_t STORAGE = storage;
  78
  79   XBT_IN("(%s,%g)", surf_resource_name(STORAGE), size);
  80   action =
  81       surf_action_new(sizeof(s_surf_action_storage_t), size, surf_storage_model,
  82           STORAGE->state_current != SURF_RESOURCE_ON);
  83
  84   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
  85                                                    calloc but it seems to help valgrind... */
  86
  87   GENERIC_LMM_ACTION(action).variable =
  88       lmm_variable_new(storage_maxmin_system, action, 1.0, -1.0 , 1);
  89
  90   lmm_expand(storage_maxmin_system, STORAGE->constraint,
  91              GENERIC_LMM_ACTION(action).variable, 1.0);
  92   XBT_OUT();
  93   return (surf_action_t) action;
  94 }
  95
  96 static surf_action_t storage_action_sleep (void *storage, double duration)
  97 {
  98   surf_action_storage_t action = NULL;
  99
 100   if (duration > 0)
 101     duration = MAX(duration, MAXMIN_PRECISION);
 102
 103   XBT_IN("(%s,%g)", surf_resource_name(storage), duration);
 104   action = (surf_action_storage_t) storage_action_execute(storage, 1.0);
 105   GENERIC_ACTION(action).max_duration = duration;
 106   GENERIC_LMM_ACTION(action).suspended = 2;
 107   if (duration == NO_MAX_DURATION) {
 108     /* Move to the *end* of the corresponding action set. This convention
 109        is used to speed up update_resource_state  */
 110     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 111     ((surf_action_t) action)->state_set =
 112         storage_running_action_set_that_does_not_need_being_checked;
 113     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 114   }
 115
 116   lmm_update_variable_weight(storage_maxmin_system,
 117                              GENERIC_LMM_ACTION(action).variable, 0.0);
 118
 119   XBT_OUT();
 120   return (surf_action_t) action;
 121 }
 122
 123 static void* storage_create_resource(const char* id, const char* model,const char* type_id)
 124 {
 125   storage_t storage = NULL;
 126
 127   xbt_assert(!surf_storage_resource_by_name(id),
 128               "Storage '%s' declared several times in the platform file",
 129               id);
 130   storage = (storage_t) surf_resource_new(sizeof(s_storage_t),
 131           surf_storage_model, id,NULL);
 132
 133   storage->state_current = SURF_RESOURCE_ON;
 134
 135   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
 136   double Bread = atof(xbt_dict_get(storage_type->properties,"Bread"));
 137
 138   storage->constraint =
 139       lmm_constraint_new(storage_maxmin_system, storage,
 140           Bread);
 141
 142   xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
 143
 144   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' \n\t\tmodel '%s' \n\t\tproperties '%p'\n\t\tBread '%f'\n",
 145       id,
 146       model,
 147       type_id,
 148       storage_type->properties,
 149       Bread);
 150
 151   return storage;
 152 }
 153
 154 static void storage_finalize(void)
 155 {
 156   lmm_system_free(storage_maxmin_system);
 157   storage_maxmin_system = NULL;
 158
 159   surf_model_exit(surf_storage_model);
 160   surf_storage_model = NULL;
 161
 162   xbt_swag_free
 163       (storage_running_action_set_that_does_not_need_being_checked);
 164   storage_running_action_set_that_does_not_need_being_checked = NULL;
 165 }
 166
 167 static void storage_update_actions_state(double now, double delta)
 168 {
 169   surf_action_storage_t action = NULL;
 170   surf_action_storage_t next_action = NULL;
 171   xbt_swag_t running_actions = surf_storage_model->states.running_action_set;
 172   xbt_swag_foreach_safe(action, next_action, running_actions) {
 173
 174     double_update(&(GENERIC_ACTION(action).remains),
 175                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
 176     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
 177       double_update(&(GENERIC_ACTION(action).max_duration), delta);
 178     if ((GENERIC_ACTION(action).remains <= 0) &&
 179         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
 180       GENERIC_ACTION(action).finish = surf_get_clock();
 181       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 182     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
 183                (GENERIC_ACTION(action).max_duration <= 0)) {
 184       GENERIC_ACTION(action).finish = surf_get_clock();
 185       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 186     }
 187   }
 188
 189   return;
 190 }
 191
 192 static double storage_share_resources(double NOW)
 193 {
 194   XBT_DEBUG("storage_share_resources %f",NOW);
 195   s_surf_action_storage_t action;
 196   return generic_maxmin_share_resources(surf_storage_model->states.running_action_set,
 197       xbt_swag_offset(action, generic_lmm_action.variable),
 198       storage_maxmin_system, lmm_solve);
 199 }
 200
 201 static int storage_resource_used(void *resource_id)
 202 {
 203   THROW_UNIMPLEMENTED;
 204   return 0;
 205 }
 206
 207 static void storage_resources_state(void *id, tmgr_trace_event_t event_type,
 208                                  double value, double time)
 209 {
 210   THROW_UNIMPLEMENTED;
 211 }
 212
 213 static int storage_action_unref(surf_action_t action)
 214 {
 215   action->refcount--;
 216   if (!action->refcount) {
 217     xbt_swag_remove(action, action->state_set);
 218     if (((surf_action_lmm_t) action)->variable)
 219       lmm_variable_free(storage_maxmin_system,
 220                         ((surf_action_lmm_t) action)->variable);
 221 #ifdef HAVE_TRACING
 222     xbt_free(action->category);
 223 #endif
 224     surf_action_free(&action);
 225     return 1;
 226   }
 227   return 0;
 228 }
 229
 230 static void storage_action_cancel(surf_action_t action)
 231 {
 232   surf_action_state_set(action, SURF_ACTION_FAILED);
 233   return;
 234 }
 235
 236 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state)
 237 {
 238   surf_action_state_set(action, state);
 239   return;
 240 }
 241
 242 static void storage_action_suspend(surf_action_t action)
 243 {
 244   XBT_IN("(%p)", action);
 245   if (((surf_action_lmm_t) action)->suspended != 2) {
 246     lmm_update_variable_weight(storage_maxmin_system,
 247                                ((surf_action_lmm_t) action)->variable,
 248                                0.0);
 249     ((surf_action_lmm_t) action)->suspended = 1;
 250   }
 251   XBT_OUT();
 252 }
 253
 254 static void storage_action_resume(surf_action_t action)
 255 {
 256   THROW_UNIMPLEMENTED;
 257 }
 258
 259 static int storage_action_is_suspended(surf_action_t action)
 260 {
 261   return (((surf_action_lmm_t) action)->suspended == 1);
 262 }
 263
 264 static void storage_action_set_max_duration(surf_action_t action, double duration)
 265 {
 266   THROW_UNIMPLEMENTED;
 267 }
 268
 269 static void storage_action_set_priority(surf_action_t action, double priority)
 270 {
 271   THROW_UNIMPLEMENTED;
 272 }
 273
 274 static void parse_storage_init(sg_platf_storage_cbarg_t storage)
 275 {
 276   void* stype = xbt_lib_get_or_null(storage_type_lib,
 277                                     storage->type_id,
 278                                     ROUTING_STORAGE_TYPE_LEVEL);
 279   if(!stype) xbt_die("No storage type '%s'",storage->type_id);
 280 //  XBT_INFO("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' \n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tproperties '%p'\n",
 281 //      storage->id,
 282 //      ((storage_type_t) stype)->model,
 283 //      ((storage_type_t) stype)->type_id,
 284 //      ((storage_type_t) stype)->content,
 285 //      ((storage_type_t) stype)->properties);
 286
 287  storage_create_resource(storage->id,
 288      ((storage_type_t) stype)->model,
 289      ((storage_type_t) stype)->type_id);
 290 }
 291
 292 static void parse_mstorage_init(sg_platf_mstorage_cbarg_t mstorage)
 293 {
 294   XBT_DEBUG("parse_mstorage_init");
 295 }
 296
 297 static void parse_storage_type_init(sg_platf_storage_type_cbarg_t storagetype_)
 298 {
 299   XBT_DEBUG("parse_storage_type_init");
 300 }
 301
 302 static void parse_mount_init(sg_platf_mount_cbarg_t mount)
 303 {
 304   XBT_DEBUG("parse_mount_init");
 305 }
 306
 307 static void storage_define_callbacks()
 308 {
 309   sg_platf_storage_add_cb(parse_storage_init);
 310   sg_platf_storage_type_add_cb(parse_storage_type_init);
 311   sg_platf_mstorage_add_cb(parse_mstorage_init);
 312   sg_platf_mount_add_cb(parse_mount_init);
 313 }
 314
 315 static void surf_storage_model_init_internal(void)
 316 {
 317   s_surf_action_t action;
 318
 319   XBT_DEBUG("surf_storage_model_init_internal");
 320   surf_storage_model = surf_model_init();
 321
 322   storage_running_action_set_that_does_not_need_being_checked =
 323       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 324
 325   surf_storage_model->name = "Storage";
 326   surf_storage_model->action_unref = storage_action_unref;
 327   surf_storage_model->action_cancel = storage_action_cancel;
 328   surf_storage_model->action_state_set = storage_action_state_set;
 329
 330   surf_storage_model->model_private->finalize = storage_finalize;
 331   surf_storage_model->model_private->update_actions_state = storage_update_actions_state;
 332   surf_storage_model->model_private->share_resources = storage_share_resources;
 333   surf_storage_model->model_private->resource_used = storage_resource_used;
 334   surf_storage_model->model_private->update_resource_state = storage_resources_state;
 335
 336   surf_storage_model->suspend = storage_action_suspend;
 337   surf_storage_model->resume = storage_action_resume;
 338   surf_storage_model->is_suspended = storage_action_is_suspended;
 339   surf_storage_model->set_max_duration = storage_action_set_max_duration;
 340   surf_storage_model->set_priority = storage_action_set_priority;
 341
 342   surf_storage_model->extension.storage.open = storage_action_open;
 343   surf_storage_model->extension.storage.close = storage_action_close;
 344   surf_storage_model->extension.storage.read = storage_action_read;
 345   surf_storage_model->extension.storage.write = storage_action_write;
 346   surf_storage_model->extension.storage.stat = storage_action_stat;
 347   surf_storage_model->extension.storage.create_resource = storage_create_resource;
 348
 349   if (!storage_maxmin_system) {
 350     storage_maxmin_system = lmm_system_new(storage_selective_update);
 351   }
 352
 353 }
 354
 355 void surf_storage_model_init_default(void)
 356 {
 357   surf_storage_model_init_internal();
 358   storage_define_callbacks();
 359
 360   xbt_dynar_push(model_list, &surf_storage_model);
 361 }