src/surf/network_constant.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 "surf_private.h"
   9 #include "network_common.h"
  10 #include "surf/random_mgr.h"
  11 #include "xbt/dict.h"
  12 #include "xbt/str.h"
  13 #include "xbt/log.h"
  14
  15 typedef struct network_card_Constant {
  16   char *name;
  17   int id;
  18 } s_network_card_Constant_t, *network_card_Constant_t;
  19
  20 typedef struct surf_action_network_Constant {
  21   s_surf_action_t generic_action;
  22   double latency;
  23   double lat_init;
  24   int suspended;
  25   network_card_Constant_t src;
  26   network_card_Constant_t dst;
  27 } s_surf_action_network_Constant_t, *surf_action_network_Constant_t;
  28
  29 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
  30 static random_data_t random_latency = NULL;
  31 static int card_number = 0;
  32 static int host_number = 0;
  33
  34 static void network_card_free(void *nw_card)
  35 {
  36   free(((network_card_Constant_t) nw_card)->name);
  37   free(nw_card);
  38 }
  39
  40 static int network_card_new(const char *card_name)
  41 {
  42   network_card_Constant_t card =
  43       xbt_dict_get_or_null(network_card_set, card_name);
  44
  45   if (!card) {
  46     card = xbt_new0(s_network_card_Constant_t, 1);
  47     card->name = xbt_strdup(card_name);
  48     card->id = card_number++;
  49     xbt_dict_set(network_card_set, card_name, card, network_card_free);
  50   }
  51   return card->id;
  52 }
  53
  54 static int src_id = -1;
  55 static int dst_id = -1;
  56
  57 static void parse_route_set_endpoints(void)
  58 {
  59   src_id = network_card_new(A_surfxml_route_src);
  60   dst_id = network_card_new(A_surfxml_route_dst);
  61   route_action = A_surfxml_route_action;
  62 }
  63
  64 static void parse_route_set_route(void)
  65 {
  66   char *name;
  67   if (src_id != -1 && dst_id != -1) {
  68     name = bprintf("%x#%x",src_id, dst_id);
  69     manage_route(route_table, name, route_action, 0);
  70     free(name);
  71   }
  72 }
  73
  74 static void count_hosts(void)
  75 {
  76    host_number++;
  77 }
  78
  79 static void define_callbacks(const char *file)
  80 {
  81   /* Figuring out the network links */
  82   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
  83   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
  84   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
  85 }
  86
  87 static void *name_service(const char *name)
  88 {
  89   network_card_Constant_t card = xbt_dict_get_or_null(network_card_set, name);
  90   return card;
  91 }
  92
  93 static const char *get_resource_name(void *resource_id)
  94 {
  95   return ((network_card_Constant_t) resource_id)->name;
  96 }
  97
  98 static int resource_used(void *resource_id)
  99 {
 100   return 0;
 101 }
 102
 103 static int action_free(surf_action_t action)
 104 {
 105   action->using--;
 106   if (!action->using) {
 107     xbt_swag_remove(action, action->state_set);
 108     free(action);
 109     return 1;
 110   }
 111   return 0;
 112 }
 113
 114 static void action_use(surf_action_t action)
 115 {
 116   action->using++;
 117 }
 118
 119 static void action_cancel(surf_action_t action)
 120 {
 121   return;
 122 }
 123
 124 static void action_recycle(surf_action_t action)
 125 {
 126   return;
 127 }
 128
 129 static void action_change_state(surf_action_t action,
 130                                 e_surf_action_state_t state)
 131 {
 132   surf_action_change_state(action, state);
 133   return;
 134 }
 135
 136 static double share_resources(double now)
 137 {
 138   surf_action_network_Constant_t action = NULL;
 139   xbt_swag_t running_actions =
 140       surf_network_model->common_public->states.running_action_set;
 141   double min = -1.0;
 142
 143   xbt_swag_foreach(action, running_actions) {
 144     if (action->latency > 0) {
 145       if (min < 0)
 146         min = action->latency;
 147       else if (action->latency < min)
 148         min = action->latency;
 149     }
 150   }
 151
 152   return min;
 153 }
 154
 155 static void update_actions_state(double now, double delta)
 156 {
 157   surf_action_network_Constant_t action = NULL;
 158   surf_action_network_Constant_t next_action = NULL;
 159   xbt_swag_t running_actions =
 160       surf_network_model->common_public->states.running_action_set;
 161
 162   xbt_swag_foreach_safe(action, next_action, running_actions) {
 163     if (action->latency > 0) {
 164       if (action->latency > delta) {
 165         double_update(&(action->latency), delta);
 166       } else {
 167         action->latency = 0.0;
 168       }
 169     }
 170     double_update(&(action->generic_action.remains),
 171                   action->generic_action.cost * delta/action->lat_init);
 172     if (action->generic_action.max_duration != NO_MAX_DURATION)
 173       double_update(&(action->generic_action.max_duration), delta);
 174
 175     if (action->generic_action.remains <= 0) {
 176       action->generic_action.finish = surf_get_clock();
 177       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 178     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 179                (action->generic_action.max_duration <= 0)) {
 180       action->generic_action.finish = surf_get_clock();
 181       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 182     }
 183   }
 184
 185   return;
 186 }
 187
 188 static void update_resource_state(void *id,
 189                                   tmgr_trace_event_t event_type,
 190                                   double value, double time)
 191 {
 192   DIE_IMPOSSIBLE;
 193 }
 194
 195 static surf_action_t communicate(void *src, void *dst, double size,
 196                                  double rate)
 197 {
 198   surf_action_network_Constant_t action = NULL;
 199   network_card_Constant_t card_src = src;
 200   network_card_Constant_t card_dst = dst;
 201
 202   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 203
 204   action = xbt_new0(s_surf_action_network_Constant_t, 1);
 205
 206   action->generic_action.using = 1;
 207   action->generic_action.cost = size;
 208   action->generic_action.remains = size;
 209   action->generic_action.max_duration = NO_MAX_DURATION;
 210   action->generic_action.start = surf_get_clock();
 211   action->generic_action.finish = -1.0;
 212   action->generic_action.model_type =
 213       (surf_model_t) surf_network_model;
 214   action->suspended = 0;
 215
 216   action->latency = random_generate(random_latency);
 217   action->lat_init = action->latency;
 218
 219   if(action->latency<=0.0)
 220     action->generic_action.state_set =
 221       surf_network_model->common_public->states.done_action_set;
 222   else
 223     action->generic_action.state_set =
 224       surf_network_model->common_public->states.running_action_set;
 225
 226   xbt_swag_insert(action, action->generic_action.state_set);
 227
 228
 229   XBT_OUT;
 230
 231   return (surf_action_t) action;
 232 }
 233
 234 /* returns an array of link_Constant_t */
 235 static const void **get_route(void *src, void *dst)
 236 {
 237   xbt_assert0(0, "Calling this function does not make any sense");
 238   return (const void **) NULL;
 239 }
 240
 241 static int get_route_size(void *src, void *dst)
 242 {
 243   xbt_assert0(0, "Calling this function does not make any sense");
 244   return 0;
 245 }
 246
 247 static const char *get_link_name(const void *link)
 248 {
 249   DIE_IMPOSSIBLE;
 250 }
 251
 252 static double get_link_bandwidth(const void *link)
 253 {
 254   DIE_IMPOSSIBLE;
 255 }
 256
 257 static double get_link_latency(const void *link)
 258 {
 259   DIE_IMPOSSIBLE;
 260 }
 261
 262 static int link_shared(const void *link)
 263 {
 264   DIE_IMPOSSIBLE;
 265 }
 266
 267 static xbt_dict_t get_properties(void *link)
 268 {
 269   DIE_IMPOSSIBLE;
 270 }
 271
 272 static void action_suspend(surf_action_t action)
 273 {
 274   ((surf_action_network_Constant_t) action)->suspended = 1;
 275 }
 276
 277 static void action_resume(surf_action_t action)
 278 {
 279   if (((surf_action_network_Constant_t) action)->suspended)
 280     ((surf_action_network_Constant_t) action)->suspended = 0;
 281 }
 282
 283 static int action_is_suspended(surf_action_t action)
 284 {
 285   return ((surf_action_network_Constant_t) action)->suspended;
 286 }
 287
 288 static void action_set_max_duration(surf_action_t action, double duration)
 289 {
 290   action->max_duration = duration;
 291 }
 292
 293 static void finalize(void)
 294 {
 295   xbt_dict_free(&network_card_set);
 296   xbt_swag_free(surf_network_model->common_public->states.
 297                 ready_action_set);
 298   xbt_swag_free(surf_network_model->common_public->states.
 299                 running_action_set);
 300   xbt_swag_free(surf_network_model->common_public->states.
 301                 failed_action_set);
 302   xbt_swag_free(surf_network_model->common_public->states.
 303                 done_action_set);
 304   free(surf_network_model->common_public);
 305   free(surf_network_model->common_private);
 306   free(surf_network_model->extension_public);
 307
 308   free(surf_network_model);
 309   surf_network_model = NULL;
 310
 311   card_number = 0;
 312 }
 313
 314 static void surf_network_model_init_internal(void)
 315 {
 316   s_surf_action_t action;
 317
 318   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 319
 320   surf_network_model->common_private =
 321       xbt_new0(s_surf_model_private_t, 1);
 322   surf_network_model->common_public =
 323       xbt_new0(s_surf_model_public_t, 1);
 324   surf_network_model->extension_public =
 325       xbt_new0(s_surf_network_model_extension_public_t, 1);
 326
 327   surf_network_model->common_public->states.ready_action_set =
 328       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 329   surf_network_model->common_public->states.running_action_set =
 330       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 331   surf_network_model->common_public->states.failed_action_set =
 332       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 333   surf_network_model->common_public->states.done_action_set =
 334       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 335
 336   surf_network_model->common_public->name_service = name_service;
 337   surf_network_model->common_public->get_resource_name =
 338       get_resource_name;
 339   surf_network_model->common_public->action_get_state =
 340       surf_action_get_state;
 341   surf_network_model->common_public->action_get_start_time =
 342       surf_action_get_start_time;
 343   surf_network_model->common_public->action_get_finish_time =
 344       surf_action_get_finish_time;
 345   surf_network_model->common_public->action_free = action_free;
 346   surf_network_model->common_public->action_use = action_use;
 347   surf_network_model->common_public->action_cancel = action_cancel;
 348   surf_network_model->common_public->action_recycle = action_recycle;
 349   surf_network_model->common_public->action_change_state =
 350       action_change_state;
 351   surf_network_model->common_public->action_set_data =
 352       surf_action_set_data;
 353   surf_network_model->common_public->name = "network";
 354
 355   surf_network_model->common_private->resource_used = resource_used;
 356   surf_network_model->common_private->share_resources = share_resources;
 357   surf_network_model->common_private->update_actions_state =
 358       update_actions_state;
 359   surf_network_model->common_private->update_resource_state =
 360       update_resource_state;
 361   surf_network_model->common_private->finalize = finalize;
 362
 363   surf_network_model->common_public->suspend = action_suspend;
 364   surf_network_model->common_public->resume = action_resume;
 365   surf_network_model->common_public->is_suspended = action_is_suspended;
 366   surf_cpu_model->common_public->set_max_duration =
 367       action_set_max_duration;
 368
 369   surf_network_model->extension_public->communicate = communicate;
 370   surf_network_model->extension_public->get_route = get_route;
 371   surf_network_model->extension_public->get_route_size = get_route_size;
 372   surf_network_model->extension_public->get_link_name = get_link_name;
 373   surf_network_model->extension_public->get_link_bandwidth =
 374       get_link_bandwidth;
 375   surf_network_model->extension_public->get_link_latency =
 376       get_link_latency;
 377   surf_network_model->extension_public->link_shared =
 378       link_shared;
 379
 380   surf_network_model->common_public->get_properties =  get_properties;
 381
 382   network_card_set = xbt_dict_new();
 383
 384   if(!random_latency)
 385     random_latency = random_new(RAND, 100, 0.0, 1.0, .125, .034);
 386 }
 387
 388 void surf_network_model_init_Constant(const char *filename)
 389 {
 390
 391   if (surf_network_model)
 392     return;
 393   surf_network_model_init_internal();
 394   define_callbacks(filename);
 395   xbt_dynar_push(model_list, &surf_network_model);
 396
 397   update_model_description(surf_network_model_description,
 398                            "Constant",
 399                            (surf_model_t) surf_network_model);
 400 }