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   route_link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
  63 }
  64
  65 static void parse_route_set_route(void)
  66 {
  67   char *name;
  68   if (src_id != -1 && dst_id != -1) {
  69     name = bprintf("%x#%x",src_id, dst_id);
  70     manage_route(route_table, name, route_action, 0);
  71     free(name);
  72   }
  73 }
  74
  75 static void count_hosts(void)
  76 {
  77    host_number++;
  78 }
  79
  80 static void define_callbacks(const char *file)
  81 {
  82   /* Figuring out the network links */
  83   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
  84   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties);
  85   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
  86   surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, &parse_route_elem);
  87   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
  88   surfxml_add_callback(STag_surfxml_platform_cb_list, &init_data);
  89   surfxml_add_callback(STag_surfxml_set_cb_list, &parse_sets);
  90   surfxml_add_callback(STag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_endpoints);
  91   surfxml_add_callback(ETag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_route);
  92   surfxml_add_callback(STag_surfxml_foreach_cb_list, &parse_foreach);
  93   surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_cluster);
  94   surfxml_add_callback(STag_surfxml_trace_cb_list, &parse_trace_init);
  95   surfxml_add_callback(ETag_surfxml_trace_cb_list, &parse_trace_finalize);
  96   surfxml_add_callback(STag_surfxml_trace_c_connect_cb_list, &parse_trace_c_connect);
  97 }
  98
  99 static void *name_service(const char *name)
 100 {
 101   network_card_Constant_t card = xbt_dict_get_or_null(network_card_set, name);
 102   return card;
 103 }
 104
 105 static const char *get_resource_name(void *resource_id)
 106 {
 107   return ((network_card_Constant_t) resource_id)->name;
 108 }
 109
 110 static int resource_used(void *resource_id)
 111 {
 112   return 0;
 113 }
 114
 115 static int action_free(surf_action_t action)
 116 {
 117   action->using--;
 118   if (!action->using) {
 119     xbt_swag_remove(action, action->state_set);
 120     free(action);
 121     return 1;
 122   }
 123   return 0;
 124 }
 125
 126 static void action_use(surf_action_t action)
 127 {
 128   action->using++;
 129 }
 130
 131 static void action_cancel(surf_action_t action)
 132 {
 133   return;
 134 }
 135
 136 static void action_recycle(surf_action_t action)
 137 {
 138   return;
 139 }
 140
 141 static void action_change_state(surf_action_t action,
 142                                 e_surf_action_state_t state)
 143 {
 144   surf_action_change_state(action, state);
 145   return;
 146 }
 147
 148 static double share_resources(double now)
 149 {
 150   surf_action_network_Constant_t action = NULL;
 151   xbt_swag_t running_actions =
 152       surf_network_model->common_public->states.running_action_set;
 153   double min = -1.0;
 154
 155   xbt_swag_foreach(action, running_actions) {
 156     if (action->latency > 0) {
 157       if (min < 0)
 158         min = action->latency;
 159       else if (action->latency < min)
 160         min = action->latency;
 161     }
 162   }
 163
 164   return min;
 165 }
 166
 167 static void update_actions_state(double now, double delta)
 168 {
 169   surf_action_network_Constant_t action = NULL;
 170   surf_action_network_Constant_t next_action = NULL;
 171   xbt_swag_t running_actions =
 172       surf_network_model->common_public->states.running_action_set;
 173
 174   xbt_swag_foreach_safe(action, next_action, running_actions) {
 175     if (action->latency > 0) {
 176       if (action->latency > delta) {
 177         double_update(&(action->latency), delta);
 178       } else {
 179         action->latency = 0.0;
 180       }
 181     }
 182     double_update(&(action->generic_action.remains),
 183                   action->generic_action.cost * delta/action->lat_init);
 184     if (action->generic_action.max_duration != NO_MAX_DURATION)
 185       double_update(&(action->generic_action.max_duration), delta);
 186
 187     if (action->generic_action.remains <= 0) {
 188       action->generic_action.finish = surf_get_clock();
 189       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 190     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 191                (action->generic_action.max_duration <= 0)) {
 192       action->generic_action.finish = surf_get_clock();
 193       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 194     }
 195   }
 196
 197   return;
 198 }
 199
 200 static void update_resource_state(void *id,
 201                                   tmgr_trace_event_t event_type,
 202                                   double value, double time)
 203 {
 204   DIE_IMPOSSIBLE;
 205 }
 206
 207 static surf_action_t communicate(void *src, void *dst, double size,
 208                                  double rate)
 209 {
 210   surf_action_network_Constant_t action = NULL;
 211   network_card_Constant_t card_src = src;
 212   network_card_Constant_t card_dst = dst;
 213
 214   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 215
 216   action = xbt_new0(s_surf_action_network_Constant_t, 1);
 217
 218   action->generic_action.using = 1;
 219   action->generic_action.cost = size;
 220   action->generic_action.remains = size;
 221   action->generic_action.max_duration = NO_MAX_DURATION;
 222   action->generic_action.start = surf_get_clock();
 223   action->generic_action.finish = -1.0;
 224   action->generic_action.model_type =
 225       (surf_model_t) surf_network_model;
 226   action->suspended = 0;
 227
 228   action->latency = random_generate(random_latency);
 229   action->lat_init = action->latency;
 230
 231   if(action->latency<=0.0)
 232     action->generic_action.state_set =
 233       surf_network_model->common_public->states.done_action_set;
 234   else
 235     action->generic_action.state_set =
 236       surf_network_model->common_public->states.running_action_set;
 237
 238   xbt_swag_insert(action, action->generic_action.state_set);
 239
 240
 241   XBT_OUT;
 242
 243   return (surf_action_t) action;
 244 }
 245
 246 /* returns an array of link_Constant_t */
 247 static const void **get_route(void *src, void *dst)
 248 {
 249   xbt_assert0(0, "Calling this function does not make any sense");
 250   return (const void **) NULL;
 251 }
 252
 253 static int get_route_size(void *src, void *dst)
 254 {
 255   xbt_assert0(0, "Calling this function does not make any sense");
 256   return 0;
 257 }
 258
 259 static const char *get_link_name(const void *link)
 260 {
 261   DIE_IMPOSSIBLE;
 262 }
 263
 264 static double get_link_bandwidth(const void *link)
 265 {
 266   DIE_IMPOSSIBLE;
 267 }
 268
 269 static double get_link_latency(const void *link)
 270 {
 271   DIE_IMPOSSIBLE;
 272 }
 273
 274 static xbt_dict_t get_properties(void *link)
 275 {
 276   DIE_IMPOSSIBLE;
 277 }
 278
 279 static void action_suspend(surf_action_t action)
 280 {
 281   ((surf_action_network_Constant_t) action)->suspended = 1;
 282 }
 283
 284 static void action_resume(surf_action_t action)
 285 {
 286   if (((surf_action_network_Constant_t) action)->suspended)
 287     ((surf_action_network_Constant_t) action)->suspended = 0;
 288 }
 289
 290 static int action_is_suspended(surf_action_t action)
 291 {
 292   return ((surf_action_network_Constant_t) action)->suspended;
 293 }
 294
 295 static void action_set_max_duration(surf_action_t action, double duration)
 296 {
 297   action->max_duration = duration;
 298 }
 299
 300 static void finalize(void)
 301 {
 302   xbt_dict_free(&network_card_set);
 303   xbt_swag_free(surf_network_model->common_public->states.
 304                 ready_action_set);
 305   xbt_swag_free(surf_network_model->common_public->states.
 306                 running_action_set);
 307   xbt_swag_free(surf_network_model->common_public->states.
 308                 failed_action_set);
 309   xbt_swag_free(surf_network_model->common_public->states.
 310                 done_action_set);
 311   free(surf_network_model->common_public);
 312   free(surf_network_model->common_private);
 313   free(surf_network_model->extension_public);
 314
 315   free(surf_network_model);
 316   surf_network_model = NULL;
 317
 318   card_number = 0;
 319 }
 320
 321 static void surf_network_model_init_internal(void)
 322 {
 323   s_surf_action_t action;
 324
 325   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 326
 327   surf_network_model->common_private =
 328       xbt_new0(s_surf_model_private_t, 1);
 329   surf_network_model->common_public =
 330       xbt_new0(s_surf_model_public_t, 1);
 331   surf_network_model->extension_public =
 332       xbt_new0(s_surf_network_model_extension_public_t, 1);
 333
 334   surf_network_model->common_public->states.ready_action_set =
 335       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 336   surf_network_model->common_public->states.running_action_set =
 337       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 338   surf_network_model->common_public->states.failed_action_set =
 339       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 340   surf_network_model->common_public->states.done_action_set =
 341       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 342
 343   surf_network_model->common_public->name_service = name_service;
 344   surf_network_model->common_public->get_resource_name =
 345       get_resource_name;
 346   surf_network_model->common_public->action_get_state =
 347       surf_action_get_state;
 348   surf_network_model->common_public->action_get_start_time =
 349       surf_action_get_start_time;
 350   surf_network_model->common_public->action_get_finish_time =
 351       surf_action_get_finish_time;
 352   surf_network_model->common_public->action_free = action_free;
 353   surf_network_model->common_public->action_use = action_use;
 354   surf_network_model->common_public->action_cancel = action_cancel;
 355   surf_network_model->common_public->action_recycle = action_recycle;
 356   surf_network_model->common_public->action_change_state =
 357       action_change_state;
 358   surf_network_model->common_public->action_set_data =
 359       surf_action_set_data;
 360   surf_network_model->common_public->name = "network";
 361
 362   surf_network_model->common_private->resource_used = resource_used;
 363   surf_network_model->common_private->share_resources = share_resources;
 364   surf_network_model->common_private->update_actions_state =
 365       update_actions_state;
 366   surf_network_model->common_private->update_resource_state =
 367       update_resource_state;
 368   surf_network_model->common_private->finalize = finalize;
 369
 370   surf_network_model->common_public->suspend = action_suspend;
 371   surf_network_model->common_public->resume = action_resume;
 372   surf_network_model->common_public->is_suspended = action_is_suspended;
 373   surf_cpu_model->common_public->set_max_duration =
 374       action_set_max_duration;
 375
 376   surf_network_model->extension_public->communicate = communicate;
 377   surf_network_model->extension_public->get_route = get_route;
 378   surf_network_model->extension_public->get_route_size = get_route_size;
 379   surf_network_model->extension_public->get_link_name = get_link_name;
 380   surf_network_model->extension_public->get_link_bandwidth =
 381       get_link_bandwidth;
 382   surf_network_model->extension_public->get_link_latency =
 383       get_link_latency;
 384
 385   surf_network_model->common_public->get_properties =  get_properties;
 386
 387   network_card_set = xbt_dict_new();
 388
 389   if(!random_latency)
 390     random_latency = random_new(RAND, 100, 0.0, 1.0, .125, .034);
 391 }
 392
 393 void surf_network_model_init_Constant(const char *filename)
 394 {
 395
 396   if (surf_network_model)
 397     return;
 398   surf_network_model_init_internal();
 399   define_callbacks(filename);
 400   xbt_dynar_push(model_list, &surf_network_model);
 401
 402   update_model_description(surf_network_model_description,
 403                            "Constant",
 404                            (surf_model_t) surf_network_model);
 405 }