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