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 "xbt/dict.h"
  11 #include "xbt/str.h"
  12 #include "xbt/log.h"
  13
  14 #define CONSTANT_VALUE 1.0
  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_current;
  24   double rate;
  25   int suspended;
  26   network_card_Constant_t src;
  27   network_card_Constant_t dst;
  28 } s_surf_action_network_Constant_t, *surf_action_network_Constant_t;
  29
  30 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
  31
  32 static int card_number = 0;
  33 static int host_number = 0;
  34
  35 static void network_card_free(void *nw_card)
  36 {
  37   free(((network_card_Constant_t) nw_card)->name);
  38   free(nw_card);
  39 }
  40
  41 static int network_card_new(const char *card_name)
  42 {
  43   network_card_Constant_t card =
  44       xbt_dict_get_or_null(network_card_set, card_name);
  45
  46   if (!card) {
  47     card = xbt_new0(s_network_card_Constant_t, 1);
  48     card->name = xbt_strdup(card_name);
  49     card->id = card_number++;
  50     xbt_dict_set(network_card_set, card_name, card, network_card_free);
  51   }
  52   return card->id;
  53 }
  54
  55 static int src_id = -1;
  56 static int dst_id = -1;
  57
  58 static void parse_route_set_endpoints(void)
  59 {
  60   src_id = network_card_new(A_surfxml_route_src);
  61   dst_id = network_card_new(A_surfxml_route_dst);
  62   route_action = A_surfxml_route_action;
  63   route_link_list = xbt_dynar_new(sizeof(char *), &free_string);
  64 }
  65
  66 static void parse_route_set_route(void)
  67 {
  68   char *name;
  69   if (src_id != -1 && dst_id != -1) {
  70     name = bprintf("%x#%x",src_id, dst_id);
  71     manage_route(route_table, name, route_action, 0);
  72     free(name);
  73   }
  74 }
  75
  76 static void count_hosts(void)
  77 {
  78    host_number++;
  79 }
  80
  81 static void define_callbacks(const char *file)
  82 {
  83   /* Figuring out the network links */
  84   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
  85   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties);
  86   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
  87   surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, &parse_route_elem);
  88   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
  89   surfxml_add_callback(STag_surfxml_platform_cb_list, &init_data);
  90   surfxml_add_callback(STag_surfxml_set_cb_list, &parse_sets);
  91   surfxml_add_callback(STag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_endpoints);
  92   surfxml_add_callback(ETag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_route);
  93   surfxml_add_callback(STag_surfxml_foreach_cb_list, &parse_foreach);
  94   surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_cluster);
  95   surfxml_add_callback(STag_surfxml_trace_cb_list, &parse_trace_init);
  96   surfxml_add_callback(ETag_surfxml_trace_cb_list, &parse_trace_finalize);
  97   surfxml_add_callback(STag_surfxml_trace_c_connect_cb_list, &parse_trace_c_connect);
  98 }
  99
 100 static void *name_service(const char *name)
 101 {
 102   network_card_Constant_t card = xbt_dict_get_or_null(network_card_set, name);
 103   return card;
 104 }
 105
 106 static const char *get_resource_name(void *resource_id)
 107 {
 108   return ((network_card_Constant_t) resource_id)->name;
 109 }
 110
 111 static int resource_used(void *resource_id)
 112 {
 113   return 0;
 114 }
 115
 116 static int action_free(surf_action_t action)
 117 {
 118   action->using--;
 119   if (!action->using) {
 120     xbt_swag_remove(action, action->state_set);
 121     free(action);
 122     return 1;
 123   }
 124   return 0;
 125 }
 126
 127 static void action_use(surf_action_t action)
 128 {
 129   action->using++;
 130 }
 131
 132 static void action_cancel(surf_action_t action)
 133 {
 134   return;
 135 }
 136
 137 static void action_recycle(surf_action_t action)
 138 {
 139   return;
 140 }
 141
 142 static void action_change_state(surf_action_t action,
 143                                 e_surf_action_state_t state)
 144 {
 145   surf_action_change_state(action, state);
 146   return;
 147 }
 148
 149 static double share_resources(double now)
 150 {
 151   surf_action_network_Constant_t action = NULL;
 152   xbt_swag_t running_actions =
 153       surf_network_model->common_public->states.running_action_set;
 154   double min = -1.0;
 155
 156   xbt_swag_foreach(action, running_actions) {
 157     if (action->latency > 0) {
 158       if (min < 0)
 159         min = action->latency;
 160       else if (action->latency < min)
 161         min = action->latency;
 162     }
 163   }
 164
 165   return min;
 166 }
 167
 168 static void update_actions_state(double now, double delta)
 169 {
 170   surf_action_network_Constant_t action = NULL;
 171   surf_action_network_Constant_t next_action = NULL;
 172   xbt_swag_t running_actions =
 173       surf_network_model->common_public->states.running_action_set;
 174
 175   xbt_swag_foreach_safe(action, next_action, running_actions) {
 176     if (action->latency > 0) {
 177       if (action->latency > delta) {
 178         double_update(&(action->latency), delta);
 179       } else {
 180         action->latency = 0.0;
 181       }
 182     }
 183     double_update(&(action->generic_action.remains),
 184                   action->generic_action.cost * delta/ CONSTANT_VALUE);
 185     if (action->generic_action.max_duration != NO_MAX_DURATION)
 186       double_update(&(action->generic_action.max_duration), delta);
 187
 188     if (action->generic_action.remains <= 0) {
 189       action->generic_action.finish = surf_get_clock();
 190       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 191     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 192                (action->generic_action.max_duration <= 0)) {
 193       action->generic_action.finish = surf_get_clock();
 194       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 195     }
 196   }
 197
 198   return;
 199 }
 200
 201 static void update_resource_state(void *id,
 202                                   tmgr_trace_event_t event_type,
 203                                   double value)
 204 {
 205   DIE_IMPOSSIBLE;
 206 }
 207
 208 static surf_action_t communicate(void *src, void *dst, double size,
 209                                  double rate)
 210 {
 211   surf_action_network_Constant_t action = NULL;
 212   network_card_Constant_t card_src = src;
 213   network_card_Constant_t card_dst = dst;
 214
 215   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 216
 217   action = xbt_new0(s_surf_action_network_Constant_t, 1);
 218
 219   action->generic_action.using = 1;
 220   action->generic_action.cost = size;
 221   action->generic_action.remains = size;
 222   action->generic_action.max_duration = NO_MAX_DURATION;
 223   action->generic_action.start = surf_get_clock();
 224   action->generic_action.finish = -1.0;
 225   action->generic_action.model_type =
 226       (surf_model_t) surf_network_model;
 227   action->suspended = 0;
 228   action->generic_action.state_set =
 229       surf_network_model->common_public->states.running_action_set;
 230
 231   xbt_swag_insert(action, action->generic_action.state_set);
 232   action->rate = rate;
 233
 234   action->latency = CONSTANT_VALUE;
 235   action->lat_current = action->latency;
 236
 237   XBT_OUT;
 238
 239   return (surf_action_t) action;
 240 }
 241
 242 /* returns an array of link_Constant_t */
 243 static const void **get_route(void *src, void *dst)
 244 {
 245   xbt_assert0(0, "Calling this function does not make any sense");
 246   return (const void **) NULL;
 247 }
 248
 249 static int get_route_size(void *src, void *dst)
 250 {
 251   xbt_assert0(0, "Calling this function does not make any sense");
 252   return 0;
 253 }
 254
 255 static const char *get_link_name(const void *link)
 256 {
 257   DIE_IMPOSSIBLE;
 258 }
 259
 260 static double get_link_bandwidth(const void *link)
 261 {
 262   DIE_IMPOSSIBLE;
 263 }
 264
 265 static double get_link_latency(const void *link)
 266 {
 267   DIE_IMPOSSIBLE;
 268 }
 269
 270 static xbt_dict_t get_properties(void *link)
 271 {
 272   DIE_IMPOSSIBLE;
 273 }
 274
 275 static void action_suspend(surf_action_t action)
 276 {
 277   ((surf_action_network_Constant_t) action)->suspended = 1;
 278 }
 279
 280 static void action_resume(surf_action_t action)
 281 {
 282   if (((surf_action_network_Constant_t) action)->suspended)
 283     ((surf_action_network_Constant_t) action)->suspended = 0;
 284 }
 285
 286 static int action_is_suspended(surf_action_t action)
 287 {
 288   return ((surf_action_network_Constant_t) action)->suspended;
 289 }
 290
 291 static void action_set_max_duration(surf_action_t action, double duration)
 292 {
 293   action->max_duration = duration;
 294 }
 295
 296 static void finalize(void)
 297 {
 298   xbt_dict_free(&network_card_set);
 299   xbt_dict_free(&link_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   link_set = xbt_dict_new();
 385   network_card_set = xbt_dict_new();
 386
 387 }
 388
 389 void surf_network_model_init_Constant(const char *filename)
 390 {
 391
 392   if (surf_network_model)
 393     return;
 394   surf_network_model_init_internal();
 395   define_callbacks(filename);
 396   xbt_dynar_push(model_list, &surf_network_model);
 397
 398   update_model_description(surf_network_model_description,
 399                               surf_network_model_description_size,
 400                               "Constant",
 401                               (surf_model_t) surf_network_model);
 402 }