src/surf/cpu.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 "cpu_private.h"
   9
  10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(cpu, surf,
  11                                 "Logging specific to the SURF CPU module");
  12
  13 surf_cpu_resource_t surf_cpu_resource = NULL;
  14
  15 xbt_dict_t cpu_set = NULL;
  16
  17 static void cpu_free(void *cpu)
  18 {
  19   free(((cpu_Cas01_t)cpu)->name);
  20   free(cpu);
  21 }
  22
  23 static cpu_Cas01_t cpu_new(char *name, double power_scale,
  24                      double power_initial,
  25                      tmgr_trace_t power_trace,
  26                      e_surf_cpu_state_t state_initial,
  27                      tmgr_trace_t state_trace)
  28 {
  29   cpu_Cas01_t cpu = xbt_new0(s_cpu_Cas01_t, 1);
  30
  31   cpu->resource = (surf_resource_t) surf_cpu_resource;
  32   cpu->name = name;
  33   cpu->power_scale = power_scale;
  34   xbt_assert0(cpu->power_scale>0,"Power has to be >0");
  35   cpu->power_current = power_initial;
  36   if (power_trace)
  37     cpu->power_event =
  38         tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
  39
  40   cpu->state_current = state_initial;
  41   if (state_trace)
  42     cpu->state_event =
  43         tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
  44
  45   cpu->constraint =
  46       lmm_constraint_new(maxmin_system, cpu,
  47                          cpu->power_current * cpu->power_scale);
  48
  49   xbt_dict_set(cpu_set, name, cpu, cpu_free);
  50
  51   return cpu;
  52 }
  53
  54 static void parse_cpu(void)
  55 {
  56   char *name = NULL;
  57   double power_scale = 0.0;
  58   double power_initial = 0.0;
  59   tmgr_trace_t power_trace = NULL;
  60   e_surf_cpu_state_t state_initial = SURF_CPU_OFF;
  61   tmgr_trace_t state_trace = NULL;
  62
  63   name = xbt_strdup(A_surfxml_cpu_name);
  64   surf_parse_get_double(&power_scale,A_surfxml_cpu_power);
  65   surf_parse_get_double(&power_initial,A_surfxml_cpu_availability);
  66   surf_parse_get_trace(&power_trace,A_surfxml_cpu_availability_file);
  67
  68   xbt_assert0((A_surfxml_cpu_state==A_surfxml_cpu_state_ON)||
  69               (A_surfxml_cpu_state==A_surfxml_cpu_state_OFF),
  70               "Invalid state");
  71   if (A_surfxml_cpu_state==A_surfxml_cpu_state_ON) state_initial = SURF_CPU_ON;
  72   if (A_surfxml_cpu_state==A_surfxml_cpu_state_OFF) state_initial = SURF_CPU_OFF;
  73   surf_parse_get_trace(&state_trace,A_surfxml_cpu_state_file);
  74
  75   cpu_new(name, power_scale, power_initial, power_trace, state_initial,
  76           state_trace);
  77 }
  78
  79 static void parse_file(const char *file)
  80 {
  81   surf_parse_reset_parser();
  82   ETag_surfxml_cpu_fun=parse_cpu;
  83   surf_parse_open(file);
  84   xbt_assert1((!surf_parse()),"Parse error in %s",file);
  85   surf_parse_close();
  86 }
  87
  88 static void *name_service(const char *name)
  89 {
  90   return xbt_dict_get_or_null(cpu_set, name);
  91 }
  92
  93 static const char *get_resource_name(void *resource_id)
  94 {
  95   return ((cpu_Cas01_t) resource_id)->name;
  96 }
  97
  98 static int resource_used(void *resource_id)
  99 {
 100   return lmm_constraint_used(maxmin_system,
 101                              ((cpu_Cas01_t) resource_id)->constraint);
 102 }
 103
 104 static int action_free(surf_action_t action)
 105 {
 106   action->using--;
 107   if(!action->using) {
 108     xbt_swag_remove(action, action->state_set);
 109     if(((surf_action_cpu_Cas01_t)action)->variable)
 110       lmm_variable_free(maxmin_system, ((surf_action_cpu_Cas01_t)action)->variable);
 111     free(action);
 112     return 1;
 113   }
 114   return 0;
 115 }
 116
 117 static void action_use(surf_action_t action)
 118 {
 119   action->using++;
 120 }
 121
 122 static void action_cancel(surf_action_t action)
 123 {
 124   surf_action_change_state(action, SURF_ACTION_FAILED);
 125   return;
 126 }
 127
 128 static void action_recycle(surf_action_t action)
 129 {
 130   DIE_IMPOSSIBLE;
 131   return;
 132 }
 133
 134 static void action_change_state(surf_action_t action,
 135                                 e_surf_action_state_t state)
 136 {
 137 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 138 /*     if(((surf_action_cpu_Cas01_t)action)->variable) { */
 139 /*       lmm_variable_disable(maxmin_system, ((surf_action_cpu_Cas01_t)action)->variable); */
 140 /*       ((surf_action_cpu_Cas01_t)action)->variable = NULL; */
 141 /*     } */
 142
 143   surf_action_change_state(action, state);
 144   return;
 145 }
 146
 147 static double share_resources(double now)
 148 {
 149   s_surf_action_cpu_Cas01_t action;
 150   return generic_maxmin_share_resources(surf_cpu_resource->common_public->
 151                                         states.running_action_set,
 152                                         xbt_swag_offset(action, variable));
 153 }
 154
 155 static void update_actions_state(double now, double delta)
 156 {
 157   surf_action_cpu_Cas01_t action = NULL;
 158   surf_action_cpu_Cas01_t next_action = NULL;
 159   xbt_swag_t running_actions =
 160       surf_cpu_resource->common_public->states.running_action_set;
 161   /* FIXME: UNUSED
 162   xbt_swag_t failed_actions =
 163       surf_cpu_resource->common_public->states.failed_action_set;
 164   */
 165
 166   xbt_swag_foreach_safe(action, next_action, running_actions) {
 167     surf_double_update(&(action->generic_action.remains),
 168         lmm_variable_getvalue(action->variable) * delta);
 169     if (action->generic_action.max_duration != NO_MAX_DURATION)
 170       surf_double_update(&(action->generic_action.max_duration), delta);
 171     if ((action->generic_action.remains <= 0) &&
 172         (lmm_get_variable_weight(action->variable)>0)) {
 173       action->generic_action.finish = surf_get_clock();
 174       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 175     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 176                (action->generic_action.max_duration <= 0)) {
 177       action->generic_action.finish = surf_get_clock();
 178       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 179     } else {                    /* Need to check that none of the resource has failed */
 180       lmm_constraint_t cnst = NULL;
 181       int i = 0;
 182       cpu_Cas01_t cpu = NULL;
 183
 184       while ((cnst =
 185               lmm_get_cnst_from_var(maxmin_system, action->variable,
 186                                     i++))) {
 187         cpu = lmm_constraint_id(cnst);
 188         if (cpu->state_current == SURF_CPU_OFF) {
 189           action->generic_action.finish = surf_get_clock();
 190           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 191           break;
 192         }
 193       }
 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)
 203 {
 204   cpu_Cas01_t cpu = id;
 205
 206   if (event_type == cpu->power_event) {
 207     cpu->power_current = value;
 208     lmm_update_constraint_bound(maxmin_system, cpu->constraint,
 209                                 cpu->power_current * cpu->power_scale);
 210   } else if (event_type == cpu->state_event) {
 211     if (value > 0)
 212       cpu->state_current = SURF_CPU_ON;
 213     else
 214       cpu->state_current = SURF_CPU_OFF;
 215   } else {
 216     CRITICAL0("Unknown event ! \n");
 217     xbt_abort();
 218   }
 219
 220   return;
 221 }
 222
 223 static surf_action_t execute(void *cpu, double size)
 224 {
 225   surf_action_cpu_Cas01_t action = NULL;
 226   cpu_Cas01_t CPU = cpu;
 227
 228   XBT_IN2("(%s,%g)",CPU->name,size);
 229   action = xbt_new0(s_surf_action_cpu_Cas01_t, 1);
 230
 231   action->generic_action.using = 1;
 232   action->generic_action.cost = size;
 233   action->generic_action.remains = size;
 234   action->generic_action.priority = 1.0;
 235   action->generic_action.max_duration = NO_MAX_DURATION;
 236   action->generic_action.start = surf_get_clock();
 237   action->generic_action.finish = -1.0;
 238   action->generic_action.resource_type =
 239       (surf_resource_t) surf_cpu_resource;
 240
 241   if (CPU->state_current == SURF_CPU_ON)
 242     action->generic_action.state_set =
 243         surf_cpu_resource->common_public->states.running_action_set;
 244   else
 245     action->generic_action.state_set =
 246         surf_cpu_resource->common_public->states.failed_action_set;
 247   xbt_swag_insert(action, action->generic_action.state_set);
 248
 249   action->variable = lmm_variable_new(maxmin_system, action,
 250                                       action->generic_action.priority, -1.0, 1);
 251   lmm_expand(maxmin_system, CPU->constraint, action->variable,
 252              1.0);
 253   XBT_OUT;
 254   return (surf_action_t) action;
 255 }
 256
 257 static surf_action_t action_sleep(void *cpu, double duration)
 258 {
 259   surf_action_cpu_Cas01_t action = NULL;
 260
 261   XBT_IN2("(%s,%g)",((cpu_Cas01_t)cpu)->name,duration);
 262   action = (surf_action_cpu_Cas01_t) execute(cpu, 1.0);
 263   action->generic_action.max_duration = duration;
 264   lmm_update_variable_weight(maxmin_system, action->variable, 0.0);
 265   XBT_OUT;
 266   return (surf_action_t) action;
 267 }
 268
 269 static void action_suspend(surf_action_t action)
 270 {
 271   XBT_IN1("(%p)",action);
 272   lmm_update_variable_weight(maxmin_system,
 273                              ((surf_action_cpu_Cas01_t) action)->variable, 0.0);
 274   XBT_OUT;
 275 }
 276
 277 static void action_resume(surf_action_t action)
 278 {
 279   XBT_IN1("(%p)",action);
 280   lmm_update_variable_weight(maxmin_system,
 281                              ((surf_action_cpu_Cas01_t) action)->variable,
 282                              action->priority);
 283   XBT_OUT;
 284 }
 285
 286 static int action_is_suspended(surf_action_t action)
 287 {
 288   return (lmm_get_variable_weight(((surf_action_cpu_Cas01_t) action)->variable) == 0.0);
 289 }
 290
 291 static void action_set_max_duration(surf_action_t action, double duration)
 292 {
 293   XBT_IN2("(%p,%g)",action,duration);
 294   action->max_duration = duration;
 295   XBT_OUT;
 296 }
 297
 298 static void action_set_priority(surf_action_t action, double priority)
 299 {
 300   XBT_IN2("(%p,%g)",action,priority);
 301   action->priority = priority;
 302   XBT_OUT;
 303 }
 304
 305 static e_surf_cpu_state_t get_state(void *cpu)
 306 {
 307   return ((cpu_Cas01_t) cpu)->state_current;
 308 }
 309
 310 static double get_speed(void *cpu, double load)
 311 {
 312   return load*(((cpu_Cas01_t) cpu)->power_scale);
 313 }
 314
 315 static void finalize(void)
 316 {
 317   xbt_dict_free(&cpu_set);
 318   xbt_swag_free(surf_cpu_resource->common_public->states.ready_action_set);
 319   xbt_swag_free(surf_cpu_resource->common_public->states.
 320                 running_action_set);
 321   xbt_swag_free(surf_cpu_resource->common_public->states.
 322                 failed_action_set);
 323   xbt_swag_free(surf_cpu_resource->common_public->states.done_action_set);
 324   free(surf_cpu_resource->common_public);
 325   free(surf_cpu_resource->common_private);
 326   free(surf_cpu_resource->extension_public);
 327
 328   free(surf_cpu_resource);
 329   surf_cpu_resource = NULL;
 330 }
 331
 332 static void surf_cpu_resource_init_internal(void)
 333 {
 334   s_surf_action_t action;
 335
 336   surf_cpu_resource = xbt_new0(s_surf_cpu_resource_t, 1);
 337
 338   surf_cpu_resource->common_private =
 339       xbt_new0(s_surf_resource_private_t, 1);
 340   surf_cpu_resource->common_public = xbt_new0(s_surf_resource_public_t, 1);
 341
 342   surf_cpu_resource->extension_public =
 343       xbt_new0(s_surf_cpu_resource_extension_public_t, 1);
 344
 345   surf_cpu_resource->common_public->states.ready_action_set =
 346       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 347   surf_cpu_resource->common_public->states.running_action_set =
 348       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 349   surf_cpu_resource->common_public->states.failed_action_set =
 350       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 351   surf_cpu_resource->common_public->states.done_action_set =
 352       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 353
 354   surf_cpu_resource->common_public->name_service = name_service;
 355   surf_cpu_resource->common_public->get_resource_name = get_resource_name;
 356   surf_cpu_resource->common_public->action_get_state =
 357       surf_action_get_state;
 358   surf_cpu_resource->common_public->action_free = action_free;
 359   surf_cpu_resource->common_public->action_use = action_use;
 360   surf_cpu_resource->common_public->action_cancel = action_cancel;
 361   surf_cpu_resource->common_public->action_recycle = action_recycle;
 362   surf_cpu_resource->common_public->action_change_state =
 363       action_change_state;
 364   surf_cpu_resource->common_public->action_set_data = surf_action_set_data;
 365   surf_cpu_resource->common_public->name = "CPU";
 366
 367   surf_cpu_resource->common_private->resource_used = resource_used;
 368   surf_cpu_resource->common_private->share_resources = share_resources;
 369   surf_cpu_resource->common_private->update_actions_state =
 370       update_actions_state;
 371   surf_cpu_resource->common_private->update_resource_state =
 372       update_resource_state;
 373   surf_cpu_resource->common_private->finalize = finalize;
 374
 375   surf_cpu_resource->common_public->suspend = action_suspend;
 376   surf_cpu_resource->common_public->resume = action_resume;
 377   surf_cpu_resource->common_public->is_suspended = action_is_suspended;
 378   surf_cpu_resource->common_public->set_max_duration = action_set_max_duration;
 379   surf_cpu_resource->common_public->set_priority = action_set_priority;
 380   surf_cpu_resource->extension_public->execute = execute;
 381   surf_cpu_resource->extension_public->sleep = action_sleep;
 382
 383   surf_cpu_resource->extension_public->get_state = get_state;
 384   surf_cpu_resource->extension_public->get_speed = get_speed;
 385
 386   cpu_set = xbt_dict_new();
 387
 388   xbt_assert0(maxmin_system, "surf_init has to be called first!");
 389 }
 390
 391 /*********************************************************************/
 392 /* Basic sharing model for CPU: that is where all this started... ;) */
 393 /*********************************************************************/
 394 /* @InProceedings{casanova01simgrid, */
 395 /*   author =       "H. Casanova", */
 396 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 397 /*                  and the Grid (CCGrid'01)", */
 398 /*   publisher =    "IEEE Computer Society", */
 399 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 400 /*                  Scheduling", */
 401 /*   year =         "2001", */
 402 /*   month =        may, */
 403 /*   note =         "Available at */
 404 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 405 /* } */
 406 void surf_cpu_resource_init_Cas01(const char *filename)
 407 {
 408   if (surf_cpu_resource)
 409     return;
 410   surf_cpu_resource_init_internal();
 411   parse_file(filename);
 412   xbt_dynar_push(resource_list, &surf_cpu_resource);
 413 }