src/simix/smx_io.c

   1 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "smx_private.h"
   8 #include "surf/storage_private.h"
   9 #include "xbt/sysdep.h"
  10 #include "xbt/log.h"
  11 #include "xbt/dict.h"
  12 #include "mc/mc.h"
  13
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix,
  15                                 "Logging specific to SIMIX (io)");
  16
  17
  18 //SIMIX FILE READ
  19 void SIMIX_pre_file_read(smx_simcall_t simcall, void *ptr, size_t size,
  20                          size_t nmemb, smx_file_t fd)
  21 {
  22   smx_action_t action = SIMIX_file_read(simcall->issuer, ptr, size, nmemb, fd);
  23   xbt_fifo_push(action->simcalls, simcall);
  24   simcall->issuer->waiting_action = action;
  25 }
  26
  27 smx_action_t SIMIX_file_read(smx_process_t process, void* ptr, size_t size,
  28                              size_t nmemb, smx_file_t fd)
  29 {
  30   smx_action_t action;
  31   smx_host_t host = process->smx_host;
  32
  33   /* check if the host is active */
  34   if (surf_workstation_model->extension.
  35       workstation.get_state(host) != SURF_RESOURCE_ON) {
  36     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  37            sg_host_name(host));
  38   }
  39
  40   action = xbt_mallocator_get(simix_global->action_mallocator);
  41   action->type = SIMIX_ACTION_IO;
  42   action->name = NULL;
  43 #ifdef HAVE_TRACING
  44   action->category = NULL;
  45 #endif
  46
  47   action->io.host = host;
  48   action->io.surf_io =
  49       surf_workstation_model->extension.workstation.read(host, ptr, size, nmemb,
  50                                                          fd->surf_file);
  51
  52   surf_workstation_model->action_data_set(action->io.surf_io, action);
  53   XBT_DEBUG("Create io action %p", action);
  54
  55   return action;
  56 }
  57
  58 //SIMIX FILE WRITE
  59 void SIMIX_pre_file_write(smx_simcall_t simcall, const void *ptr, size_t size,
  60                           size_t nmemb, smx_file_t fd)
  61 {
  62   smx_action_t action = SIMIX_file_write(simcall->issuer, ptr, size, nmemb, fd);
  63   xbt_fifo_push(action->simcalls, simcall);
  64   simcall->issuer->waiting_action = action;
  65 }
  66
  67 smx_action_t SIMIX_file_write(smx_process_t process, const void* ptr,
  68                               size_t size, size_t nmemb, smx_file_t fd)
  69 {
  70   smx_action_t action;
  71   smx_host_t host = process->smx_host;
  72
  73   /* check if the host is active */
  74   if (surf_workstation_model->extension.
  75       workstation.get_state(host) != SURF_RESOURCE_ON) {
  76     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  77            sg_host_name(host));
  78   }
  79
  80   action = xbt_mallocator_get(simix_global->action_mallocator);
  81   action->type = SIMIX_ACTION_IO;
  82   action->name = NULL;
  83 #ifdef HAVE_TRACING
  84   action->category = NULL;
  85 #endif
  86
  87   action->io.host = host;
  88   action->io.surf_io =
  89       surf_workstation_model->extension.workstation.write(host, ptr, size,
  90                                                           nmemb, fd->surf_file);
  91
  92   surf_workstation_model->action_data_set(action->io.surf_io, action);
  93   XBT_DEBUG("Create io action %p", action);
  94
  95   return action;
  96 }
  97
  98 //SIMIX FILE OPEN
  99 void SIMIX_pre_file_open(smx_simcall_t simcall, const char* mount,
 100                          const char* path)
 101 {
 102   smx_action_t action = SIMIX_file_open(simcall->issuer, mount, path);
 103   xbt_fifo_push(action->simcalls, simcall);
 104   simcall->issuer->waiting_action = action;
 105 }
 106
 107 smx_action_t SIMIX_file_open(smx_process_t process ,const char* mount,
 108                              const char* path)
 109 {
 110   smx_action_t action;
 111   smx_host_t host = process->smx_host;
 112
 113   /* check if the host is active */
 114   if (surf_workstation_model->extension.
 115       workstation.get_state(host) != SURF_RESOURCE_ON) {
 116     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 117            sg_host_name(host));
 118   }
 119
 120   action = xbt_mallocator_get(simix_global->action_mallocator);
 121   action->type = SIMIX_ACTION_IO;
 122   action->name = NULL;
 123 #ifdef HAVE_TRACING
 124   action->category = NULL;
 125 #endif
 126
 127   action->io.host = host;
 128   action->io.surf_io =
 129       surf_workstation_model->extension.workstation.open(host, mount, path);
 130
 131   surf_workstation_model->action_data_set(action->io.surf_io, action);
 132   XBT_DEBUG("Create io action %p", action);
 133
 134   return action;
 135 }
 136
 137 //SIMIX FILE CLOSE
 138 void SIMIX_pre_file_close(smx_simcall_t simcall, smx_file_t fd)
 139 {
 140   smx_action_t action = SIMIX_file_close(simcall->issuer, fd);
 141   xbt_fifo_push(action->simcalls, simcall);
 142   simcall->issuer->waiting_action = action;
 143 }
 144
 145 smx_action_t SIMIX_file_close(smx_process_t process, smx_file_t fd)
 146 {
 147   smx_action_t action;
 148   smx_host_t host = process->smx_host;
 149
 150   /* check if the host is active */
 151   if (surf_workstation_model->extension.
 152       workstation.get_state(host) != SURF_RESOURCE_ON) {
 153     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 154            sg_host_name(host));
 155   }
 156
 157   action = xbt_mallocator_get(simix_global->action_mallocator);
 158   action->type = SIMIX_ACTION_IO;
 159   action->name = NULL;
 160 #ifdef HAVE_TRACING
 161   action->category = NULL;
 162 #endif
 163
 164   action->io.host = host;
 165   action->io.surf_io = surf_workstation_model->extension.workstation.close(host, fd->surf_file);
 166
 167   surf_workstation_model->action_data_set(action->io.surf_io, action);
 168   XBT_DEBUG("Create io action %p", action);
 169
 170   return action;
 171 }
 172
 173
 174 //SIMIX FILE UNLINK
 175 void SIMIX_pre_file_unlink(smx_simcall_t simcall, smx_file_t fd)
 176 {
 177   smx_action_t action = SIMIX_file_unlink(simcall->issuer, fd);
 178   xbt_fifo_push(action->simcalls, simcall);
 179   simcall->issuer->waiting_action = action;
 180 }
 181
 182 smx_action_t SIMIX_file_unlink(smx_process_t process, smx_file_t fd)
 183 {
 184   smx_action_t action;
 185   smx_host_t host = process->smx_host;
 186   /* check if the host is active */
 187   if (surf_workstation_model->extension.
 188       workstation.get_state(host) != SURF_RESOURCE_ON) {
 189     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 190            sg_host_name(host));
 191   }
 192
 193   action = xbt_mallocator_get(simix_global->action_mallocator);
 194   action->type = SIMIX_ACTION_IO;
 195   action->name = NULL;
 196 #ifdef HAVE_TRACING
 197   action->category = NULL;
 198 #endif
 199
 200   action->io.host = host;
 201   action->io.surf_io = surf_workstation_model->extension.workstation.unlink(host, fd->surf_file);
 202
 203   surf_workstation_model->action_data_set(action->io.surf_io, action);
 204   XBT_DEBUG("Create io action %p", action);
 205
 206   return action;
 207 }
 208
 209 //SIMIX FILE LS
 210 void SIMIX_pre_file_ls(smx_simcall_t simcall,
 211                        const char* mount, const char* path)
 212 {
 213   smx_action_t action = SIMIX_file_ls(simcall->issuer, mount, path);
 214   xbt_fifo_push(action->simcalls, simcall);
 215   simcall->issuer->waiting_action = action;
 216 }
 217 smx_action_t SIMIX_file_ls(smx_process_t process, const char* mount, const char *path)
 218 {
 219   smx_action_t action;
 220   smx_host_t host = process->smx_host;
 221   /* check if the host is active */
 222   if (surf_workstation_model->extension.workstation.get_state(host) != SURF_RESOURCE_ON) {
 223     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 224            sg_host_name(host));
 225   }
 226
 227   action = xbt_mallocator_get(simix_global->action_mallocator);
 228   action->type = SIMIX_ACTION_IO;
 229   action->name = NULL;
 230 #ifdef HAVE_TRACING
 231   action->category = NULL;
 232 #endif
 233
 234   action->io.host = host;
 235   action->io.surf_io = surf_workstation_model->extension.workstation.ls(host,mount,path);
 236
 237   surf_workstation_model->action_data_set(action->io.surf_io, action);
 238   XBT_DEBUG("Create io action %p", action);
 239   return action;
 240 }
 241
 242 size_t SIMIX_pre_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 243 {
 244   return SIMIX_file_get_size(simcall->issuer, fd);
 245 }
 246
 247 size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 248 {
 249   smx_host_t host = process->smx_host;
 250   return  surf_workstation_model->extension.workstation.get_size(host,
 251       fd->surf_file);
 252 }
 253
 254
 255 void SIMIX_post_io(smx_action_t action)
 256 {
 257   xbt_fifo_item_t i;
 258   smx_simcall_t simcall;
 259 //  char* key;
 260 //  xbt_dict_cursor_t cursor = NULL;
 261 //  s_file_stat_t *dst = NULL;
 262 //  s_file_stat_t *src = NULL;
 263
 264   xbt_fifo_foreach(action->simcalls,i,simcall,smx_simcall_t) {
 265     switch (simcall->call) {
 266     case SIMCALL_FILE_OPEN:;
 267       smx_file_t tmp = xbt_new(s_smx_file_t,1);
 268       tmp->surf_file = (action->io.surf_io)->file;
 269       simcall_file_open__set__result(simcall, tmp);
 270       break;
 271
 272     case SIMCALL_FILE_CLOSE:
 273       xbt_free(simcall_file_close__get__fd(simcall));
 274       simcall_file_close__set__result(simcall, 0);
 275       break;
 276
 277     case SIMCALL_FILE_WRITE:
 278       simcall_file_write__set__result(simcall, (action->io.surf_io)->cost);
 279       break;
 280
 281     case SIMCALL_FILE_READ:
 282       simcall_file_read__set__result(simcall, (action->io.surf_io)->cost);
 283       break;
 284
 285     case SIMCALL_FILE_UNLINK:
 286       xbt_free(simcall_file_unlink__get__fd(simcall));
 287       simcall_file_unlink__set__result(simcall, 0);
 288       break;
 289
 290     case SIMCALL_FILE_LS:
 291 //      xbt_dict_foreach((action->io.surf_io)->ls_dict,cursor,key, src){
 292 //        // if there is a stat we have to duplicate it
 293 //        if(src){
 294 //          dst = xbt_new0(s_file_stat_t,1);
 295 //          file_stat_copy(src, dst);
 296 //          xbt_dict_set((action->io.surf_io)->ls_dict,key,dst,xbt_free);
 297 //        }
 298 //      }
 299       simcall_file_ls__set__result(simcall, (action->io.surf_io)->ls_dict);
 300       break;
 301     default:
 302       break;
 303     }
 304   }
 305
 306   switch (surf_workstation_model->action_state_get(action->io.surf_io)) {
 307
 308     case SURF_ACTION_FAILED:
 309       action->state = SIMIX_FAILED;
 310       break;
 311
 312     case SURF_ACTION_DONE:
 313       action->state = SIMIX_DONE;
 314       break;
 315
 316     default:
 317       THROW_IMPOSSIBLE;
 318       break;
 319   }
 320
 321   SIMIX_io_finish(action);
 322 }
 323
 324 void SIMIX_io_destroy(smx_action_t action)
 325 {
 326   XBT_DEBUG("Destroy action %p", action);
 327   if (action->io.surf_io)
 328     action->io.surf_io->model_type->action_unref(action->io.surf_io);
 329   xbt_mallocator_release(simix_global->action_mallocator, action);
 330 }
 331
 332 void SIMIX_io_finish(smx_action_t action)
 333 {
 334   xbt_fifo_item_t item;
 335   smx_simcall_t simcall;
 336
 337   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 338
 339     switch (action->state) {
 340
 341       case SIMIX_DONE:
 342         /* do nothing, action done */
 343         break;
 344
 345       case SIMIX_FAILED:
 346         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 347         break;
 348
 349       case SIMIX_CANCELED:
 350         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 351         break;
 352
 353       default:
 354         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 355             (int)action->state);
 356     }
 357
 358     if (surf_workstation_model->extension.
 359         workstation.get_state(simcall->issuer->smx_host) != SURF_RESOURCE_ON) {
 360       simcall->issuer->context->iwannadie = 1;
 361     }
 362
 363     simcall->issuer->waiting_action = NULL;
 364     SIMIX_simcall_answer(simcall);
 365   }
 366
 367   /* We no longer need it */
 368   SIMIX_io_destroy(action);
 369 }