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, size_t size,
  20                         smx_file_t fd)
  21 {
  22   smx_action_t action = SIMIX_file_read(simcall->issuer, size, 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, size_t size,
  28                              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, size,
  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, size_t size,
  60                           smx_file_t fd)
  61 {
  62   smx_action_t action = SIMIX_file_write(simcall->issuer, size, 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,
  68                               size_t size, 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, size,
  90                                                           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 int SIMIX_pre_file_unlink(smx_simcall_t simcall, smx_file_t fd)
 176 {
 177   return SIMIX_file_unlink(simcall->issuer, fd);
 178 }
 179
 180 int SIMIX_file_unlink(smx_process_t process, smx_file_t fd)
 181 {
 182   smx_host_t host = process->smx_host;
 183   /* check if the host is active */
 184   if (surf_workstation_model->extension.
 185       workstation.get_state(host) != SURF_RESOURCE_ON) {
 186     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 187            sg_host_name(host));
 188   }
 189
 190   if (surf_workstation_model->extension.workstation.unlink(host, fd->surf_file)){
 191     fd->surf_file = NULL;
 192     return 1;
 193   } else
 194     return 0;
 195 }
 196
 197 //SIMIX FILE LS
 198 void SIMIX_pre_file_ls(smx_simcall_t simcall,
 199                        const char* mount, const char* path)
 200 {
 201   smx_action_t action = SIMIX_file_ls(simcall->issuer, mount, path);
 202   xbt_fifo_push(action->simcalls, simcall);
 203   simcall->issuer->waiting_action = action;
 204 }
 205 smx_action_t SIMIX_file_ls(smx_process_t process, const char* mount, const char *path)
 206 {
 207   smx_action_t action;
 208   smx_host_t host = process->smx_host;
 209   /* check if the host is active */
 210   if (surf_workstation_model->extension.workstation.get_state(host) != SURF_RESOURCE_ON) {
 211     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 212            sg_host_name(host));
 213   }
 214
 215   action = xbt_mallocator_get(simix_global->action_mallocator);
 216   action->type = SIMIX_ACTION_IO;
 217   action->name = NULL;
 218 #ifdef HAVE_TRACING
 219   action->category = NULL;
 220 #endif
 221
 222   action->io.host = host;
 223   action->io.surf_io = surf_workstation_model->extension.workstation.ls(host,mount,path);
 224
 225   surf_workstation_model->action_data_set(action->io.surf_io, action);
 226   XBT_DEBUG("Create io action %p", action);
 227   return action;
 228 }
 229
 230 size_t SIMIX_pre_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 231 {
 232   return SIMIX_file_get_size(simcall->issuer, fd);
 233 }
 234
 235 size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 236 {
 237   smx_host_t host = process->smx_host;
 238   return  surf_workstation_model->extension.workstation.get_size(host,
 239       fd->surf_file);
 240 }
 241
 242
 243 void SIMIX_post_io(smx_action_t action)
 244 {
 245   xbt_fifo_item_t i;
 246   smx_simcall_t simcall;
 247 //  char* key;
 248 //  xbt_dict_cursor_t cursor = NULL;
 249 //  s_file_stat_t *dst = NULL;
 250 //  s_file_stat_t *src = NULL;
 251
 252   xbt_fifo_foreach(action->simcalls,i,simcall,smx_simcall_t) {
 253     switch (simcall->call) {
 254     case SIMCALL_FILE_OPEN:;
 255       smx_file_t tmp = xbt_new(s_smx_file_t,1);
 256       tmp->surf_file = (action->io.surf_io)->file;
 257       simcall_file_open__set__result(simcall, tmp);
 258       break;
 259
 260     case SIMCALL_FILE_CLOSE:
 261       xbt_free(simcall_file_close__get__fd(simcall));
 262       simcall_file_close__set__result(simcall, 0);
 263       break;
 264
 265     case SIMCALL_FILE_WRITE:
 266       simcall_file_write__set__result(simcall, (action->io.surf_io)->cost);
 267       break;
 268
 269     case SIMCALL_FILE_READ:
 270       simcall_file_read__set__result(simcall, (action->io.surf_io)->cost);
 271       break;
 272
 273     case SIMCALL_FILE_LS:
 274 //      xbt_dict_foreach((action->io.surf_io)->ls_dict,cursor,key, src){
 275 //        // if there is a stat we have to duplicate it
 276 //        if(src){
 277 //          dst = xbt_new0(s_file_stat_t,1);
 278 //          file_stat_copy(src, dst);
 279 //          xbt_dict_set((action->io.surf_io)->ls_dict,key,dst,xbt_free);
 280 //        }
 281 //      }
 282       simcall_file_ls__set__result(simcall, (action->io.surf_io)->ls_dict);
 283       break;
 284     default:
 285       break;
 286     }
 287   }
 288
 289   switch (surf_workstation_model->action_state_get(action->io.surf_io)) {
 290
 291     case SURF_ACTION_FAILED:
 292       action->state = SIMIX_FAILED;
 293       break;
 294
 295     case SURF_ACTION_DONE:
 296       action->state = SIMIX_DONE;
 297       break;
 298
 299     default:
 300       THROW_IMPOSSIBLE;
 301       break;
 302   }
 303
 304   SIMIX_io_finish(action);
 305 }
 306
 307 void SIMIX_io_destroy(smx_action_t action)
 308 {
 309   XBT_DEBUG("Destroy action %p", action);
 310   if (action->io.surf_io)
 311     action->io.surf_io->model_type->action_unref(action->io.surf_io);
 312   xbt_mallocator_release(simix_global->action_mallocator, action);
 313 }
 314
 315 void SIMIX_io_finish(smx_action_t action)
 316 {
 317   xbt_fifo_item_t item;
 318   smx_simcall_t simcall;
 319
 320   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 321
 322     switch (action->state) {
 323
 324       case SIMIX_DONE:
 325         /* do nothing, action done */
 326         break;
 327
 328       case SIMIX_FAILED:
 329         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 330         break;
 331
 332       case SIMIX_CANCELED:
 333         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 334         break;
 335
 336       default:
 337         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 338             (int)action->state);
 339     }
 340
 341     if (surf_workstation_model->extension.
 342         workstation.get_state(simcall->issuer->smx_host) != SURF_RESOURCE_ON) {
 343       simcall->issuer->context->iwannadie = 1;
 344     }
 345
 346     simcall->issuer->waiting_action = NULL;
 347     SIMIX_simcall_answer(simcall);
 348   }
 349
 350   /* We no longer need it */
 351   SIMIX_io_destroy(action);
 352 }