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 "xbt/sysdep.h"
   9 #include "xbt/log.h"
  10 #include "xbt/dict.h"
  11 #include "mc/mc.h"
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix,
  14                                 "Logging specific to SIMIX (io)");
  15
  16
  17 //SIMIX FILE READ
  18 void SIMIX_pre_file_read(smx_simcall_t simcall)
  19 {
  20   smx_action_t action = SIMIX_file_read(simcall->issuer,
  21       simcall->file_read.ptr,
  22       simcall->file_read.size,
  23       simcall->file_read.nmemb,
  24       simcall->file_read.stream);
  25   xbt_fifo_push(action->simcalls, simcall);
  26   simcall->issuer->waiting_action = action;
  27 }
  28
  29 smx_action_t SIMIX_file_read(smx_process_t process, void* ptr, size_t size, size_t nmemb, smx_file_t stream)
  30 {
  31   smx_action_t action;
  32   smx_host_t host = process->smx_host;
  33
  34   /* check if the host is active */
  35   if (surf_workstation_model->extension.
  36       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
  37     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  38            host->name);
  39   }
  40
  41   action = xbt_mallocator_get(simix_global->action_mallocator);
  42   action->type = SIMIX_ACTION_IO;
  43   action->name = NULL;
  44 #ifdef HAVE_TRACING
  45   action->category = NULL;
  46 #endif
  47
  48   action->io.host = host;
  49   action->io.surf_io = surf_workstation_model->extension.workstation.read(host->host, ptr, size, nmemb, stream->surf_file);
  50
  51   surf_workstation_model->action_data_set(action->io.surf_io, action);
  52   XBT_DEBUG("Create io action %p", action);
  53
  54   return action;
  55 }
  56
  57 //SIMIX FILE WRITE
  58 void SIMIX_pre_file_write(smx_simcall_t simcall)
  59 {
  60   smx_action_t action = SIMIX_file_write(simcall->issuer,
  61       simcall->file_write.ptr,
  62       simcall->file_write.size,
  63       simcall->file_write.nmemb,
  64       simcall->file_write.stream);
  65   xbt_fifo_push(action->simcalls, simcall);
  66   simcall->issuer->waiting_action = action;
  67 }
  68
  69 smx_action_t SIMIX_file_write(smx_process_t process, const void* ptr, size_t size, size_t nmemb, smx_file_t stream)
  70 {
  71   smx_action_t action;
  72   smx_host_t host = process->smx_host;
  73
  74   /* check if the host is active */
  75   if (surf_workstation_model->extension.
  76       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
  77     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  78            host->name);
  79   }
  80
  81   action = xbt_mallocator_get(simix_global->action_mallocator);
  82   action->type = SIMIX_ACTION_IO;
  83   action->name = NULL;
  84 #ifdef HAVE_TRACING
  85   action->category = NULL;
  86 #endif
  87
  88   action->io.host = host;
  89   action->io.surf_io = surf_workstation_model->extension.workstation.write(host->host, ptr, size, nmemb, stream->surf_file);
  90
  91   surf_workstation_model->action_data_set(action->io.surf_io, action);
  92   XBT_DEBUG("Create io action %p", action);
  93
  94   return action;
  95 }
  96
  97 //SIMIX FILE OPEN
  98 void SIMIX_pre_file_open(smx_simcall_t simcall)
  99 {
 100   smx_action_t action = SIMIX_file_open(simcall->issuer,
 101       simcall->file_open.mount,
 102       simcall->file_open.path,
 103       simcall->file_open.mode);
 104   xbt_fifo_push(action->simcalls, simcall);
 105   simcall->issuer->waiting_action = action;
 106 }
 107
 108 smx_action_t SIMIX_file_open(smx_process_t process ,const char* mount, const char* path, const char* mode)
 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->host) != SURF_RESOURCE_ON) {
 116     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 117            host->name);
 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 = surf_workstation_model->extension.workstation.open(host->host, mount, path, mode);
 129
 130   surf_workstation_model->action_data_set(action->io.surf_io, action);
 131   XBT_DEBUG("Create io action %p", action);
 132
 133   return action;
 134 }
 135
 136 //SIMIX FILE CLOSE
 137 void SIMIX_pre_file_close(smx_simcall_t simcall)
 138 {
 139   smx_action_t action = SIMIX_file_close(simcall->issuer,
 140       simcall->file_close.fp);
 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 fp)
 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->host) != SURF_RESOURCE_ON) {
 153     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 154            host->name);
 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->host, fp->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 //SIMIX FILE STAT
 174 void SIMIX_pre_file_stat(smx_simcall_t simcall)
 175 {
 176   smx_action_t action = SIMIX_file_stat(simcall->issuer,
 177       simcall->file_stat.fd,
 178       simcall->file_stat.buf);
 179   xbt_fifo_push(action->simcalls, simcall);
 180   simcall->issuer->waiting_action = action;
 181 }
 182
 183 smx_action_t SIMIX_file_stat(smx_process_t process, smx_file_t fd, s_file_stat_t buf)
 184 {
 185   smx_action_t action;
 186   smx_host_t host = process->smx_host;
 187   /* check if the host is active */
 188   if (surf_workstation_model->extension.
 189       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 190     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 191            host->name);
 192   }
 193
 194   action = xbt_mallocator_get(simix_global->action_mallocator);
 195   action->type = SIMIX_ACTION_IO;
 196   action->name = NULL;
 197 #ifdef HAVE_TRACING
 198   action->category = NULL;
 199 #endif
 200
 201   action->io.host = host;
 202   action->io.surf_io = surf_workstation_model->extension.workstation.stat(host->host, fd->surf_file);
 203
 204   surf_workstation_model->action_data_set(action->io.surf_io, action);
 205   XBT_DEBUG("Create io action %p", action);
 206
 207   return action;
 208 }
 209
 210 //SIMIX FILE UNLINK
 211 void SIMIX_pre_file_unlink(smx_simcall_t simcall)
 212 {
 213   smx_action_t action = SIMIX_file_unlink(simcall->issuer,
 214       simcall->file_unlink.fd);
 215   xbt_fifo_push(action->simcalls, simcall);
 216   simcall->issuer->waiting_action = action;
 217 }
 218
 219 smx_action_t SIMIX_file_unlink(smx_process_t process, smx_file_t fd)
 220 {
 221   smx_action_t action;
 222   smx_host_t host = process->smx_host;
 223   /* check if the host is active */
 224   if (surf_workstation_model->extension.
 225       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 226     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 227            host->name);
 228   }
 229
 230   action = xbt_mallocator_get(simix_global->action_mallocator);
 231   action->type = SIMIX_ACTION_IO;
 232   action->name = NULL;
 233 #ifdef HAVE_TRACING
 234   action->category = NULL;
 235 #endif
 236
 237   action->io.host = host;
 238   action->io.surf_io = surf_workstation_model->extension.workstation.unlink(host->host, fd->surf_file);
 239
 240   surf_workstation_model->action_data_set(action->io.surf_io, action);
 241   XBT_DEBUG("Create io action %p", action);
 242
 243   return action;
 244 }
 245
 246 //SIMIX FILE LS
 247 void SIMIX_pre_file_ls(smx_simcall_t simcall)
 248 {
 249   smx_action_t action = SIMIX_file_ls(simcall->issuer,
 250       simcall->file_ls.mount, simcall->file_ls.path);
 251   xbt_fifo_push(action->simcalls, simcall);
 252   simcall->issuer->waiting_action = action;
 253 }
 254 smx_action_t SIMIX_file_ls(smx_process_t process, const char* mount, const char *path)
 255 {
 256   smx_action_t action;
 257   smx_host_t host = process->smx_host;
 258   /* check if the host is active */
 259   if (surf_workstation_model->extension.workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 260     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 261            host->name);
 262   }
 263
 264   action = xbt_mallocator_get(simix_global->action_mallocator);
 265   action->type = SIMIX_ACTION_IO;
 266   action->name = NULL;
 267 #ifdef HAVE_TRACING
 268   action->category = NULL;
 269 #endif
 270
 271   action->io.host = host;
 272   action->io.surf_io = surf_workstation_model->extension.workstation.ls(host->host,mount,path);
 273
 274   surf_workstation_model->action_data_set(action->io.surf_io, action);
 275   XBT_DEBUG("Create io action %p", action);
 276   return action;
 277 }
 278
 279 static void free_file_stat(void *p)
 280 {
 281   file_stat_t fs = p;
 282   xbt_free(fs->date);
 283   xbt_free(fs->group);
 284   xbt_free(fs->time);
 285   xbt_free(fs->user);
 286   xbt_free(fs->user_rights);
 287   xbt_free(fs);
 288 }
 289
 290 void SIMIX_post_io(smx_action_t action)
 291 {
 292   xbt_fifo_item_t i;
 293   smx_simcall_t simcall;
 294   char* key;
 295   xbt_dict_cursor_t cursor = NULL;
 296   s_file_stat_t *dst = NULL;
 297   s_file_stat_t *src = NULL;
 298
 299   xbt_fifo_foreach(action->simcalls,i,simcall,smx_simcall_t) {
 300     switch (simcall->call) {
 301     case SIMCALL_FILE_OPEN:
 302       simcall->file_open.result = xbt_new(s_smx_file_t,1);
 303       simcall->file_open.result->surf_file = (action->io.surf_io)->file;
 304       break;
 305
 306     case SIMCALL_FILE_CLOSE:
 307       xbt_free(simcall->file_close.fp);
 308       simcall->file_close.result = 0;
 309       break;
 310
 311     case SIMCALL_FILE_WRITE:
 312       simcall->file_write.result = (action->io.surf_io)->cost;
 313       break;
 314
 315     case SIMCALL_FILE_READ:
 316       simcall->file_read.result = (action->io.surf_io)->cost;
 317       break;
 318
 319     case SIMCALL_FILE_STAT:
 320       simcall->file_stat.result = 0;
 321       dst = &(simcall->file_stat.buf);
 322       src = &((action->io.surf_io)->stat);
 323       file_stat_copy(src,dst);
 324       break;
 325
 326     case SIMCALL_FILE_UNLINK:
 327       xbt_free(simcall->file_unlink.fd);
 328       simcall->file_unlink.result = 0;
 329       break;
 330
 331     case SIMCALL_FILE_LS:
 332       xbt_dict_foreach((action->io.surf_io)->ls_dict,cursor,key, src){
 333         // if there is a stat we have to duplicate it
 334         if(src){
 335           dst = xbt_new0(s_file_stat_t,1);
 336           file_stat_copy(src, dst);
 337           xbt_dict_set((action->io.surf_io)->ls_dict,key,dst,free_file_stat);
 338         }
 339       }
 340       simcall->file_ls.result = (action->io.surf_io)->ls_dict;
 341       break;
 342
 343     default:
 344       break;
 345     }
 346   }
 347
 348   switch (surf_workstation_model->action_state_get(action->io.surf_io)) {
 349
 350     case SURF_ACTION_FAILED:
 351       action->state = SIMIX_FAILED;
 352       break;
 353
 354     case SURF_ACTION_DONE:
 355       action->state = SIMIX_DONE;
 356       break;
 357
 358     default:
 359       THROW_IMPOSSIBLE;
 360       break;
 361   }
 362
 363   SIMIX_io_finish(action);
 364 }
 365
 366 void SIMIX_io_destroy(smx_action_t action)
 367 {
 368   XBT_DEBUG("Destroy action %p", action);
 369   if (action->io.surf_io)
 370     action->io.surf_io->model_type->action_unref(action->io.surf_io);
 371   xbt_mallocator_release(simix_global->action_mallocator, action);
 372 }
 373
 374 void SIMIX_io_finish(smx_action_t action)
 375 {
 376   xbt_fifo_item_t item;
 377   smx_simcall_t simcall;
 378
 379   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 380
 381     switch (action->state) {
 382
 383       case SIMIX_DONE:
 384         /* do nothing, action done */
 385         break;
 386
 387       case SIMIX_FAILED:
 388         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 389         break;
 390
 391       case SIMIX_CANCELED:
 392         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 393         break;
 394
 395       default:
 396         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 397             (int)action->state);
 398     }
 399
 400     if (surf_workstation_model->extension.
 401         workstation.get_state(simcall->issuer->smx_host->host) != SURF_RESOURCE_ON) {
 402       simcall->issuer->context->iwannadie = 1;
 403     }
 404
 405     simcall->issuer->waiting_action = NULL;
 406     SIMIX_simcall_answer(simcall);
 407   }
 408
 409   /* We no longer need it */
 410   SIMIX_io_destroy(action);
 411 }