src/simix/smx_io.c

   1 /* Copyright (c) 2007-2010, 2012-2014. 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 /**
  19  * \brief Internal function to create a SIMIX storage.
  20  * \param name name of the storage to create
  21  * \param storage the SURF storage to encapsulate
  22  * \param data some user data (may be NULL)
  23  */
  24 smx_storage_t SIMIX_storage_create(const char *name, void *storage, void *data)
  25 {
  26   smx_storage_priv_t smx_storage = xbt_new0(s_smx_storage_priv_t, 1);
  27
  28   smx_storage->data = data;
  29
  30   /* Update global variables */
  31   xbt_lib_set(storage_lib,name,SIMIX_STORAGE_LEVEL,smx_storage);
  32   return xbt_lib_get_elm_or_null(storage_lib, name);
  33 }
  34
  35 /**
  36  * \brief Internal function to destroy a SIMIX storage.
  37  *
  38  * \param s the host to destroy (a smx_storage_t)
  39  */
  40 void SIMIX_storage_destroy(void *s)
  41 {
  42   smx_storage_priv_t storage = (smx_storage_priv_t) s;
  43
  44   xbt_assert((storage != NULL), "Invalid parameters");
  45   if (storage->data)
  46     free(storage->data);
  47
  48   /* Clean storage structure */
  49   free(storage);
  50 }
  51
  52 //SIMIX FILE READ
  53 void SIMIX_pre_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, smx_host_t host)
  54 {
  55   smx_action_t action = SIMIX_file_read(simcall->issuer, fd, size, host);
  56   xbt_fifo_push(action->simcalls, simcall);
  57   simcall->issuer->waiting_action = action;
  58 }
  59
  60 smx_action_t SIMIX_file_read(smx_process_t process, smx_file_t fd, sg_size_t size, smx_host_t host)
  61 {
  62   smx_action_t action;
  63
  64   /* check if the host is active */
  65   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
  66     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  67            sg_host_name(host));
  68   }
  69
  70   action = xbt_mallocator_get(simix_global->action_mallocator);
  71   action->type = SIMIX_ACTION_IO;
  72   action->name = NULL;
  73 #ifdef HAVE_TRACING
  74   action->category = NULL;
  75 #endif
  76
  77   action->io.host = host;
  78   action->io.surf_io = surf_workstation_read(host, fd->surf_file, size);
  79
  80   surf_action_set_data(action->io.surf_io, action);
  81   XBT_DEBUG("Create io action %p", action);
  82
  83   return action;
  84 }
  85
  86 //SIMIX FILE WRITE
  87 void SIMIX_pre_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, smx_host_t host)
  88 {
  89   smx_action_t action = SIMIX_file_write(simcall->issuer, fd,  size, host);
  90   xbt_fifo_push(action->simcalls, simcall);
  91   simcall->issuer->waiting_action = action;
  92 }
  93
  94 smx_action_t SIMIX_file_write(smx_process_t process, smx_file_t fd, sg_size_t size, smx_host_t host)
  95 {
  96   smx_action_t action;
  97
  98   /* check if the host is active */
  99   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
 100     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 101            sg_host_name(host));
 102   }
 103
 104   action = xbt_mallocator_get(simix_global->action_mallocator);
 105   action->type = SIMIX_ACTION_IO;
 106   action->name = NULL;
 107 #ifdef HAVE_TRACING
 108   action->category = NULL;
 109 #endif
 110
 111   action->io.host = host;
 112   action->io.surf_io = surf_workstation_write(host, fd->surf_file, size);
 113
 114   surf_action_set_data(action->io.surf_io, action);
 115   XBT_DEBUG("Create io action %p", action);
 116
 117   return action;
 118 }
 119
 120 //SIMIX FILE OPEN
 121 void SIMIX_pre_file_open(smx_simcall_t simcall, const char* fullpath, smx_host_t host)
 122 {
 123   smx_action_t action = SIMIX_file_open(simcall->issuer, fullpath, host);
 124   xbt_fifo_push(action->simcalls, simcall);
 125   simcall->issuer->waiting_action = action;
 126 }
 127
 128 smx_action_t SIMIX_file_open(smx_process_t process, const char* fullpath, smx_host_t host)
 129 {
 130   smx_action_t action;
 131
 132   /* check if the host is active */
 133   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
 134     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 135            sg_host_name(host));
 136   }
 137
 138   action = xbt_mallocator_get(simix_global->action_mallocator);
 139   action->type = SIMIX_ACTION_IO;
 140   action->name = NULL;
 141 #ifdef HAVE_TRACING
 142   action->category = NULL;
 143 #endif
 144
 145   action->io.host = host;
 146   action->io.surf_io = surf_workstation_open(host, fullpath);
 147
 148   surf_action_set_data(action->io.surf_io, action);
 149   XBT_DEBUG("Create io action %p", action);
 150
 151   return action;
 152 }
 153
 154 //SIMIX FILE CLOSE
 155 void SIMIX_pre_file_close(smx_simcall_t simcall, smx_file_t fd, smx_host_t host)
 156 {
 157   smx_action_t action = SIMIX_file_close(simcall->issuer, fd, host);
 158   xbt_fifo_push(action->simcalls, simcall);
 159   simcall->issuer->waiting_action = action;
 160 }
 161
 162 smx_action_t SIMIX_file_close(smx_process_t process, smx_file_t fd, smx_host_t host)
 163 {
 164   smx_action_t action;
 165
 166   /* check if the host is active */
 167   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
 168     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 169            sg_host_name(host));
 170   }
 171
 172   action = xbt_mallocator_get(simix_global->action_mallocator);
 173   action->type = SIMIX_ACTION_IO;
 174   action->name = NULL;
 175 #ifdef HAVE_TRACING
 176   action->category = NULL;
 177 #endif
 178
 179   action->io.host = host;
 180   action->io.surf_io = surf_workstation_close(host, fd->surf_file);
 181
 182   surf_action_set_data(action->io.surf_io, action);
 183   XBT_DEBUG("Create io action %p", action);
 184
 185   return action;
 186 }
 187
 188
 189 //SIMIX FILE UNLINK
 190 int SIMIX_pre_file_unlink(smx_simcall_t simcall, smx_file_t fd, smx_host_t host)
 191 {
 192   return SIMIX_file_unlink(simcall->issuer, fd, host);
 193 }
 194
 195 int SIMIX_file_unlink(smx_process_t process, smx_file_t fd, smx_host_t host)
 196 {
 197   /* check if the host is active */
 198   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
 199     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 200            sg_host_name(host));
 201   }
 202
 203   int res = surf_workstation_unlink(host, fd->surf_file);
 204   xbt_free(fd);
 205   return !!res;
 206 }
 207
 208 sg_size_t SIMIX_pre_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 209 {
 210   return SIMIX_file_get_size(simcall->issuer, fd);
 211 }
 212
 213 sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 214 {
 215   smx_host_t host = process->smx_host;
 216   return  surf_workstation_get_size(host, fd->surf_file);
 217 }
 218
 219 sg_size_t SIMIX_pre_file_tell(smx_simcall_t simcall, smx_file_t fd)
 220 {
 221   return SIMIX_file_tell(simcall->issuer, fd);
 222 }
 223
 224 sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd)
 225 {
 226   smx_host_t host = process->smx_host;
 227   return  surf_workstation_file_tell(host, fd->surf_file);
 228 }
 229
 230
 231 xbt_dynar_t SIMIX_pre_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 232 {
 233   return SIMIX_file_get_info(simcall->issuer, fd);
 234 }
 235
 236 xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd)
 237 {
 238   smx_host_t host = process->smx_host;
 239   return  surf_workstation_get_info(host, fd->surf_file);
 240 }
 241
 242 int SIMIX_pre_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 243 {
 244   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 245 }
 246
 247 int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin)
 248 {
 249   smx_host_t host = process->smx_host;
 250   return  surf_workstation_file_seek(host, fd->surf_file, offset, origin);
 251 }
 252
 253 int SIMIX_pre_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 254 {
 255   return SIMIX_file_move(simcall->issuer, file, fullpath);
 256 }
 257
 258 int SIMIX_file_move(smx_process_t process, smx_file_t file, const char* fullpath)
 259 {
 260   smx_host_t host = process->smx_host;
 261   return  surf_workstation_file_move(host, file->surf_file, fullpath);
 262 }
 263
 264 sg_size_t SIMIX_storage_get_size(smx_storage_t storage){
 265   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 266   return surf_storage_get_size(storage);
 267 }
 268
 269 sg_size_t SIMIX_pre_storage_get_free_size(smx_simcall_t simcall, smx_storage_t storage)
 270 {
 271   return SIMIX_storage_get_free_size(simcall->issuer, storage);
 272 }
 273
 274 sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage)
 275 {
 276   return  surf_storage_get_free_size(storage);
 277 }
 278
 279 sg_size_t SIMIX_pre_storage_get_used_size(smx_simcall_t simcall, smx_storage_t storage)
 280 {
 281   return SIMIX_storage_get_used_size(simcall->issuer, storage);
 282 }
 283
 284 sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage)
 285 {
 286   return  surf_storage_get_used_size(storage);
 287 }
 288
 289 xbt_dict_t SIMIX_pre_storage_get_properties(smx_simcall_t simcall, smx_storage_t storage){
 290   return SIMIX_storage_get_properties(storage);
 291 }
 292 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 293   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 294   return surf_resource_get_properties(surf_storage_resource_priv(storage));
 295 }
 296
 297 const char* SIMIX_pre_storage_get_name(smx_simcall_t simcall, smx_storage_t storage){
 298    return SIMIX_storage_get_name(storage);
 299 }
 300
 301 const char* SIMIX_storage_get_name(smx_storage_t storage){
 302   xbt_assert((storage != NULL), "Invalid parameters");
 303   return sg_storage_name(storage);
 304 }
 305
 306 xbt_dict_t SIMIX_pre_storage_get_content(smx_simcall_t simcall, smx_storage_t storage){
 307   return SIMIX_storage_get_content(storage);
 308 }
 309
 310 xbt_dict_t SIMIX_storage_get_content(smx_storage_t storage){
 311   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 312   return surf_storage_get_content(storage);
 313 }
 314
 315 const char* SIMIX_pre_storage_get_host(smx_simcall_t simcall, smx_storage_t storage){
 316    return SIMIX_storage_get_host(storage);
 317 }
 318
 319 const char* SIMIX_storage_get_host(smx_storage_t storage){
 320   xbt_assert((storage != NULL), "Invalid parameters");
 321   return surf_storage_get_host(storage);
 322 }
 323
 324 void SIMIX_post_io(smx_action_t action)
 325 {
 326   xbt_fifo_item_t i;
 327   smx_simcall_t simcall;
 328 //  char* key;
 329 //  xbt_dict_cursor_t cursor = NULL;
 330 //  s_file_stat_t *dst = NULL;
 331 //  s_file_stat_t *src = NULL;
 332
 333   xbt_fifo_foreach(action->simcalls,i,simcall,smx_simcall_t) {
 334     switch (simcall->call) {
 335     case SIMCALL_FILE_OPEN: {
 336       smx_file_t tmp = xbt_new(s_smx_file_t,1);
 337       tmp->surf_file = surf_storage_action_get_file(action->io.surf_io);
 338       simcall_file_open__set__result(simcall, tmp);
 339       break;
 340     }
 341     case SIMCALL_FILE_CLOSE:
 342       xbt_free(simcall_file_close__get__fd(simcall));
 343       simcall_file_close__set__result(simcall, 0);
 344       break;
 345     case SIMCALL_FILE_WRITE:
 346       simcall_file_write__set__result(simcall, surf_action_get_cost(action->io.surf_io));
 347       break;
 348
 349     case SIMCALL_FILE_READ:
 350       simcall_file_read__set__result(simcall, surf_action_get_cost(action->io.surf_io));
 351       break;
 352
 353     default:
 354       break;
 355     }
 356   }
 357
 358   switch (surf_action_get_state(action->io.surf_io)) {
 359
 360     case SURF_ACTION_FAILED:
 361       action->state = SIMIX_FAILED;
 362       break;
 363
 364     case SURF_ACTION_DONE:
 365       action->state = SIMIX_DONE;
 366       break;
 367
 368     default:
 369       THROW_IMPOSSIBLE;
 370       break;
 371   }
 372
 373   SIMIX_io_finish(action);
 374 }
 375
 376 void SIMIX_io_destroy(smx_action_t action)
 377 {
 378   XBT_DEBUG("Destroy action %p", action);
 379   if (action->io.surf_io)
 380     surf_action_unref(action->io.surf_io);
 381   xbt_mallocator_release(simix_global->action_mallocator, action);
 382 }
 383
 384 void SIMIX_io_finish(smx_action_t action)
 385 {
 386   xbt_fifo_item_t item;
 387   smx_simcall_t simcall;
 388
 389   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 390
 391     switch (action->state) {
 392
 393       case SIMIX_DONE:
 394         /* do nothing, action done */
 395         break;
 396
 397       case SIMIX_FAILED:
 398         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 399         break;
 400
 401       case SIMIX_CANCELED:
 402         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 403         break;
 404
 405       default:
 406         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 407             (int)action->state);
 408     }
 409
 410     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 411       simcall->issuer->context->iwannadie = 1;
 412     }
 413
 414     simcall->issuer->waiting_action = NULL;
 415     SIMIX_simcall_answer(simcall);
 416   }
 417
 418   /* We no longer need it */
 419   SIMIX_io_destroy(action);
 420 }