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)
 191 {
 192   return SIMIX_file_unlink(simcall->issuer, fd);
 193 }
 194
 195 int SIMIX_file_unlink(smx_process_t process, smx_file_t fd)
 196 {
 197   smx_host_t host = process->smx_host;
 198   /* check if the host is active */
 199   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
 200     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 201            sg_host_name(host));
 202   }
 203
 204   int res = surf_workstation_unlink(host, fd->surf_file);
 205   xbt_free(fd);
 206   return !!res;
 207 }
 208
 209 sg_size_t SIMIX_pre_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 210 {
 211   return SIMIX_file_get_size(simcall->issuer, fd);
 212 }
 213
 214 sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 215 {
 216   smx_host_t host = process->smx_host;
 217   return  surf_workstation_get_size(host, fd->surf_file);
 218 }
 219
 220 sg_size_t SIMIX_pre_file_tell(smx_simcall_t simcall, smx_file_t fd)
 221 {
 222   return SIMIX_file_tell(simcall->issuer, fd);
 223 }
 224
 225 sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd)
 226 {
 227   smx_host_t host = process->smx_host;
 228   return  surf_workstation_file_tell(host, fd->surf_file);
 229 }
 230
 231
 232 xbt_dynar_t SIMIX_pre_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 233 {
 234   return SIMIX_file_get_info(simcall->issuer, fd);
 235 }
 236
 237 xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd)
 238 {
 239   smx_host_t host = process->smx_host;
 240   return  surf_workstation_get_info(host, fd->surf_file);
 241 }
 242
 243 int SIMIX_pre_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 244 {
 245   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 246 }
 247
 248 int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin)
 249 {
 250   smx_host_t host = process->smx_host;
 251   return  surf_workstation_file_seek(host, fd->surf_file, offset, origin);
 252 }
 253
 254 int SIMIX_pre_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 255 {
 256   return SIMIX_file_move(simcall->issuer, file, fullpath);
 257 }
 258
 259 int SIMIX_file_move(smx_process_t process, smx_file_t file, const char* fullpath)
 260 {
 261   smx_host_t host = process->smx_host;
 262   return  surf_workstation_file_move(host, file->surf_file, fullpath);
 263 }
 264
 265 sg_size_t SIMIX_storage_get_size(smx_storage_t storage){
 266   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 267   return surf_storage_get_size(storage);
 268 }
 269
 270 sg_size_t SIMIX_pre_storage_get_free_size(smx_simcall_t simcall, smx_storage_t storage)
 271 {
 272   return SIMIX_storage_get_free_size(simcall->issuer, storage);
 273 }
 274
 275 sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage)
 276 {
 277   return  surf_storage_get_free_size(storage);
 278 }
 279
 280 sg_size_t SIMIX_pre_storage_get_used_size(smx_simcall_t simcall, smx_storage_t storage)
 281 {
 282   return SIMIX_storage_get_used_size(simcall->issuer, storage);
 283 }
 284
 285 sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage)
 286 {
 287   return  surf_storage_get_used_size(storage);
 288 }
 289
 290 xbt_dict_t SIMIX_pre_storage_get_properties(smx_simcall_t simcall, smx_storage_t storage){
 291   return SIMIX_storage_get_properties(storage);
 292 }
 293 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 294   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 295   return surf_resource_get_properties(surf_storage_resource_priv(storage));
 296 }
 297
 298 const char* SIMIX_pre_storage_get_name(smx_simcall_t simcall, smx_storage_t storage){
 299    return SIMIX_storage_get_name(storage);
 300 }
 301
 302 const char* SIMIX_storage_get_name(smx_storage_t storage){
 303   xbt_assert((storage != NULL), "Invalid parameters");
 304   return sg_storage_name(storage);
 305 }
 306
 307 xbt_dict_t SIMIX_pre_storage_get_content(smx_simcall_t simcall, smx_storage_t storage){
 308   return SIMIX_storage_get_content(storage);
 309 }
 310
 311 xbt_dict_t SIMIX_storage_get_content(smx_storage_t storage){
 312   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 313   return surf_storage_get_content(storage);
 314 }
 315
 316 const char* SIMIX_pre_storage_get_host(smx_simcall_t simcall, smx_storage_t storage){
 317    return SIMIX_storage_get_host(storage);
 318 }
 319
 320 const char* SIMIX_storage_get_host(smx_storage_t storage){
 321   xbt_assert((storage != NULL), "Invalid parameters");
 322   return surf_storage_get_host(storage);
 323 }
 324
 325 void SIMIX_post_io(smx_action_t action)
 326 {
 327   xbt_fifo_item_t i;
 328   smx_simcall_t simcall;
 329 //  char* key;
 330 //  xbt_dict_cursor_t cursor = NULL;
 331 //  s_file_stat_t *dst = NULL;
 332 //  s_file_stat_t *src = NULL;
 333
 334   xbt_fifo_foreach(action->simcalls,i,simcall,smx_simcall_t) {
 335     switch (simcall->call) {
 336     case SIMCALL_FILE_OPEN: {
 337       smx_file_t tmp = xbt_new(s_smx_file_t,1);
 338       tmp->surf_file = surf_storage_action_get_file(action->io.surf_io);
 339       simcall_file_open__set__result(simcall, tmp);
 340       break;
 341     }
 342     case SIMCALL_FILE_CLOSE:
 343       xbt_free(simcall_file_close__get__fd(simcall));
 344       simcall_file_close__set__result(simcall, 0);
 345       break;
 346     case SIMCALL_FILE_WRITE:
 347       simcall_file_write__set__result(simcall, surf_action_get_cost(action->io.surf_io));
 348       break;
 349
 350     case SIMCALL_FILE_READ:
 351       simcall_file_read__set__result(simcall, surf_action_get_cost(action->io.surf_io));
 352       break;
 353
 354     default:
 355       break;
 356     }
 357   }
 358
 359   switch (surf_action_get_state(action->io.surf_io)) {
 360
 361     case SURF_ACTION_FAILED:
 362       action->state = SIMIX_FAILED;
 363       break;
 364
 365     case SURF_ACTION_DONE:
 366       action->state = SIMIX_DONE;
 367       break;
 368
 369     default:
 370       THROW_IMPOSSIBLE;
 371       break;
 372   }
 373
 374   SIMIX_io_finish(action);
 375 }
 376
 377 void SIMIX_io_destroy(smx_action_t action)
 378 {
 379   XBT_DEBUG("Destroy action %p", action);
 380   if (action->io.surf_io)
 381     surf_action_unref(action->io.surf_io);
 382   xbt_mallocator_release(simix_global->action_mallocator, action);
 383 }
 384
 385 void SIMIX_io_finish(smx_action_t action)
 386 {
 387   xbt_fifo_item_t item;
 388   smx_simcall_t simcall;
 389
 390   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 391
 392     switch (action->state) {
 393
 394       case SIMIX_DONE:
 395         /* do nothing, action done */
 396         break;
 397
 398       case SIMIX_FAILED:
 399         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 400         break;
 401
 402       case SIMIX_CANCELED:
 403         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 404         break;
 405
 406       default:
 407         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 408             (int)action->state);
 409     }
 410
 411     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 412       simcall->issuer->context->iwannadie = 1;
 413     }
 414
 415     simcall->issuer->waiting_action = NULL;
 416     SIMIX_simcall_answer(simcall);
 417   }
 418
 419   /* We no longer need it */
 420   SIMIX_io_destroy(action);
 421 }