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 simcall_HANDLER_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, smx_host_t host)
  54 {
  55   smx_synchro_t synchro = SIMIX_file_read(fd, size, host);
  56   xbt_fifo_push(synchro->simcalls, simcall);
  57   simcall->issuer->waiting_synchro = synchro;
  58 }
  59
  60 smx_synchro_t SIMIX_file_read(smx_file_t fd, sg_size_t size, smx_host_t host)
  61 {
  62   smx_synchro_t synchro;
  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   synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
  71   synchro->type = SIMIX_SYNC_IO;
  72   synchro->name = NULL;
  73   synchro->category = NULL;
  74
  75   synchro->io.host = host;
  76   synchro->io.surf_io = surf_workstation_read(host, fd->surf_file, size);
  77
  78   surf_action_set_data(synchro->io.surf_io, synchro);
  79   XBT_DEBUG("Create io synchro %p", synchro);
  80
  81   return synchro;
  82 }
  83
  84 //SIMIX FILE WRITE
  85 void simcall_HANDLER_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, smx_host_t host)
  86 {
  87   smx_synchro_t synchro = SIMIX_file_write(fd,  size, host);
  88   xbt_fifo_push(synchro->simcalls, simcall);
  89   simcall->issuer->waiting_synchro = synchro;
  90 }
  91
  92 smx_synchro_t SIMIX_file_write(smx_file_t fd, sg_size_t size, smx_host_t host)
  93 {
  94   smx_synchro_t synchro;
  95
  96   /* check if the host is active */
  97   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
  98     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  99            sg_host_name(host));
 100   }
 101
 102   synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 103   synchro->type = SIMIX_SYNC_IO;
 104   synchro->name = NULL;
 105   synchro->category = NULL;
 106
 107   synchro->io.host = host;
 108   synchro->io.surf_io = surf_workstation_write(host, fd->surf_file, size);
 109
 110   surf_action_set_data(synchro->io.surf_io, synchro);
 111   XBT_DEBUG("Create io synchro %p", synchro);
 112
 113   return synchro;
 114 }
 115
 116 //SIMIX FILE OPEN
 117 void simcall_HANDLER_file_open(smx_simcall_t simcall, const char* fullpath, smx_host_t host)
 118 {
 119   smx_synchro_t synchro = SIMIX_file_open(fullpath, host);
 120   xbt_fifo_push(synchro->simcalls, simcall);
 121   simcall->issuer->waiting_synchro = synchro;
 122 }
 123
 124 smx_synchro_t SIMIX_file_open(const char* fullpath, smx_host_t host)
 125 {
 126   smx_synchro_t synchro;
 127
 128   /* check if the host is active */
 129   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
 130     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 131            sg_host_name(host));
 132   }
 133
 134   synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 135   synchro->type = SIMIX_SYNC_IO;
 136   synchro->name = NULL;
 137   synchro->category = NULL;
 138
 139   synchro->io.host = host;
 140   synchro->io.surf_io = surf_workstation_open(host, fullpath);
 141
 142   surf_action_set_data(synchro->io.surf_io, synchro);
 143   XBT_DEBUG("Create io synchro %p", synchro);
 144
 145   return synchro;
 146 }
 147
 148 //SIMIX FILE CLOSE
 149 void simcall_HANDLER_file_close(smx_simcall_t simcall, smx_file_t fd, smx_host_t host)
 150 {
 151   smx_synchro_t synchro = SIMIX_file_close(fd, host);
 152   xbt_fifo_push(synchro->simcalls, simcall);
 153   simcall->issuer->waiting_synchro = synchro;
 154 }
 155
 156 smx_synchro_t SIMIX_file_close(smx_file_t fd, smx_host_t host)
 157 {
 158   smx_synchro_t synchro;
 159
 160   /* check if the host is active */
 161   if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
 162     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 163            sg_host_name(host));
 164   }
 165
 166   synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 167   synchro->type = SIMIX_SYNC_IO;
 168   synchro->name = NULL;
 169   synchro->category = NULL;
 170
 171   synchro->io.host = host;
 172   synchro->io.surf_io = surf_workstation_close(host, fd->surf_file);
 173
 174   surf_action_set_data(synchro->io.surf_io, synchro);
 175   XBT_DEBUG("Create io synchro %p", synchro);
 176
 177   return synchro;
 178 }
 179
 180
 181 //SIMIX FILE UNLINK
 182 int SIMIX_file_unlink(smx_file_t fd, smx_host_t host)
 183 {
 184   /* check if the host is active */
 185   if (surf_resource_get_state(surf_workstation_resource_priv(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   int res = surf_workstation_unlink(host, fd->surf_file);
 191   xbt_free(fd);
 192   return !!res;
 193 }
 194
 195 sg_size_t simcall_HANDLER_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 196 {
 197   return SIMIX_file_get_size(simcall->issuer, fd);
 198 }
 199
 200 sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 201 {
 202   smx_host_t host = process->smx_host;
 203   return  surf_workstation_get_size(host, fd->surf_file);
 204 }
 205
 206 sg_size_t simcall_HANDLER_file_tell(smx_simcall_t simcall, smx_file_t fd)
 207 {
 208   return SIMIX_file_tell(simcall->issuer, fd);
 209 }
 210
 211 sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd)
 212 {
 213   smx_host_t host = process->smx_host;
 214   return  surf_workstation_file_tell(host, fd->surf_file);
 215 }
 216
 217
 218 xbt_dynar_t simcall_HANDLER_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 219 {
 220   return SIMIX_file_get_info(simcall->issuer, fd);
 221 }
 222
 223 xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd)
 224 {
 225   smx_host_t host = process->smx_host;
 226   return  surf_workstation_get_info(host, fd->surf_file);
 227 }
 228
 229 int simcall_HANDLER_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 230 {
 231   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 232 }
 233
 234 int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin)
 235 {
 236   smx_host_t host = process->smx_host;
 237   return  surf_workstation_file_seek(host, fd->surf_file, offset, origin);
 238 }
 239
 240 int simcall_HANDLER_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 241 {
 242   return SIMIX_file_move(simcall->issuer, file, fullpath);
 243 }
 244
 245 int SIMIX_file_move(smx_process_t process, smx_file_t file, const char* fullpath)
 246 {
 247   smx_host_t host = process->smx_host;
 248   return  surf_workstation_file_move(host, file->surf_file, fullpath);
 249 }
 250
 251 sg_size_t SIMIX_storage_get_size(smx_storage_t storage){
 252   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 253   return surf_storage_get_size(storage);
 254 }
 255
 256 sg_size_t simcall_HANDLER_storage_get_free_size(smx_simcall_t simcall, smx_storage_t storage)
 257 {
 258   return SIMIX_storage_get_free_size(simcall->issuer, storage);
 259 }
 260
 261 sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage)
 262 {
 263   return  surf_storage_get_free_size(storage);
 264 }
 265
 266 sg_size_t simcall_HANDLER_storage_get_used_size(smx_simcall_t simcall, smx_storage_t storage)
 267 {
 268   return SIMIX_storage_get_used_size(simcall->issuer, storage);
 269 }
 270
 271 sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage)
 272 {
 273   return  surf_storage_get_used_size(storage);
 274 }
 275
 276 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 277   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 278   return surf_resource_get_properties(surf_storage_resource_priv(storage));
 279 }
 280
 281 const char* SIMIX_storage_get_name(smx_storage_t storage){
 282   xbt_assert((storage != NULL), "Invalid parameters");
 283   return sg_storage_name(storage);
 284 }
 285
 286 xbt_dict_t SIMIX_storage_get_content(smx_storage_t storage){
 287   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 288   return surf_storage_get_content(storage);
 289 }
 290
 291 const char* SIMIX_storage_get_host(smx_storage_t storage){
 292   xbt_assert((storage != NULL), "Invalid parameters");
 293   return surf_storage_get_host(storage);
 294 }
 295
 296 void SIMIX_post_io(smx_synchro_t synchro)
 297 {
 298   xbt_fifo_item_t i;
 299   smx_simcall_t simcall;
 300
 301   xbt_fifo_foreach(synchro->simcalls,i,simcall,smx_simcall_t) {
 302     switch (simcall->call) {
 303     case SIMCALL_FILE_OPEN: {
 304       smx_file_t tmp = xbt_new(s_smx_file_t,1);
 305       tmp->surf_file = surf_storage_action_get_file(synchro->io.surf_io);
 306       simcall_file_open__set__result(simcall, tmp);
 307       break;
 308     }
 309     case SIMCALL_FILE_CLOSE:
 310       xbt_free(simcall_file_close__get__fd(simcall));
 311       simcall_file_close__set__result(simcall, 0);
 312       break;
 313     case SIMCALL_FILE_WRITE:
 314       simcall_file_write__set__result(simcall, surf_action_get_cost(synchro->io.surf_io));
 315       break;
 316
 317     case SIMCALL_FILE_READ:
 318       simcall_file_read__set__result(simcall, surf_action_get_cost(synchro->io.surf_io));
 319       break;
 320
 321     default:
 322       break;
 323     }
 324   }
 325
 326   switch (surf_action_get_state(synchro->io.surf_io)) {
 327
 328     case SURF_ACTION_FAILED:
 329       synchro->state = SIMIX_FAILED;
 330       break;
 331
 332     case SURF_ACTION_DONE:
 333       synchro->state = SIMIX_DONE;
 334       break;
 335
 336     default:
 337       THROW_IMPOSSIBLE;
 338       break;
 339   }
 340
 341   SIMIX_io_finish(synchro);
 342 }
 343
 344 void SIMIX_io_destroy(smx_synchro_t synchro)
 345 {
 346   XBT_DEBUG("Destroy synchro %p", synchro);
 347   if (synchro->io.surf_io)
 348     surf_action_unref(synchro->io.surf_io);
 349   xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
 350 }
 351
 352 void SIMIX_io_finish(smx_synchro_t synchro)
 353 {
 354   xbt_fifo_item_t item;
 355   smx_simcall_t simcall;
 356
 357   xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
 358
 359     switch (synchro->state) {
 360
 361       case SIMIX_DONE:
 362         /* do nothing, synchro done */
 363         break;
 364
 365       case SIMIX_FAILED:
 366         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 367         break;
 368
 369       case SIMIX_CANCELED:
 370         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 371         break;
 372
 373       default:
 374         xbt_die("Internal error in SIMIX_io_finish: unexpected synchro state %d",
 375             (int)synchro->state);
 376     }
 377
 378     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 379       simcall->issuer->context->iwannadie = 1;
 380     }
 381
 382     simcall->issuer->waiting_synchro = NULL;
 383     SIMIX_simcall_answer(simcall);
 384   }
 385
 386   /* We no longer need it */
 387   SIMIX_io_destroy(synchro);
 388 }