src/simix/smx_io.cpp

   1 /* Copyright (c) 2007-2010, 2012-2015. 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 /**
  18  * \brief Internal function to create a SIMIX storage.
  19  * \param name name of the storage to create
  20  * \param storage the SURF storage to encapsulate
  21  * \param data some user data (may be NULL)
  22  */
  23 smx_storage_t SIMIX_storage_create(const char *name, void *storage, void *data)
  24 {
  25   smx_storage_priv_t smx_storage = xbt_new0(s_smx_storage_priv_t, 1);
  26
  27   smx_storage->data = data;
  28
  29   /* Update global variables */
  30   xbt_lib_set(storage_lib,name,SIMIX_STORAGE_LEVEL,smx_storage);
  31   return xbt_lib_get_elm_or_null(storage_lib, name);
  32 }
  33
  34 /**
  35  * \brief Internal function to destroy a SIMIX storage.
  36  *
  37  * \param s the host to destroy (a smx_storage_t)
  38  */
  39 void SIMIX_storage_destroy(void *s)
  40 {
  41   smx_storage_priv_t storage = (smx_storage_priv_t) s;
  42
  43   xbt_assert((storage != NULL), "Invalid parameters");
  44   if (storage->data)
  45     free(storage->data);
  46
  47   /* Clean storage structure */
  48   free(storage);
  49 }
  50
  51 //SIMIX FILE READ
  52 void simcall_HANDLER_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  53 {
  54   smx_synchro_t synchro = SIMIX_file_read(fd, size, host);
  55   xbt_fifo_push(synchro->simcalls, simcall);
  56   simcall->issuer->waiting_synchro = synchro;
  57 }
  58
  59 smx_synchro_t SIMIX_file_read(smx_file_t fd, sg_size_t size, sg_host_t host)
  60 {
  61   smx_synchro_t synchro;
  62
  63   /* check if the host is active */
  64   if (surf_host_get_state(surf_host_resource_priv(host)) != SURF_RESOURCE_ON) {
  65     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  66            sg_host_get_name(host));
  67   }
  68
  69   synchro = (smx_synchro_t) xbt_mallocator_get(simix_global->synchro_mallocator);
  70   synchro->type = SIMIX_SYNC_IO;
  71   synchro->name = NULL;
  72   synchro->category = NULL;
  73
  74   synchro->io.host = host;
  75   synchro->io.surf_io = surf_host_read(host, fd->surf_file, size);
  76
  77   surf_action_set_data(synchro->io.surf_io, synchro);
  78   XBT_DEBUG("Create io synchro %p", synchro);
  79
  80   return synchro;
  81 }
  82
  83 //SIMIX FILE WRITE
  84 void simcall_HANDLER_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  85 {
  86   smx_synchro_t synchro = SIMIX_file_write(fd,  size, host);
  87   xbt_fifo_push(synchro->simcalls, simcall);
  88   simcall->issuer->waiting_synchro = synchro;
  89 }
  90
  91 smx_synchro_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host)
  92 {
  93   smx_synchro_t synchro;
  94
  95   /* check if the host is active */
  96   if (surf_host_get_state(surf_host_resource_priv(host)) != SURF_RESOURCE_ON) {
  97     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  98            sg_host_get_name(host));
  99   }
 100
 101   synchro = (smx_synchro_t) xbt_mallocator_get(simix_global->synchro_mallocator);
 102   synchro->type = SIMIX_SYNC_IO;
 103   synchro->name = NULL;
 104   synchro->category = NULL;
 105
 106   synchro->io.host = host;
 107   synchro->io.surf_io = surf_host_write(host, fd->surf_file, size);
 108
 109   surf_action_set_data(synchro->io.surf_io, synchro);
 110   XBT_DEBUG("Create io synchro %p", synchro);
 111
 112   return synchro;
 113 }
 114
 115 //SIMIX FILE OPEN
 116 void simcall_HANDLER_file_open(smx_simcall_t simcall, const char* fullpath, sg_host_t host)
 117 {
 118   smx_synchro_t synchro = SIMIX_file_open(fullpath, host);
 119   xbt_fifo_push(synchro->simcalls, simcall);
 120   simcall->issuer->waiting_synchro = synchro;
 121 }
 122
 123 smx_synchro_t SIMIX_file_open(const char* fullpath, sg_host_t host)
 124 {
 125   smx_synchro_t synchro;
 126
 127   /* check if the host is active */
 128   if (surf_host_get_state(surf_host_resource_priv(host)) != SURF_RESOURCE_ON) {
 129     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 130            sg_host_get_name(host));
 131   }
 132
 133   synchro = (smx_synchro_t) xbt_mallocator_get(simix_global->synchro_mallocator);
 134   synchro->type = SIMIX_SYNC_IO;
 135   synchro->name = NULL;
 136   synchro->category = NULL;
 137
 138   synchro->io.host = host;
 139   synchro->io.surf_io = surf_host_open(host, fullpath);
 140
 141   surf_action_set_data(synchro->io.surf_io, synchro);
 142   XBT_DEBUG("Create io synchro %p", synchro);
 143
 144   return synchro;
 145 }
 146
 147 //SIMIX FILE CLOSE
 148 void simcall_HANDLER_file_close(smx_simcall_t simcall, smx_file_t fd, sg_host_t host)
 149 {
 150   smx_synchro_t synchro = SIMIX_file_close(fd, host);
 151   xbt_fifo_push(synchro->simcalls, simcall);
 152   simcall->issuer->waiting_synchro = synchro;
 153 }
 154
 155 smx_synchro_t SIMIX_file_close(smx_file_t fd, sg_host_t host)
 156 {
 157   smx_synchro_t synchro;
 158
 159   /* check if the host is active */
 160   if (surf_host_get_state(surf_host_resource_priv(host)) != SURF_RESOURCE_ON) {
 161     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 162            sg_host_get_name(host));
 163   }
 164
 165   synchro = (smx_synchro_t) xbt_mallocator_get(simix_global->synchro_mallocator);
 166   synchro->type = SIMIX_SYNC_IO;
 167   synchro->name = NULL;
 168   synchro->category = NULL;
 169
 170   synchro->io.host = host;
 171   synchro->io.surf_io = surf_host_close(host, fd->surf_file);
 172
 173   surf_action_set_data(synchro->io.surf_io, synchro);
 174   XBT_DEBUG("Create io synchro %p", synchro);
 175
 176   return synchro;
 177 }
 178
 179
 180 //SIMIX FILE UNLINK
 181 int SIMIX_file_unlink(smx_file_t fd, sg_host_t host)
 182 {
 183   /* check if the host is active */
 184   if (surf_host_get_state(surf_host_resource_priv(host)) != SURF_RESOURCE_ON) {
 185     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 186            sg_host_get_name(host));
 187   }
 188
 189   int res = surf_host_unlink(host, fd->surf_file);
 190   xbt_free(fd);
 191   return !!res;
 192 }
 193
 194 sg_size_t simcall_HANDLER_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 195 {
 196   return SIMIX_file_get_size(simcall->issuer, fd);
 197 }
 198
 199 sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 200 {
 201   sg_host_t host = process->host;
 202   return  surf_host_get_size(host, fd->surf_file);
 203 }
 204
 205 sg_size_t simcall_HANDLER_file_tell(smx_simcall_t simcall, smx_file_t fd)
 206 {
 207   return SIMIX_file_tell(simcall->issuer, fd);
 208 }
 209
 210 sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd)
 211 {
 212   sg_host_t host = process->host;
 213   return  surf_host_file_tell(host, fd->surf_file);
 214 }
 215
 216
 217 xbt_dynar_t simcall_HANDLER_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 218 {
 219   return SIMIX_file_get_info(simcall->issuer, fd);
 220 }
 221
 222 xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd)
 223 {
 224   sg_host_t host = process->host;
 225   return  surf_host_get_info(host, fd->surf_file);
 226 }
 227
 228 int simcall_HANDLER_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 229 {
 230   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 231 }
 232
 233 int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin)
 234 {
 235   sg_host_t host = process->host;
 236   return  surf_host_file_seek(host, fd->surf_file, offset, origin);
 237 }
 238
 239 int simcall_HANDLER_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 240 {
 241   return SIMIX_file_move(simcall->issuer, file, fullpath);
 242 }
 243
 244 int SIMIX_file_move(smx_process_t process, smx_file_t file, const char* fullpath)
 245 {
 246   sg_host_t host = process->host;
 247   return  surf_host_file_move(host, file->surf_file, fullpath);
 248 }
 249
 250 sg_size_t SIMIX_storage_get_size(smx_storage_t storage){
 251   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 252   return surf_storage_get_size(storage);
 253 }
 254
 255 sg_size_t simcall_HANDLER_storage_get_free_size(smx_simcall_t simcall, smx_storage_t storage)
 256 {
 257   return SIMIX_storage_get_free_size(simcall->issuer, storage);
 258 }
 259
 260 sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage)
 261 {
 262   return  surf_storage_get_free_size(storage);
 263 }
 264
 265 sg_size_t simcall_HANDLER_storage_get_used_size(smx_simcall_t simcall, smx_storage_t storage)
 266 {
 267   return SIMIX_storage_get_used_size(simcall->issuer, storage);
 268 }
 269
 270 sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage)
 271 {
 272   return  surf_storage_get_used_size(storage);
 273 }
 274
 275 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 276   xbt_assert((storage != NULL), "Invalid parameters (simix storage is NULL)");
 277   return (xbt_dict_t) surf_resource_get_properties((surf_cpp_resource_t)
 278     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_host_get_state(surf_host_resource_priv(simcall->issuer->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 }