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 "src/surf/surf_interface.hpp"
   8 #include "smx_private.h"
   9 #include "xbt/sysdep.h"
  10 #include "xbt/log.h"
  11 #include "xbt/dict.h"
  12 #include "mc/mc.h"
  13
  14 #include "src/simix/SynchroIo.hpp"
  15
  16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
  17
  18
  19 /**
  20  * \brief Internal function to create a SIMIX storage.
  21  * \param name name of the storage to create
  22  * \param storage the SURF storage to encapsulate
  23  * \param data some user data (may be NULL)
  24  */
  25 smx_storage_t SIMIX_storage_create(const char *name, void *storage, void *data)
  26 {
  27   smx_storage_priv_t smx_storage = xbt_new0(s_smx_storage_priv_t, 1);
  28
  29   smx_storage->data = data;
  30
  31   /* Update global variables */
  32   xbt_lib_set(storage_lib,name,SIMIX_STORAGE_LEVEL,smx_storage);
  33   return xbt_lib_get_elm_or_null(storage_lib, name);
  34 }
  35
  36 /**
  37  * \brief Internal function to destroy a SIMIX storage.
  38  *
  39  * \param s the host to destroy (a smx_storage_t)
  40  */
  41 void SIMIX_storage_destroy(void *s)
  42 {
  43   smx_storage_priv_t storage = (smx_storage_priv_t) s;
  44
  45   xbt_assert((storage != NULL), "Invalid parameters");
  46   if (storage->data)
  47     free(storage->data);
  48
  49   /* Clean storage structure */
  50   free(storage);
  51 }
  52
  53 //SIMIX FILE READ
  54 void simcall_HANDLER_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  55 {
  56   smx_synchro_t synchro = SIMIX_file_read(fd, size, host);
  57   xbt_fifo_push(synchro->simcalls, simcall);
  58   simcall->issuer->waiting_synchro = synchro;
  59 }
  60
  61 smx_synchro_t SIMIX_file_read(smx_file_t fd, sg_size_t size, sg_host_t host)
  62 {
  63   /* check if the host is active */
  64   if (host->isOff())
  65     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
  66
  67
  68   simgrid::simix::Io *synchro = new simgrid::simix::Io();
  69   synchro->name = NULL;
  70   synchro->host = host;
  71   synchro->surf_io = surf_host_read(host, fd->surf_file, size);
  72
  73   synchro->surf_io->setData(synchro);
  74   XBT_DEBUG("Create io synchro %p", synchro);
  75
  76   return synchro;
  77 }
  78
  79 //SIMIX FILE WRITE
  80 void simcall_HANDLER_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  81 {
  82   smx_synchro_t synchro = SIMIX_file_write(fd,  size, host);
  83   xbt_fifo_push(synchro->simcalls, simcall);
  84   simcall->issuer->waiting_synchro = synchro;
  85 }
  86
  87 smx_synchro_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host)
  88 {
  89   if (host->isOff())
  90     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
  91
  92   simgrid::simix::Io *synchro = new simgrid::simix::Io();
  93   synchro->name = NULL;
  94   synchro->host = host;
  95   synchro->surf_io = surf_host_write(host, fd->surf_file, size);
  96   synchro->surf_io->setData(synchro);
  97   XBT_DEBUG("Create io synchro %p", synchro);
  98
  99   return synchro;
 100 }
 101
 102 //SIMIX FILE OPEN
 103 void simcall_HANDLER_file_open(smx_simcall_t simcall, const char* fullpath, sg_host_t host)
 104 {
 105   smx_synchro_t synchro = SIMIX_file_open(fullpath, host);
 106   xbt_fifo_push(synchro->simcalls, simcall);
 107   simcall->issuer->waiting_synchro = synchro;
 108 }
 109
 110 smx_synchro_t SIMIX_file_open(const char* fullpath, sg_host_t host)
 111 {
 112   if (host->isOff())
 113     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
 114
 115   simgrid::simix::Io *synchro = new simgrid::simix::Io();
 116   synchro->name = NULL;
 117   synchro->host = host;
 118   synchro->surf_io = surf_host_open(host, fullpath);
 119   synchro->surf_io->setData(synchro);
 120   XBT_DEBUG("Create io synchro %p", synchro);
 121
 122   return synchro;
 123 }
 124
 125 //SIMIX FILE CLOSE
 126 void simcall_HANDLER_file_close(smx_simcall_t simcall, smx_file_t fd, sg_host_t host)
 127 {
 128   smx_synchro_t synchro = SIMIX_file_close(fd, host);
 129   xbt_fifo_push(synchro->simcalls, simcall);
 130   simcall->issuer->waiting_synchro = synchro;
 131 }
 132
 133 smx_synchro_t SIMIX_file_close(smx_file_t fd, sg_host_t host)
 134 {
 135   if (host->isOff())
 136     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
 137
 138   simgrid::simix::Io *synchro = new simgrid::simix::Io();
 139   synchro->name = NULL;
 140   synchro->host = host;
 141   synchro->surf_io = surf_host_close(host, fd->surf_file);
 142   synchro->surf_io->setData(synchro);
 143   XBT_DEBUG("Create io synchro %p", synchro);
 144
 145   return synchro;
 146 }
 147
 148
 149 //SIMIX FILE UNLINK
 150 int SIMIX_file_unlink(smx_file_t fd, sg_host_t host)
 151 {
 152   if (host->isOff())
 153     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
 154
 155   int res = surf_host_unlink(host, fd->surf_file);
 156   xbt_free(fd);
 157   return !!res;
 158 }
 159
 160 sg_size_t simcall_HANDLER_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 161 {
 162   return SIMIX_file_get_size(simcall->issuer, fd);
 163 }
 164
 165 sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 166 {
 167   sg_host_t host = process->host;
 168   return  surf_host_get_size(host, fd->surf_file);
 169 }
 170
 171 sg_size_t simcall_HANDLER_file_tell(smx_simcall_t simcall, smx_file_t fd)
 172 {
 173   return SIMIX_file_tell(simcall->issuer, fd);
 174 }
 175
 176 sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd)
 177 {
 178   sg_host_t host = process->host;
 179   return  surf_host_file_tell(host, fd->surf_file);
 180 }
 181
 182
 183 xbt_dynar_t simcall_HANDLER_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 184 {
 185   return SIMIX_file_get_info(simcall->issuer, fd);
 186 }
 187
 188 xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd)
 189 {
 190   sg_host_t host = process->host;
 191   return  surf_host_get_info(host, fd->surf_file);
 192 }
 193
 194 int simcall_HANDLER_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 195 {
 196   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 197 }
 198
 199 int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin)
 200 {
 201   sg_host_t host = process->host;
 202   return  surf_host_file_seek(host, fd->surf_file, offset, origin);
 203 }
 204
 205 int simcall_HANDLER_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 206 {
 207   return SIMIX_file_move(simcall->issuer, file, fullpath);
 208 }
 209
 210 int SIMIX_file_move(smx_process_t process, smx_file_t file, const char* fullpath)
 211 {
 212   sg_host_t host = process->host;
 213   return  surf_host_file_move(host, file->surf_file, fullpath);
 214 }
 215
 216 sg_size_t SIMIX_storage_get_size(smx_storage_t storage){
 217   return surf_storage_get_size(storage);
 218 }
 219
 220 sg_size_t simcall_HANDLER_storage_get_free_size(smx_simcall_t simcall, smx_storage_t storage)
 221 {
 222   return SIMIX_storage_get_free_size(simcall->issuer, storage);
 223 }
 224
 225 sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage)
 226 {
 227   return  surf_storage_get_free_size(storage);
 228 }
 229
 230 sg_size_t simcall_HANDLER_storage_get_used_size(smx_simcall_t simcall, smx_storage_t storage)
 231 {
 232   return SIMIX_storage_get_used_size(simcall->issuer, storage);
 233 }
 234
 235 sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage)
 236 {
 237   return  surf_storage_get_used_size(storage);
 238 }
 239
 240 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 241   return surf_storage_get_properties(storage);
 242 }
 243
 244 const char* SIMIX_storage_get_name(smx_storage_t storage){
 245   return sg_storage_name(storage);
 246 }
 247
 248 xbt_dict_t SIMIX_storage_get_content(smx_storage_t storage){
 249   return surf_storage_get_content(storage);
 250 }
 251
 252 const char* SIMIX_storage_get_host(smx_storage_t storage){
 253   return surf_storage_get_host(storage);
 254 }
 255
 256 void SIMIX_post_io(smx_synchro_t synchro)
 257 {
 258   xbt_fifo_item_t i;
 259   smx_simcall_t simcall;
 260
 261   simgrid::simix::Io *io = static_cast<simgrid::simix::Io*>(synchro);
 262
 263   xbt_fifo_foreach(synchro->simcalls,i,simcall,smx_simcall_t) {
 264     switch (simcall->call) {
 265     case SIMCALL_FILE_OPEN: {
 266       smx_file_t tmp = xbt_new(s_smx_file_t,1);
 267       tmp->surf_file = surf_storage_action_get_file(io->surf_io);
 268       simcall_file_open__set__result(simcall, tmp);
 269       break;
 270     }
 271     case SIMCALL_FILE_CLOSE:
 272       xbt_free(simcall_file_close__get__fd(simcall));
 273       simcall_file_close__set__result(simcall, 0);
 274       break;
 275     case SIMCALL_FILE_WRITE:
 276       simcall_file_write__set__result(simcall, io->surf_io->getCost());
 277       break;
 278
 279     case SIMCALL_FILE_READ:
 280       simcall_file_read__set__result(simcall, io->surf_io->getCost());
 281       break;
 282
 283     default:
 284       break;
 285     }
 286   }
 287
 288   switch (io->surf_io->getState()) {
 289
 290     case simgrid::surf::Action::State::failed:
 291       synchro->state = SIMIX_FAILED;
 292       break;
 293
 294     case simgrid::surf::Action::State::done:
 295       synchro->state = SIMIX_DONE;
 296       break;
 297
 298     default:
 299       THROW_IMPOSSIBLE;
 300       break;
 301   }
 302
 303   SIMIX_io_finish(synchro);
 304 }
 305
 306 void SIMIX_io_destroy(smx_synchro_t synchro)
 307 {
 308   simgrid::simix::Io *io = static_cast<simgrid::simix::Io*>(synchro);
 309   XBT_DEBUG("Destroy synchro %p", synchro);
 310   if (io->surf_io)
 311     io->surf_io->unref();
 312   delete io;
 313 }
 314
 315 void SIMIX_io_finish(smx_synchro_t synchro)
 316 {
 317   xbt_fifo_item_t item;
 318   smx_simcall_t simcall;
 319
 320   xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
 321
 322     switch (synchro->state) {
 323
 324       case SIMIX_DONE:
 325         /* do nothing, synchro done */
 326         break;
 327
 328       case SIMIX_FAILED:
 329         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 330         break;
 331
 332       case SIMIX_CANCELED:
 333         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 334         break;
 335
 336       default:
 337         xbt_die("Internal error in SIMIX_io_finish: unexpected synchro state %d",
 338             (int)synchro->state);
 339     }
 340
 341     if (simcall->issuer->host->isOff()) {
 342       simcall->issuer->context->iwannadie = 1;
 343     }
 344
 345     simcall->issuer->waiting_synchro = NULL;
 346     SIMIX_simcall_answer(simcall);
 347   }
 348
 349   /* We no longer need it */
 350   SIMIX_io_destroy(synchro);
 351 }