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->host = host;
  70   synchro->surf_io = surf_host_read(host, fd->surf_file, size);
  71
  72   synchro->surf_io->setData(synchro);
  73   XBT_DEBUG("Create io synchro %p", synchro);
  74
  75   return synchro;
  76 }
  77
  78 //SIMIX FILE WRITE
  79 void simcall_HANDLER_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  80 {
  81   smx_synchro_t synchro = SIMIX_file_write(fd,  size, host);
  82   xbt_fifo_push(synchro->simcalls, simcall);
  83   simcall->issuer->waiting_synchro = synchro;
  84 }
  85
  86 smx_synchro_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host)
  87 {
  88   if (host->isOff())
  89     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
  90
  91   simgrid::simix::Io *synchro = new simgrid::simix::Io();
  92   synchro->host = host;
  93   synchro->surf_io = surf_host_write(host, fd->surf_file, size);
  94   synchro->surf_io->setData(synchro);
  95   XBT_DEBUG("Create io synchro %p", synchro);
  96
  97   return synchro;
  98 }
  99
 100 //SIMIX FILE OPEN
 101 void simcall_HANDLER_file_open(smx_simcall_t simcall, const char* fullpath, sg_host_t host)
 102 {
 103   smx_synchro_t synchro = SIMIX_file_open(fullpath, host);
 104   xbt_fifo_push(synchro->simcalls, simcall);
 105   simcall->issuer->waiting_synchro = synchro;
 106 }
 107
 108 smx_synchro_t SIMIX_file_open(const char* fullpath, sg_host_t host)
 109 {
 110   if (host->isOff())
 111     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
 112
 113   simgrid::simix::Io *synchro = new simgrid::simix::Io();
 114   synchro->host = host;
 115   synchro->surf_io = surf_host_open(host, fullpath);
 116   synchro->surf_io->setData(synchro);
 117   XBT_DEBUG("Create io synchro %p", synchro);
 118
 119   return synchro;
 120 }
 121
 122 //SIMIX FILE CLOSE
 123 void simcall_HANDLER_file_close(smx_simcall_t simcall, smx_file_t fd, sg_host_t host)
 124 {
 125   smx_synchro_t synchro = SIMIX_file_close(fd, host);
 126   xbt_fifo_push(synchro->simcalls, simcall);
 127   simcall->issuer->waiting_synchro = synchro;
 128 }
 129
 130 smx_synchro_t SIMIX_file_close(smx_file_t fd, sg_host_t host)
 131 {
 132   if (host->isOff())
 133     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
 134
 135   simgrid::simix::Io *synchro = new simgrid::simix::Io();
 136   synchro->host = host;
 137   synchro->surf_io = surf_host_close(host, fd->surf_file);
 138   synchro->surf_io->setData(synchro);
 139   XBT_DEBUG("Create io synchro %p", synchro);
 140
 141   return synchro;
 142 }
 143
 144
 145 //SIMIX FILE UNLINK
 146 int SIMIX_file_unlink(smx_file_t fd, sg_host_t host)
 147 {
 148   if (host->isOff())
 149     THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
 150
 151   int res = surf_host_unlink(host, fd->surf_file);
 152   xbt_free(fd);
 153   return !!res;
 154 }
 155
 156 sg_size_t simcall_HANDLER_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 157 {
 158   return SIMIX_file_get_size(simcall->issuer, fd);
 159 }
 160
 161 sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd)
 162 {
 163   sg_host_t host = process->host;
 164   return  surf_host_get_size(host, fd->surf_file);
 165 }
 166
 167 sg_size_t simcall_HANDLER_file_tell(smx_simcall_t simcall, smx_file_t fd)
 168 {
 169   return SIMIX_file_tell(simcall->issuer, fd);
 170 }
 171
 172 sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd)
 173 {
 174   sg_host_t host = process->host;
 175   return  surf_host_file_tell(host, fd->surf_file);
 176 }
 177
 178
 179 xbt_dynar_t simcall_HANDLER_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 180 {
 181   return SIMIX_file_get_info(simcall->issuer, fd);
 182 }
 183
 184 xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd)
 185 {
 186   sg_host_t host = process->host;
 187   return  surf_host_get_info(host, fd->surf_file);
 188 }
 189
 190 int simcall_HANDLER_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 191 {
 192   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 193 }
 194
 195 int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin)
 196 {
 197   sg_host_t host = process->host;
 198   return  surf_host_file_seek(host, fd->surf_file, offset, origin);
 199 }
 200
 201 int simcall_HANDLER_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 202 {
 203   return SIMIX_file_move(simcall->issuer, file, fullpath);
 204 }
 205
 206 int SIMIX_file_move(smx_process_t process, smx_file_t file, const char* fullpath)
 207 {
 208   sg_host_t host = process->host;
 209   return  surf_host_file_move(host, file->surf_file, fullpath);
 210 }
 211
 212 sg_size_t SIMIX_storage_get_size(smx_storage_t storage){
 213   return surf_storage_get_size(storage);
 214 }
 215
 216 sg_size_t simcall_HANDLER_storage_get_free_size(smx_simcall_t simcall, smx_storage_t storage)
 217 {
 218   return SIMIX_storage_get_free_size(simcall->issuer, storage);
 219 }
 220
 221 sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage)
 222 {
 223   return  surf_storage_get_free_size(storage);
 224 }
 225
 226 sg_size_t simcall_HANDLER_storage_get_used_size(smx_simcall_t simcall, smx_storage_t storage)
 227 {
 228   return SIMIX_storage_get_used_size(simcall->issuer, storage);
 229 }
 230
 231 sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage)
 232 {
 233   return  surf_storage_get_used_size(storage);
 234 }
 235
 236 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 237   return surf_storage_get_properties(storage);
 238 }
 239
 240 const char* SIMIX_storage_get_name(smx_storage_t storage){
 241   return sg_storage_name(storage);
 242 }
 243
 244 xbt_dict_t SIMIX_storage_get_content(smx_storage_t storage){
 245   return surf_storage_get_content(storage);
 246 }
 247
 248 const char* SIMIX_storage_get_host(smx_storage_t storage){
 249   return surf_storage_get_host(storage);
 250 }
 251
 252 void SIMIX_post_io(smx_synchro_t synchro)
 253 {
 254 }
 255
 256 void SIMIX_io_destroy(smx_synchro_t synchro)
 257 {
 258   simgrid::simix::Io *io = static_cast<simgrid::simix::Io*>(synchro);
 259   XBT_DEBUG("Destroy synchro %p", synchro);
 260   if (io->surf_io)
 261     io->surf_io->unref();
 262   delete io;
 263 }
 264
 265 void SIMIX_io_finish(smx_synchro_t synchro)
 266 {
 267   xbt_fifo_item_t item;
 268   smx_simcall_t simcall;
 269
 270   xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
 271
 272     switch (synchro->state) {
 273
 274       case SIMIX_DONE:
 275         /* do nothing, synchro done */
 276         break;
 277
 278       case SIMIX_FAILED:
 279         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 280         break;
 281
 282       case SIMIX_CANCELED:
 283         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 284         break;
 285
 286       default:
 287         xbt_die("Internal error in SIMIX_io_finish: unexpected synchro state %d",
 288             (int)synchro->state);
 289     }
 290
 291     if (simcall->issuer->host->isOff()) {
 292       simcall->issuer->context->iwannadie = 1;
 293     }
 294
 295     simcall->issuer->waiting_synchro = NULL;
 296     SIMIX_simcall_answer(simcall);
 297   }
 298
 299   /* We no longer need it */
 300   SIMIX_io_destroy(synchro);
 301 }