src/simix/smx_io.c

   1 /* Copyright (c) 2007, 2008, 2009, 2010. 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 //SIMIX FILE READ
  18 void SIMIX_pre_file_read(smx_simcall_t simcall)
  19 {
  20   smx_action_t action = SIMIX_file_read(simcall->issuer,
  21       simcall->file_read.storage,
  22       simcall->file_read.ptr,
  23       simcall->file_read.size,
  24       simcall->file_read.nmemb,
  25       simcall->file_read.stream);
  26   xbt_fifo_push(action->simcalls, simcall);
  27   simcall->issuer->waiting_action = action;
  28 }
  29
  30 smx_action_t SIMIX_file_read(smx_process_t process, const char* storage, void* ptr, size_t size, size_t nmemb, m_file_t stream)
  31 {
  32   smx_action_t action;
  33   smx_host_t host = process->smx_host;
  34
  35   /* check if the host is active */
  36   if (surf_workstation_model->extension.
  37       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
  38     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  39            host->name);
  40   }
  41
  42   action = xbt_mallocator_get(simix_global->action_mallocator);
  43   action->type = SIMIX_ACTION_IO;
  44   action->name = NULL;
  45 #ifdef HAVE_TRACING
  46   action->category = NULL;
  47 #endif
  48
  49   action->io.host = host;
  50   action->io.surf_io = surf_workstation_model->extension.workstation.read(host->host, storage, ptr, size, nmemb, stream),
  51
  52   surf_workstation_model->action_data_set(action->io.surf_io, action);
  53   XBT_DEBUG("Create io action %p", action);
  54
  55   return action;
  56 }
  57
  58 //SIMIX FILE WRITE
  59 void SIMIX_pre_file_write(smx_simcall_t simcall)
  60 {
  61   smx_action_t action = SIMIX_file_write(simcall->issuer,
  62       simcall->file_write.storage,
  63       simcall->file_write.ptr,
  64       simcall->file_write.size,
  65       simcall->file_write.nmemb,
  66       simcall->file_write.stream);
  67   xbt_fifo_push(action->simcalls, simcall);
  68   simcall->issuer->waiting_action = action;
  69 }
  70
  71 smx_action_t SIMIX_file_write(smx_process_t process, const char* storage, const void* ptr, size_t size, size_t nmemb, m_file_t stream)
  72 {
  73   smx_action_t action;
  74   smx_host_t host = process->smx_host;
  75
  76   /* check if the host is active */
  77   if (surf_workstation_model->extension.
  78       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
  79     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  80            host->name);
  81   }
  82
  83   action = xbt_mallocator_get(simix_global->action_mallocator);
  84   action->type = SIMIX_ACTION_IO;
  85   action->name = NULL;
  86 #ifdef HAVE_TRACING
  87   action->category = NULL;
  88 #endif
  89
  90   action->io.host = host;
  91   action->io.surf_io = surf_workstation_model->extension.workstation.write(host->host, storage, ptr, size, nmemb, stream);
  92
  93   surf_workstation_model->action_data_set(action->io.surf_io, action);
  94   XBT_DEBUG("Create io action %p", action);
  95
  96   return action;
  97 }
  98
  99 //SIMIX FILE OPEN
 100 void SIMIX_pre_file_open(smx_simcall_t simcall)
 101 {
 102   smx_action_t action = SIMIX_file_open(simcall->issuer,
 103       simcall->file_open.storage,
 104       simcall->file_open.path,
 105       simcall->file_open.mode);
 106   xbt_fifo_push(action->simcalls, simcall);
 107   simcall->issuer->waiting_action = action;
 108 }
 109
 110 smx_action_t SIMIX_file_open(smx_process_t process ,const char* storage, const char* path, const char* mode)
 111 {
 112   smx_action_t action;
 113   smx_host_t host = process->smx_host;
 114
 115   /* check if the host is active */
 116   if (surf_workstation_model->extension.
 117       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 118     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 119            host->name);
 120   }
 121
 122   action = xbt_mallocator_get(simix_global->action_mallocator);
 123   action->type = SIMIX_ACTION_IO;
 124   action->name = NULL;
 125 #ifdef HAVE_TRACING
 126   action->category = NULL;
 127 #endif
 128
 129   action->io.host = host;
 130   action->io.surf_io = surf_workstation_model->extension.workstation.open(host->host, storage, path, mode);
 131
 132   surf_workstation_model->action_data_set(action->io.surf_io, action);
 133   XBT_DEBUG("Create io action %p", action);
 134
 135   return action;
 136 }
 137
 138 //SIMIX FILE CLOSE
 139 void SIMIX_pre_file_close(smx_simcall_t simcall)
 140 {
 141   smx_action_t action = SIMIX_file_close(simcall->issuer,
 142       simcall->file_close.storage,
 143       simcall->file_close.fp);
 144   xbt_fifo_push(action->simcalls, simcall);
 145   simcall->issuer->waiting_action = action;
 146 }
 147
 148 smx_action_t SIMIX_file_close(smx_process_t process ,const char* storage, m_file_t fp)
 149 {
 150   smx_action_t action;
 151   smx_host_t host = process->smx_host;
 152
 153   /* check if the host is active */
 154   if (surf_workstation_model->extension.
 155       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 156     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 157            host->name);
 158   }
 159
 160   action = xbt_mallocator_get(simix_global->action_mallocator);
 161   action->type = SIMIX_ACTION_IO;
 162   action->name = NULL;
 163 #ifdef HAVE_TRACING
 164   action->category = NULL;
 165 #endif
 166
 167   action->io.host = host;
 168   action->io.surf_io = surf_workstation_model->extension.workstation.close(host->host, storage, fp);
 169
 170   surf_workstation_model->action_data_set(action->io.surf_io, action);
 171   XBT_DEBUG("Create io action %p", action);
 172
 173   return action;
 174 }
 175
 176 //SIMIX FILE STAT
 177 void SIMIX_pre_file_stat(smx_simcall_t simcall)
 178 {
 179   smx_action_t action = SIMIX_file_stat(simcall->issuer,
 180       simcall->file_stat.storage,
 181       simcall->file_stat.fd,
 182       simcall->file_stat.buf);
 183   xbt_fifo_push(action->simcalls, simcall);
 184   simcall->issuer->waiting_action = action;
 185 }
 186
 187 smx_action_t SIMIX_file_stat(smx_process_t process ,const char* storage, int fd, void* buf)
 188 {
 189   smx_action_t action;
 190   smx_host_t host = process->smx_host;
 191
 192   /* check if the host is active */
 193   if (surf_workstation_model->extension.
 194       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 195     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 196            host->name);
 197   }
 198
 199   action = xbt_mallocator_get(simix_global->action_mallocator);
 200   action->type = SIMIX_ACTION_IO;
 201   action->name = NULL;
 202 #ifdef HAVE_TRACING
 203   action->category = NULL;
 204 #endif
 205
 206   action->io.host = host;
 207   action->io.surf_io = surf_workstation_model->extension.workstation.stat(host->host, storage, fd, buf);
 208
 209   surf_workstation_model->action_data_set(action->io.surf_io, action);
 210   XBT_DEBUG("Create io action %p", action);
 211
 212   return action;
 213 }
 214
 215 void SIMIX_post_io(smx_action_t action)
 216 {
 217   switch (surf_workstation_model->action_state_get(action->io.surf_io)) {
 218
 219     case SURF_ACTION_FAILED:
 220       action->state = SIMIX_FAILED;
 221       break;
 222
 223     case SURF_ACTION_DONE:
 224       action->state = SIMIX_DONE;
 225       break;
 226
 227     default:
 228       THROW_IMPOSSIBLE;
 229       break;
 230   }
 231
 232   SIMIX_io_finish(action);
 233 }
 234
 235 void SIMIX_io_destroy(smx_action_t action)
 236 {
 237   XBT_DEBUG("Destroy action %p", action);
 238   if (action->io.surf_io)
 239     action->io.surf_io->model_type->action_unref(action->io.surf_io);
 240   xbt_mallocator_release(simix_global->action_mallocator, action);
 241 }
 242
 243 void SIMIX_io_finish(smx_action_t action)
 244 {
 245   xbt_fifo_item_t item;
 246   smx_simcall_t simcall;
 247
 248   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 249
 250     switch (action->state) {
 251
 252       case SIMIX_DONE:
 253         /* do nothing, action done */
 254         break;
 255
 256       case SIMIX_FAILED:
 257         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 258         break;
 259
 260       case SIMIX_CANCELED:
 261         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 262         break;
 263
 264       default:
 265         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 266             (int)action->state);
 267     }
 268     simcall->issuer->waiting_action = NULL;
 269     SIMIX_simcall_answer(simcall);
 270   }
 271
 272   /* We no longer need it */
 273   SIMIX_io_destroy(action);
 274 }