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   simcall->file_read.result = (action->io.surf_io)->read_write;
  29 }
  30
  31 smx_action_t SIMIX_file_read(smx_process_t process, const char* storage, void* ptr, size_t size, size_t nmemb, smx_file_t stream)
  32 {
  33   smx_action_t action;
  34   smx_host_t host = process->smx_host;
  35
  36   /* check if the host is active */
  37   if (surf_workstation_model->extension.
  38       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
  39     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  40            host->name);
  41   }
  42
  43   action = xbt_mallocator_get(simix_global->action_mallocator);
  44   action->type = SIMIX_ACTION_IO;
  45   action->name = NULL;
  46 #ifdef HAVE_TRACING
  47   action->category = NULL;
  48 #endif
  49
  50   action->io.host = host;
  51   action->io.surf_io = surf_workstation_model->extension.workstation.read(host->host, storage, ptr, size, nmemb, stream->surf_file),
  52
  53   surf_workstation_model->action_data_set(action->io.surf_io, action);
  54   XBT_DEBUG("Create io action %p", action);
  55
  56   return action;
  57 }
  58
  59 //SIMIX FILE WRITE
  60 void SIMIX_pre_file_write(smx_simcall_t simcall)
  61 {
  62   smx_action_t action = SIMIX_file_write(simcall->issuer,
  63       simcall->file_write.storage,
  64       simcall->file_write.ptr,
  65       simcall->file_write.size,
  66       simcall->file_write.nmemb,
  67       simcall->file_write.stream);
  68   xbt_fifo_push(action->simcalls, simcall);
  69   simcall->issuer->waiting_action = action;
  70   simcall->file_write.result = (action->io.surf_io)->read_write;
  71 }
  72
  73 smx_action_t SIMIX_file_write(smx_process_t process, const char* storage, const void* ptr, size_t size, size_t nmemb, smx_file_t stream)
  74 {
  75   smx_action_t action;
  76   smx_host_t host = process->smx_host;
  77
  78   /* check if the host is active */
  79   if (surf_workstation_model->extension.
  80       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
  81     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  82            host->name);
  83   }
  84
  85   action = xbt_mallocator_get(simix_global->action_mallocator);
  86   action->type = SIMIX_ACTION_IO;
  87   action->name = NULL;
  88 #ifdef HAVE_TRACING
  89   action->category = NULL;
  90 #endif
  91
  92   action->io.host = host;
  93   action->io.surf_io = surf_workstation_model->extension.workstation.write(host->host, storage, ptr, size, nmemb, stream->surf_file);
  94
  95   surf_workstation_model->action_data_set(action->io.surf_io, action);
  96   XBT_DEBUG("Create io action %p", action);
  97
  98   return action;
  99 }
 100
 101 //SIMIX FILE OPEN
 102 void SIMIX_pre_file_open(smx_simcall_t simcall)
 103 {
 104   smx_action_t action = SIMIX_file_open(simcall->issuer,
 105       simcall->file_open.storage,
 106       simcall->file_open.path,
 107       simcall->file_open.mode);
 108   xbt_fifo_push(action->simcalls, simcall);
 109   simcall->issuer->waiting_action = action;
 110   simcall->file_open.result = xbt_new(s_smx_file_t,1); /* FIXME */
 111   simcall->file_open.result->surf_file = (action->io.surf_io)->file;
 112 }
 113
 114 smx_action_t SIMIX_file_open(smx_process_t process ,const char* storage, const char* path, const char* mode)
 115 {
 116   smx_action_t action;
 117   smx_host_t host = process->smx_host;
 118
 119   /* check if the host is active */
 120   if (surf_workstation_model->extension.
 121       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 122     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 123            host->name);
 124   }
 125
 126   action = xbt_mallocator_get(simix_global->action_mallocator);
 127   action->type = SIMIX_ACTION_IO;
 128   action->name = NULL;
 129 #ifdef HAVE_TRACING
 130   action->category = NULL;
 131 #endif
 132
 133   action->io.host = host;
 134   action->io.surf_io = surf_workstation_model->extension.workstation.open(host->host, storage, path, mode);
 135
 136   surf_workstation_model->action_data_set(action->io.surf_io, action);
 137   XBT_DEBUG("Create io action %p", action);
 138
 139   return action;
 140 }
 141
 142 //SIMIX FILE CLOSE
 143 void SIMIX_pre_file_close(smx_simcall_t simcall)
 144 {
 145   smx_action_t action = SIMIX_file_close(simcall->issuer,
 146       simcall->file_close.storage,
 147       simcall->file_close.fp);
 148   xbt_fifo_push(action->simcalls, simcall);
 149   simcall->issuer->waiting_action = action;
 150   simcall->file_close.result = 0;
 151 }
 152
 153 smx_action_t SIMIX_file_close(smx_process_t process ,const char* storage, smx_file_t fp)
 154 {
 155   smx_action_t action;
 156   smx_host_t host = process->smx_host;
 157
 158   /* check if the host is active */
 159   if (surf_workstation_model->extension.
 160       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 161     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 162            host->name);
 163   }
 164
 165   action = xbt_mallocator_get(simix_global->action_mallocator);
 166   action->type = SIMIX_ACTION_IO;
 167   action->name = NULL;
 168 #ifdef HAVE_TRACING
 169   action->category = NULL;
 170 #endif
 171
 172   action->io.host = host;
 173   action->io.surf_io = surf_workstation_model->extension.workstation.close(host->host, storage, fp->surf_file);
 174
 175   surf_workstation_model->action_data_set(action->io.surf_io, action);
 176   XBT_DEBUG("Create io action %p", action);
 177
 178   return action;
 179 }
 180
 181 //SIMIX FILE STAT
 182 void SIMIX_pre_file_stat(smx_simcall_t simcall)
 183 {
 184   smx_action_t action = SIMIX_file_stat(simcall->issuer,
 185       simcall->file_stat.storage,
 186       simcall->file_stat.fd,
 187       simcall->file_stat.buf);
 188   xbt_fifo_push(action->simcalls, simcall);
 189   simcall->issuer->waiting_action = action;
 190   simcall->file_stat.result = 0;
 191 }
 192
 193 smx_action_t SIMIX_file_stat(smx_process_t process ,const char* storage, int fd, void* buf)
 194 {
 195   smx_action_t action;
 196   smx_host_t host = process->smx_host;
 197
 198   /* check if the host is active */
 199   if (surf_workstation_model->extension.
 200       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 201     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 202            host->name);
 203   }
 204
 205   action = xbt_mallocator_get(simix_global->action_mallocator);
 206   action->type = SIMIX_ACTION_IO;
 207   action->name = NULL;
 208 #ifdef HAVE_TRACING
 209   action->category = NULL;
 210 #endif
 211
 212   action->io.host = host;
 213   action->io.surf_io = surf_workstation_model->extension.workstation.stat(host->host, storage, fd, buf);
 214
 215   surf_workstation_model->action_data_set(action->io.surf_io, action);
 216   XBT_DEBUG("Create io action %p", action);
 217
 218   return action;
 219 }
 220
 221 void SIMIX_post_io(smx_action_t action)
 222 {
 223   switch (surf_workstation_model->action_state_get(action->io.surf_io)) {
 224
 225     case SURF_ACTION_FAILED:
 226       action->state = SIMIX_FAILED;
 227       break;
 228
 229     case SURF_ACTION_DONE:
 230       action->state = SIMIX_DONE;
 231       break;
 232
 233     default:
 234       THROW_IMPOSSIBLE;
 235       break;
 236   }
 237
 238   SIMIX_io_finish(action);
 239 }
 240
 241 void SIMIX_io_destroy(smx_action_t action)
 242 {
 243   XBT_DEBUG("Destroy action %p", action);
 244   if (action->io.surf_io)
 245     action->io.surf_io->model_type->action_unref(action->io.surf_io);
 246   xbt_mallocator_release(simix_global->action_mallocator, action);
 247 }
 248
 249 void SIMIX_io_finish(smx_action_t action)
 250 {
 251   xbt_fifo_item_t item;
 252   smx_simcall_t simcall;
 253
 254   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 255
 256     switch (action->state) {
 257
 258       case SIMIX_DONE:
 259         /* do nothing, action done */
 260         break;
 261
 262       case SIMIX_FAILED:
 263         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 264         break;
 265
 266       case SIMIX_CANCELED:
 267         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 268         break;
 269
 270       default:
 271         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 272             (int)action->state);
 273     }
 274     simcall->issuer->waiting_action = NULL;
 275     SIMIX_simcall_answer(simcall);
 276   }
 277
 278   /* We no longer need it */
 279   SIMIX_io_destroy(action);
 280 }