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.ptr,
  22       simcall->file_read.size,
  23       simcall->file_read.nmemb,
  24       simcall->file_read.stream);
  25   xbt_fifo_push(action->simcalls, simcall);
  26   simcall->issuer->waiting_action = action;
  27 }
  28
  29 smx_action_t SIMIX_file_read(smx_process_t process, void* ptr, size_t size, size_t nmemb, smx_file_t stream)
  30 {
  31   smx_action_t action;
  32   smx_host_t host = process->smx_host;
  33
  34   /* check if the host is active */
  35   if (surf_workstation_model->extension.
  36       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
  37     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
  38            host->name);
  39   }
  40
  41   action = xbt_mallocator_get(simix_global->action_mallocator);
  42   action->type = SIMIX_ACTION_IO;
  43   action->name = NULL;
  44 #ifdef HAVE_TRACING
  45   action->category = NULL;
  46 #endif
  47
  48   action->io.host = host;
  49   //  TODO in surf model disk???
  50   //  action->io.surf_io = surf_workstation_model->extension.storage.read(host->host, name),
  51   action->io.surf_io = surf_workstation_model->extension.workstation.sleep(host->host, 1.0);
  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.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 void* ptr, size_t size, size_t nmemb, smx_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   //  TODO in surf model disk???
  92   //  action->io.surf_io = surf_workstation_model->extension.storage.write(host->host, name),
  93   action->io.surf_io = surf_workstation_model->extension.workstation.sleep(host->host, 2.0);
  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.path,
 106       simcall->file_open.mode);
 107   xbt_fifo_push(action->simcalls, simcall);
 108   simcall->issuer->waiting_action = action;
 109 }
 110
 111 smx_action_t SIMIX_file_open(smx_process_t process, const char* path, const char* mode)
 112 {
 113   smx_action_t action;
 114   smx_host_t host = process->smx_host;
 115
 116   /* check if the host is active */
 117   if (surf_workstation_model->extension.
 118       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 119     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 120            host->name);
 121   }
 122
 123   action = xbt_mallocator_get(simix_global->action_mallocator);
 124   action->type = SIMIX_ACTION_IO;
 125   action->name = NULL;
 126 #ifdef HAVE_TRACING
 127   action->category = NULL;
 128 #endif
 129
 130   action->io.host = host;
 131   //  TODO in surf model disk???
 132   //  action->io.surf_io = surf_workstation_model->extension.storage.open(host->host, name),
 133   action->io.surf_io = surf_workstation_model->extension.workstation.sleep(host->host, 3.0);
 134
 135   surf_workstation_model->action_data_set(action->io.surf_io, action);
 136   XBT_DEBUG("Create io action %p", action);
 137
 138   return action;
 139 }
 140
 141 //SIMIX FILE CLOSE
 142 void SIMIX_pre_file_close(smx_simcall_t simcall)
 143 {
 144   smx_action_t action = SIMIX_file_close(simcall->issuer,
 145       simcall->file_close.fp);
 146   xbt_fifo_push(action->simcalls, simcall);
 147   simcall->issuer->waiting_action = action;
 148 }
 149
 150 smx_action_t SIMIX_file_close(smx_process_t process, smx_file_t fp)
 151 {
 152   smx_action_t action;
 153   smx_host_t host = process->smx_host;
 154
 155   /* check if the host is active */
 156   if (surf_workstation_model->extension.
 157       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 158     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 159            host->name);
 160   }
 161
 162   action = xbt_mallocator_get(simix_global->action_mallocator);
 163   action->type = SIMIX_ACTION_IO;
 164   action->name = NULL;
 165 #ifdef HAVE_TRACING
 166   action->category = NULL;
 167 #endif
 168
 169   action->io.host = host;
 170   //  TODO in surf model disk???
 171   //  action->io.surf_io = surf_workstation_model->extension.storage.close(host->host, name),
 172   action->io.surf_io = surf_workstation_model->extension.workstation.sleep(host->host, 4.0);
 173
 174   surf_workstation_model->action_data_set(action->io.surf_io, action);
 175   XBT_DEBUG("Create io action %p", action);
 176
 177   return action;
 178 }
 179
 180 //SIMIX FILE STAT
 181 void SIMIX_pre_file_stat(smx_simcall_t simcall)
 182 {
 183   smx_action_t action = SIMIX_file_stat(simcall->issuer,
 184       simcall->file_stat.fd,
 185       simcall->file_stat.buf);
 186   xbt_fifo_push(action->simcalls, simcall);
 187   simcall->issuer->waiting_action = action;
 188 }
 189
 190 smx_action_t SIMIX_file_stat(smx_process_t process, int fd, void* buf)
 191 {
 192   smx_action_t action;
 193   smx_host_t host = process->smx_host;
 194
 195   /* check if the host is active */
 196   if (surf_workstation_model->extension.
 197       workstation.get_state(host->host) != SURF_RESOURCE_ON) {
 198     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
 199            host->name);
 200   }
 201
 202   action = xbt_mallocator_get(simix_global->action_mallocator);
 203   action->type = SIMIX_ACTION_IO;
 204   action->name = NULL;
 205 #ifdef HAVE_TRACING
 206   action->category = NULL;
 207 #endif
 208
 209   action->io.host = host;
 210   //  TODO in surf model disk???
 211   //  action->io.surf_io = surf_workstation_model->extension.storage.stat(host->host, name),
 212   action->io.surf_io = surf_workstation_model->extension.workstation.sleep(host->host, 5.0);
 213
 214   surf_workstation_model->action_data_set(action->io.surf_io, action);
 215   XBT_DEBUG("Create io action %p", action);
 216
 217   return action;
 218 }
 219
 220 void SIMIX_post_io(smx_action_t action)
 221 {
 222   switch (surf_workstation_model->action_state_get(action->io.surf_io)) {
 223
 224     case SURF_ACTION_FAILED:
 225       action->state = SIMIX_FAILED;
 226       break;
 227
 228     case SURF_ACTION_DONE:
 229       action->state = SIMIX_DONE;
 230       break;
 231
 232     default:
 233       THROW_IMPOSSIBLE;
 234       break;
 235   }
 236
 237   SIMIX_io_finish(action);
 238 }
 239
 240 void SIMIX_io_destroy(smx_action_t action)
 241 {
 242   XBT_DEBUG("Destroy action %p", action);
 243   if (action->io.surf_io)
 244     action->io.surf_io->model_type->action_unref(action->io.surf_io);
 245   xbt_mallocator_release(simix_global->action_mallocator, action);
 246 }
 247
 248 void SIMIX_io_finish(smx_action_t action)
 249 {
 250   volatile xbt_fifo_item_t item;
 251   smx_simcall_t simcall;
 252
 253   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 254
 255     switch (action->state) {
 256
 257       case SIMIX_DONE:
 258         /* do nothing, action done */
 259         break;
 260
 261       case SIMIX_FAILED:
 262         TRY {
 263           THROWF(io_error, 0, "IO failed");
 264         }
 265         CATCH(simcall->issuer->running_ctx->exception) {
 266           simcall->issuer->doexception = 1;
 267         }
 268       break;
 269
 270       case SIMIX_CANCELED:
 271         TRY {
 272           THROWF(cancel_error, 0, "Canceled");
 273         }
 274         CATCH(simcall->issuer->running_ctx->exception) {
 275           simcall->issuer->doexception = 1;
 276         }
 277         break;
 278
 279       default:
 280         xbt_die("Internal error in SIMIX_io_finish: unexpected action state %d",
 281             action->state);
 282     }
 283     simcall->issuer->waiting_action = NULL;
 284     SIMIX_simcall_answer(simcall);
 285   }
 286
 287   /* We no longer need it */
 288   SIMIX_io_destroy(action);
 289 }