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 <xbt/ex.hpp>
   8 #include <xbt/sysdep.h>
   9 #include <xbt/log.h>
  10 #include <xbt/dict.h>
  11
  12 #include <simgrid/s4u/host.hpp>
  13
  14 #include <mc/mc.h>
  15
  16 #include "src/surf/surf_interface.hpp"
  17 #include "smx_private.h"
  18
  19 #include "src/kernel/activity/SynchroIo.hpp"
  20
  21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
  22
  23 /**
  24  * \brief Internal function to create a SIMIX storage.
  25  * \param name name of the storage to create
  26  * \param storage the SURF storage to encapsulate
  27  * \param data some user data (may be nullptr)
  28  */
  29 smx_storage_t SIMIX_storage_create(const char *name, void *storage, void *data)
  30 {
  31   smx_storage_priv_t smx_storage = xbt_new0(s_smx_storage_priv_t, 1);
  32
  33   smx_storage->data = data;
  34
  35   /* Update global variables */
  36   xbt_lib_set(storage_lib,name,SIMIX_STORAGE_LEVEL,smx_storage);
  37   return xbt_lib_get_elm_or_null(storage_lib, name);
  38 }
  39
  40 /**
  41  * \brief Internal function to destroy a SIMIX storage.
  42  *
  43  * \param s the host to destroy (a smx_storage_t)
  44  */
  45 void SIMIX_storage_destroy(void *s)
  46 {
  47   smx_storage_priv_t storage = static_cast<smx_storage_priv_t>(s);
  48
  49   xbt_assert((storage != nullptr), "Invalid parameters");
  50   if (storage->data)
  51     free(storage->data);
  52
  53   /* Clean storage structure */
  54   free(storage);
  55 }
  56
  57 //SIMIX FILE READ
  58 void simcall_HANDLER_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  59 {
  60   smx_activity_t synchro = SIMIX_file_read(fd, size, host);
  61   synchro->simcalls.push_back(simcall);
  62   simcall->issuer->waiting_synchro = synchro;
  63 }
  64
  65 smx_activity_t SIMIX_file_read(smx_file_t fd, sg_size_t size, sg_host_t host)
  66 {
  67   /* check if the host is active */
  68   if (host->isOff())
  69     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
  70
  71   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
  72   synchro->host = host;
  73   synchro->surf_io = surf_host_read(host, fd->surf_file, size);
  74
  75   synchro->surf_io->setData(synchro);
  76   XBT_DEBUG("Create io synchro %p", synchro);
  77
  78   return synchro;
  79 }
  80
  81 //SIMIX FILE WRITE
  82 void simcall_HANDLER_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  83 {
  84   smx_activity_t synchro = SIMIX_file_write(fd,  size, host);
  85   synchro->simcalls.push_back(simcall);
  86   simcall->issuer->waiting_synchro = synchro;
  87 }
  88
  89 smx_activity_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host)
  90 {
  91   if (host->isOff())
  92     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
  93
  94   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
  95   synchro->host = host;
  96   synchro->surf_io = surf_host_write(host, fd->surf_file, size);
  97   synchro->surf_io->setData(synchro);
  98   XBT_DEBUG("Create io synchro %p", synchro);
  99
 100   return synchro;
 101 }
 102
 103 //SIMIX FILE OPEN
 104 void simcall_HANDLER_file_open(smx_simcall_t simcall, const char* fullpath, sg_host_t host)
 105 {
 106   smx_activity_t synchro = SIMIX_file_open(fullpath, host);
 107   synchro->simcalls.push_back(simcall);
 108   simcall->issuer->waiting_synchro = synchro;
 109 }
 110
 111 smx_activity_t SIMIX_file_open(const char* fullpath, sg_host_t host)
 112 {
 113   if (host->isOff())
 114     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
 115
 116   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
 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_activity_t synchro = SIMIX_file_close(fd, host);
 129   synchro->simcalls.push_back(simcall);
 130   simcall->issuer->waiting_synchro = synchro;
 131 }
 132
 133 smx_activity_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", host->cname());
 137
 138   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
 139   synchro->host = host;
 140   synchro->surf_io = surf_host_close(host, fd->surf_file);
 141   synchro->surf_io->setData(synchro);
 142   XBT_DEBUG("Create io synchro %p", synchro);
 143
 144   return synchro;
 145 }
 146
 147 //SIMIX FILE UNLINK
 148 int SIMIX_file_unlink(smx_file_t fd, sg_host_t host)
 149 {
 150   if (host->isOff())
 151     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
 152
 153   int res = surf_host_unlink(host, fd->surf_file);
 154   xbt_free(fd);
 155   return res;
 156 }
 157
 158 sg_size_t simcall_HANDLER_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 159 {
 160   return SIMIX_file_get_size(simcall->issuer, fd);
 161 }
 162
 163 sg_size_t SIMIX_file_get_size(smx_actor_t process, smx_file_t fd)
 164 {
 165   sg_host_t host = process->host;
 166   return  surf_host_get_size(host, fd->surf_file);
 167 }
 168
 169 sg_size_t simcall_HANDLER_file_tell(smx_simcall_t simcall, smx_file_t fd)
 170 {
 171   return SIMIX_file_tell(simcall->issuer, fd);
 172 }
 173
 174 sg_size_t SIMIX_file_tell(smx_actor_t process, smx_file_t fd)
 175 {
 176   sg_host_t host = process->host;
 177   return  surf_host_file_tell(host, fd->surf_file);
 178 }
 179
 180
 181 xbt_dynar_t simcall_HANDLER_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 182 {
 183   return SIMIX_file_get_info(simcall->issuer, fd);
 184 }
 185
 186 xbt_dynar_t SIMIX_file_get_info(smx_actor_t process, smx_file_t fd)
 187 {
 188   sg_host_t host = process->host;
 189   return  surf_host_get_info(host, fd->surf_file);
 190 }
 191
 192 int simcall_HANDLER_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 193 {
 194   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 195 }
 196
 197 int SIMIX_file_seek(smx_actor_t process, smx_file_t fd, sg_offset_t offset, int origin)
 198 {
 199   sg_host_t host = process->host;
 200   return  surf_host_file_seek(host, fd->surf_file, offset, origin);
 201 }
 202
 203 int simcall_HANDLER_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 204 {
 205   return SIMIX_file_move(simcall->issuer, file, fullpath);
 206 }
 207
 208 int SIMIX_file_move(smx_actor_t process, smx_file_t file, const char* fullpath)
 209 {
 210   sg_host_t host = process->host;
 211   return  surf_host_file_move(host, file->surf_file, fullpath);
 212 }
 213
 214 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 215   return surf_storage_get_properties(storage);
 216 }
 217
 218 const char* SIMIX_storage_get_name(smx_storage_t storage){
 219   return sg_storage_name(storage);
 220 }
 221
 222 void SIMIX_io_destroy(smx_activity_t synchro)
 223 {
 224   simgrid::kernel::activity::Io *io = static_cast<simgrid::kernel::activity::Io*>(synchro);
 225   XBT_DEBUG("Destroy synchro %p", synchro);
 226   if (io->surf_io)
 227     io->surf_io->unref();
 228   delete io;
 229 }
 230
 231 void SIMIX_io_finish(smx_activity_t synchro)
 232 {
 233   for (smx_simcall_t simcall : synchro->simcalls) {
 234     switch (synchro->state) {
 235       case SIMIX_DONE:
 236         /* do nothing, synchro done */
 237         break;
 238       case SIMIX_FAILED:
 239         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 240         break;
 241       case SIMIX_CANCELED:
 242         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 243         break;
 244       default:
 245         xbt_die("Internal error in SIMIX_io_finish: unexpected synchro state %d", static_cast<int>(synchro->state));
 246     }
 247
 248     if (simcall->issuer->host->isOff()) {
 249       simcall->issuer->context->iwannadie = 1;
 250     }
 251
 252     simcall->issuer->waiting_synchro = nullptr;
 253     SIMIX_simcall_answer(simcall);
 254   }
 255
 256   /* We no longer need it */
 257   SIMIX_io_destroy(synchro);
 258 }