src/simix/smx_io.cpp

   1 /* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include <xbt/ex.hpp>
   7 #include <xbt/sysdep.h>
   8 #include <xbt/log.h>
   9 #include <xbt/dict.h>
  10
  11 #include "simgrid/s4u/Host.hpp"
  12
  13 #include <mc/mc.h>
  14
  15 #include "src/surf/surf_interface.hpp"
  16 #include "smx_private.h"
  17
  18 #include "src/kernel/activity/SynchroIo.hpp"
  19
  20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
  21
  22 /**
  23  * \brief Internal function to create a SIMIX storage.
  24  * \param name name of the storage to create
  25  * \param storage the SURF storage to encapsulate
  26  * \param data some user data (may be nullptr)
  27  */
  28 smx_storage_t SIMIX_storage_create(const char *name, void *storage, void *data)
  29 {
  30   smx_storage_priv_t smx_storage = xbt_new0(s_smx_storage_priv_t, 1);
  31
  32   smx_storage->data = data;
  33
  34   /* Update global variables */
  35   xbt_lib_set(storage_lib,name,SIMIX_STORAGE_LEVEL,smx_storage);
  36   return xbt_lib_get_elm_or_null(storage_lib, name);
  37 }
  38
  39 /**
  40  * \brief Internal function to destroy a SIMIX storage.
  41  *
  42  * \param s the host to destroy (a smx_storage_t)
  43  */
  44 void SIMIX_storage_destroy(void *s)
  45 {
  46   smx_storage_priv_t storage = static_cast<smx_storage_priv_t>(s);
  47
  48   xbt_assert((storage != nullptr), "Invalid parameters");
  49   if (storage->data)
  50     free(storage->data);
  51
  52   /* Clean storage structure */
  53   free(storage);
  54 }
  55
  56 //SIMIX FILE READ
  57 void simcall_HANDLER_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  58 {
  59   smx_activity_t synchro = SIMIX_file_read(fd, size, host);
  60   synchro->simcalls.push_back(simcall);
  61   simcall->issuer->waiting_synchro = synchro;
  62 }
  63
  64 smx_activity_t SIMIX_file_read(smx_file_t fd, sg_size_t size, sg_host_t host)
  65 {
  66   /* check if the host is active */
  67   if (host->isOff())
  68     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
  69
  70   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
  71   synchro->host = host;
  72   synchro->surf_io = surf_host_read(host, fd->surf_file, size);
  73
  74   synchro->surf_io->setData(synchro);
  75   XBT_DEBUG("Create io synchro %p", synchro);
  76
  77   return synchro;
  78 }
  79
  80 //SIMIX FILE WRITE
  81 void simcall_HANDLER_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  82 {
  83   smx_activity_t synchro = SIMIX_file_write(fd,  size, host);
  84   synchro->simcalls.push_back(simcall);
  85   simcall->issuer->waiting_synchro = synchro;
  86 }
  87
  88 smx_activity_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host)
  89 {
  90   if (host->isOff())
  91     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
  92
  93   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
  94   synchro->host = host;
  95   synchro->surf_io = surf_host_write(host, fd->surf_file, size);
  96   synchro->surf_io->setData(synchro);
  97   XBT_DEBUG("Create io synchro %p", synchro);
  98
  99   return synchro;
 100 }
 101
 102 //SIMIX FILE OPEN
 103 void simcall_HANDLER_file_open(smx_simcall_t simcall, const char* fullpath, sg_host_t host)
 104 {
 105   smx_activity_t synchro = SIMIX_file_open(fullpath, host);
 106   synchro->simcalls.push_back(simcall);
 107   simcall->issuer->waiting_synchro = synchro;
 108 }
 109
 110 smx_activity_t SIMIX_file_open(const char* fullpath, sg_host_t host)
 111 {
 112   if (host->isOff())
 113     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
 114
 115   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
 116   synchro->host = host;
 117   synchro->surf_io = surf_host_open(host, fullpath);
 118   synchro->surf_io->setData(synchro);
 119   XBT_DEBUG("Create io synchro %p", synchro);
 120
 121   return synchro;
 122 }
 123
 124 //SIMIX FILE CLOSE
 125 void simcall_HANDLER_file_close(smx_simcall_t simcall, smx_file_t fd, sg_host_t host)
 126 {
 127   smx_activity_t synchro = SIMIX_file_close(fd, host);
 128   synchro->simcalls.push_back(simcall);
 129   simcall->issuer->waiting_synchro = synchro;
 130 }
 131
 132 smx_activity_t SIMIX_file_close(smx_file_t fd, sg_host_t host)
 133 {
 134   if (host->isOff())
 135     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
 136
 137   simgrid::kernel::activity::Io *synchro = new simgrid::kernel::activity::Io();
 138   synchro->host = host;
 139   synchro->surf_io = surf_host_close(host, fd->surf_file);
 140   synchro->surf_io->setData(synchro);
 141   XBT_DEBUG("Create io synchro %p", synchro);
 142
 143   return synchro;
 144 }
 145
 146 //SIMIX FILE UNLINK
 147 int SIMIX_file_unlink(smx_file_t fd, sg_host_t host)
 148 {
 149   if (host->isOff())
 150     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
 151
 152   int res = surf_host_unlink(host, fd->surf_file);
 153   xbt_free(fd);
 154   return res;
 155 }
 156
 157 sg_size_t simcall_HANDLER_file_get_size(smx_simcall_t simcall, smx_file_t fd)
 158 {
 159   return SIMIX_file_get_size(simcall->issuer, fd);
 160 }
 161
 162 sg_size_t SIMIX_file_get_size(smx_actor_t process, smx_file_t fd)
 163 {
 164   sg_host_t host = process->host;
 165   return  surf_host_get_size(host, fd->surf_file);
 166 }
 167
 168 sg_size_t simcall_HANDLER_file_tell(smx_simcall_t simcall, smx_file_t fd)
 169 {
 170   return SIMIX_file_tell(simcall->issuer, fd);
 171 }
 172
 173 sg_size_t SIMIX_file_tell(smx_actor_t process, smx_file_t fd)
 174 {
 175   sg_host_t host = process->host;
 176   return  surf_host_file_tell(host, fd->surf_file);
 177 }
 178
 179
 180 xbt_dynar_t simcall_HANDLER_file_get_info(smx_simcall_t simcall, smx_file_t fd)
 181 {
 182   return SIMIX_file_get_info(simcall->issuer, fd);
 183 }
 184
 185 xbt_dynar_t SIMIX_file_get_info(smx_actor_t process, smx_file_t fd)
 186 {
 187   sg_host_t host = process->host;
 188   return  surf_host_get_info(host, fd->surf_file);
 189 }
 190
 191 int simcall_HANDLER_file_seek(smx_simcall_t simcall, smx_file_t fd, sg_offset_t offset, int origin)
 192 {
 193   return SIMIX_file_seek(simcall->issuer, fd, offset, origin);
 194 }
 195
 196 int SIMIX_file_seek(smx_actor_t process, smx_file_t fd, sg_offset_t offset, int origin)
 197 {
 198   sg_host_t host = process->host;
 199   return  surf_host_file_seek(host, fd->surf_file, offset, origin);
 200 }
 201
 202 int simcall_HANDLER_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 203 {
 204   return SIMIX_file_move(simcall->issuer, file, fullpath);
 205 }
 206
 207 int SIMIX_file_move(smx_actor_t process, smx_file_t file, const char* fullpath)
 208 {
 209   sg_host_t host = process->host;
 210   return  surf_host_file_move(host, file->surf_file, fullpath);
 211 }
 212
 213 xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage){
 214   return surf_storage_get_properties(storage);
 215 }
 216
 217 const char* SIMIX_storage_get_name(smx_storage_t storage){
 218   return sg_storage_name(storage);
 219 }
 220
 221 void SIMIX_io_destroy(smx_activity_t synchro)
 222 {
 223   simgrid::kernel::activity::Io *io = static_cast<simgrid::kernel::activity::Io*>(synchro);
 224   XBT_DEBUG("Destroy synchro %p", synchro);
 225   if (io->surf_io)
 226     io->surf_io->unref();
 227   delete io;
 228 }
 229
 230 void SIMIX_io_finish(smx_activity_t synchro)
 231 {
 232   for (smx_simcall_t simcall : synchro->simcalls) {
 233     switch (synchro->state) {
 234       case SIMIX_DONE:
 235         /* do nothing, synchro done */
 236         break;
 237       case SIMIX_FAILED:
 238         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 239         break;
 240       case SIMIX_CANCELED:
 241         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 242         break;
 243       default:
 244         xbt_die("Internal error in SIMIX_io_finish: unexpected synchro state %d", static_cast<int>(synchro->state));
 245     }
 246
 247     if (simcall->issuer->host->isOff()) {
 248       simcall->issuer->context->iwannadie = 1;
 249     }
 250
 251     simcall->issuer->waiting_synchro = nullptr;
 252     SIMIX_simcall_answer(simcall);
 253   }
 254
 255   /* We no longer need it */
 256   SIMIX_io_destroy(synchro);
 257 }