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 #include "simgrid/s4u/Storage.hpp"
  13 #include "src/surf/FileImpl.hpp"
  14 #include "src/surf/StorageImpl.hpp"
  15
  16 #include <mc/mc.h>
  17
  18 #include "src/surf/surf_interface.hpp"
  19 #include "smx_private.h"
  20
  21 #include "src/kernel/activity/SynchroIo.hpp"
  22
  23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
  24
  25 //SIMIX FILE READ
  26 void simcall_HANDLER_file_read(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  27 {
  28   smx_activity_t synchro = SIMIX_file_read(fd, size, host);
  29   synchro->simcalls.push_back(simcall);
  30   simcall->issuer->waiting_synchro = synchro;
  31 }
  32
  33 smx_activity_t SIMIX_file_read(smx_file_t fd, sg_size_t size, sg_host_t host)
  34 {
  35   /* check if the host is active */
  36   if (host->isOff())
  37     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
  38
  39   simgrid::kernel::activity::IoImpl* synchro = new simgrid::kernel::activity::IoImpl();
  40   synchro->host = host;
  41   synchro->surf_io = surf_host_read(host, fd->surf_file, size);
  42
  43   synchro->surf_io->setData(synchro);
  44   XBT_DEBUG("Create io synchro %p", synchro);
  45
  46   return synchro;
  47 }
  48
  49 //SIMIX FILE WRITE
  50 void simcall_HANDLER_file_write(smx_simcall_t simcall, smx_file_t fd, sg_size_t size, sg_host_t host)
  51 {
  52   smx_activity_t synchro = SIMIX_file_write(fd,  size, host);
  53   synchro->simcalls.push_back(simcall);
  54   simcall->issuer->waiting_synchro = synchro;
  55 }
  56
  57 smx_activity_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host)
  58 {
  59   if (host->isOff())
  60     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
  61
  62   simgrid::kernel::activity::IoImpl* synchro = new simgrid::kernel::activity::IoImpl();
  63   synchro->host = host;
  64   synchro->surf_io = surf_host_write(host, fd->surf_file, size);
  65   synchro->surf_io->setData(synchro);
  66   XBT_DEBUG("Create io synchro %p", synchro);
  67
  68   return synchro;
  69 }
  70
  71 //SIMIX FILE OPEN
  72 void simcall_HANDLER_file_open(smx_simcall_t simcall, const char* mount, const char* path, sg_storage_t st)
  73 {
  74   smx_activity_t synchro = SIMIX_file_open(mount, path, st);
  75   synchro->simcalls.push_back(simcall);
  76   simcall->issuer->waiting_synchro = synchro;
  77 }
  78
  79 smx_activity_t SIMIX_file_open(const char* mount, const char* path, sg_storage_t st)
  80 {
  81   if (st->host()->isOff())
  82     THROWF(host_error, 0, "Host %s failed, you cannot call this function", st->host()->cname());
  83
  84   simgrid::kernel::activity::IoImpl* synchro = new simgrid::kernel::activity::IoImpl();
  85   synchro->host                              = st->host();
  86   synchro->surf_io                           = st->pimpl_->open(mount, path);
  87   synchro->surf_io->setData(synchro);
  88   XBT_DEBUG("Create io synchro %p", synchro);
  89
  90   return synchro;
  91 }
  92
  93 //SIMIX FILE CLOSE
  94 void simcall_HANDLER_file_close(smx_simcall_t simcall, smx_file_t fd, sg_host_t host)
  95 {
  96   smx_activity_t synchro = SIMIX_file_close(fd, host);
  97   synchro->simcalls.push_back(simcall);
  98   simcall->issuer->waiting_synchro = synchro;
  99 }
 100
 101 smx_activity_t SIMIX_file_close(smx_file_t fd, sg_host_t host)
 102 {
 103   if (host->isOff())
 104     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
 105
 106   simgrid::kernel::activity::IoImpl* synchro = new simgrid::kernel::activity::IoImpl();
 107   synchro->host = host;
 108   synchro->surf_io = surf_host_close(host, fd->surf_file);
 109   synchro->surf_io->setData(synchro);
 110   XBT_DEBUG("Create io synchro %p", synchro);
 111
 112   return synchro;
 113 }
 114
 115 //SIMIX FILE UNLINK
 116 int SIMIX_file_unlink(smx_file_t fd, sg_host_t host)
 117 {
 118   if (host->isOff())
 119     THROWF(host_error, 0, "Host %s failed, you cannot call this function", host->cname());
 120
 121   return surf_host_unlink(host, fd->surf_file);
 122 }
 123
 124 sg_size_t SIMIX_file_get_size(smx_file_t fd)
 125 {
 126   return fd->surf_file->size();
 127 }
 128
 129 sg_size_t SIMIX_file_tell(smx_file_t fd)
 130 {
 131   return fd->surf_file->tell();
 132 }
 133
 134 int SIMIX_file_seek(smx_file_t fd, sg_offset_t offset, int origin)
 135 {
 136   return fd->surf_file->seek(offset, origin);
 137 }
 138
 139 int simcall_HANDLER_file_move(smx_simcall_t simcall, smx_file_t file, const char* fullpath)
 140 {
 141   return SIMIX_file_move(simcall->issuer, file, fullpath);
 142 }
 143
 144 int SIMIX_file_move(smx_actor_t process, smx_file_t file, const char* fullpath)
 145 {
 146   sg_host_t host = process->host;
 147   return  surf_host_file_move(host, file->surf_file, fullpath);
 148 }
 149
 150 void SIMIX_io_destroy(smx_activity_t synchro)
 151 {
 152   simgrid::kernel::activity::IoImplPtr io = boost::static_pointer_cast<simgrid::kernel::activity::IoImpl>(synchro);
 153   XBT_DEBUG("Destroy synchro %p", synchro.get());
 154   if (io->surf_io)
 155     io->surf_io->unref();
 156 }
 157
 158 void SIMIX_io_finish(smx_activity_t synchro)
 159 {
 160   for (smx_simcall_t simcall : synchro->simcalls) {
 161     switch (synchro->state) {
 162       case SIMIX_DONE:
 163         /* do nothing, synchro done */
 164         break;
 165       case SIMIX_FAILED:
 166         SMX_EXCEPTION(simcall->issuer, io_error, 0, "IO failed");
 167         break;
 168       case SIMIX_CANCELED:
 169         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 170         break;
 171       default:
 172         xbt_die("Internal error in SIMIX_io_finish: unexpected synchro state %d", static_cast<int>(synchro->state));
 173     }
 174
 175     if (simcall->issuer->host->isOff()) {
 176       simcall->issuer->context->iwannadie = 1;
 177     }
 178
 179     simcall->issuer->waiting_synchro = nullptr;
 180     SIMIX_simcall_answer(simcall);
 181   }
 182
 183   /* We no longer need it */
 184   SIMIX_io_destroy(synchro);
 185 }