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