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