src/kernel/activity/IoImpl.cpp

   1 /* Copyright (c) 2007-2019. 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 "src/kernel/activity/IoImpl.hpp"
   7 #include "simgrid/kernel/resource/Action.hpp"
   8 #include "src/simix/smx_io_private.hpp"
   9 #include "src/surf/StorageImpl.hpp"
  10
  11 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_io);
  12 namespace simgrid {
  13 namespace kernel {
  14 namespace activity {
  15
  16 IoImpl::IoImpl(std::string name, surf::StorageImpl* storage) : ActivityImpl(std::move(name)), storage_(storage)
  17 {
  18   this->state_ = SIMIX_RUNNING;
  19
  20   XBT_DEBUG("Create io impl %p", this);
  21 }
  22
  23 IoImpl::~IoImpl()
  24 {
  25   if (surf_action_ != nullptr)
  26     surf_action_->unref();
  27   XBT_DEBUG("Destroy io %p", this);
  28 }
  29
  30 IoImpl* IoImpl::start(sg_size_t size, simgrid::s4u::Io::OpType type)
  31 {
  32   surf_action_ = storage_->io_start(size, type);
  33   surf_action_->set_data(this);
  34
  35   XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
  36   simgrid::kernel::activity::IoImpl::on_start(this);
  37
  38   return this;
  39 }
  40
  41 void IoImpl::cancel()
  42 {
  43   XBT_VERB("This exec %p is canceled", this);
  44   if (surf_action_ != nullptr)
  45     surf_action_->cancel();
  46   state_ = SIMIX_CANCELED;
  47 }
  48
  49 double IoImpl::get_remaining()
  50 {
  51   return surf_action_ ? surf_action_->get_remains() : 0;
  52 }
  53
  54 void IoImpl::post()
  55 {
  56   performed_ioops_ = surf_action_->get_cost();
  57   switch (surf_action_->get_state()) {
  58     case simgrid::kernel::resource::Action::State::FAILED:
  59       state_ = SIMIX_FAILED;
  60       break;
  61     case simgrid::kernel::resource::Action::State::FINISHED:
  62       state_ = SIMIX_DONE;
  63       break;
  64     default:
  65       THROW_IMPOSSIBLE;
  66       break;
  67   }
  68   on_completion(this);
  69
  70   SIMIX_io_finish(this);
  71 }
  72 /*************
  73  * Callbacks *
  74  *************/
  75 xbt::signal<void(IoImplPtr)> IoImpl::on_start;
  76 xbt::signal<void(IoImplPtr)> IoImpl::on_completion;
  77
  78 } // namespace activity
  79 } // namespace kernel
  80 } // namespace simgrid