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