src/s4u/s4u_Io.cpp

   1 /* Copyright (c) 2018-2021. 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 "simgrid/s4u/Actor.hpp"
   7 #include "simgrid/s4u/Disk.hpp"
   8 #include "simgrid/s4u/Io.hpp"
   9 #include "src/kernel/activity/IoImpl.hpp"
  10 #include "src/kernel/actor/ActorImpl.hpp"
  11 #include "xbt/log.h"
  12
  13 namespace simgrid {
  14 namespace s4u {
  15 xbt::signal<void(Io const&)> Io::on_start;
  16 xbt::signal<void(Io const&)> Io::on_completion;
  17
  18 Io::Io()
  19 {
  20   pimpl_ = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
  21 }
  22
  23 IoPtr Io::init()
  24 {
  25  return IoPtr(new Io());
  26 }
  27
  28 Io* Io::start()
  29 {
  30   kernel::actor::simcall(
  31       [this] { (*boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)).set_name(get_name()).start(); });
  32
  33   if (suspended_)
  34     pimpl_->suspend();
  35
  36   state_ = State::STARTED;
  37   on_start(*this);
  38   return this;
  39 }
  40
  41 Io* Io::cancel()
  42 {
  43   kernel::actor::simcall([this] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->cancel(); });
  44   state_ = State::CANCELED;
  45   on_completion(*this);
  46   return this;
  47 }
  48
  49 Io* Io::wait()
  50 {
  51   return this->wait_for(-1);
  52 }
  53
  54 Io* Io::wait_for(double timeout)
  55 {
  56   if (state_ == State::INITED)
  57     vetoable_start();
  58
  59   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
  60   kernel::actor::simcall_blocking([this, issuer, timeout] { this->get_impl()->wait_for(issuer, timeout); });
  61   state_ = State::FINISHED;
  62   this->release_dependencies();
  63
  64   on_completion(*this);
  65   return this;
  66 }
  67
  68 IoPtr Io::set_disk(sg_disk_t disk)
  69 {
  70   xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set disk once the Io is started");
  71
  72   kernel::actor::simcall(
  73       [this, disk] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_disk(disk->get_impl()); });
  74
  75   // Setting the disk may allow to start the activity, let's try
  76   if (state_ == State::STARTING)
  77     vetoable_start();
  78
  79  return this;
  80 }
  81
  82 IoPtr Io::set_size(sg_size_t size)
  83 {
  84   xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
  85   kernel::actor::simcall(
  86       [this, size] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_size(size); });
  87   Activity::set_remaining(size);
  88   return this;
  89 }
  90
  91 IoPtr Io::set_op_type(OpType type)
  92 {
  93   xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
  94   kernel::actor::simcall(
  95       [this, type] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_type(type); });
  96   return this;
  97 }
  98
  99 /** @brief Returns the amount of flops that remain to be done */
 100 double Io::get_remaining() const
 101 {
 102   return kernel::actor::simcall(
 103       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
 104 }
 105
 106 sg_size_t Io::get_performed_ioops() const
 107 {
 108   return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_performed_ioops();
 109 }
 110
 111 bool Io::is_assigned() const
 112 {
 113   return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_disk() != nullptr;
 114 }
 115
 116 } // namespace s4u
 117 } // namespace simgrid