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