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