src/s4u/s4u_Io.cpp

   1 /* Copyright (c) 2018-2019. 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 "simgrid/s4u/Io.hpp"
   7 #include "simgrid/s4u/Storage.hpp"
   8 #include "src/kernel/activity/IoImpl.hpp"
   9 #include "xbt/log.h"
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_io, s4u_activity, "S4U asynchronous IOs");
  12
  13 namespace simgrid {
  14 namespace s4u {
  15
  16 Io::Io(sg_storage_t storage, sg_size_t size, OpType type) : Activity(), storage_(storage), size_(size), type_(type)
  17 {
  18   Activity::set_remaining(size_);
  19   pimpl_ = simix::simcall(
  20       [this] { return kernel::activity::IoImplPtr(new kernel::activity::IoImpl(name_, storage_->get_impl())); });
  21 }
  22
  23 Io* Io::start()
  24 {
  25   simix::simcall([this] { static_cast<kernel::activity::IoImpl*>(pimpl_.get())->start(size_, type_); });
  26   state_ = State::STARTED;
  27   return this;
  28 }
  29
  30 Io* Io::cancel()
  31 {
  32   simgrid::simix::simcall([this] { static_cast<kernel::activity::IoImpl*>(pimpl_.get())->cancel(); });
  33   state_ = State::CANCELED;
  34   return this;
  35 }
  36
  37 Io* Io::wait()
  38 {
  39   simcall_io_wait(pimpl_);
  40   state_ = State::FINISHED;
  41   return this;
  42 }
  43
  44 Io* Io::wait_for(double)
  45 {
  46   THROW_UNIMPLEMENTED;
  47   return this;
  48 }
  49
  50 bool Io::test()
  51 {
  52   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
  53
  54   if (state_ == State::FINISHED)
  55     return true;
  56
  57   if (state_ == State::INITED)
  58     this->start();
  59
  60   THROW_UNIMPLEMENTED;
  61
  62   return false;
  63 }
  64
  65 /** @brief Returns the amount of flops that remain to be done */
  66 double Io::get_remaining()
  67 {
  68   return simgrid::simix::simcall(
  69       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
  70 }
  71
  72 sg_size_t Io::get_performed_ioops()
  73 {
  74   return simgrid::simix::simcall(
  75       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_performed_ioops(); });
  76 }
  77
  78 void intrusive_ptr_release(simgrid::s4u::Io* i)
  79 {
  80   if (i->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
  81     std::atomic_thread_fence(std::memory_order_acquire);
  82     delete i;
  83   }
  84 }
  85
  86 void intrusive_ptr_add_ref(simgrid::s4u::Io* i)
  87 {
  88   i->refcount_.fetch_add(1, std::memory_order_relaxed);
  89 }
  90 } // namespace s4u
  91 } // namespace simgrid