src/s4u/s4u_Io.cpp

   1 /* Copyright (c) 2018. 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 "src/simix/smx_io_private.hpp"
  10 #include "xbt/log.h"
  11 #include <string>
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_io, s4u_activity, "S4U asynchronous IOs");
  14
  15 namespace simgrid {
  16 namespace s4u {
  17
  18 Activity* Io::start()
  19 {
  20   Activity::set_remaining(size_);
  21   pimpl_ = simix::simcall([this] {
  22     return boost::static_pointer_cast<kernel::activity::IoImpl>(SIMIX_io_start(name_, size_, storage_, type_));
  23   });
  24   state_ = State::STARTED;
  25   return this;
  26 }
  27
  28 Activity* Io::cancel()
  29 {
  30   simgrid::simix::simcall([this] { dynamic_cast<kernel::activity::IoImpl*>(pimpl_.get())->cancel(); });
  31   state_ = State::CANCELED;
  32   return this;
  33 }
  34
  35 Activity* Io::wait()
  36 {
  37   simcall_io_wait(pimpl_);
  38   state_ = State::FINISHED;
  39   return this;
  40 }
  41
  42 Activity* Io::wait(double timeout)
  43 {
  44   THROW_UNIMPLEMENTED;
  45   return this;
  46 }
  47
  48 /** @brief Returns the amount of flops that remain to be done */
  49 double Io::get_remaining()
  50 {
  51   return simgrid::simix::simcall(
  52       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
  53 }
  54
  55 sg_size_t Io::get_performed_ioops()
  56 {
  57   return simgrid::simix::simcall(
  58       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_performed_ioops(); });
  59 }
  60
  61 void intrusive_ptr_release(simgrid::s4u::Io* i)
  62 {
  63   if (i->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
  64     std::atomic_thread_fence(std::memory_order_acquire);
  65     delete i;
  66   }
  67 }
  68
  69 void intrusive_ptr_add_ref(simgrid::s4u::Io* i)
  70 {
  71   i->refcount_.fetch_add(1, std::memory_order_relaxed);
  72 }
  73 } // namespace s4u
  74 } // namespace simgrid