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
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_io, s4u_activity, "S4U asynchronous IOs");
  13
  14 namespace simgrid {
  15 namespace s4u {
  16
  17 Activity* Io::start()
  18 {
  19   pimpl_ = simix::simcall([this] { return SIMIX_io_start(name_, size_, storage_, type_); });
  20   state_ = State::STARTED;
  21   return this;
  22 }
  23
  24 Activity* Io::cancel()
  25 {
  26   simgrid::simix::simcall([this] { dynamic_cast<kernel::activity::IoImpl*>(pimpl_.get())->cancel(); });
  27   state_ = State::CANCELED;
  28   return this;
  29 }
  30
  31 Activity* Io::wait()
  32 {
  33   simcall_io_wait(pimpl_);
  34   state_ = State::FINISHED;
  35   return this;
  36 }
  37
  38 Activity* Io::wait(double timeout)
  39 {
  40   THROW_UNIMPLEMENTED;
  41   return this;
  42 }
  43
  44 /** @brief Returns the amount of flops that remain to be done */
  45 double Io::get_remaining()
  46 {
  47   return simgrid::simix::simcall(
  48       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
  49 }
  50
  51 sg_size_t Io::get_performed_ioops()
  52 {
  53   return simgrid::simix::simcall(
  54       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_performed_ioops(); });
  55 }
  56
  57 IoPtr Io::set_io_type(OpType type)
  58 {
  59   xbt_assert(state_ == State::INITED, "Cannot change the name of an exec after its start");
  60   type_ = type;
  61   return this;
  62 }
  63
  64 void intrusive_ptr_release(simgrid::s4u::Io* i)
  65 {
  66   if (i->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
  67     std::atomic_thread_fence(std::memory_order_acquire);
  68     delete i;
  69   }
  70 }
  71
  72 void intrusive_ptr_add_ref(simgrid::s4u::Io* i)
  73 {
  74   i->refcount_.fetch_add(1, std::memory_order_relaxed);
  75 }
  76 } // namespace s4u
  77 } // namespace simgrid