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