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   Activity::set_remaining(size_);
  20   pimpl_ = simix::simcall([this] {
  21     return boost::static_pointer_cast<kernel::activity::IoImpl>(SIMIX_io_start(name_, size_, storage_, type_));
  22   });
  23   state_ = State::STARTED;
  24   return this;
  25 }
  26
  27 Activity* Io::cancel()
  28 {
  29   simgrid::simix::simcall([this] { dynamic_cast<kernel::activity::IoImpl*>(pimpl_.get())->cancel(); });
  30   state_ = State::CANCELED;
  31   return this;
  32 }
  33
  34 Activity* Io::wait()
  35 {
  36   simcall_io_wait(pimpl_);
  37   state_ = State::FINISHED;
  38   return this;
  39 }
  40
  41 Activity* Io::wait_for(double timeout)
  42 {
  43   THROW_UNIMPLEMENTED;
  44   return this;
  45 }
  46
  47 bool Io::test()
  48 {
  49   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
  50
  51   if (state_ == State::FINISHED)
  52     return true;
  53
  54   if (state_ == State::INITED)
  55     this->start();
  56
  57   THROW_UNIMPLEMENTED;
  58
  59   return false;
  60 }
  61
  62 /** @brief Returns the amount of flops that remain to be done */
  63 double Io::get_remaining()
  64 {
  65   return simgrid::simix::simcall(
  66       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
  67 }
  68
  69 sg_size_t Io::get_performed_ioops()
  70 {
  71   return simgrid::simix::simcall(
  72       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_performed_ioops(); });
  73 }
  74
  75 void intrusive_ptr_release(simgrid::s4u::Io* i)
  76 {
  77   if (i->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
  78     std::atomic_thread_fence(std::memory_order_acquire);
  79     delete i;
  80   }
  81 }
  82
  83 void intrusive_ptr_add_ref(simgrid::s4u::Io* i)
  84 {
  85   i->refcount_.fetch_add(1, std::memory_order_relaxed);
  86 }
  87 } // namespace s4u
  88 } // namespace simgrid