Logo AND Algorithmique Numérique Distribuée

Public GIT Repository
cleaning the actor twice seems somewhat overplayed
[simgrid.git] / 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_ = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
20 }
21
22 Io* Io::start()
23 {
24   simix::simcall([this] {
25     boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)
26         ->set_name(name_)
27         ->set_storage(storage_->get_impl())
28         ->set_size(size_)
29         ->set_type(type_)
30         ->start();
31   });
32   state_ = State::STARTED;
33   return this;
34 }
35
36 Io* Io::cancel()
37 {
38   simgrid::simix::simcall([this] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->cancel(); });
39   state_ = State::CANCELED;
40   return this;
41 }
42
43 Io* Io::wait()
44 {
45   simcall_io_wait(pimpl_);
46   state_ = State::FINISHED;
47   return this;
48 }
49
50 Io* Io::wait_for(double)
51 {
52   THROW_UNIMPLEMENTED;
53 }
54
55 bool Io::test()
56 {
57   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
58
59   if (state_ == State::FINISHED)
60     return true;
61
62   if (state_ == State::INITED)
63     this->start();
64
65   THROW_UNIMPLEMENTED;
66
67   // return false
68 }
69
70 /** @brief Returns the amount of flops that remain to be done */
71 double Io::get_remaining()
72 {
73   return simix::simcall(
74       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
75 }
76
77 sg_size_t Io::get_performed_ioops()
78 {
79   return simix::simcall(
80       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_performed_ioops(); });
81 }
82
83 void intrusive_ptr_release(simgrid::s4u::Io* i)
84 {
85   if (i->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
86     std::atomic_thread_fence(std::memory_order_acquire);
87     delete i;
88   }
89 }
90
91 void intrusive_ptr_add_ref(simgrid::s4u::Io* i)
92 {
93   i->refcount_.fetch_add(1, std::memory_order_relaxed);
94 }
95 } // namespace s4u
96 } // namespace simgrid