1 /* Copyright (c) 2007-2022. The SimGrid Team. All rights reserved. */
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. */
6 #include <simgrid/Exception.hpp>
7 #include <simgrid/kernel/routing/NetPoint.hpp>
8 #include <simgrid/s4u/Engine.hpp>
9 #include <simgrid/s4u/Host.hpp>
12 #include "src/kernel/activity/IoImpl.hpp"
13 #include "src/kernel/actor/ActorImpl.hpp"
14 #include "src/kernel/actor/SimcallObserver.hpp"
15 #include "src/kernel/context/Context.hpp"
16 #include "src/kernel/resource/CpuImpl.hpp"
17 #include "src/kernel/resource/DiskImpl.hpp"
18 #include "src/mc/mc_replay.hpp"
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ker_io, kernel, "Kernel io-related synchronization");
28 piface_ = new s4u::Io(this);
29 actor::ActorImpl* self = actor::ActorImpl::self();
32 self->activities_.emplace_back(this);
36 IoImpl& IoImpl::set_sharing_penalty(double sharing_penalty)
38 sharing_penalty_ = sharing_penalty;
42 IoImpl& IoImpl::update_sharing_penalty(double sharing_penalty)
44 sharing_penalty_ = sharing_penalty;
45 surf_action_->set_sharing_penalty(sharing_penalty);
49 IoImpl& IoImpl::set_timeout(double timeout)
51 const s4u::Host* host = get_disk()->get_host();
52 timeout_detector_ = host->get_cpu()->sleep(timeout);
53 timeout_detector_->set_activity(this);
57 IoImpl& IoImpl::set_type(s4u::Io::OpType type)
63 IoImpl& IoImpl::set_size(sg_size_t size)
69 IoImpl& IoImpl::set_disk(resource::DiskImpl* disk)
75 IoImpl* IoImpl::start()
77 set_state(State::RUNNING);
79 disk_->get_host()->get_netpoint()->get_englobing_zone()->get_disk_model()->io_start(disk_, size_, type_);
80 surf_action_->set_sharing_penalty(sharing_penalty_);
81 surf_action_->set_activity(this);
82 set_start_time(surf_action_->get_start_time());
84 XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
91 performed_ioops_ = surf_action_->get_cost();
92 if (surf_action_->get_state() == resource::Action::State::FAILED) {
93 if (disk_ && not disk_->is_on())
94 set_state(State::FAILED);
96 set_state(State::CANCELED);
97 } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
98 if (surf_action_->get_remains() > 0.0) {
99 surf_action_->set_state(resource::Action::State::FAILED);
100 set_state(State::TIMEOUT);
102 set_state(State::DONE);
105 set_state(State::DONE);
109 if (timeout_detector_) {
110 timeout_detector_->unref();
111 timeout_detector_ = nullptr;
114 /* Answer all simcalls associated with the synchro */
117 void IoImpl::set_exception(actor::ActorImpl* issuer)
119 switch (get_state()) {
121 issuer->context_->set_wannadie();
122 static_cast<s4u::Io*>(get_iface())->complete(s4u::Activity::State::FAILED);
123 issuer->exception_ = std::make_exception_ptr(StorageFailureException(XBT_THROW_POINT, "Storage failed"));
125 case State::CANCELED:
126 issuer->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "I/O Canceled"));
129 issuer->exception_ = std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Timeouted"));
132 xbt_assert(get_state() == State::DONE, "Internal error in IoImpl::finish(): unexpected synchro state %s",
137 void IoImpl::finish()
139 XBT_DEBUG("IoImpl::finish() in state %s", get_state_str());
140 while (not simcalls_.empty()) {
141 smx_simcall_t simcall = simcalls_.front();
142 simcalls_.pop_front();
144 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
145 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
148 if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
149 continue; // if process handling comm is killed
151 handle_activity_waitany(simcall);
153 set_exception(simcall->issuer_);
155 simcall->issuer_->waiting_synchro_ = nullptr;
156 simcall->issuer_->simcall_answer();
160 } // namespace activity
161 } // namespace kernel
162 } // namespace simgrid