1 /* Copyright (c) 2007-2021. 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(simix_io, simix, "Logging specific to SIMIX (io)");
28 piface_ = new s4u::Io(this);
31 IoImpl& IoImpl::set_sharing_penalty(double sharing_penalty)
33 sharing_penalty_ = sharing_penalty;
37 IoImpl& IoImpl::update_sharing_penalty(double sharing_penalty)
39 sharing_penalty_ = sharing_penalty;
40 surf_action_->set_sharing_penalty(sharing_penalty);
44 IoImpl& IoImpl::set_timeout(double timeout)
46 const s4u::Host* host = get_disk()->get_host();
47 timeout_detector_ = host->get_cpu()->sleep(timeout);
48 timeout_detector_->set_activity(this);
52 IoImpl& IoImpl::set_type(s4u::Io::OpType type)
58 IoImpl& IoImpl::set_size(sg_size_t size)
64 IoImpl& IoImpl::set_disk(resource::DiskImpl* disk)
70 IoImpl* IoImpl::start()
72 state_ = State::RUNNING;
74 disk_->get_host()->get_netpoint()->get_englobing_zone()->get_disk_model()->io_start(disk_, size_, type_);
75 surf_action_->set_sharing_penalty(sharing_penalty_);
76 surf_action_->set_activity(this);
78 XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
85 performed_ioops_ = surf_action_->get_cost();
86 if (surf_action_->get_state() == resource::Action::State::FAILED) {
87 if (disk_ && not disk_->is_on())
88 state_ = State::FAILED;
90 state_ = State::CANCELED;
91 } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
92 if (surf_action_->get_remains() > 0.0) {
93 surf_action_->set_state(resource::Action::State::FAILED);
94 state_ = State::TIMEOUT;
103 if (timeout_detector_) {
104 timeout_detector_->unref();
105 timeout_detector_ = nullptr;
108 /* Answer all simcalls associated with the synchro */
111 void IoImpl::set_exception(actor::ActorImpl* issuer)
115 issuer->context_->set_wannadie();
116 piface_->complete(s4u::Activity::State::FAILED);
117 issuer->exception_ = std::make_exception_ptr(StorageFailureException(XBT_THROW_POINT, "Storage failed"));
119 case State::CANCELED:
120 issuer->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "I/O Canceled"));
123 issuer->exception_ = std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Timeouted"));
126 xbt_assert(state_ == State::DONE, "Internal error in IoImpl::finish(): unexpected synchro state %s",
131 void IoImpl::finish()
133 XBT_DEBUG("IoImpl::finish() in state %s", to_c_str(state_));
134 while (not simcalls_.empty()) {
135 smx_simcall_t simcall = simcalls_.front();
136 simcalls_.pop_front();
138 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
139 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
142 if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
143 continue; // if process handling comm is killed
144 if (auto* observer = dynamic_cast<kernel::actor::IoWaitanySimcall*>(simcall->observer_)) { // simcall is a wait_any?
145 const auto& ios = observer->get_ios();
147 for (auto* io : ios) {
148 io->unregister_simcall(simcall);
150 if (simcall->timeout_cb_) {
151 simcall->timeout_cb_->remove();
152 simcall->timeout_cb_ = nullptr;
156 if (not MC_is_active() && not MC_record_replay_is_active()) {
157 auto element = std::find(ios.begin(), ios.end(), this);
158 int rank = element != ios.end() ? static_cast<int>(std::distance(ios.begin(), element)) : -1;
159 observer->set_result(rank);
163 set_exception(simcall->issuer_);
165 simcall->issuer_->waiting_synchro_ = nullptr;
166 simcall->issuer_->simcall_answer();
170 void IoImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<IoImpl*>& ios, double timeout)
173 issuer->simcall_.timeout_cb_ = nullptr;
175 issuer->simcall_.timeout_cb_ = timer::Timer::set(s4u::Engine::get_clock() + timeout, [issuer, &ios]() {
176 issuer->simcall_.timeout_cb_ = nullptr;
178 io->unregister_simcall(&issuer->simcall_);
179 // default result (-1) is set in actor::IoWaitanySimcall
180 issuer->simcall_answer();
184 for (auto* io : ios) {
185 /* associate this simcall to the the synchro */
186 io->simcalls_.push_back(&issuer->simcall_);
188 /* see if the synchro is already finished */
189 if (io->state_ != State::WAITING && io->state_ != State::RUNNING) {
196 } // namespace activity
197 } // namespace kernel
198 } // namespace simgrid