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. */
5 #include "src/kernel/activity/IoImpl.hpp"
7 #include "simgrid/Exception.hpp"
8 #include "simgrid/kernel/resource/Action.hpp"
9 #include "simgrid/s4u/Host.hpp"
10 #include "simgrid/s4u/Io.hpp"
11 #include "src/kernel/actor/SimcallObserver.hpp"
12 #include "src/kernel/resource/DiskImpl.hpp"
13 #include "src/mc/mc_replay.hpp"
14 #include "src/simix/smx_private.hpp"
15 #include "src/surf/cpu_interface.hpp"
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
25 piface_ = new s4u::Io(this);
28 IoImpl& IoImpl::set_timeout(double timeout)
30 const s4u::Host* host = get_disk()->get_host();
31 timeout_detector_ = host->pimpl_cpu->sleep(timeout);
32 timeout_detector_->set_activity(this);
36 IoImpl& IoImpl::set_type(s4u::Io::OpType type)
42 IoImpl& IoImpl::set_size(sg_size_t size)
48 IoImpl& IoImpl::set_disk(resource::DiskImpl* disk)
54 IoImpl* IoImpl::start()
56 state_ = State::RUNNING;
57 surf_action_ = disk_->io_start(size_, type_);
58 surf_action_->set_activity(this);
60 XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
67 performed_ioops_ = surf_action_->get_cost();
68 if (surf_action_->get_state() == resource::Action::State::FAILED) {
69 if (disk_ && not disk_->is_on())
70 state_ = State::FAILED;
72 state_ = State::CANCELED;
73 } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
74 if (surf_action_->get_remains() > 0.0) {
75 surf_action_->set_state(resource::Action::State::FAILED);
76 state_ = State::TIMEOUT;
85 if (timeout_detector_) {
86 timeout_detector_->unref();
87 timeout_detector_ = nullptr;
90 /* Answer all simcalls associated with the synchro */
96 XBT_DEBUG("IoImpl::finish() in state %s", to_c_str(state_));
97 while (not simcalls_.empty()) {
98 smx_simcall_t simcall = simcalls_.front();
99 simcalls_.pop_front();
101 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
102 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
105 if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
106 continue; // if process handling comm is killed
107 if (auto* observer = dynamic_cast<kernel::actor::IoWaitanySimcall*>(simcall->observer_)) { // simcall is a wait_any?
108 const auto& ios = observer->get_ios();
110 for (auto* io : ios) {
111 io->unregister_simcall(simcall);
113 if (simcall->timeout_cb_) {
114 simcall->timeout_cb_->remove();
115 simcall->timeout_cb_ = nullptr;
119 if (not MC_is_active() && not MC_record_replay_is_active()) {
120 auto element = std::find(ios.begin(), ios.end(), this);
121 int rank = element != ios.end() ? static_cast<int>(std::distance(ios.begin(), element)) : -1;
122 observer->set_result(rank);
128 simcall->issuer_->context_->set_wannadie();
129 simcall->issuer_->exception_ =
130 std::make_exception_ptr(StorageFailureException(XBT_THROW_POINT, "Storage failed"));
132 case State::CANCELED:
133 simcall->issuer_->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "I/O Canceled"));
136 simcall->issuer_->exception_ = std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Timeouted"));
139 xbt_assert(state_ == State::DONE, "Internal error in IoImpl::finish(): unexpected synchro state %s",
143 simcall->issuer_->waiting_synchro_ = nullptr;
144 simcall->issuer_->simcall_answer();
148 void IoImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<IoImpl*>& ios, double timeout)
151 issuer->simcall_.timeout_cb_ = nullptr;
153 issuer->simcall_.timeout_cb_ = simix::Timer::set(SIMIX_get_clock() + timeout, [issuer, &ios]() {
154 issuer->simcall_.timeout_cb_ = nullptr;
156 io->unregister_simcall(&issuer->simcall_);
157 // default result (-1) is set in actor::IoWaitanySimcall
158 issuer->simcall_answer();
162 for (auto* io : ios) {
163 /* associate this simcall to the the synchro */
164 io->simcalls_.push_back(&issuer->simcall_);
166 /* see if the synchro is already finished */
167 if (io->state_ != State::WAITING && io->state_ != State::RUNNING) {
174 } // namespace activity
175 } // namespace kernel
176 } // namespace simgrid