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/modelchecker.h>
9 #include <simgrid/s4u/Engine.hpp>
11 #include "src/kernel/activity/ExecImpl.hpp"
12 #include "src/kernel/actor/ActorImpl.hpp"
13 #include "src/kernel/actor/SimcallObserver.hpp"
14 #include "src/mc/mc_replay.hpp"
15 #include "src/surf/HostImpl.hpp"
16 #include "src/surf/cpu_interface.hpp"
18 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_process);
26 piface_ = new s4u::Exec(this);
27 actor::ActorImpl* self = actor::ActorImpl::self();
30 self->activities_.emplace_back(this);
34 ExecImpl& ExecImpl::set_host(s4u::Host* host)
36 hosts_.assign(1, host);
40 ExecImpl& ExecImpl::set_hosts(const std::vector<s4u::Host*>& hosts)
46 ExecImpl& ExecImpl::set_timeout(double timeout)
48 if (timeout >= 0 && not MC_is_active() && not MC_record_replay_is_active()) {
49 timeout_detector_.reset(hosts_.front()->get_cpu()->sleep(timeout));
50 timeout_detector_->set_activity(this);
55 ExecImpl& ExecImpl::set_flops_amount(double flops_amount)
57 flops_amounts_.assign(1, flops_amount);
61 ExecImpl& ExecImpl::set_flops_amounts(const std::vector<double>& flops_amounts)
63 flops_amounts_ = flops_amounts;
67 ExecImpl& ExecImpl::set_bytes_amounts(const std::vector<double>& bytes_amounts)
69 bytes_amounts_ = bytes_amounts;
74 ExecImpl* ExecImpl::start()
76 state_ = State::RUNNING;
77 if (not MC_is_active() && not MC_record_replay_is_active()) {
78 if (hosts_.size() == 1) {
79 surf_action_ = hosts_.front()->get_cpu()->execution_start(flops_amounts_.front(), bound_);
80 surf_action_->set_sharing_penalty(sharing_penalty_);
81 surf_action_->set_category(get_tracing_category());
83 // get the model from first host since we have only 1 by now
84 auto host_model = hosts_.front()->get_netpoint()->get_englobing_zone()->get_host_model();
85 surf_action_ = host_model->execute_parallel(hosts_, flops_amounts_.data(), bytes_amounts_.data(), -1);
87 surf_action_->set_activity(this);
88 start_time_ = surf_action_->get_start_time();
91 XBT_DEBUG("Create execute synchro %p: %s", this, get_cname());
95 double ExecImpl::get_seq_remaining_ratio()
97 return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains() / surf_action_->get_cost();
100 double ExecImpl::get_par_remaining_ratio()
102 // parallel task: their remain is already between 0 and 1
103 return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains();
106 ExecImpl& ExecImpl::set_bound(double bound)
112 ExecImpl& ExecImpl::set_sharing_penalty(double sharing_penalty)
114 sharing_penalty_ = sharing_penalty;
118 ExecImpl& ExecImpl::update_sharing_penalty(double sharing_penalty)
120 sharing_penalty_ = sharing_penalty;
121 surf_action_->set_sharing_penalty(sharing_penalty);
125 void ExecImpl::post()
127 xbt_assert(surf_action_ != nullptr);
128 if (std::any_of(hosts_.begin(), hosts_.end(), [](const s4u::Host* host) { return not host->is_on(); })) {
129 /* If one of the hosts running the synchro failed, notice it. This way, the asking
130 * process can be killed if it runs on that host itself */
131 state_ = State::FAILED;
132 } else if (surf_action_->get_state() == resource::Action::State::FAILED) {
133 /* If all the hosts are running the synchro didn't fail, then the synchro was canceled */
134 state_ = State::CANCELED;
135 } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
136 if (surf_action_->get_remains() > 0.0) {
137 surf_action_->set_state(resource::Action::State::FAILED);
138 state_ = State::TIMEOUT;
140 state_ = State::DONE;
143 state_ = State::DONE;
146 finish_time_ = surf_action_->get_finish_time();
149 timeout_detector_.reset();
151 actor_->activities_.remove(this);
154 if (state_ != State::FAILED && cb_id_ >= 0)
155 s4u::Host::on_state_change.disconnect(cb_id_);
156 /* Answer all simcalls associated with the synchro */
160 void ExecImpl::finish()
162 XBT_DEBUG("ExecImpl::finish() in state %s", to_c_str(state_));
163 while (not simcalls_.empty()) {
164 smx_simcall_t simcall = simcalls_.front();
165 simcalls_.pop_front();
167 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
168 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
171 if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
172 continue; // if process handling comm is killed
174 dynamic_cast<kernel::actor::ExecutionWaitanySimcall*>(simcall->observer_)) { // simcall is a wait_any?
175 const auto& execs = observer->get_execs();
177 for (auto* exec : execs) {
178 exec->unregister_simcall(simcall);
180 if (simcall->timeout_cb_) {
181 simcall->timeout_cb_->remove();
182 simcall->timeout_cb_ = nullptr;
186 if (not MC_is_active() && not MC_record_replay_is_active()) {
187 auto element = std::find(execs.begin(), execs.end(), this);
188 int rank = element != execs.end() ? static_cast<int>(std::distance(execs.begin(), element)) : -1;
189 observer->set_result(rank);
194 piface_->complete(s4u::Activity::State::FAILED);
195 if (simcall->issuer_->get_host()->is_on())
196 simcall->issuer_->exception_ = std::make_exception_ptr(HostFailureException(XBT_THROW_POINT, "Host failed"));
197 else /* else, the actor will be killed with no possibility to survive */
198 simcall->issuer_->context_->set_wannadie();
201 case State::CANCELED:
202 simcall->issuer_->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Execution Canceled"));
206 simcall->issuer_->exception_ = std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Timeouted"));
210 xbt_assert(state_ == State::DONE, "Internal error in ExecImpl::finish(): unexpected synchro state %s",
214 simcall->issuer_->waiting_synchro_ = nullptr;
215 /* Fail the process if the host is down */
216 if (simcall->issuer_->get_host()->is_on())
217 simcall->issuer_->simcall_answer();
219 simcall->issuer_->context_->set_wannadie();
223 ActivityImpl* ExecImpl::migrate(s4u::Host* to)
225 if (not MC_is_active() && not MC_record_replay_is_active()) {
226 resource::Action* old_action = this->surf_action_;
227 resource::Action* new_action = to->get_cpu()->execution_start(old_action->get_cost(), old_action->get_user_bound());
228 new_action->set_remains(old_action->get_remains());
229 new_action->set_activity(this);
230 new_action->set_sharing_penalty(old_action->get_sharing_penalty());
231 new_action->set_user_bound(old_action->get_user_bound());
233 old_action->set_activity(nullptr);
234 old_action->cancel();
236 this->surf_action_ = new_action;
239 on_migration(*this, to);
243 void ExecImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<ExecImpl*>& execs, double timeout)
246 issuer->simcall_.timeout_cb_ = nullptr;
248 issuer->simcall_.timeout_cb_ = timer::Timer::set(s4u::Engine::get_clock() + timeout, [issuer, &execs]() {
249 issuer->simcall_.timeout_cb_ = nullptr;
250 for (auto* exec : execs)
251 exec->unregister_simcall(&issuer->simcall_);
252 // default result (-1) is set in actor::ExecutionWaitanySimcall
253 issuer->simcall_answer();
257 for (auto* exec : execs) {
258 /* associate this simcall to the the synchro */
259 exec->simcalls_.push_back(&issuer->simcall_);
260 /* see if the synchro is already finished */
261 if (exec->state_ != State::WAITING && exec->state_ != State::RUNNING) {
271 xbt::signal<void(ExecImpl const&, s4u::Host*)> ExecImpl::on_migration;
273 } // namespace activity
274 } // namespace kernel
275 } // namespace simgrid