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/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/kernel/resource/CpuImpl.hpp"
15 #include "src/mc/mc_replay.hpp"
16 #include "src/surf/HostImpl.hpp"
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ker_cpu, kernel, "Kernel cpu-related synchronization");
20 namespace simgrid::kernel::activity {
24 piface_ = new s4u::Exec(this);
25 actor::ActorImpl* self = actor::ActorImpl::self();
28 self->activities_.emplace_back(this);
32 ExecImpl& ExecImpl::set_host(s4u::Host* host)
34 ActivityImpl::set_hosts({host});
38 ExecImpl& ExecImpl::set_hosts(const std::vector<s4u::Host*>& hosts)
40 ActivityImpl::set_hosts(hosts);
44 ExecImpl& ExecImpl::set_timeout(double timeout)
46 if (timeout >= 0 && not MC_is_active() && not MC_record_replay_is_active()) {
47 timeout_detector_.reset(get_host()->get_cpu()->sleep(timeout));
48 timeout_detector_->set_activity(this);
53 ExecImpl& ExecImpl::set_flops_amount(double flops_amount)
55 flops_amounts_.assign(1, flops_amount);
59 ExecImpl& ExecImpl::set_flops_amounts(const std::vector<double>& flops_amounts)
61 flops_amounts_ = flops_amounts;
65 ExecImpl& ExecImpl::set_bytes_amounts(const std::vector<double>& bytes_amounts)
67 bytes_amounts_ = bytes_amounts;
71 ExecImpl& ExecImpl::set_thread_count(int thread_count)
73 thread_count_ = thread_count;
78 ExecImpl* ExecImpl::start()
80 set_state(State::RUNNING);
81 if (not MC_is_active() && not MC_record_replay_is_active()) {
82 if (get_hosts().size() == 1) {
83 if (thread_count_ == 1) {
84 surf_action_ = get_host()->get_cpu()->execution_start(flops_amounts_.front(), bound_);
85 surf_action_->set_sharing_penalty(sharing_penalty_);
87 auto host_model = get_host()->get_netpoint()->get_englobing_zone()->get_host_model();
88 surf_action_ = host_model->execute_thread(get_host(), flops_amounts_.front(), thread_count_);
90 surf_action_->set_category(get_tracing_category());
92 // get the model from first host since we have only 1 by now
93 auto host_model = get_host()->get_netpoint()->get_englobing_zone()->get_host_model();
94 surf_action_ = host_model->execute_parallel(get_hosts(), flops_amounts_.data(), bytes_amounts_.data(), -1);
96 surf_action_->set_activity(this);
97 set_start_time(surf_action_->get_start_time());
100 XBT_DEBUG("Create execute synchro %p: %s", this, get_cname());
104 double ExecImpl::get_remaining() const
106 if (get_state() == State::WAITING || get_state() == State::FAILED)
107 return flops_amounts_.front();
108 return ActivityImpl::get_remaining();
111 double ExecImpl::get_seq_remaining_ratio()
113 if (get_state() == State::WAITING)
115 return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains() / surf_action_->get_cost();
118 double ExecImpl::get_par_remaining_ratio()
120 // parallel task: their remain is already between 0 and 1
121 if (get_state() == State::WAITING)
123 return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains();
126 ExecImpl& ExecImpl::set_bound(double bound)
132 ExecImpl& ExecImpl::set_sharing_penalty(double sharing_penalty)
134 sharing_penalty_ = sharing_penalty;
138 ExecImpl& ExecImpl::update_sharing_penalty(double sharing_penalty)
140 sharing_penalty_ = sharing_penalty;
141 surf_action_->set_sharing_penalty(sharing_penalty);
145 void ExecImpl::post()
147 xbt_assert(surf_action_ != nullptr);
148 if (auto const& hosts = get_hosts();
149 std::any_of(hosts.begin(), hosts.end(), [](const s4u::Host* host) { return not host->is_on(); })) {
150 /* If one of the hosts running the synchro failed, notice it. This way, the asking
151 * process can be killed if it runs on that host itself */
152 set_state(State::FAILED);
153 } else if (surf_action_->get_state() == resource::Action::State::FAILED) {
154 /* If all the hosts are running the synchro didn't fail, then the synchro was canceled */
155 set_state(State::CANCELED);
156 } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
157 if (surf_action_->get_remains() > 0.0) {
158 surf_action_->set_state(resource::Action::State::FAILED);
159 set_state(State::TIMEOUT);
161 set_state(State::DONE);
164 set_state(State::DONE);
168 timeout_detector_.reset();
169 if (get_actor() != nullptr) {
170 get_actor()->activities_.remove(this);
172 if (get_state() != State::FAILED && cb_id_ >= 0)
173 s4u::Host::on_state_change.disconnect(cb_id_);
174 /* Answer all simcalls associated with the synchro */
178 void ExecImpl::set_exception(actor::ActorImpl* issuer)
180 switch (get_state()) {
182 static_cast<s4u::Exec*>(get_iface())->complete(s4u::Activity::State::FAILED);
183 if (issuer->get_host()->is_on())
184 issuer->exception_ = std::make_exception_ptr(HostFailureException(XBT_THROW_POINT, "Host failed"));
185 else /* else, the actor will be killed with no possibility to survive */
186 issuer->set_wannadie();
189 case State::CANCELED:
190 issuer->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Execution Canceled"));
194 issuer->exception_ = std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Timeouted"));
198 xbt_assert(get_state() == State::DONE, "Internal error in ExecImpl::finish(): unexpected synchro state %s",
202 void ExecImpl::finish()
204 XBT_DEBUG("ExecImpl::finish() in state %s", get_state_str());
205 while (not simcalls_.empty()) {
206 actor::Simcall* simcall = simcalls_.front();
207 simcalls_.pop_front();
209 if (simcall->call_ == actor::Simcall::Type::NONE) // FIXME: maybe a better way to handle this case
210 continue; // if process handling comm is killed
212 handle_activity_waitany(simcall);
214 set_exception(simcall->issuer_);
216 simcall->issuer_->waiting_synchro_ = nullptr;
217 /* Fail the process if the host is down */
218 if (simcall->issuer_->get_host()->is_on())
219 simcall->issuer_->simcall_answer();
221 simcall->issuer_->set_wannadie();
225 void ExecImpl::reset()
228 bytes_amounts_.clear();
229 flops_amounts_.clear();
230 set_start_time(-1.0);
233 ActivityImpl* ExecImpl::migrate(s4u::Host* to)
235 if (not MC_is_active() && not MC_record_replay_is_active()) {
236 resource::Action* old_action = this->surf_action_;
237 resource::Action* new_action = to->get_cpu()->execution_start(old_action->get_cost(), old_action->get_user_bound());
238 new_action->set_remains(old_action->get_remains());
239 new_action->set_activity(this);
240 new_action->set_sharing_penalty(old_action->get_sharing_penalty());
241 new_action->set_user_bound(old_action->get_user_bound());
243 old_action->set_activity(nullptr);
244 old_action->cancel();
246 this->surf_action_ = new_action;
249 on_migration(*this, to);
256 xbt::signal<void(ExecImpl const&, s4u::Host*)> ExecImpl::on_migration;
258 } // namespace simgrid::kernel::activity