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/modelchecker.h>
7 #include <simgrid/s4u/Engine.hpp>
9 #include "src/kernel/activity/ActivityImpl.hpp"
10 #include "src/kernel/activity/CommImpl.hpp"
11 #include "src/kernel/activity/SynchroRaw.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"
17 #include <boost/range/algorithm.hpp>
18 #include <cmath> // isfinite()
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ker_activity, kernel, "Kernel activity-related synchronization");
26 ActivityImpl::~ActivityImpl()
29 XBT_DEBUG("Destroy activity %p", this);
32 void ActivityImpl::register_simcall(smx_simcall_t simcall)
34 simcalls_.push_back(simcall);
35 simcall->issuer_->waiting_synchro_ = this;
38 void ActivityImpl::unregister_simcall(smx_simcall_t simcall)
40 // Remove the first occurrence of simcall:
41 auto j = boost::range::find(simcalls_, simcall);
42 if (j != simcalls_.end())
46 void ActivityImpl::clean_action()
49 surf_action_->unref();
50 surf_action_ = nullptr;
54 double ActivityImpl::get_remaining() const
56 return surf_action_ ? surf_action_->get_remains() : 0;
59 const char* ActivityImpl::get_state_str() const
61 return to_c_str(state_);
64 bool ActivityImpl::test(actor::ActorImpl* issuer)
66 if (state_ != State::WAITING && state_ != State::RUNNING) {
68 issuer->exception_ = nullptr; // Do not propagate exception in that case
72 if (auto* observer = dynamic_cast<kernel::actor::ActivityTestSimcall*>(issuer->simcall_.observer_))
73 observer->set_result(false);
78 ssize_t ActivityImpl::test_any(actor::ActorImpl* issuer, const std::vector<ActivityImpl*>& activities)
80 auto* observer = dynamic_cast<kernel::actor::ActivityTestanySimcall*>(issuer->simcall_.observer_);
81 xbt_assert(observer != nullptr);
83 if (MC_is_active() || MC_record_replay_is_active()) {
84 int idx = observer->get_value();
85 xbt_assert(idx == -1 || activities[idx]->test(issuer));
89 for (std::size_t i = 0; i < activities.size(); ++i) {
90 if (activities[i]->test(issuer)) {
91 observer->set_result(i);
98 void ActivityImpl::wait_for(actor::ActorImpl* issuer, double timeout)
100 XBT_DEBUG("Wait for execution of synchro %p, state %s", this, get_state_str());
101 xbt_assert(std::isfinite(timeout), "timeout is not finite!");
103 /* Associate this simcall to the synchro */
104 register_simcall(&issuer->simcall_);
106 xbt_assert(not MC_is_active() && not MC_record_replay_is_active(), "MC is currently not supported here.");
108 /* If the synchro is already finished then perform the error handling */
109 if (state_ != State::WAITING && state_ != State::RUNNING) {
112 /* we need a sleep action (even when the timeout is infinite) to be notified of host failures */
113 /* Comms handle that a bit differently of the other activities */
114 auto* comm = dynamic_cast<CommImpl*>(this);
115 if (comm != nullptr) {
116 resource::Action* sleep = issuer->get_host()->get_cpu()->sleep(timeout);
117 sleep->set_activity(comm);
119 if (issuer == comm->src_actor_)
120 comm->src_timeout_ = sleep;
122 comm->dst_timeout_ = sleep;
124 RawImplPtr synchro(new RawImpl([this, issuer]() {
125 this->unregister_simcall(&issuer->simcall_);
126 issuer->waiting_synchro_ = nullptr;
127 issuer->exception_ = nullptr;
128 auto* observer = dynamic_cast<kernel::actor::ActivityWaitSimcall*>(issuer->simcall_.observer_);
129 xbt_assert(observer != nullptr);
130 observer->set_result(true);
132 synchro->set_host(issuer->get_host()).set_timeout(timeout).start();
133 synchro->register_simcall(&issuer->simcall_);
138 void ActivityImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<ActivityImpl*>& activities, double timeout)
140 XBT_DEBUG("Wait for execution of any synchro");
141 if (MC_is_active() || MC_record_replay_is_active()) {
142 auto* observer = dynamic_cast<kernel::actor::ActivityWaitanySimcall*>(issuer->simcall_.observer_);
143 xbt_assert(observer != nullptr);
144 xbt_assert(timeout <= 0.0, "Timeout not implemented for waitany in the model-checker");
145 int idx = observer->get_value();
146 auto* act = activities[idx];
147 act->simcalls_.push_back(&issuer->simcall_);
148 observer->set_result(idx);
149 act->set_state(State::DONE);
155 issuer->simcall_.timeout_cb_ = nullptr;
157 issuer->simcall_.timeout_cb_ = timer::Timer::set(s4u::Engine::get_clock() + timeout, [issuer, &activities]() {
158 issuer->simcall_.timeout_cb_ = nullptr;
159 for (auto* act : activities)
160 act->unregister_simcall(&issuer->simcall_);
161 // default result (-1) is set in actor::ActivityWaitanySimcall
162 issuer->simcall_answer();
166 for (auto* act : activities) {
167 /* associate this simcall to the the synchro */
168 act->simcalls_.push_back(&issuer->simcall_);
169 /* see if the synchro is already finished */
170 if (act->get_state() != State::WAITING && act->get_state() != State::RUNNING) {
175 XBT_DEBUG("Exit from ActivityImlp::wait_any_for");
178 void ActivityImpl::suspend()
180 if (surf_action_ == nullptr)
182 XBT_VERB("This activity is suspended (remain: %f)", surf_action_->get_remains());
183 surf_action_->suspend();
187 void ActivityImpl::resume()
189 if (surf_action_ == nullptr)
191 XBT_VERB("This activity is resumed (remain: %f)", surf_action_->get_remains());
192 surf_action_->resume();
196 void ActivityImpl::cancel()
198 XBT_VERB("Activity %p is canceled", this);
199 if (surf_action_ != nullptr)
200 surf_action_->cancel();
201 state_ = State::CANCELED;
204 void ActivityImpl::handle_activity_waitany(smx_simcall_t simcall)
206 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
207 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
209 if (auto* observer = dynamic_cast<actor::ActivityWaitanySimcall*>(simcall->observer_)) {
210 if (simcall->timeout_cb_) {
211 simcall->timeout_cb_->remove();
212 simcall->timeout_cb_ = nullptr;
215 auto activities = observer->get_activities();
216 for (auto* act : activities)
217 act->unregister_simcall(simcall);
219 if (not MC_is_active() && not MC_record_replay_is_active()) {
220 auto element = std::find(activities.begin(), activities.end(), this);
221 int rank = element != activities.end() ? static_cast<int>(std::distance(activities.begin(), element)) : -1;
222 auto* observer = dynamic_cast<kernel::actor::ActivityWaitanySimcall*>(simcall->observer_);
223 observer->set_result(rank);
228 // boost::intrusive_ptr<Activity> support:
229 void intrusive_ptr_add_ref(ActivityImpl* activity)
231 activity->refcount_.fetch_add(1, std::memory_order_relaxed);
234 void intrusive_ptr_release(ActivityImpl* activity)
236 if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
237 std::atomic_thread_fence(std::memory_order_acquire);
241 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_resumed;
242 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_suspended;
245 } // namespace simgrid::kernel::activity::