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 // Associate this simcall to the synchro
67 auto* observer = dynamic_cast<kernel::actor::ActivityTestSimcall*>(issuer->simcall_.observer_);
69 register_simcall(&issuer->simcall_);
71 if (state_ != State::WAITING && state_ != State::RUNNING) {
73 issuer->exception_ = nullptr; // Do not propagate exception in that case
78 observer->set_result(false);
79 issuer->waiting_synchro_ = nullptr;
80 unregister_simcall(&issuer->simcall_);
81 issuer->simcall_answer();
86 ssize_t ActivityImpl::test_any(actor::ActorImpl* issuer, const std::vector<ActivityImpl*>& activities)
88 if (MC_is_active() || MC_record_replay_is_active()) {
89 int idx = issuer->simcall_.mc_value_;
90 xbt_assert(idx == -1 || activities[idx]->test(issuer));
94 for (std::size_t i = 0; i < activities.size(); ++i) {
95 if (activities[i]->test(issuer)) {
96 auto* observer = dynamic_cast<kernel::actor::ActivityTestanySimcall*>(issuer->simcall_.observer_);
97 xbt_assert(observer != nullptr);
98 observer->set_result(i);
99 issuer->simcall_answer();
103 issuer->simcall_answer();
107 void ActivityImpl::wait_for(actor::ActorImpl* issuer, double timeout)
109 XBT_DEBUG("Wait for execution of synchro %p, state %s", this, get_state_str());
110 xbt_assert(std::isfinite(timeout), "timeout is not finite!");
112 /* Associate this simcall to the synchro */
113 register_simcall(&issuer->simcall_);
115 xbt_assert(not MC_is_active() && not MC_record_replay_is_active(), "MC is currently not supported here.");
117 /* If the synchro is already finished then perform the error handling */
118 if (state_ != State::WAITING && state_ != State::RUNNING) {
121 auto* comm = dynamic_cast<CommImpl*>(this);
122 if (comm != nullptr) {
123 resource::Action* sleep = issuer->get_host()->get_cpu()->sleep(timeout);
124 sleep->set_activity(comm);
126 if (issuer == comm->src_actor_)
127 comm->src_timeout_ = sleep;
129 comm->dst_timeout_ = sleep;
131 /* we need a sleep action (even when the timeout is infinite) to be notified of host failures */
132 RawImplPtr synchro(new RawImpl([this, issuer]() {
133 this->unregister_simcall(&issuer->simcall_);
134 issuer->waiting_synchro_ = nullptr;
135 issuer->exception_ = nullptr;
136 auto* observer = dynamic_cast<kernel::actor::ActivityWaitSimcall*>(issuer->simcall_.observer_);
137 xbt_assert(observer != nullptr);
138 observer->set_result(true);
140 synchro->set_host(issuer->get_host()).set_timeout(timeout).start();
141 synchro->register_simcall(&issuer->simcall_);
145 void ActivityImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<ActivityImpl*>& activities, double timeout)
147 XBT_DEBUG("Wait for execution of any synchro");
149 issuer->simcall_.timeout_cb_ = nullptr;
151 issuer->simcall_.timeout_cb_ = timer::Timer::set(s4u::Engine::get_clock() + timeout, [issuer, &activities]() {
152 issuer->simcall_.timeout_cb_ = nullptr;
153 for (auto* act : activities)
154 act->unregister_simcall(&issuer->simcall_);
155 // default result (-1) is set in actor::ActivityWaitanySimcall
156 issuer->simcall_answer();
160 for (auto* act : activities) {
161 /* associate this simcall to the the synchro */
162 act->simcalls_.push_back(&issuer->simcall_);
163 /* see if the synchro is already finished */
164 if (act->get_state() != State::WAITING && act->get_state() != State::RUNNING) {
169 XBT_DEBUG("Exit from ActivityImlp::wait_any_for");
172 void ActivityImpl::suspend()
174 if (surf_action_ == nullptr)
176 XBT_VERB("This activity is suspended (remain: %f)", surf_action_->get_remains());
177 surf_action_->suspend();
181 void ActivityImpl::resume()
183 if (surf_action_ == nullptr)
185 XBT_VERB("This activity is resumed (remain: %f)", surf_action_->get_remains());
186 surf_action_->resume();
190 void ActivityImpl::cancel()
192 XBT_VERB("Activity %p is canceled", this);
193 if (surf_action_ != nullptr)
194 surf_action_->cancel();
195 state_ = State::CANCELED;
198 void ActivityImpl::handle_activity_waitany(smx_simcall_t simcall)
200 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
201 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
203 if (auto* observer = dynamic_cast<actor::ActivityWaitanySimcall*>(simcall->observer_)) {
204 if (simcall->timeout_cb_) {
205 simcall->timeout_cb_->remove();
206 simcall->timeout_cb_ = nullptr;
209 auto activities = observer->get_activities();
210 for (auto* act : activities)
211 act->unregister_simcall(simcall);
213 if (not MC_is_active() && not MC_record_replay_is_active()) {
214 auto element = std::find(activities.begin(), activities.end(), this);
215 int rank = element != activities.end() ? static_cast<int>(std::distance(activities.begin(), element)) : -1;
216 auto* observer = dynamic_cast<kernel::actor::ActivityWaitanySimcall*>(simcall->observer_);
217 observer->set_result(rank);
222 // boost::intrusive_ptr<Activity> support:
223 void intrusive_ptr_add_ref(ActivityImpl* activity)
225 activity->refcount_.fetch_add(1, std::memory_order_relaxed);
228 void intrusive_ptr_release(ActivityImpl* activity)
230 if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
231 std::atomic_thread_fence(std::memory_order_acquire);
235 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_resumed;
236 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_suspended;
239 } // namespace simgrid::kernel::activity::