1 /* Copyright (c) 2008-2022. 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 "src/kernel/activity/MailboxImpl.hpp"
7 #include "src/mc/Session.hpp"
8 #include "src/mc/explo/SafetyChecker.hpp"
9 #include "src/mc/mc_config.hpp"
10 #include "src/mc/mc_exit.hpp"
11 #include "src/mc/mc_forward.hpp"
12 #include "src/mc/mc_private.hpp"
13 #include "src/mc/transition/TransitionAny.hpp"
14 #include "src/mc/transition/TransitionComm.hpp"
18 using api = simgrid::mc::Api;
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_comm_determinism, mc, "Logging specific to MC communication determinism detection");
25 enum class CallType { NONE, SEND, RECV, WAIT, WAITANY };
26 enum class CommPatternDifference { NONE, TYPE, MBOX, TAG, SRC_PROC, DST_PROC, DATA_SIZE };
27 enum class PatternCommunicationType {
33 class PatternCommunication {
36 uintptr_t comm_addr = 0;
37 PatternCommunicationType type = PatternCommunicationType::send;
38 unsigned long src_proc = 0;
39 unsigned long dst_proc = 0;
45 PatternCommunication dup() const
47 simgrid::mc::PatternCommunication res;
49 res.comm_addr = this->comm_addr;
50 res.type = this->type;
51 res.src_proc = this->src_proc;
52 res.dst_proc = this->dst_proc;
53 res.mbox = this->mbox;
55 res.index = this->index;
60 struct PatternCommunicationList {
61 unsigned int index_comm = 0;
62 std::vector<std::unique_ptr<simgrid::mc::PatternCommunication>> list;
65 /********** Checker extension **********/
67 struct CommDetExtension {
68 static simgrid::xbt::Extension<simgrid::mc::Exploration, CommDetExtension> EXTENSION_ID;
70 std::vector<simgrid::mc::PatternCommunicationList> initial_communications_pattern;
71 std::vector<std::vector<simgrid::mc::PatternCommunication*>> incomplete_communications_pattern;
73 bool initial_communications_pattern_done = false;
74 bool recv_deterministic = true;
75 bool send_deterministic = true;
76 std::string send_diff;
77 std::string recv_diff;
79 void exploration_start()
81 const unsigned long maxpid = api::get().get_maxpid();
83 initial_communications_pattern.resize(maxpid);
84 incomplete_communications_pattern.resize(maxpid);
86 void restore_communications_pattern(const simgrid::mc::State* state);
87 void enforce_deterministic_pattern(aid_t process, const PatternCommunication* comm);
88 void get_comm_pattern(const Transition* transition);
89 void complete_comm_pattern(const CommWaitTransition* transition);
90 void handle_comm_pattern(const Transition* transition);
92 simgrid::xbt::Extension<simgrid::mc::Exploration, CommDetExtension> CommDetExtension::EXTENSION_ID;
93 /********** State Extension ***********/
96 CommDetExtension* checker_;
99 std::vector<std::vector<simgrid::mc::PatternCommunication>> incomplete_comm_pattern_;
100 std::vector<unsigned> communication_indices_;
102 static simgrid::xbt::Extension<simgrid::mc::State, StateCommDet> EXTENSION_ID;
103 explicit StateCommDet(CommDetExtension* checker) : checker_(checker)
105 const unsigned long maxpid = api::get().get_maxpid();
106 for (unsigned long i = 0; i < maxpid; i++) {
107 std::vector<simgrid::mc::PatternCommunication> res;
108 for (auto const& comm : checker_->incomplete_communications_pattern[i])
109 res.push_back(comm->dup());
110 incomplete_comm_pattern_.push_back(std::move(res));
113 for (auto const& list_process_comm : checker_->initial_communications_pattern)
114 this->communication_indices_.push_back(list_process_comm.index_comm);
117 simgrid::xbt::Extension<simgrid::mc::State, StateCommDet> StateCommDet::EXTENSION_ID;
119 static simgrid::mc::CommPatternDifference compare_comm_pattern(const simgrid::mc::PatternCommunication* comm1,
120 const simgrid::mc::PatternCommunication* comm2)
122 using simgrid::mc::CommPatternDifference;
123 if (comm1->type != comm2->type)
124 return CommPatternDifference::TYPE;
125 if (comm1->mbox != comm2->mbox)
126 return CommPatternDifference::MBOX;
127 if (comm1->src_proc != comm2->src_proc)
128 return CommPatternDifference::SRC_PROC;
129 if (comm1->dst_proc != comm2->dst_proc)
130 return CommPatternDifference::DST_PROC;
131 if (comm1->tag != comm2->tag)
132 return CommPatternDifference::TAG;
133 if (comm1->size != comm2->size)
134 return CommPatternDifference::DATA_SIZE;
135 return CommPatternDifference::NONE;
138 void CommDetExtension::restore_communications_pattern(const simgrid::mc::State* state)
140 for (size_t i = 0; i < initial_communications_pattern.size(); i++)
141 initial_communications_pattern[i].index_comm =
142 state->extension<simgrid::mc::StateCommDet>()->communication_indices_[i];
144 const unsigned long maxpid = api::get().get_maxpid();
145 for (unsigned long i = 0; i < maxpid; i++) {
146 incomplete_communications_pattern[i].clear();
147 for (simgrid::mc::PatternCommunication const& comm :
148 state->extension<simgrid::mc::StateCommDet>()->incomplete_comm_pattern_[i])
149 incomplete_communications_pattern[i].push_back(new simgrid::mc::PatternCommunication(comm.dup()));
153 static std::string print_determinism_result(simgrid::mc::CommPatternDifference diff, aid_t actor,
154 const simgrid::mc::PatternCommunication* comm, unsigned int cursor)
159 if (comm->type == simgrid::mc::PatternCommunicationType::send)
160 type = xbt::string_printf("The send communications pattern of the actor %ld is different!", actor - 1);
162 type = xbt::string_printf("The recv communications pattern of the actor %ld is different!", actor - 1);
164 using simgrid::mc::CommPatternDifference;
166 case CommPatternDifference::TYPE:
167 res = xbt::string_printf("%s Different type for communication #%u", type.c_str(), cursor);
169 case CommPatternDifference::MBOX:
170 res = xbt::string_printf("%s Different mailbox for communication #%u", type.c_str(), cursor);
172 case CommPatternDifference::TAG:
173 res = xbt::string_printf("%s Different tag for communication #%u", type.c_str(), cursor);
175 case CommPatternDifference::SRC_PROC:
176 res = xbt::string_printf("%s Different source for communication #%u", type.c_str(), cursor);
178 case CommPatternDifference::DST_PROC:
179 res = xbt::string_printf("%s Different destination for communication #%u", type.c_str(), cursor);
181 case CommPatternDifference::DATA_SIZE:
182 res = xbt::string_printf("%s Different data size for communication #%u", type.c_str(), cursor);
192 void CommDetExtension::enforce_deterministic_pattern(aid_t actor, const PatternCommunication* comm)
194 PatternCommunicationList& list = initial_communications_pattern[actor];
195 CommPatternDifference diff = compare_comm_pattern(list.list[list.index_comm].get(), comm);
197 if (diff != CommPatternDifference::NONE) {
198 if (comm->type == PatternCommunicationType::send) {
199 send_deterministic = false;
200 send_diff = print_determinism_result(diff, actor, comm, list.index_comm + 1);
202 recv_deterministic = false;
203 if (recv_diff.empty())
204 recv_diff = print_determinism_result(diff, actor, comm, list.index_comm + 1);
206 if (_sg_mc_send_determinism && not send_deterministic) {
207 XBT_INFO("*********************************************************");
208 XBT_INFO("***** Non-send-deterministic communications pattern *****");
209 XBT_INFO("*********************************************************");
210 XBT_INFO("%s", send_diff.c_str());
211 session_singleton->log_state();
212 api::get().mc_exit(SIMGRID_MC_EXIT_NON_DETERMINISM);
213 } else if (_sg_mc_comms_determinism && (not send_deterministic && not recv_deterministic)) {
214 XBT_INFO("****************************************************");
215 XBT_INFO("***** Non-deterministic communications pattern *****");
216 XBT_INFO("****************************************************");
217 if (not send_diff.empty())
218 XBT_INFO("%s", send_diff.c_str());
219 if (not recv_diff.empty())
220 XBT_INFO("%s", recv_diff.c_str());
221 session_singleton->log_state();
222 api::get().mc_exit(SIMGRID_MC_EXIT_NON_DETERMINISM);
227 /********** Non Static functions ***********/
229 void CommDetExtension::get_comm_pattern(const Transition* transition)
231 const mc::PatternCommunicationList& initial_pattern = initial_communications_pattern[transition->aid_];
232 const std::vector<PatternCommunication*>& incomplete_pattern = incomplete_communications_pattern[transition->aid_];
234 auto pattern = std::make_unique<PatternCommunication>();
235 pattern->index = initial_pattern.index_comm + incomplete_pattern.size();
237 if (transition->type_ == Transition::Type::COMM_SEND) {
238 auto* send = static_cast<const CommSendTransition*>(transition);
240 pattern->type = PatternCommunicationType::send;
241 pattern->comm_addr = send->get_comm();
242 pattern->tag = send->get_tag();
244 // FIXME: Detached sends should be enforced when the receive is waited
246 } else if (transition->type_ == Transition::Type::COMM_RECV) {
247 auto* recv = static_cast<const CommRecvTransition*>(transition);
249 pattern->type = PatternCommunicationType::receive;
250 pattern->comm_addr = recv->get_comm();
251 pattern->tag = recv->get_tag();
254 XBT_DEBUG("Insert incomplete comm pattern %p type:%d for process %ld (comm: %" PRIxPTR ")", pattern.get(),
255 (int)pattern->type, transition->aid_, pattern->comm_addr);
256 incomplete_communications_pattern[transition->aid_].push_back(pattern.release());
259 void CommDetExtension::complete_comm_pattern(const CommWaitTransition* transition)
261 /* Complete comm pattern */
262 std::vector<PatternCommunication*>& incomplete_pattern = incomplete_communications_pattern[transition->aid_];
263 uintptr_t comm_addr = transition->get_comm();
264 auto current_comm_pattern =
265 std::find_if(begin(incomplete_pattern), end(incomplete_pattern),
266 [&comm_addr](const PatternCommunication* comm) { return (comm->comm_addr == comm_addr); });
267 xbt_assert(current_comm_pattern != std::end(incomplete_pattern), "Corresponding communication not found!");
268 std::unique_ptr<PatternCommunication> comm_pattern(*current_comm_pattern);
270 comm_pattern->src_proc = transition->get_sender();
271 comm_pattern->dst_proc = transition->get_receiver();
272 comm_pattern->mbox = transition->get_mailbox();
274 XBT_DEBUG("Remove incomplete comm pattern for actor %ld at cursor %zd", transition->aid_,
275 std::distance(begin(incomplete_pattern), current_comm_pattern));
276 incomplete_pattern.erase(current_comm_pattern);
278 if (initial_communications_pattern_done) {
279 /* Evaluate comm determinism */
280 enforce_deterministic_pattern(transition->aid_, comm_pattern.get());
281 initial_communications_pattern[transition->aid_].index_comm++;
283 /* Store comm pattern */
284 initial_communications_pattern[transition->aid_].list.push_back(std::move(comm_pattern));
288 void CommDetExtension::handle_comm_pattern(const Transition* transition)
290 if (not _sg_mc_comms_determinism && not _sg_mc_send_determinism)
293 switch (transition->type_) {
294 case Transition::Type::COMM_SEND:
295 get_comm_pattern(transition);
297 case Transition::Type::COMM_RECV:
298 get_comm_pattern(transition);
300 case Transition::Type::COMM_WAIT:
301 complete_comm_pattern(static_cast<const CommWaitTransition*>(transition));
303 case Transition::Type::WAITANY:
304 // Ignore wait on non-comm
305 if (auto const* wait = dynamic_cast<const CommWaitTransition*>(
306 static_cast<const WaitAnyTransition*>(transition)->get_current_transition()))
307 complete_comm_pattern(wait);
309 default: /* Ignore unhandled transition types */
314 /* FIXME: CommDet probably don't play nicely with stateful exploration
316 bool all_communications_are_finished = true;
317 for (size_t current_actor = 1; all_communications_are_finished && current_actor < maxpid; current_actor++) {
318 if (not extension->incomplete_communications_pattern[current_actor].empty()) {
319 XBT_DEBUG("Some communications are not finished, cannot stop the exploration! State not visited.");
320 all_communications_are_finished = false;
325 Exploration* create_communication_determinism_checker(Session* session)
327 CommDetExtension::EXTENSION_ID = simgrid::mc::Exploration::extension_create<CommDetExtension>();
328 StateCommDet::EXTENSION_ID = simgrid::mc::State::extension_create<StateCommDet>();
330 XBT_DEBUG("********* Start communication determinism verification *********");
332 auto extension = new CommDetExtension();
334 SafetyChecker::on_exploration_start([extension]() {
335 XBT_INFO("Check communication determinism");
336 extension->exploration_start();
338 SafetyChecker::on_backtracking([extension]() { extension->initial_communications_pattern_done = true; });
339 SafetyChecker::on_state_creation([extension](State* state) { state->extension_set(new StateCommDet(extension)); });
341 SafetyChecker::on_restore_system_state(
342 [extension](State* state) { extension->restore_communications_pattern(state); });
344 SafetyChecker::on_restore_initial_state([extension]() {
345 const unsigned long maxpid = api::get().get_maxpid();
346 assert(maxpid == extension->incomplete_communications_pattern.size());
347 assert(maxpid == extension->initial_communications_pattern.size());
348 for (unsigned long j = 0; j < maxpid; j++) {
349 extension->incomplete_communications_pattern[j].clear();
350 extension->initial_communications_pattern[j].index_comm = 0;
354 SafetyChecker::on_transition_replay([extension](Transition* t) { extension->handle_comm_pattern(t); });
355 SafetyChecker::on_transition_execute([extension](Transition* t) { extension->handle_comm_pattern(t); });
357 SafetyChecker::on_log_state([extension]() {
358 if (_sg_mc_comms_determinism) {
359 if (extension->send_deterministic && not extension->recv_deterministic) {
360 XBT_INFO("*******************************************************");
361 XBT_INFO("**** Only-send-deterministic communication pattern ****");
362 XBT_INFO("*******************************************************");
363 XBT_INFO("%s", extension->recv_diff.c_str());
365 if (not extension->send_deterministic && extension->recv_deterministic) {
366 XBT_INFO("*******************************************************");
367 XBT_INFO("**** Only-recv-deterministic communication pattern ****");
368 XBT_INFO("*******************************************************");
369 XBT_INFO("%s", extension->send_diff.c_str());
372 XBT_INFO("Send-deterministic : %s", extension->send_deterministic ? "Yes" : "No");
373 if (_sg_mc_comms_determinism)
374 XBT_INFO("Recv-deterministic : %s", extension->recv_deterministic ? "Yes" : "No");
378 return new SafetyChecker(session);
382 } // namespace simgrid