1 /* Copyright (c) 2020-2022. 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. */
8 #include "src/kernel/activity/MailboxImpl.hpp"
9 #include "src/kernel/activity/MutexImpl.hpp"
10 #include "src/kernel/actor/SimcallObserver.hpp"
11 #include "src/mc/Session.hpp"
12 #include "src/mc/checker/Checker.hpp"
13 #include "src/mc/mc_base.hpp"
14 #include "src/mc/mc_comm_pattern.hpp"
15 #include "src/mc/mc_exit.hpp"
16 #include "src/mc/mc_pattern.hpp"
17 #include "src/mc/mc_private.hpp"
18 #include "src/mc/remote/RemoteProcess.hpp"
19 #include "src/surf/HostImpl.hpp"
21 #include <xbt/asserts.h>
23 #include "simgrid/s4u/Host.hpp"
24 #include "xbt/string.hpp"
26 #include "src/smpi/include/smpi_request.hpp"
29 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(Api, mc, "Logging specific to MC Facade APIs ");
30 XBT_LOG_EXTERNAL_CATEGORY(mc_global);
32 using Simcall = simgrid::simix::Simcall;
37 /** Statically "upcast" a s_smx_actor_t into an ActorInformation
39 * This gets 'actorInfo' from '&actorInfo->copy'. It upcasts in the
40 * sense that we could achieve the same thing by having ActorInformation
41 * inherit from s_smx_actor_t but we don't really want to do that.
43 simgrid::mc::ActorInformation* Api::actor_info_cast(smx_actor_t actor) const
45 simgrid::mc::ActorInformation temp;
46 std::size_t offset = (char*)temp.copy.get_buffer() - (char*)&temp;
48 auto* process_info = reinterpret_cast<simgrid::mc::ActorInformation*>((char*)actor - offset);
52 xbt::string const& Api::get_actor_host_name(smx_actor_t actor) const
54 if (mc_model_checker == nullptr)
55 return actor->get_host()->get_name();
57 const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
59 // Read the simgrid::xbt::string in the MCed process:
60 simgrid::mc::ActorInformation* info = actor_info_cast(actor);
62 if (not info->hostname) {
63 Remote<s4u::Host> temp_host = process->read(remote(actor->get_host()));
64 auto remote_string_address = remote(&xbt::string::to_string_data(temp_host.get_buffer()->get_impl()->get_name()));
65 simgrid::xbt::string_data remote_string = process->read(remote_string_address);
66 std::vector<char> hostname(remote_string.len + 1);
67 // no need to read the terminating null byte, and thus hostname[remote_string.len] is guaranteed to be '\0'
68 process->read_bytes(hostname.data(), remote_string.len, remote(remote_string.data));
69 info->hostname = &mc_model_checker->get_host_name(hostname.data());
71 return *info->hostname;
74 xbt::string const& Api::get_actor_name(smx_actor_t actor) const
76 if (mc_model_checker == nullptr)
77 return actor->get_name();
79 simgrid::mc::ActorInformation* info = actor_info_cast(actor);
80 if (info->name.empty()) {
81 const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
83 simgrid::xbt::string_data string_data = simgrid::xbt::string::to_string_data(actor->name_);
84 info->name = process->read_string(remote(string_data.data), string_data.len);
89 std::string Api::get_actor_string(smx_actor_t actor) const
93 res = "(" + std::to_string(actor->get_pid()) + ")";
94 if (actor->get_host())
95 res += std::string(get_actor_host_name(actor)) + " (" + std::string(get_actor_name(actor)) + ")";
97 res += get_actor_name(actor);
103 std::string Api::get_actor_dot_label(smx_actor_t actor) const
105 std::string res = "(" + std::to_string(actor->get_pid()) + ")";
106 if (actor->get_host())
107 res += get_actor_host_name(actor);
111 simgrid::mc::Checker* Api::initialize(char** argv, simgrid::mc::CheckerAlgorithm algo) const
113 auto session = new simgrid::mc::Session([argv] {
115 while (argv[i] != nullptr && argv[i][0] == '-')
117 xbt_assert(argv[i] != nullptr,
118 "Unable to find a binary to exec on the command line. Did you only pass config flags?");
119 execvp(argv[i], argv + i);
120 xbt_die("The model-checked process failed to exec(%s): %s", argv[i], strerror(errno));
123 simgrid::mc::Checker* checker;
125 case CheckerAlgorithm::CommDeterminism:
126 checker = simgrid::mc::create_communication_determinism_checker(session);
129 case CheckerAlgorithm::UDPOR:
130 checker = simgrid::mc::create_udpor_checker(session);
133 case CheckerAlgorithm::Safety:
134 checker = simgrid::mc::create_safety_checker(session);
137 case CheckerAlgorithm::Liveness:
138 checker = simgrid::mc::create_liveness_checker(session);
145 // FIXME: session and checker are never deleted
146 simgrid::mc::session_singleton = session;
147 mc_model_checker->setChecker(checker);
151 std::vector<simgrid::mc::ActorInformation>& Api::get_actors() const
153 return mc_model_checker->get_remote_process().actors();
156 unsigned long Api::get_maxpid() const
158 return mc_model_checker->get_remote_process().get_maxpid();
161 int Api::get_actors_size() const
163 return mc_model_checker->get_remote_process().actors().size();
166 RemotePtr<kernel::activity::CommImpl> Api::get_comm_isend_raw_addr(smx_simcall_t request) const
168 return remote(static_cast<kernel::activity::CommImpl*>(simcall_comm_isend__getraw__result(request)));
171 RemotePtr<kernel::activity::CommImpl> Api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
173 auto addr = simcall_comm_waitany__getraw__comms(request) + value;
174 auto comm_addr = mc_model_checker->get_remote_process().read(remote(addr));
175 return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
178 std::string Api::get_pattern_comm_rdv(RemotePtr<kernel::activity::CommImpl> const& addr) const
180 Remote<kernel::activity::CommImpl> temp_activity;
181 mc_model_checker->get_remote_process().read(temp_activity, addr);
182 const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
184 char* remote_name = mc_model_checker->get_remote_process().read<char*>(RemotePtr<char*>(
185 (uint64_t)(activity->get_mailbox() ? &activity->get_mailbox()->get_name() : &activity->mbox_cpy->get_name())));
186 auto rdv = mc_model_checker->get_remote_process().read_string(RemotePtr<char>(remote_name));
190 unsigned long Api::get_pattern_comm_src_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
192 Remote<kernel::activity::CommImpl> temp_activity;
193 mc_model_checker->get_remote_process().read(temp_activity, addr);
194 const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
196 mc_model_checker->get_remote_process().resolve_actor(mc::remote(activity->src_actor_.get()))->get_pid();
200 unsigned long Api::get_pattern_comm_dst_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
202 Remote<kernel::activity::CommImpl> temp_activity;
203 mc_model_checker->get_remote_process().read(temp_activity, addr);
204 const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
206 mc_model_checker->get_remote_process().resolve_actor(mc::remote(activity->dst_actor_.get()))->get_pid();
210 std::vector<char> Api::get_pattern_comm_data(RemotePtr<kernel::activity::CommImpl> const& addr) const
212 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
213 mc_model_checker->get_remote_process().read(temp_comm, addr);
214 const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
216 std::vector<char> buffer{};
217 if (comm->src_buff_ != nullptr) {
218 buffer.resize(comm->src_buff_size_);
219 mc_model_checker->get_remote_process().read_bytes(buffer.data(), buffer.size(), remote(comm->src_buff_));
225 bool Api::check_send_request_detached(smx_simcall_t const& simcall) const
227 Remote<simgrid::smpi::Request> mpi_request;
228 mc_model_checker->get_remote_process().read(
229 mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
230 return mpi_request.get_buffer()->detached();
234 smx_actor_t Api::get_src_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
236 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
237 mc_model_checker->get_remote_process().read(temp_comm, comm_addr);
238 const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
240 auto src_proc = mc_model_checker->get_remote_process().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
244 smx_actor_t Api::get_dst_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
246 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
247 mc_model_checker->get_remote_process().read(temp_comm, comm_addr);
248 const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
250 auto dst_proc = mc_model_checker->get_remote_process().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
254 std::size_t Api::get_remote_heap_bytes() const
256 RemoteProcess& process = mc_model_checker->get_remote_process();
257 auto heap_bytes_used = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
258 return heap_bytes_used;
261 void Api::mc_inc_visited_states() const
263 mc_model_checker->visited_states++;
266 unsigned long Api::mc_get_visited_states() const
268 return mc_model_checker->visited_states;
271 void Api::mc_check_deadlock() const
273 if (mc_model_checker->checkDeadlock()) {
274 XBT_CINFO(mc_global, "**************************");
275 XBT_CINFO(mc_global, "*** DEADLOCK DETECTED ***");
276 XBT_CINFO(mc_global, "**************************");
277 XBT_CINFO(mc_global, "Counter-example execution trace:");
278 for (auto const& s : mc_model_checker->getChecker()->get_textual_trace())
279 XBT_CINFO(mc_global, " %s", s.c_str());
280 XBT_INFO("Path = %s", mc_model_checker->getChecker()->get_record_trace().to_string().c_str());
281 simgrid::mc::session_singleton->log_state();
282 throw DeadlockError();
286 /** Get the issuer of a simcall (`req->issuer`)
288 * In split-process mode, it does the black magic necessary to get an address
289 * of a (shallow) copy of the data structure the issuer SIMIX actor in the local
292 * @param process the MCed process
293 * @param req the simcall (copied in the local process)
295 smx_actor_t Api::simcall_get_issuer(s_smx_simcall const* req) const
297 xbt_assert(mc_model_checker != nullptr);
299 // This is the address of the smx_actor in the MCed process:
300 auto address = simgrid::mc::remote(req->issuer_);
302 // Lookup by address:
303 for (auto& actor : mc_model_checker->get_remote_process().actors())
304 if (actor.address == address)
305 return actor.copy.get_buffer();
306 for (auto& actor : mc_model_checker->get_remote_process().dead_actors())
307 if (actor.address == address)
308 return actor.copy.get_buffer();
310 xbt_die("Issuer not found");
313 RemotePtr<kernel::activity::MailboxImpl> Api::get_mbox_remote_addr(smx_simcall_t const req) const
315 if (req->call_ == Simcall::COMM_ISEND)
316 return remote(simcall_comm_isend__get__mbox(req));
317 if (req->call_ == Simcall::COMM_IRECV)
318 return remote(simcall_comm_irecv__get__mbox(req));
322 RemotePtr<kernel::activity::ActivityImpl> Api::get_comm_remote_addr(smx_simcall_t const req) const
324 if (req->call_ == Simcall::COMM_ISEND)
325 return remote(simcall_comm_isend__getraw__result(req));
326 if (req->call_ == Simcall::COMM_IRECV)
327 return remote(simcall_comm_irecv__getraw__result(req));
331 void Api::mc_exit(int status) const
333 mc_model_checker->exit(status);
336 std::string Api::request_get_dot_output(const Transition* t) const
338 static constexpr std::array<const char*, 13> colors{{"blue", "red", "green3", "goldenrod", "brown", "purple",
339 "magenta", "turquoise4", "gray25", "forestgreen", "hotpink",
340 "lightblue", "tan"}};
341 const char* color = colors[(t->aid_ - 1) % colors.size()];
343 return "label = \"" + t->dot_label() + "\", color = " + color + ", fontcolor = " + color;
347 int Api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
349 void* simcall_data = nullptr;
350 if (type == Simcall::COMM_ISEND)
351 simcall_data = simcall_comm_isend__get__data(simcall);
352 else if (type == Simcall::COMM_IRECV)
353 simcall_data = simcall_comm_irecv__get__data(simcall);
354 Remote<simgrid::smpi::Request> mpi_request;
355 mc_model_checker->get_remote_process().read(mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
356 return mpi_request.get_buffer()->tag();
360 void Api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
362 system_state->restore(&mc_model_checker->get_remote_process());
365 void Api::log_state() const
367 session_singleton->log_state();
370 bool Api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
372 return simgrid::mc::snapshot_equal(s1, s2);
375 simgrid::mc::Snapshot* Api::take_snapshot(long num_state) const
377 auto snapshot = new simgrid::mc::Snapshot(num_state);
381 void Api::s_close() const
383 session_singleton->close();
386 void Api::automaton_load(const char* file) const
388 if (simgrid::mc::property_automaton == nullptr)
389 simgrid::mc::property_automaton = xbt_automaton_new();
391 xbt_automaton_load(simgrid::mc::property_automaton, file);
394 std::vector<int> Api::automaton_propositional_symbol_evaluate() const
396 unsigned int cursor = 0;
397 std::vector<int> values;
398 xbt_automaton_propositional_symbol_t ps = nullptr;
399 xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
400 values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
404 std::vector<xbt_automaton_state_t> Api::get_automaton_state() const
406 std::vector<xbt_automaton_state_t> automaton_stack;
407 unsigned int cursor = 0;
408 xbt_automaton_state_t automaton_state;
409 xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
410 if (automaton_state->type == -1)
411 automaton_stack.push_back(automaton_state);
412 return automaton_stack;
415 int Api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
417 unsigned int cursor = 0;
418 xbt_automaton_propositional_symbol_t p = nullptr;
419 xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
420 if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
426 void Api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
428 mc::property_automaton->current_state = automaton_state;
431 xbt_automaton_exp_label_t Api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
433 const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
434 return transition->label;
437 xbt_automaton_state_t Api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
439 const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
440 return transition->dst;
444 } // namespace simgrid