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 static inline const char* get_color(int id)
39 static constexpr std::array<const char*, 13> colors{{"blue", "red", "green3", "goldenrod", "brown", "purple",
40 "magenta", "turquoise4", "gray25", "forestgreen", "hotpink",
42 return colors[id % colors.size()];
45 static std::string pointer_to_string(void* pointer)
47 return XBT_LOG_ISENABLED(Api, xbt_log_priority_verbose) ? xbt::string_printf("%p", pointer) : "(verbose only)";
50 static std::string buff_size_to_string(size_t buff_size)
52 return XBT_LOG_ISENABLED(Api, xbt_log_priority_verbose) ? std::to_string(buff_size) : "(verbose only)";
55 /** Statically "upcast" a s_smx_actor_t into an ActorInformation
57 * This gets 'actorInfo' from '&actorInfo->copy'. It upcasts in the
58 * sense that we could achieve the same thing by having ActorInformation
59 * inherit from s_smx_actor_t but we don't really want to do that.
61 simgrid::mc::ActorInformation* Api::actor_info_cast(smx_actor_t actor) const
63 simgrid::mc::ActorInformation temp;
64 std::size_t offset = (char*)temp.copy.get_buffer() - (char*)&temp;
66 auto* process_info = reinterpret_cast<simgrid::mc::ActorInformation*>((char*)actor - offset);
70 xbt::string const& Api::get_actor_host_name(smx_actor_t actor) const
72 if (mc_model_checker == nullptr)
73 return actor->get_host()->get_name();
75 const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
77 // Read the simgrid::xbt::string in the MCed process:
78 simgrid::mc::ActorInformation* info = actor_info_cast(actor);
80 if (not info->hostname) {
81 Remote<s4u::Host> temp_host = process->read(remote(actor->get_host()));
82 auto remote_string_address = remote(&xbt::string::to_string_data(temp_host.get_buffer()->get_impl()->get_name()));
83 simgrid::xbt::string_data remote_string = process->read(remote_string_address);
84 std::vector<char> hostname(remote_string.len + 1);
85 // no need to read the terminating null byte, and thus hostname[remote_string.len] is guaranteed to be '\0'
86 process->read_bytes(hostname.data(), remote_string.len, remote(remote_string.data));
87 info->hostname = &mc_model_checker->get_host_name(hostname.data());
89 return *info->hostname;
92 xbt::string const& Api::get_actor_name(smx_actor_t actor) const
94 if (mc_model_checker == nullptr)
95 return actor->get_name();
97 simgrid::mc::ActorInformation* info = actor_info_cast(actor);
98 if (info->name.empty()) {
99 const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
101 simgrid::xbt::string_data string_data = simgrid::xbt::string::to_string_data(actor->name_);
102 info->name = process->read_string(remote(string_data.data), string_data.len);
107 std::string Api::get_actor_string(smx_actor_t actor) const
111 res = "(" + std::to_string(actor->get_pid()) + ")";
112 if (actor->get_host())
113 res += std::string(get_actor_host_name(actor)) + " (" + std::string(get_actor_name(actor)) + ")";
115 res += get_actor_name(actor);
121 std::string Api::get_actor_dot_label(smx_actor_t actor) const
123 std::string res = "(" + std::to_string(actor->get_pid()) + ")";
124 if (actor->get_host())
125 res += get_actor_host_name(actor);
129 simgrid::mc::Checker* Api::initialize(char** argv, simgrid::mc::CheckerAlgorithm algo) const
131 auto session = new simgrid::mc::Session([argv] {
133 while (argv[i] != nullptr && argv[i][0] == '-')
135 xbt_assert(argv[i] != nullptr,
136 "Unable to find a binary to exec on the command line. Did you only pass config flags?");
137 execvp(argv[i], argv + i);
138 xbt_die("The model-checked process failed to exec(%s): %s", argv[i], strerror(errno));
141 simgrid::mc::Checker* checker;
143 case CheckerAlgorithm::CommDeterminism:
144 checker = simgrid::mc::create_communication_determinism_checker(session);
147 case CheckerAlgorithm::UDPOR:
148 checker = simgrid::mc::create_udpor_checker(session);
151 case CheckerAlgorithm::Safety:
152 checker = simgrid::mc::create_safety_checker(session);
155 case CheckerAlgorithm::Liveness:
156 checker = simgrid::mc::create_liveness_checker(session);
163 // FIXME: session and checker are never deleted
164 simgrid::mc::session_singleton = session;
165 mc_model_checker->setChecker(checker);
169 std::vector<simgrid::mc::ActorInformation>& Api::get_actors() const
171 return mc_model_checker->get_remote_process().actors();
174 unsigned long Api::get_maxpid() const
176 return mc_model_checker->get_remote_process().get_maxpid();
179 int Api::get_actors_size() const
181 return mc_model_checker->get_remote_process().actors().size();
184 RemotePtr<kernel::activity::CommImpl> Api::get_comm_isend_raw_addr(smx_simcall_t request) const
186 return remote(static_cast<kernel::activity::CommImpl*>(simcall_comm_isend__getraw__result(request)));
189 RemotePtr<kernel::activity::CommImpl> Api::get_comm_waitany_raw_addr(smx_simcall_t request, int value) const
191 auto addr = simcall_comm_waitany__getraw__comms(request) + value;
192 auto comm_addr = mc_model_checker->get_remote_process().read(remote(addr));
193 return RemotePtr<kernel::activity::CommImpl>(static_cast<kernel::activity::CommImpl*>(comm_addr));
196 std::string Api::get_pattern_comm_rdv(RemotePtr<kernel::activity::CommImpl> const& addr) const
198 Remote<kernel::activity::CommImpl> temp_activity;
199 mc_model_checker->get_remote_process().read(temp_activity, addr);
200 const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
202 char* remote_name = mc_model_checker->get_remote_process().read<char*>(RemotePtr<char*>(
203 (uint64_t)(activity->get_mailbox() ? &activity->get_mailbox()->get_name() : &activity->mbox_cpy->get_name())));
204 auto rdv = mc_model_checker->get_remote_process().read_string(RemotePtr<char>(remote_name));
208 unsigned long Api::get_pattern_comm_src_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
210 Remote<kernel::activity::CommImpl> temp_activity;
211 mc_model_checker->get_remote_process().read(temp_activity, addr);
212 const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
214 mc_model_checker->get_remote_process().resolve_actor(mc::remote(activity->src_actor_.get()))->get_pid();
218 unsigned long Api::get_pattern_comm_dst_proc(RemotePtr<kernel::activity::CommImpl> const& addr) const
220 Remote<kernel::activity::CommImpl> temp_activity;
221 mc_model_checker->get_remote_process().read(temp_activity, addr);
222 const kernel::activity::CommImpl* activity = temp_activity.get_buffer();
224 mc_model_checker->get_remote_process().resolve_actor(mc::remote(activity->dst_actor_.get()))->get_pid();
228 std::vector<char> Api::get_pattern_comm_data(RemotePtr<kernel::activity::CommImpl> const& addr) const
230 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
231 mc_model_checker->get_remote_process().read(temp_comm, addr);
232 const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
234 std::vector<char> buffer{};
235 if (comm->src_buff_ != nullptr) {
236 buffer.resize(comm->src_buff_size_);
237 mc_model_checker->get_remote_process().read_bytes(buffer.data(), buffer.size(), remote(comm->src_buff_));
243 bool Api::check_send_request_detached(smx_simcall_t const& simcall) const
245 Remote<simgrid::smpi::Request> mpi_request;
246 mc_model_checker->get_remote_process().read(
247 mpi_request, remote(static_cast<smpi::Request*>(simcall_comm_isend__get__data(simcall))));
248 return mpi_request.get_buffer()->detached();
252 smx_actor_t Api::get_src_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
254 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
255 mc_model_checker->get_remote_process().read(temp_comm, comm_addr);
256 const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
258 auto src_proc = mc_model_checker->get_remote_process().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
262 smx_actor_t Api::get_dst_actor(RemotePtr<kernel::activity::CommImpl> const& comm_addr) const
264 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
265 mc_model_checker->get_remote_process().read(temp_comm, comm_addr);
266 const simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
268 auto dst_proc = mc_model_checker->get_remote_process().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
272 std::size_t Api::get_remote_heap_bytes() const
274 RemoteProcess& process = mc_model_checker->get_remote_process();
275 auto heap_bytes_used = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
276 return heap_bytes_used;
279 void Api::mc_inc_visited_states() const
281 mc_model_checker->visited_states++;
284 unsigned long Api::mc_get_visited_states() const
286 return mc_model_checker->visited_states;
289 void Api::mc_check_deadlock() const
291 if (mc_model_checker->checkDeadlock()) {
292 XBT_CINFO(mc_global, "**************************");
293 XBT_CINFO(mc_global, "*** DEADLOCK DETECTED ***");
294 XBT_CINFO(mc_global, "**************************");
295 XBT_CINFO(mc_global, "Counter-example execution trace:");
296 for (auto const& s : mc_model_checker->getChecker()->get_textual_trace())
297 XBT_CINFO(mc_global, " %s", s.c_str());
298 simgrid::mc::dumpRecordPath();
299 simgrid::mc::session_singleton->log_state();
300 throw DeadlockError();
304 /** Get the issuer of a simcall (`req->issuer`)
306 * In split-process mode, it does the black magic necessary to get an address
307 * of a (shallow) copy of the data structure the issuer SIMIX actor in the local
310 * @param process the MCed process
311 * @param req the simcall (copied in the local process)
313 smx_actor_t Api::simcall_get_issuer(s_smx_simcall const* req) const
315 xbt_assert(mc_model_checker != nullptr);
317 // This is the address of the smx_actor in the MCed process:
318 auto address = simgrid::mc::remote(req->issuer_);
320 // Lookup by address:
321 for (auto& actor : mc_model_checker->get_remote_process().actors())
322 if (actor.address == address)
323 return actor.copy.get_buffer();
324 for (auto& actor : mc_model_checker->get_remote_process().dead_actors())
325 if (actor.address == address)
326 return actor.copy.get_buffer();
328 xbt_die("Issuer not found");
331 RemotePtr<kernel::activity::MailboxImpl> Api::get_mbox_remote_addr(smx_simcall_t const req) const
333 if (req->call_ == Simcall::COMM_ISEND)
334 return remote(simcall_comm_isend__get__mbox(req));
335 if (req->call_ == Simcall::COMM_IRECV)
336 return remote(simcall_comm_irecv__get__mbox(req));
340 RemotePtr<kernel::activity::ActivityImpl> Api::get_comm_remote_addr(smx_simcall_t const req) const
342 if (req->call_ == Simcall::COMM_ISEND)
343 return remote(simcall_comm_isend__getraw__result(req));
344 if (req->call_ == Simcall::COMM_IRECV)
345 return remote(simcall_comm_irecv__getraw__result(req));
349 void Api::mc_exit(int status) const
351 mc_model_checker->exit(status);
354 std::string Api::request_get_dot_output(aid_t aid, int value) const
356 const char* color = get_color(aid - 1);
357 return "label = \"" + mc_model_checker->simcall_dot_label(aid, value) + "\", color = " + color +
358 ", fontcolor = " + color;
362 int Api::get_smpi_request_tag(smx_simcall_t const& simcall, simgrid::simix::Simcall type) const
364 void* simcall_data = nullptr;
365 if (type == Simcall::COMM_ISEND)
366 simcall_data = simcall_comm_isend__get__data(simcall);
367 else if (type == Simcall::COMM_IRECV)
368 simcall_data = simcall_comm_irecv__get__data(simcall);
369 Remote<simgrid::smpi::Request> mpi_request;
370 mc_model_checker->get_remote_process().read(mpi_request, remote(static_cast<smpi::Request*>(simcall_data)));
371 return mpi_request.get_buffer()->tag();
375 void Api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
377 system_state->restore(&mc_model_checker->get_remote_process());
380 void Api::log_state() const
382 session_singleton->log_state();
385 bool Api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
387 return simgrid::mc::snapshot_equal(s1, s2);
390 simgrid::mc::Snapshot* Api::take_snapshot(int num_state) const
392 auto snapshot = new simgrid::mc::Snapshot(num_state);
396 void Api::s_close() const
398 session_singleton->close();
401 void Api::automaton_load(const char* file) const
403 if (simgrid::mc::property_automaton == nullptr)
404 simgrid::mc::property_automaton = xbt_automaton_new();
406 xbt_automaton_load(simgrid::mc::property_automaton, file);
409 std::vector<int> Api::automaton_propositional_symbol_evaluate() const
411 unsigned int cursor = 0;
412 std::vector<int> values;
413 xbt_automaton_propositional_symbol_t ps = nullptr;
414 xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
415 values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
419 std::vector<xbt_automaton_state_t> Api::get_automaton_state() const
421 std::vector<xbt_automaton_state_t> automaton_stack;
422 unsigned int cursor = 0;
423 xbt_automaton_state_t automaton_state;
424 xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
425 if (automaton_state->type == -1)
426 automaton_stack.push_back(automaton_state);
427 return automaton_stack;
430 int Api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
432 unsigned int cursor = 0;
433 xbt_automaton_propositional_symbol_t p = nullptr;
434 xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
435 if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
441 void Api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
443 mc::property_automaton->current_state = automaton_state;
446 xbt_automaton_exp_label_t Api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
448 const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
449 return transition->label;
452 xbt_automaton_state_t Api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
454 const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
455 return transition->dst;
459 } // namespace simgrid