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/explo/Exploration.hpp"
13 #include "src/mc/mc_base.hpp"
14 #include "src/mc/mc_exit.hpp"
15 #include "src/mc/mc_pattern.hpp"
16 #include "src/mc/mc_private.hpp"
17 #include "src/mc/remote/RemoteProcess.hpp"
18 #include "src/surf/HostImpl.hpp"
20 #include <xbt/asserts.h>
22 #include "simgrid/s4u/Host.hpp"
23 #include "xbt/string.hpp"
25 #include "src/smpi/include/smpi_request.hpp"
28 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(Api, mc, "Logging specific to MC Facade APIs ");
29 XBT_LOG_EXTERNAL_CATEGORY(mc_global);
31 using Simcall = simgrid::simix::Simcall;
36 /** Statically "upcast" a s_smx_actor_t into an ActorInformation
38 * This gets 'actorInfo' from '&actorInfo->copy'. It upcasts in the
39 * sense that we could achieve the same thing by having ActorInformation
40 * inherit from s_smx_actor_t but we don't really want to do that.
42 static simgrid::mc::ActorInformation* actor_info_cast(smx_actor_t actor)
44 simgrid::mc::ActorInformation temp;
45 std::size_t offset = (char*)temp.copy.get_buffer() - (char*)&temp;
47 auto* process_info = reinterpret_cast<simgrid::mc::ActorInformation*>((char*)actor - offset);
51 xbt::string const& Api::get_actor_host_name(smx_actor_t actor) const
53 if (mc_model_checker == nullptr)
54 return actor->get_host()->get_name();
56 const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
58 // Read the simgrid::xbt::string in the MCed process:
59 simgrid::mc::ActorInformation* info = actor_info_cast(actor);
61 if (not info->hostname) {
62 Remote<s4u::Host> temp_host = process->read(remote(actor->get_host()));
63 auto remote_string_address = remote(&xbt::string::to_string_data(temp_host.get_buffer()->get_impl()->get_name()));
64 simgrid::xbt::string_data remote_string = process->read(remote_string_address);
65 std::vector<char> hostname(remote_string.len + 1);
66 // no need to read the terminating null byte, and thus hostname[remote_string.len] is guaranteed to be '\0'
67 process->read_bytes(hostname.data(), remote_string.len, remote(remote_string.data));
68 info->hostname = &mc_model_checker->get_host_name(hostname.data());
70 return *info->hostname;
73 xbt::string const& Api::get_actor_name(smx_actor_t actor) const
75 if (mc_model_checker == nullptr)
76 return actor->get_name();
78 simgrid::mc::ActorInformation* info = actor_info_cast(actor);
79 if (info->name.empty()) {
80 const simgrid::mc::RemoteProcess* process = &mc_model_checker->get_remote_process();
82 simgrid::xbt::string_data string_data = simgrid::xbt::string::to_string_data(actor->name_);
83 info->name = process->read_string(remote(string_data.data), string_data.len);
88 simgrid::mc::Exploration* Api::initialize(char** argv, simgrid::mc::CheckerAlgorithm algo) const
90 simgrid::mc::session_singleton = std::make_unique<simgrid::mc::Session>([argv] {
92 while (argv[i] != nullptr && argv[i][0] == '-')
94 xbt_assert(argv[i] != nullptr,
95 "Unable to find a binary to exec on the command line. Did you only pass config flags?");
96 execvp(argv[i], argv + i);
97 xbt_die("The model-checked process failed to exec(%s): %s", argv[i], strerror(errno));
100 simgrid::mc::Exploration* explo;
102 case CheckerAlgorithm::CommDeterminism:
103 explo = simgrid::mc::create_communication_determinism_checker(session_singleton.get());
106 case CheckerAlgorithm::UDPOR:
107 explo = simgrid::mc::create_udpor_checker(session_singleton.get());
110 case CheckerAlgorithm::Safety:
111 explo = simgrid::mc::create_safety_checker(session_singleton.get());
114 case CheckerAlgorithm::Liveness:
115 explo = simgrid::mc::create_liveness_checker(session_singleton.get());
122 mc_model_checker->set_exploration(explo);
126 std::vector<simgrid::mc::ActorInformation>& Api::get_actors() const
128 return mc_model_checker->get_remote_process().actors();
131 unsigned long Api::get_maxpid() const
133 return mc_model_checker->get_remote_process().get_maxpid();
136 std::size_t Api::get_remote_heap_bytes() const
138 RemoteProcess& process = mc_model_checker->get_remote_process();
139 auto heap_bytes_used = mmalloc_get_bytes_used_remote(process.get_heap()->heaplimit, process.get_malloc_info());
140 return heap_bytes_used;
143 void Api::mc_inc_visited_states() const
145 mc_model_checker->visited_states++;
148 unsigned long Api::mc_get_visited_states() const
150 return mc_model_checker->visited_states;
153 void Api::mc_exit(int status) const
155 mc_model_checker->exit(status);
158 void Api::restore_state(std::shared_ptr<simgrid::mc::Snapshot> system_state) const
160 system_state->restore(&mc_model_checker->get_remote_process());
163 bool Api::snapshot_equal(const Snapshot* s1, const Snapshot* s2) const
165 return simgrid::mc::snapshot_equal(s1, s2);
168 simgrid::mc::Snapshot* Api::take_snapshot(long num_state) const
170 auto snapshot = new simgrid::mc::Snapshot(num_state);
174 void Api::s_close() const
176 session_singleton->close();
177 session_singleton.reset();
178 if (simgrid::mc::property_automaton != nullptr) {
179 xbt_automaton_free(simgrid::mc::property_automaton);
180 simgrid::mc::property_automaton = nullptr;
184 void Api::automaton_load(const char* file) const
186 if (simgrid::mc::property_automaton == nullptr)
187 simgrid::mc::property_automaton = xbt_automaton_new();
189 xbt_automaton_load(simgrid::mc::property_automaton, file);
192 std::vector<int> Api::automaton_propositional_symbol_evaluate() const
194 unsigned int cursor = 0;
195 std::vector<int> values;
196 xbt_automaton_propositional_symbol_t ps = nullptr;
197 xbt_dynar_foreach (mc::property_automaton->propositional_symbols, cursor, ps)
198 values.push_back(xbt_automaton_propositional_symbol_evaluate(ps));
202 std::vector<xbt_automaton_state_t> Api::get_automaton_state() const
204 std::vector<xbt_automaton_state_t> automaton_stack;
205 unsigned int cursor = 0;
206 xbt_automaton_state_t automaton_state;
207 xbt_dynar_foreach (mc::property_automaton->states, cursor, automaton_state)
208 if (automaton_state->type == -1)
209 automaton_stack.push_back(automaton_state);
210 return automaton_stack;
213 int Api::compare_automaton_exp_label(const xbt_automaton_exp_label* l) const
215 unsigned int cursor = 0;
216 xbt_automaton_propositional_symbol_t p = nullptr;
217 xbt_dynar_foreach (simgrid::mc::property_automaton->propositional_symbols, cursor, p) {
218 if (std::strcmp(xbt_automaton_propositional_symbol_get_name(p), l->u.predicat) == 0)
224 void Api::set_property_automaton(xbt_automaton_state_t const& automaton_state) const
226 mc::property_automaton->current_state = automaton_state;
229 xbt_automaton_exp_label_t Api::get_automaton_transition_label(xbt_dynar_t const& dynar, int index) const
231 const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
232 return transition->label;
235 xbt_automaton_state_t Api::get_automaton_transition_dst(xbt_dynar_t const& dynar, int index) const
237 const xbt_automaton_transition* transition = xbt_dynar_get_as(dynar, index, xbt_automaton_transition_t);
238 return transition->dst;
242 } // namespace simgrid