1 /* Copyright (c) 2016-2023. 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/mc/explo/Exploration.hpp"
7 #include "src/mc/mc_config.hpp"
8 #include "src/mc/mc_exit.hpp"
9 #include "src/mc/mc_private.hpp"
10 #include "src/mc/sosp/RemoteProcessMemory.hpp"
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_explo, mc, "Generic exploration algorithm of the model-checker");
16 namespace simgrid::mc {
18 static simgrid::config::Flag<std::string> cfg_dot_output_file{
19 "model-check/dot-output", "Name of dot output file corresponding to graph state", ""};
21 Exploration* Exploration::instance_ = nullptr; // singleton instance
23 Exploration::Exploration(const std::vector<char*>& args, bool need_memory_introspection)
24 : remote_app_(std::make_unique<RemoteApp>(args, need_memory_introspection))
26 xbt_assert(instance_ == nullptr, "Cannot have more than one exploration instance");
29 if (not cfg_dot_output_file.get().empty()) {
30 dot_output_ = fopen(cfg_dot_output_file.get().c_str(), "w");
31 xbt_assert(dot_output_ != nullptr, "Error open dot output file: %s", strerror(errno));
33 fprintf(dot_output_, "digraph graphname{\n fixedsize=true; rankdir=TB; ranksep=.25; edge [fontsize=12]; node "
34 "[fontsize=10, shape=circle,width=.5 ]; graph [resolution=20, fontsize=10];\n");
38 Exploration::~Exploration()
40 if (dot_output_ != nullptr)
45 void Exploration::dot_output(const char* fmt, ...)
47 if (dot_output_ != nullptr) {
50 vfprintf(dot_output_, fmt, ap);
56 void Exploration::log_state()
58 if (not cfg_dot_output_file.get().empty()) {
62 if (getenv("SIMGRID_MC_SYSTEM_STATISTICS")) {
63 int ret = system("free");
65 XBT_WARN("Call to system(free) did not return 0, but %d", ret);
69 XBT_ATTRIB_NORETURN void Exploration::report_crash(int status)
71 XBT_INFO("**************************");
72 XBT_INFO("** CRASH IN THE PROGRAM **");
73 XBT_INFO("**************************");
74 if (WIFSIGNALED(status))
75 XBT_INFO("From signal: %s", strsignal(WTERMSIG(status)));
76 else if (WIFEXITED(status))
77 XBT_INFO("From exit: %i", WEXITSTATUS(status));
78 if (not xbt_log_no_loc)
79 XBT_INFO("%s core dump was generated by the system.", WCOREDUMP(status) ? "A" : "No");
81 XBT_INFO("Counter-example execution trace:");
82 for (auto const& s : get_textual_trace())
83 XBT_INFO(" %s", s.c_str());
84 XBT_INFO("You can debug the problem (and see the whole details) by rerunning out of simgrid-mc with "
85 "--cfg=model-check/replay:'%s'",
86 get_record_trace().to_string().c_str());
89 XBT_INFO("Stack trace not displayed because you passed --log=no_loc");
91 const auto* memory = get_remote_app().get_remote_process_memory();
93 XBT_INFO("Stack trace:");
96 XBT_INFO("Stack trace not shown because there is no memory introspection.");
100 system_exit(SIMGRID_MC_EXIT_PROGRAM_CRASH);
102 XBT_ATTRIB_NORETURN void Exploration::report_assertion_failure()
104 XBT_INFO("**************************");
105 XBT_INFO("*** PROPERTY NOT VALID ***");
106 XBT_INFO("**************************");
107 XBT_INFO("Counter-example execution trace:");
108 for (auto const& s : get_textual_trace())
109 XBT_INFO(" %s", s.c_str());
110 XBT_INFO("You can debug the problem (and see the whole details) by rerunning out of simgrid-mc with "
111 "--cfg=model-check/replay:'%s'",
112 get_record_trace().to_string().c_str());
114 system_exit(SIMGRID_MC_EXIT_SAFETY);
117 void Exploration::system_exit(int status) const
122 }; // namespace simgrid::mc