1 /* Copyright (c) 2015-2022. 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 "simgrid/sg_config.hpp"
7 #include "src/internal_config.h"
8 #include "src/mc/explo/Exploration.hpp"
9 #include "src/mc/mc_config.hpp"
10 #include "src/mc/mc_exit.hpp"
13 #include "smpi/smpi.h"
16 #include <boost/tokenizer.hpp>
21 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(mc);
23 static simgrid::config::Flag<std::string> _sg_mc_setenv{
24 "model-check/setenv", "Extra environment variables to pass to the child process (ex: 'AZE=aze;QWE=qwe').", "",
25 [](std::string_view value) {
26 xbt_assert(value.empty() || value.find('=', 0) != std::string_view::npos,
27 "The 'model-check/setenv' parameter must be like 'AZE=aze', but it does not contain an equal sign.");
30 static void mc_exec_user_code(std::vector<char*> const& argv)
33 while (argv[i] != nullptr && argv[i][0] == '-')
36 /* Setup the tokenizer that parses the cfg:model-check/setenv parameter */
37 using Tokenizer = boost::tokenizer<boost::char_separator<char>>;
38 boost::char_separator<char> semicol_sep(";");
39 boost::char_separator<char> equal_sep("=");
40 Tokenizer token_vars(_sg_mc_setenv.get(), semicol_sep); /* Iterate over all FOO=foo parts */
41 for (const auto& token : token_vars) {
42 std::vector<std::string> kv;
43 Tokenizer token_kv(token, equal_sep);
44 for (const auto& t : token_kv) /* Iterate over 'FOO' and then 'foo' in that 'FOO=foo' */
46 xbt_assert(kv.size() == 2, "Parse error on 'model-check/setenv' value %s. Does it contain an equal sign?",
48 XBT_INFO("setenv '%s'='%s'", kv[0].c_str(), kv[1].c_str());
49 setenv(kv[0].c_str(), kv[1].c_str(), 1);
51 xbt_assert(argv[i] != nullptr,
52 "Unable to find a binary to exec on the command line. Did you only pass config flags?");
54 execvp(argv[i], argv.data() + i);
55 xbt_die("The model-checked process failed to exec(%s): %s", argv[i], strerror(errno));
58 int main(int argc, char** argv)
60 xbt_assert(argc >= 2, "Missing arguments");
62 // Currently, we need this before sg_config_init:
63 _sg_do_model_check = 1;
65 // The initialization function can touch argv.
66 // We make a copy of argv before modifying it in order to pass the original value to the model-checked application:
67 std::vector<char*> argv_copy{argv, argv + argc + 1};
69 xbt_log_init(&argc, argv);
71 smpi_init_options(); // that's OK to call it twice, and we need it ASAP
73 sg_config_init(&argc, argv);
75 auto remote_app = std::make_unique<simgrid::mc::RemoteApp>([argv_copy] { mc_exec_user_code(argv_copy); });
77 simgrid::mc::Exploration* explo;
78 if (_sg_mc_comms_determinism || _sg_mc_send_determinism)
79 explo = simgrid::mc::create_communication_determinism_checker(*remote_app.get());
80 else if (_sg_mc_unfolding_checker)
81 explo = simgrid::mc::create_udpor_checker(*remote_app.get());
82 else if (_sg_mc_property_file.get().empty())
83 explo = simgrid::mc::create_dfs_exploration(*remote_app.get());
85 explo = simgrid::mc::create_liveness_checker(*remote_app.get());
87 mc_model_checker->set_exploration(explo);
88 std::unique_ptr<simgrid::mc::Exploration> checker{explo};
92 } catch (const simgrid::mc::DeadlockError&) {
93 return SIMGRID_MC_EXIT_DEADLOCK;
94 } catch (const simgrid::mc::TerminationError&) {
95 return SIMGRID_MC_EXIT_NON_TERMINATION;
96 } catch (const simgrid::mc::LivenessError&) {
97 return SIMGRID_MC_EXIT_LIVENESS;
99 return SIMGRID_MC_EXIT_SUCCESS;