X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/ff971a5b9ba883f03673047d58fe1002e247727d..0e7d247670cc012d8e784d0c8bcbb70a1c0bb9c6:/src/mc/mc_global.cpp diff --git a/src/mc/mc_global.cpp b/src/mc/mc_global.cpp index 24d755c076..06f1981d42 100644 --- a/src/mc/mc_global.cpp +++ b/src/mc/mc_global.cpp @@ -1,5 +1,4 @@ -/* Copyright (c) 2008-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2008-2017. The SimGrid Team. All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ @@ -9,8 +8,15 @@ #include #include +#include + #include +#include "xbt/automaton.h" +#include "xbt/backtrace.hpp" +#include "xbt/dynar.h" +#include "xbt/swag.h" + #include "mc_base.h" #include "mc/mc.h" @@ -21,27 +27,28 @@ #include #endif -#include "src/simix/smx_process_private.h" - -#if HAVE_MC +#include "src/simix/ActorImpl.hpp" + +#if SIMGRID_HAVE_MC +#include "src/mc/checker/Checker.hpp" +#include "src/mc/mc_comm_pattern.hpp" +#include "src/mc/mc_private.hpp" +#include "src/mc/mc_request.hpp" +#include "src/mc/mc_safety.hpp" +#include "src/mc/mc_smx.hpp" +#include "src/mc/mc_snapshot.hpp" +#include "src/mc/mc_unw.hpp" #include -#include "src/mc/mc_comm_pattern.h" -#include "src/mc/mc_request.h" -#include "src/mc/mc_safety.h" -#include "src/mc/mc_snapshot.h" -#include "src/mc/mc_liveness.h" -#include "src/mc/mc_private.h" -#include "src/mc/mc_unw.h" -#include "src/mc/mc_smx.h" #endif -#include "src/mc/mc_record.h" -#include "src/mc/mc_protocol.h" -#include "src/mc/Client.hpp" +#include "src/mc/Transition.hpp" +#include "src/mc/mc_record.hpp" +#include "src/mc/remote/Client.hpp" +#include "src/mc/remote/mc_protocol.h" XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc, "Logging specific to MC (global)"); -e_mc_mode_t mc_mode; +extern std::string _sg_mc_dot_output_file; namespace simgrid { namespace mc { @@ -51,16 +58,7 @@ std::vector processes_time; } } -#if HAVE_MC -int user_max_depth_reached = 0; - -/* MC global data structures */ -mc_state_t mc_current_state = nullptr; -char mc_replay_mode = false; - -mc_stats_t mc_stats = nullptr; -mc_global_t initial_global_state = nullptr; -xbt_fifo_t mc_stack = nullptr; +#if SIMGRID_HAVE_MC /* Liveness */ @@ -76,12 +74,12 @@ xbt_automaton_t property_automaton = nullptr; FILE *dot_output = nullptr; -/******************************* Initialisation of MC *******************************/ +/******************************* Initialization of MC *******************************/ /*********************************************************************************/ void MC_init_dot_output() { - dot_output = fopen(_sg_mc_dot_output_file, "w"); + dot_output = fopen(_sg_mc_dot_output_file.c_str(), "w"); if (dot_output == nullptr) { perror("Error open dot output file"); @@ -98,242 +96,88 @@ void MC_init_dot_output() void MC_run() { - simgrid::mc::processes_time.resize(simix_process_maxpid); + simgrid::mc::processes_time.resize(SIMIX_process_get_maxpid()); MC_ignore_heap(simgrid::mc::processes_time.data(), simgrid::mc::processes_time.size() * sizeof(simgrid::mc::processes_time[0])); - smx_process_t process; - xbt_swag_foreach(process, simix_global->process_list) - MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup)); + for (auto const& kv : simix_global->process_list) { + smx_actor_t actor = kv.second; + MC_ignore_heap(&(actor->process_hookup), sizeof(actor->process_hookup)); + } simgrid::mc::Client::get()->mainLoop(); simgrid::mc::processes_time.clear(); } -/** - * \brief Re-executes from the state at position start all the transitions indicated by - * a given model-checker stack. - * \param stack The stack with the transitions to execute. - * \param start Start index to begin the re-execution. - */ -void MC_replay(xbt_fifo_t stack) +void MC_show_deadlock() { - int value, count = 1; - char *req_str; - smx_simcall_t req = nullptr, saved_req = NULL; - xbt_fifo_item_t item, start_item; - mc_state_t state; - - XBT_DEBUG("**** Begin Replay ****"); - - /* Intermediate backtracking */ - if(_sg_mc_checkpoint > 0 || _sg_mc_termination || _sg_mc_visited > 0) { - start_item = xbt_fifo_get_first_item(stack); - state = (mc_state_t)xbt_fifo_get_item_content(start_item); - if(state->system_state){ - simgrid::mc::restore_snapshot(state->system_state); - if(_sg_mc_comms_determinism || _sg_mc_send_determinism) - MC_restore_communications_pattern(state); - return; - } - } - - - /* Restore the initial state */ - simgrid::mc::restore_snapshot(initial_global_state->snapshot); - /* At the moment of taking the snapshot the raw heap was set, so restoring - * it will set it back again, we have to unset it to continue */ - - start_item = xbt_fifo_get_last_item(stack); - - if (_sg_mc_comms_determinism || _sg_mc_send_determinism) { - // int n = xbt_dynar_length(incomplete_communications_pattern); - unsigned n = MC_smx_get_maxpid(); - assert(n == xbt_dynar_length(incomplete_communications_pattern)); - assert(n == xbt_dynar_length(initial_communications_pattern)); - for (unsigned j=0; j < n ; j++) { - xbt_dynar_reset((xbt_dynar_t)xbt_dynar_get_as(incomplete_communications_pattern, j, xbt_dynar_t)); - xbt_dynar_get_as(initial_communications_pattern, j, mc_list_comm_pattern_t)->index_comm = 0; - } - } - - /* Traverse the stack from the state at position start and re-execute the transitions */ - for (item = start_item; - item != xbt_fifo_get_first_item(stack); - item = xbt_fifo_get_prev_item(item)) { - - state = (mc_state_t) xbt_fifo_get_item_content(item); - saved_req = MC_state_get_executed_request(state, &value); - - if (saved_req) { - /* because we got a copy of the executed request, we have to fetch the - real one, pointed by the request field of the issuer process */ - - const smx_process_t issuer = MC_smx_simcall_get_issuer(saved_req); - req = &issuer->simcall; - - /* Debug information */ - if (XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)) { - req_str = simgrid::mc::request_to_string(req, value, simgrid::mc::RequestType::simix); - XBT_DEBUG("Replay: %s (%p)", req_str, state); - xbt_free(req_str); - } - - /* TODO : handle test and testany simcalls */ - e_mc_call_type_t call = MC_CALL_TYPE_NONE; - if (_sg_mc_comms_determinism || _sg_mc_send_determinism) - call = MC_get_call_type(req); - - simgrid::mc::handle_simcall(req, value); - - if (_sg_mc_comms_determinism || _sg_mc_send_determinism) - MC_handle_comm_pattern(call, req, value, nullptr, 1); - - mc_model_checker->wait_for_requests(); - - count++; - } - - /* Update statistics */ - mc_stats->visited_states++; - mc_stats->executed_transitions++; - - } - - XBT_DEBUG("**** End Replay ****"); + XBT_INFO("**************************"); + XBT_INFO("*** DEAD-LOCK DETECTED ***"); + XBT_INFO("**************************"); + XBT_INFO("Counter-example execution trace:"); + for (auto const& s : mc_model_checker->getChecker()->getTextualTrace()) + XBT_INFO("%s", s.c_str()); + simgrid::mc::session->logState(); } -/** - * \brief Dumps the contents of a model-checker's stack and shows the actual - * execution trace - * \param stack The stack to dump - */ -void MC_dump_stack_safety(xbt_fifo_t stack) +void MC_automaton_load(const char *file) { - MC_show_stack_safety(stack); - - mc_state_t state; + if (simgrid::mc::property_automaton == nullptr) + simgrid::mc::property_automaton = xbt_automaton_new(); - while ((state = (mc_state_t) xbt_fifo_pop(stack)) != nullptr) - MC_state_delete(state, !state->in_visited_states ? 1 : 0); + xbt_automaton_load(simgrid::mc::property_automaton, file); } +namespace simgrid { +namespace mc { -void MC_show_stack_safety(xbt_fifo_t stack) +void dumpStack(FILE* file, unw_cursor_t cursor) { - int value; - mc_state_t state; - xbt_fifo_item_t item; - smx_simcall_t req; - char *req_str = nullptr; - - for (item = xbt_fifo_get_last_item(stack); - item; item = xbt_fifo_get_prev_item(item)) { - state = (mc_state_t)xbt_fifo_get_item_content(item); - req = MC_state_get_executed_request(state, &value); - if (req) { - req_str = simgrid::mc::request_to_string(req, value, simgrid::mc::RequestType::executed); - XBT_INFO("%s", req_str); - xbt_free(req_str); - } - } -} + int nframe = 0; + char buffer[100]; -void MC_show_deadlock(void) -{ - XBT_INFO("**************************"); - XBT_INFO("*** DEAD-LOCK DETECTED ***"); - XBT_INFO("**************************"); - XBT_INFO("Counter-example execution trace:"); - MC_dump_stack_safety(mc_stack); - MC_print_statistics(mc_stats); -} + unw_word_t off; + do { + const char* name = not unw_get_proc_name(&cursor, buffer, 100, &off) ? buffer : "?"; + // Unmangle C++ names: + auto realname = simgrid::xbt::demangle(name); -void MC_print_statistics(mc_stats_t stats) -{ - if(_sg_mc_comms_determinism) { - if (!initial_global_state->recv_deterministic && initial_global_state->send_deterministic){ - XBT_INFO("******************************************************"); - XBT_INFO("**** Only-send-deterministic communication pattern ****"); - XBT_INFO("******************************************************"); - XBT_INFO("%s", initial_global_state->recv_diff); - }else if(!initial_global_state->send_deterministic && initial_global_state->recv_deterministic) { - XBT_INFO("******************************************************"); - XBT_INFO("**** Only-recv-deterministic communication pattern ****"); - XBT_INFO("******************************************************"); - XBT_INFO("%s", initial_global_state->send_diff); - } - } +#if defined(__x86_64__) + unw_word_t rip = 0; + unw_word_t rsp = 0; + unw_get_reg(&cursor, UNW_X86_64_RIP, &rip); + unw_get_reg(&cursor, UNW_X86_64_RSP, &rsp); + fprintf(file, " %i: %s (RIP=0x%" PRIx64 " RSP=0x%" PRIx64 ")\n", nframe, realname.get(), (std::uint64_t)rip, + (std::uint64_t)rsp); +#else + fprintf(file, " %i: %s\n", nframe, realname ? realname : name); +#endif - if (stats->expanded_pairs == 0) { - XBT_INFO("Expanded states = %lu", stats->expanded_states); - XBT_INFO("Visited states = %lu", stats->visited_states); - } else { - XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs); - XBT_INFO("Visited pairs = %lu", stats->visited_pairs); - } - XBT_INFO("Executed transitions = %lu", stats->executed_transitions); - if ((_sg_mc_dot_output_file != nullptr) && (_sg_mc_dot_output_file[0] != '\0')) { - fprintf(dot_output, "}\n"); - fclose(dot_output); - } - if (initial_global_state != nullptr && (_sg_mc_comms_determinism || _sg_mc_send_determinism)) { - XBT_INFO("Send-deterministic : %s", !initial_global_state->send_deterministic ? "No" : "Yes"); - if (_sg_mc_comms_determinism) - XBT_INFO("Recv-deterministic : %s", !initial_global_state->recv_deterministic ? "No" : "Yes"); - } - if (getenv("SIMGRID_MC_SYSTEM_STATISTICS")){ - int ret=system("free"); - if(ret!=0)XBT_WARN("system call did not return 0, but %d",ret); - } + ++nframe; + } while(unw_step(&cursor)); } -void MC_automaton_load(const char *file) -{ - if (simgrid::mc::property_automaton == nullptr) - simgrid::mc::property_automaton = xbt_automaton_new(); - - xbt_automaton_load(simgrid::mc::property_automaton, file); +} } static void MC_dump_stacks(FILE* file) { int nstack = 0; for (auto const& stack : mc_model_checker->process().stack_areas()) { - fprintf(file, "Stack %i:\n", nstack); - - int nframe = 0; - char buffer[100]; + nstack++; simgrid::mc::UnwindContext context; unw_context_t raw_context = - mc_model_checker->process().read( + (unw_context_t) mc_model_checker->process().read( simgrid::mc::remote((unw_context_t *)stack.context)); context.initialize(&mc_model_checker->process(), &raw_context); unw_cursor_t cursor = context.cursor(); - - unw_word_t off; - do { - const char * name = !unw_get_proc_name(&cursor, buffer, 100, &off) ? buffer : "?"; -#if defined(__x86_64__) - unw_word_t rip = 0; - unw_word_t rsp = 0; - unw_get_reg(&cursor, UNW_X86_64_RIP, &rip); - unw_get_reg(&cursor, UNW_X86_64_RSP, &rsp); - fprintf(file, " %i: %s (RIP=0x%" PRIx64 " RSP=0x%" PRIx64 ")\n", - nframe, name, (std::uint64_t) rip, (std::uint64_t) rsp); -#else - fprintf(file, " %i: %s\n", nframe, name); -#endif - ++nframe; - } while(unw_step(&cursor)); - - ++nstack; + simgrid::mc::dumpStack(file, cursor); } } #endif -double MC_process_clock_get(smx_process_t process) +double MC_process_clock_get(smx_actor_t process) { if (simgrid::mc::processes_time.empty()) return 0; @@ -342,40 +186,7 @@ double MC_process_clock_get(smx_process_t process) return -1; } -void MC_process_clock_add(smx_process_t process, double amount) +void MC_process_clock_add(smx_actor_t process, double amount) { simgrid::mc::processes_time[process->pid] += amount; } - -#if HAVE_MC -void MC_report_assertion_error(void) -{ - XBT_INFO("**************************"); - XBT_INFO("*** PROPERTY NOT VALID ***"); - XBT_INFO("**************************"); - XBT_INFO("Counter-example execution trace:"); - MC_record_dump_path(mc_stack); - MC_dump_stack_safety(mc_stack); - MC_print_statistics(mc_stats); -} - -void MC_report_crash(int status) -{ - XBT_INFO("**************************"); - XBT_INFO("** CRASH IN THE PROGRAM **"); - XBT_INFO("**************************"); - if (WIFSIGNALED(status)) - XBT_INFO("From signal: %s", strsignal(WTERMSIG(status))); - else if (WIFEXITED(status)) - XBT_INFO("From exit: %i", WEXITSTATUS(status)); - if (WCOREDUMP(status)) - XBT_INFO("A core dump was generated by the system."); - else - XBT_INFO("No core dump was generated by the system."); - XBT_INFO("Counter-example execution trace:"); - MC_record_dump_path(mc_stack); - MC_dump_stack_safety(mc_stack); - MC_print_statistics(mc_stats); -} - -#endif