X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/fd9d52c0c7a9c96221fff2013cdeef05b6e979e2..497aee08bf8b36b4981083b79d8473991db1ccde:/src/mc/ModelChecker.cpp diff --git a/src/mc/ModelChecker.cpp b/src/mc/ModelChecker.cpp index 61a946d6ff..17e2bce738 100644 --- a/src/mc/ModelChecker.cpp +++ b/src/mc/ModelChecker.cpp @@ -1,151 +1,121 @@ -/* Copyright (c) 2008-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2008-2022. 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. */ -#include - -#include -#include -#include -#include -#include -#include - -#include -#include - -#include -#include -#include -#include - -#include "simgrid/sg_config.h" - -#include "src/mc/ModelChecker.hpp" -#include "src/mc/PageStore.hpp" #include "src/mc/ModelChecker.hpp" -#include "src/mc/mc_protocol.h" -#include "src/mc/mc_private.h" -#include "src/mc/mc_ignore.h" -#include "src/mc/mc_exit.h" -#include "src/mc/mc_record.h" -#include "src/mc/Transition.hpp" -#include "src/mc/Checker.hpp" +#include "src/mc/explo/Exploration.hpp" +#include "src/mc/explo/LivenessChecker.hpp" +#include "src/mc/mc_config.hpp" +#include "src/mc/mc_exit.hpp" +#include "src/mc/mc_private.hpp" +#include "src/mc/remote/RemoteProcess.hpp" +#include "src/mc/transition/TransitionComm.hpp" +#include "xbt/automaton.hpp" +#include "xbt/system_error.hpp" + +#include +#include +#include +#include XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_ModelChecker, mc, "ModelChecker"); ::simgrid::mc::ModelChecker* mc_model_checker = nullptr; -using simgrid::mc::remote; - -// Hardcoded index for now: -#define SOCKET_FD_INDEX 0 -#define SIGNAL_FD_INDEX 1 +#ifdef __linux__ +# define WAITPID_CHECKED_FLAGS __WALL +#else +# define WAITPID_CHECKED_FLAGS 0 +#endif -namespace simgrid { -namespace mc { +namespace simgrid::mc { -ModelChecker::ModelChecker(std::unique_ptr process) : - hostnames_(xbt_dict_new()), - page_store_(500), - process_(std::move(process)), - parent_snapshot_(nullptr) +ModelChecker::ModelChecker(std::unique_ptr remote_simulation, int sockfd) + : checker_side_(sockfd), remote_process_(std::move(remote_simulation)) { - -} - -ModelChecker::~ModelChecker() -{ - xbt_dict_free(&this->hostnames_); -} - -const char* ModelChecker::get_host_name(const char* hostname) -{ - // Lookup the host name in the dictionary (or create it): - xbt_dictelm_t elt = xbt_dict_get_elm_or_null(this->hostnames_, hostname); - if (!elt) { - xbt_dict_set(this->hostnames_, hostname, nullptr, nullptr); - elt = xbt_dict_get_elm_or_null(this->hostnames_, hostname); - assert(elt); - } - return elt->key; } void ModelChecker::start() { - const pid_t pid = process_->pid(); - - // Block SIGCHLD (this will be handled with accept/signalfd): - sigset_t set; - sigemptyset(&set); - sigaddset(&set, SIGCHLD); - if (sigprocmask(SIG_BLOCK, &set, nullptr) == -1) - throw simgrid::xbt::errno_error(); - - sigset_t full_set; - sigfillset(&full_set); - - // Prepare data for poll: - - struct pollfd* socket_pollfd = &fds_[SOCKET_FD_INDEX]; - socket_pollfd->fd = process_->getChannel().getSocket(); - socket_pollfd->events = POLLIN; - socket_pollfd->revents = 0; - - int signal_fd = signalfd(-1, &set, 0); - if (signal_fd == -1) - throw simgrid::xbt::errno_error(); - - struct pollfd* signalfd_pollfd = &fds_[SIGNAL_FD_INDEX]; - signalfd_pollfd->fd = signal_fd; - signalfd_pollfd->events = POLLIN; - signalfd_pollfd->revents = 0; + checker_side_.start( + [](evutil_socket_t sig, short events, void* arg) { + auto mc = static_cast(arg); + if (events == EV_READ) { + std::array buffer; + ssize_t size = mc->checker_side_.get_channel().receive(buffer.data(), buffer.size(), false); + if (size == -1 && errno != EAGAIN) + throw simgrid::xbt::errno_error(); + + if (not mc->handle_message(buffer.data(), size)) + mc->checker_side_.break_loop(); + } else if (events == EV_SIGNAL) { + if (sig == SIGCHLD) + mc->handle_waitpid(); + } else { + xbt_die("Unexpected event"); + } + }, + this); XBT_DEBUG("Waiting for the model-checked process"); int status; // The model-checked process SIGSTOP itself to signal it's ready: - pid_t res = waitpid(pid, &status, __WALL); - if (res < 0 || !WIFSTOPPED(status) || WSTOPSIG(status) != SIGSTOP) - xbt_die("Could not wait model-checked process"); + const pid_t pid = remote_process_->pid(); - process_->init(); + xbt_assert(waitpid(pid, &status, WAITPID_CHECKED_FLAGS) == pid && WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP, + "Could not wait model-checked process"); - if ((_sg_mc_dot_output_file != nullptr) && (_sg_mc_dot_output_file[0] != '\0')) - MC_init_dot_output(); + if (not _sg_mc_dot_output_file.get().empty()) { + dot_output_ = fopen(_sg_mc_dot_output_file.get().c_str(), "w"); + xbt_assert(dot_output_ != nullptr, "Error open dot output file: %s", strerror(errno)); + + fprintf(dot_output_, "digraph graphname{\n fixedsize=true; rankdir=TB; ranksep=.25; edge [fontsize=12]; node " + "[fontsize=10, shape=circle,width=.5 ]; graph [resolution=20, fontsize=10];\n"); + } setup_ignore(); + errno = 0; +#ifdef __linux__ ptrace(PTRACE_SETOPTIONS, pid, nullptr, PTRACE_O_TRACEEXIT); ptrace(PTRACE_CONT, pid, 0, 0); +#elif defined BSD + ptrace(PT_CONTINUE, pid, (caddr_t)1, 0); +#else +# error "no ptrace equivalent coded for this platform" +#endif + xbt_assert(errno == 0, + "Ptrace does not seem to be usable in your setup (errno: %d). " + "If you run from within a docker, adding `--cap-add SYS_PTRACE` to the docker line may help. " + "If it does not help, please report this bug.", + errno); +} + +void ModelChecker::dot_output(const char* fmt, ...) +{ + if (dot_output_ != nullptr) { + va_list ap; + va_start(ap, fmt); + vfprintf(dot_output_, fmt, ap); + va_end(ap); + } } -static const std::pair ignored_local_variables[] = { - std::pair{ "e", "*" }, - std::pair{ "__ex_cleanup", "*" }, - std::pair{ "__ex_mctx_en", "*" }, - std::pair{ "__ex_mctx_me", "*" }, - std::pair{ "__xbt_ex_ctx_ptr", "*" }, - std::pair{ "_log_ev", "*" }, - std::pair{ "_throw_ctx", "*" }, - std::pair{ "ctx", "*" }, - - std::pair{ "self", "simcall_BODY_mc_snapshot" }, - std::pair{ "next_context", "smx_ctx_sysv_suspend_serial" }, - std::pair{ "i", "smx_ctx_sysv_suspend_serial" }, - - /* Ignore local variable about time used for tracing */ - std::pair{ "start_time", "*" }, +static constexpr auto ignored_local_variables = { + std::make_pair("e", "*"), + std::make_pair("_log_ev", "*"), + + /* Ignore local variable about time used for tracing */ + std::make_pair("start_time", "*"), }; void ModelChecker::setup_ignore() { - Process& process = this->process(); - for (std::pair const& var : - ignored_local_variables) - process.ignore_local_variable(var.first, var.second); + const RemoteProcess& process = this->get_remote_process(); + for (auto const& [var, frame] : ignored_local_variables) + process.ignore_local_variable(var, frame); /* Static variable used for tracing */ process.ignore_global_variable("counter"); @@ -153,35 +123,25 @@ void ModelChecker::setup_ignore() void ModelChecker::shutdown() { - XBT_DEBUG("Shuting down model-checker"); + XBT_DEBUG("Shutting down model-checker"); - simgrid::mc::Process* process = &this->process(); - if (process->running()) { + RemoteProcess& process = get_remote_process(); + if (process.running()) { XBT_DEBUG("Killing process"); - kill(process->pid(), SIGTERM); - process->terminate(); + finalize_app(true); + kill(process.pid(), SIGKILL); + process.terminate(); } } -void ModelChecker::resume(simgrid::mc::Process& process) -{ - int res = process.getChannel().send(MC_MESSAGE_CONTINUE); - if (res) - throw simgrid::xbt::errno_error(); - process.clear_cache(); -} - -static -void throw_socket_error(int fd) +void ModelChecker::resume() { - int error = 0; - socklen_t errlen = sizeof(error); - if (getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&error, &errlen) == -1) - error = errno; - throw simgrid::xbt::errno_error(); + if (checker_side_.get_channel().send(MessageType::CONTINUE) != 0) + throw xbt::errno_error(); + remote_process_->clear_cache(); } -static void MC_report_crash(int status) +static void MC_report_crash(Exploration* explorer, int status) { XBT_INFO("**************************"); XBT_INFO("** CRASH IN THE PROGRAM **"); @@ -190,203 +150,115 @@ static void MC_report_crash(int 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:"); - simgrid::mc::dumpRecordPath(); - for (auto& s : mc_model_checker->getChecker()->getTextualTrace()) - XBT_INFO("%s", s.c_str()); - simgrid::mc::session->logState(); - XBT_INFO("Stack trace:"); - mc_model_checker->process().dumpStack(); -} - -static void MC_report_assertion_error(void) -{ - XBT_INFO("**************************"); - XBT_INFO("*** PROPERTY NOT VALID ***"); - XBT_INFO("**************************"); - XBT_INFO("Counter-example execution trace:"); - simgrid::mc::dumpRecordPath(); - for (auto& s : mc_model_checker->getChecker()->getTextualTrace()) - XBT_INFO("%s", s.c_str()); - simgrid::mc::session->logState(); + if (not xbt_log_no_loc) + XBT_INFO("%s core dump was generated by the system.", WCOREDUMP(status) ? "A" : "No"); + if (explorer) { + XBT_INFO("Counter-example execution trace:"); + for (auto const& s : explorer->get_textual_trace()) + XBT_INFO(" %s", s.c_str()); + XBT_INFO("Path = %s", explorer->get_record_trace().to_string().c_str()); + explorer->log_state(); + if (xbt_log_no_loc) { + XBT_INFO("Stack trace not displayed because you passed --log=no_loc"); + } else { + XBT_INFO("Stack trace:"); + mc_model_checker->get_remote_process().dump_stack(); + } + } } -bool ModelChecker::handle_message(char* buffer, ssize_t size) +bool ModelChecker::handle_message(const char* buffer, ssize_t size) { s_mc_message_t base_message; - if (size < (ssize_t) sizeof(base_message)) - xbt_die("Broken message"); + xbt_assert(size >= (ssize_t)sizeof(base_message), "Broken message"); memcpy(&base_message, buffer, sizeof(base_message)); switch(base_message.type) { + case MessageType::INITIAL_ADDRESSES: { + s_mc_message_initial_addresses_t message; + xbt_assert(size == sizeof(message), "Broken message. Got %d bytes instead of %d.", (int)size, (int)sizeof(message)); + memcpy(&message, buffer, sizeof(message)); + + get_remote_process().init(message.mmalloc_default_mdp, message.maxpid); + break; + } - case MC_MESSAGE_IGNORE_HEAP: - { - s_mc_ignore_heap_message_t message; - if (size != sizeof(message)) - xbt_die("Broken messsage"); + case MessageType::IGNORE_HEAP: { + s_mc_message_ignore_heap_t message; + xbt_assert(size == sizeof(message), "Broken message"); memcpy(&message, buffer, sizeof(message)); IgnoredHeapRegion region; - region.block = message.block; + region.block = message.block; region.fragment = message.fragment; - region.address = message.address; - region.size = message.size; - process().ignore_heap(region); + region.address = message.address; + region.size = message.size; + get_remote_process().ignore_heap(region); break; } - case MC_MESSAGE_UNIGNORE_HEAP: - { - s_mc_ignore_memory_message_t message; - if (size != sizeof(message)) - xbt_die("Broken messsage"); + case MessageType::UNIGNORE_HEAP: { + s_mc_message_ignore_memory_t message; + xbt_assert(size == sizeof(message), "Broken message"); memcpy(&message, buffer, sizeof(message)); - process().unignore_heap( - (void *)(std::uintptr_t) message.addr, message.size); + get_remote_process().unignore_heap((void*)(std::uintptr_t)message.addr, message.size); break; } - case MC_MESSAGE_IGNORE_MEMORY: - { - s_mc_ignore_memory_message_t message; - if (size != sizeof(message)) - xbt_die("Broken messsage"); + case MessageType::IGNORE_MEMORY: { + s_mc_message_ignore_memory_t message; + xbt_assert(size == sizeof(message), "Broken message"); memcpy(&message, buffer, sizeof(message)); - this->process().ignore_region(message.addr, message.size); + this->get_remote_process().ignore_region(message.addr, message.size); break; } - case MC_MESSAGE_STACK_REGION: - { - s_mc_stack_region_message_t message; - if (size != sizeof(message)) - xbt_die("Broken messsage"); + case MessageType::STACK_REGION: { + s_mc_message_stack_region_t message; + xbt_assert(size == sizeof(message), "Broken message"); memcpy(&message, buffer, sizeof(message)); - this->process().stack_areas().push_back(message.stack_region); - } - break; + this->get_remote_process().stack_areas().push_back(message.stack_region); + } break; - case MC_MESSAGE_REGISTER_SYMBOL: - { - s_mc_register_symbol_message_t message; - if (size != sizeof(message)) - xbt_die("Broken message"); + case MessageType::REGISTER_SYMBOL: { + s_mc_message_register_symbol_t message; + xbt_assert(size == sizeof(message), "Broken message"); memcpy(&message, buffer, sizeof(message)); - if (message.callback) - xbt_die("Support for client-side function proposition is not implemented."); - XBT_DEBUG("Received symbol: %s", message.name); - - if (simgrid::mc::property_automaton == nullptr) - simgrid::mc::property_automaton = xbt_automaton_new(); - - simgrid::mc::Process* process = &this->process(); - simgrid::mc::RemotePtr address - = simgrid::mc::remote((int*) message.data); - simgrid::xbt::add_proposition(simgrid::mc::property_automaton, - message.name, - [process, address]() { return process->read(address); } - ); + xbt_assert(not message.callback, "Support for client-side function proposition is not implemented."); + XBT_DEBUG("Received symbol: %s", message.name.data()); + LivenessChecker::automaton_register_symbol(get_remote_process(), message.name.data(), remote((int*)message.data)); break; } - case MC_MESSAGE_WAITING: - return false; + case MessageType::WAITING: + return false; - case MC_MESSAGE_ASSERTION_FAILED: - MC_report_assertion_error(); - this->exit(SIMGRID_MC_EXIT_SAFETY); - break; + case MessageType::ASSERTION_FAILED: + XBT_INFO("**************************"); + XBT_INFO("*** PROPERTY NOT VALID ***"); + XBT_INFO("**************************"); + XBT_INFO("Counter-example execution trace:"); + for (auto const& s : get_exploration()->get_textual_trace()) + XBT_INFO(" %s", s.c_str()); + XBT_INFO("Path = %s", get_exploration()->get_record_trace().to_string().c_str()); + exploration_->log_state(); - default: - xbt_die("Unexpected message from model-checked application"); + this->exit(SIMGRID_MC_EXIT_SAFETY); + default: + xbt_die("Unexpected message from model-checked application"); } return true; } -/** Terminate the model-checker aplication */ +/** Terminate the model-checker application */ void ModelChecker::exit(int status) { - // TODO, terminate the model checker politely instead of exiting rudel - if (process().running()) - kill(process().pid(), SIGKILL); + shutdown(); ::exit(status); } -bool ModelChecker::handle_events() -{ - char buffer[MC_MESSAGE_LENGTH]; - struct pollfd* socket_pollfd = &fds_[SOCKET_FD_INDEX]; - struct pollfd* signalfd_pollfd = &fds_[SIGNAL_FD_INDEX]; - - while(poll(fds_, 2, -1) == -1) { - switch(errno) { - case EINTR: - continue; - default: - throw simgrid::xbt::errno_error(); - } - } - - if (socket_pollfd->revents) { - if (socket_pollfd->revents & POLLIN) { - ssize_t size = process_->getChannel().receive(buffer, sizeof(buffer), false); - if (size == -1 && errno != EAGAIN) - throw simgrid::xbt::errno_error(); - return handle_message(buffer, size); - } - if (socket_pollfd->revents & POLLERR) - throw_socket_error(socket_pollfd->fd); - if (socket_pollfd->revents & POLLHUP) - xbt_die("Socket hang up?"); - } - - if (signalfd_pollfd->revents) { - if (signalfd_pollfd->revents & POLLIN) { - this->handle_signals(); - return true; - } - if (signalfd_pollfd->revents & POLLERR) - throw_socket_error(signalfd_pollfd->fd); - if (signalfd_pollfd->revents & POLLHUP) - xbt_die("Signalfd hang up?"); - } - - return true; -} - -void ModelChecker::loop() -{ - while (this->process().running()) - this->handle_events(); -} - -void ModelChecker::handle_signals() -{ - struct signalfd_siginfo info; - struct pollfd* signalfd_pollfd = &fds_[SIGNAL_FD_INDEX]; - while (1) { - ssize_t size = read(signalfd_pollfd->fd, &info, sizeof(info)); - if (size == -1) { - if (errno == EINTR) - continue; - else - throw simgrid::xbt::errno_error(); - } else if (size != sizeof(info)) - return throw std::runtime_error( - "Bad communication with model-checked application"); - else - break; - } - this->on_signal(&info); -} - void ModelChecker::handle_waitpid() { XBT_DEBUG("Check for wait event"); @@ -396,93 +268,101 @@ void ModelChecker::handle_waitpid() if (pid == -1) { if (errno == ECHILD) { // No more children: - if (this->process().running()) - xbt_die("Inconsistent state"); - else - break; + xbt_assert(not this->get_remote_process().running(), "Inconsistent state"); + break; } else { XBT_ERROR("Could not wait for pid"); throw simgrid::xbt::errno_error(); } } - if (pid == this->process().pid()) { - + if (pid == this->get_remote_process().pid()) { // From PTRACE_O_TRACEEXIT: +#ifdef __linux__ if (status>>8 == (SIGTRAP | (PTRACE_EVENT_EXIT<<8))) { - if (ptrace(PTRACE_GETEVENTMSG, this->process().pid(), 0, &status) == -1) - xbt_die("Could not get exit status"); + xbt_assert(ptrace(PTRACE_GETEVENTMSG, remote_process_->pid(), 0, &status) != -1, "Could not get exit status"); if (WIFSIGNALED(status)) { - MC_report_crash(status); - mc_model_checker->exit(SIMGRID_MC_EXIT_PROGRAM_CRASH); + MC_report_crash(exploration_, status); + this->get_remote_process().terminate(); + this->exit(SIMGRID_MC_EXIT_PROGRAM_CRASH); } } +#endif // We don't care about signals, just reinject them: if (WIFSTOPPED(status)) { XBT_DEBUG("Stopped with signal %i", (int) WSTOPSIG(status)); - if (ptrace(PTRACE_CONT, this->process().pid(), 0, WSTOPSIG(status)) == -1) - xbt_die("Could not PTRACE_CONT"); + errno = 0; +#ifdef __linux__ + ptrace(PTRACE_CONT, remote_process_->pid(), 0, WSTOPSIG(status)); +#elif defined BSD + ptrace(PT_CONTINUE, remote_process_->pid(), (caddr_t)1, WSTOPSIG(status)); +#endif + xbt_assert(errno == 0, "Could not PTRACE_CONT"); } - else if (WIFEXITED(status) || WIFSIGNALED(status)) { + else if (WIFSIGNALED(status)) { + MC_report_crash(exploration_, status); + this->get_remote_process().terminate(); + this->exit(SIMGRID_MC_EXIT_PROGRAM_CRASH); + } else if (WIFEXITED(status)) { XBT_DEBUG("Child process is over"); - this->process().terminate(); + this->get_remote_process().terminate(); } } } } -void ModelChecker::on_signal(const struct signalfd_siginfo* info) -{ - switch(info->ssi_signo) { - case SIGCHLD: - this->handle_waitpid(); - break; - default: - break; - } -} - -void ModelChecker::wait_client(simgrid::mc::Process& process) +void ModelChecker::wait_for_requests() { - this->resume(process); - while (this->process().running()) - if (!this->handle_events()) - return; + this->resume(); + if (this->get_remote_process().running()) + checker_side_.dispatch(); } -void ModelChecker::handle_simcall(Transition const& transition) +Transition* ModelChecker::handle_simcall(aid_t aid, int times_considered, bool new_transition) { - s_mc_simcall_handle_message m; + s_mc_message_simcall_execute_t m; memset(&m, 0, sizeof(m)); - m.type = MC_MESSAGE_SIMCALL_HANDLE; - m.pid = transition.pid; - m.value = transition.argument; - this->process_->getChannel().send(m); - this->process_->clear_cache(); - while (this->process_->running()) - if (!this->handle_events()) - return; + m.type = MessageType::SIMCALL_EXECUTE; + m.aid_ = aid; + m.times_considered_ = times_considered; + checker_side_.get_channel().send(m); + + this->remote_process_->clear_cache(); + if (this->remote_process_->running()) + checker_side_.dispatch(); // The app may send messages while processing the transition + + s_mc_message_simcall_execute_answer_t answer; + ssize_t s = checker_side_.get_channel().receive(answer); + xbt_assert(s != -1, "Could not receive message"); + xbt_assert(s == sizeof(answer) && answer.type == MessageType::SIMCALL_EXECUTE_ANSWER, + "Received unexpected message %s (%i, size=%i) " + "expected MessageType::SIMCALL_EXECUTE_ANSWER (%i, size=%i)", + to_c_str(answer.type), (int)answer.type, (int)s, (int)MessageType::SIMCALL_EXECUTE_ANSWER, + (int)sizeof(answer)); + + if (new_transition) { + std::stringstream stream(answer.buffer.data()); + return deserialize_transition(aid, times_considered, stream); + } else + return nullptr; } -bool ModelChecker::checkDeadlock() +void ModelChecker::finalize_app(bool terminate_asap) { - int res; - if ((res = this->process().getChannel().send(MC_MESSAGE_DEADLOCK_CHECK))) - xbt_die("Could not check deadlock state"); - s_mc_int_message_t message; - ssize_t s = mc_model_checker->process().getChannel().receive(message); - if (s == -1) - xbt_die("Could not receive message"); - if (s != sizeof(message) || message.type != MC_MESSAGE_DEADLOCK_CHECK_REPLY) - xbt_die("Received unexpected message %s (%i, size=%i) " - "expected MC_MESSAGE_DEADLOCK_CHECK_REPLY (%i, size=%i)", - MC_message_type_name(message.type), (int) message.type, (int) s, - (int) MC_MESSAGE_DEADLOCK_CHECK_REPLY, (int) sizeof(message) - ); - return message.value != 0; + s_mc_message_int_t m; + memset(&m, 0, sizeof m); + m.type = MessageType::FINALIZE; + m.value = terminate_asap; + xbt_assert(checker_side_.get_channel().send(m) == 0, "Could not ask the app to finalize on need"); + + s_mc_message_t answer; + ssize_t s = checker_side_.get_channel().receive(answer); + xbt_assert(s != -1, "Could not receive answer to FINALIZE"); + xbt_assert(s == sizeof(answer) && answer.type == MessageType::FINALIZE_REPLY, + "Received unexpected message %s (%i, size=%i) expected MessageType::FINALIZE_REPLY (%i, size=%i)", + to_c_str(answer.type), (int)answer.type, (int)s, (int)MessageType::FINALIZE_REPLY, (int)sizeof(answer)); } -} -} +} // namespace simgrid::mc