X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0facf52013684615c801816de974754778c9474a..3203afd846219ef8b41cadda945ea0a98103c46f:/src/mc/remote/AppSide.cpp diff --git a/src/mc/remote/AppSide.cpp b/src/mc/remote/AppSide.cpp index 376e8b64a7..a32ece169d 100644 --- a/src/mc/remote/AppSide.cpp +++ b/src/mc/remote/AppSide.cpp @@ -1,29 +1,39 @@ -/* Copyright (c) 2015-2021. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2015-2023. 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 "src/mc/remote/AppSide.hpp" +#include "simgrid/s4u/Host.hpp" #include "src/internal_config.h" +#include "src/kernel/EngineImpl.hpp" #include "src/kernel/actor/ActorImpl.hpp" #include "src/kernel/actor/SimcallObserver.hpp" +#include "src/mc/mc_base.hpp" +#include "src/mc/mc_config.hpp" #include "src/mc/remote/RemoteProcess.hpp" -#include "xbt/coverage.h" -#include "xbt/xbt_modinter.h" /* mmalloc_preinit to get the default mmalloc arena address */ +#if HAVE_SMPI +#include "src/smpi/include/private.hpp" +#endif +#include "src/sthread/sthread.h" +#include "src/xbt/coverage.h" +#include "xbt/str.h" #include #include +#include // setvbuf #include #include #include +#include #include #include #include XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_client, mc, "MC client logic"); +XBT_LOG_EXTERNAL_CATEGORY(mc_global); -namespace simgrid { -namespace mc { +namespace simgrid::mc { std::unique_ptr AppSide::instance_; @@ -36,11 +46,13 @@ AppSide* AppSide::initialize() if (instance_) return instance_.get(); - _sg_do_model_check = 1; + simgrid::mc::cfg_do_model_check = true; + + setvbuf(stdout, nullptr, _IOLBF, 0); // Fetch socket from MC_ENV_SOCKET_FD: const char* fd_env = std::getenv(MC_ENV_SOCKET_FD); - int fd = xbt_str_parse_int(fd_env, "Variable '" MC_ENV_SOCKET_FD "' should contain a number but contains '%s'"); + int fd = xbt_str_parse_int(fd_env, "Not a number in variable '" MC_ENV_SOCKET_FD "'"); XBT_DEBUG("Model-checked application found socket FD %i", fd); // Check the socket type/validity: @@ -64,9 +76,8 @@ AppSide* AppSide::initialize() xbt_assert(errno == 0 && raise(SIGSTOP) == 0, "Could not wait for the model-checker (errno = %d: %s)", errno, strerror(errno)); - s_mc_message_initial_addresses_t message{ - MessageType::INITIAL_ADDRESSES, mmalloc_preinit(), simgrid::kernel::actor::get_maxpid_addr(), - simgrid::simix::simix_global_get_actors_addr(), simgrid::simix::simix_global_get_dead_actors_addr()}; + s_mc_message_initial_addresses_t message{MessageType::INITIAL_ADDRESSES, mmalloc_get_current_heap(), + kernel::actor::ActorImpl::get_maxpid_addr()}; xbt_assert(instance_->channel_.send(message) == 0, "Could not send the initial message with addresses."); instance_->handle_messages(); @@ -75,33 +86,140 @@ AppSide* AppSide::initialize() void AppSide::handle_deadlock_check(const s_mc_message_t*) const { - bool deadlock = false; - if (not simix_global->process_list.empty()) { - deadlock = true; - for (auto const& kv : simix_global->process_list) - if (simgrid::mc::actor_is_enabled(kv.second)) { - deadlock = false; - break; - } + const auto* engine = kernel::EngineImpl::get_instance(); + const auto& actor_list = engine->get_actor_list(); + bool deadlock = not actor_list.empty() && std::none_of(begin(actor_list), end(actor_list), [](const auto& kv) { + return mc::actor_is_enabled(kv.second); + }); + + if (deadlock) { + XBT_CINFO(mc_global, "**************************"); + XBT_CINFO(mc_global, "*** DEADLOCK DETECTED ***"); + XBT_CINFO(mc_global, "**************************"); + engine->display_all_actor_status(); } - // Send result: s_mc_message_int_t answer{MessageType::DEADLOCK_CHECK_REPLY, deadlock}; xbt_assert(channel_.send(answer) == 0, "Could not send response"); } -void AppSide::handle_simcall_execute(const s_mc_message_simcall_handle_t* message) const +void AppSide::handle_simcall_execute(const s_mc_message_simcall_execute_t* message) const { - kernel::actor::ActorImpl* process = kernel::actor::ActorImpl::by_pid(message->aid_); - xbt_assert(process != nullptr, "Invalid pid %lu", message->aid_); - process->simcall_handle(message->times_considered_); + kernel::actor::ActorImpl* actor = kernel::EngineImpl::get_instance()->get_actor_by_pid(message->aid_); + xbt_assert(actor != nullptr, "Invalid pid %ld", message->aid_); + + // The client may send some messages to the server while processing the transition + actor->simcall_handle(message->times_considered_); + // Say the server that the transition is over and that it should proceed xbt_assert(channel_.send(MessageType::WAITING) == 0, "Could not send MESSAGE_WAITING to model-checker"); + + // Finish the RPC from the server: return a serialized observer, to build a Transition on Checker side + s_mc_message_simcall_execute_answer_t answer; + memset(&answer, 0, sizeof(answer)); + answer.type = MessageType::SIMCALL_EXECUTE_ANSWER; + std::stringstream stream; + if (actor->simcall_.observer_ != nullptr) { + actor->simcall_.observer_->serialize(stream); + } else { + stream << (short)mc::Transition::Type::UNKNOWN; + } + std::string str = stream.str(); + xbt_assert(str.size() + 1 <= answer.buffer.size(), + "The serialized simcall is too large for the buffer. Please fix the code."); + strncpy(answer.buffer.data(), str.c_str(), answer.buffer.size() - 1); + answer.buffer.back() = '\0'; + + XBT_DEBUG("send SIMCALL_EXECUTE_ANSWER(%s) ~> '%s'", actor->get_cname(), str.c_str()); + xbt_assert(channel_.send(answer) == 0, "Could not send response"); } -void AppSide::handle_actor_enabled(const s_mc_message_actor_enabled_t* msg) const +void AppSide::handle_finalize(const s_mc_message_int_t* msg) const { - bool res = simgrid::mc::actor_is_enabled(kernel::actor::ActorImpl::by_pid(msg->aid)); - s_mc_message_int_t answer{MessageType::ACTOR_ENABLED_REPLY, res}; - channel_.send(answer); + bool terminate_asap = msg->value; + XBT_DEBUG("Finalize (terminate = %d)", (int)terminate_asap); + if (not terminate_asap) { + if (XBT_LOG_ISENABLED(mc_client, xbt_log_priority_debug)) + kernel::EngineImpl::get_instance()->display_all_actor_status(); +#if HAVE_SMPI + XBT_DEBUG("Smpi_enabled: %d", SMPI_is_inited()); + if (SMPI_is_inited()) + SMPI_finalize(); +#endif + } + coverage_checkpoint(); + xbt_assert(channel_.send(MessageType::FINALIZE_REPLY) == 0, "Could not answer to FINALIZE"); + std::fflush(stdout); + if (terminate_asap) + ::_Exit(0); +} +void AppSide::handle_actors_status() const +{ + auto const& actor_list = kernel::EngineImpl::get_instance()->get_actor_list(); + const int num_actors = actor_list.size(); + XBT_DEBUG("Serialize the actors to answer ACTORS_STATUS from the checker. %d actors to go.", num_actors); + + std::vector status(num_actors); + int i = 0; + int total_transitions = 0; + + for (auto const& [aid, actor] : actor_list) { + status[i].aid = aid; + status[i].enabled = mc::actor_is_enabled(actor); + status[i].max_considered = actor->simcall_.observer_->get_max_consider(); + status[i].n_transitions = mc::actor_is_enabled(actor) ? status[i].max_considered : 0; + total_transitions += status[i].n_transitions; + i++; + } + + struct s_mc_message_actors_status_answer_t answer { + MessageType::ACTORS_STATUS_REPLY, num_actors, total_transitions + }; + + xbt_assert(channel_.send(answer) == 0, "Could not send ACTORS_STATUS_REPLY msg"); + if (answer.count > 0) { + size_t size = status.size() * sizeof(s_mc_message_actors_status_one_t); + xbt_assert(channel_.send(status.data(), size) == 0, "Could not send ACTORS_STATUS_REPLY data"); + } + + // Serialize each transition to describe what each actor is doing + if (total_transitions > 0) { + std::vector probes(total_transitions); + auto probes_iter = probes.begin(); + + for (const auto& actor_status : status) { + if (not actor_status.enabled) + continue; + + const auto& actor = actor_list.at(actor_status.aid); + const int max_considered = actor_status.max_considered; + + for (int times_considered = 0; times_considered < max_considered; times_considered++, probes_iter++) { + std::stringstream stream; + s_mc_message_simcall_probe_one_t& probe = *probes_iter; + + if (actor->simcall_.observer_ != nullptr) { + actor->simcall_.observer_->prepare(times_considered); + actor->simcall_.observer_->serialize(stream); + } else { + stream << (short)mc::Transition::Type::UNKNOWN; + } + + std::string str = stream.str(); + xbt_assert(str.size() + 1 <= probe.buffer.size(), + "The serialized transition is too large for the buffer. Please fix the code."); + strncpy(probe.buffer.data(), str.c_str(), probe.buffer.size() - 1); + probe.buffer.back() = '\0'; + } + // NOTE: We do NOT need to reset `times_considered` for each actor's + // simcall observer here to the "original" value (i.e. the value BEFORE + // multiple prepare() calls were made for serialization purposes) since + // each SIMCALL_EXECUTE provides a `times_considered` to be used to prepare + // the transition before execution. + } + XBT_DEBUG("Deliver ACTOR_TRANSITION_PROBE payload"); + + for (const auto& probe : probes) + xbt_assert(channel_.send(probe) == 0, "Could not send ACTOR_TRANSITION_PROBE payload"); + } } #define assert_msg_size(_name_, _type_) \ @@ -117,6 +235,8 @@ void AppSide::handle_messages() const ssize_t received_size = channel_.receive(message_buffer.data(), message_buffer.size()); xbt_assert(received_size >= 0, "Could not receive commands from the model-checker"); + xbt_assert(static_cast(received_size) >= sizeof(s_mc_message_t), "Cannot handle short message (size=%zd)", + received_size); const s_mc_message_t* message = (s_mc_message_t*)message_buffer.data(); switch (message->type) { @@ -129,80 +249,20 @@ void AppSide::handle_messages() const assert_msg_size("MESSAGE_CONTINUE", s_mc_message_t); return; - case MessageType::SIMCALL_HANDLE: - assert_msg_size("SIMCALL_HANDLE", s_mc_message_simcall_handle_t); - handle_simcall_execute((s_mc_message_simcall_handle_t*)message_buffer.data()); - break; - - case MessageType::SIMCALL_IS_VISIBLE: { - assert_msg_size("SIMCALL_IS_VISIBLE", s_mc_message_simcall_is_visible_t); - auto msg_simcall = (s_mc_message_simcall_is_visible_t*)message_buffer.data(); - const kernel::actor::ActorImpl* actor = kernel::actor::ActorImpl::by_pid(msg_simcall->aid); - xbt_assert(actor != nullptr, "Invalid pid %d", msg_simcall->aid); - xbt_assert(actor->simcall_.observer_, "The transition of %s has no observer", actor->get_cname()); - bool value = actor->simcall_.observer_->is_visible(); - - // Send result: - s_mc_message_simcall_is_visible_answer_t answer{MessageType::SIMCALL_IS_VISIBLE_ANSWER, value}; - xbt_assert(channel_.send(answer) == 0, "Could not send response"); + case MessageType::SIMCALL_EXECUTE: + assert_msg_size("SIMCALL_EXECUTE", s_mc_message_simcall_execute_t); + handle_simcall_execute((s_mc_message_simcall_execute_t*)message_buffer.data()); break; - } - case MessageType::SIMCALL_TO_STRING: { - assert_msg_size("SIMCALL_TO_STRING", s_mc_message_simcall_to_string_t); - auto msg_simcall = (s_mc_message_simcall_to_string_t*)message_buffer.data(); - const kernel::actor::ActorImpl* actor = kernel::actor::ActorImpl::by_pid(msg_simcall->aid); - xbt_assert(actor != nullptr, "Invalid pid %d", msg_simcall->aid); - xbt_assert(actor->simcall_.observer_, "The transition of %s has no observer", actor->get_cname()); - std::string value = actor->simcall_.observer_->to_string(msg_simcall->time_considered); - - // Send result: - s_mc_message_simcall_to_string_answer_t answer{MessageType::SIMCALL_TO_STRING_ANSWER, {0}}; - value.copy(answer.value, (sizeof answer.value) - 1); // last byte was set to '\0' by initialization above - xbt_assert(channel_.send(answer) == 0, "Could not send response"); - break; - } - - case MessageType::SIMCALL_DOT_LABEL: { - assert_msg_size("SIMCALL_DOT_LABEL", s_mc_message_simcall_to_string_t); - auto msg_simcall = (s_mc_message_simcall_to_string_t*)message_buffer.data(); - const kernel::actor::ActorImpl* actor = kernel::actor::ActorImpl::by_pid(msg_simcall->aid); - xbt_assert(actor != nullptr, "Invalid pid %d", msg_simcall->aid); - xbt_assert(actor->simcall_.observer_, "The transition of %s has no observer", actor->get_cname()); - std::string value = actor->simcall_.observer_->dot_label(); - - // Send result: - s_mc_message_simcall_to_string_answer_t answer{MessageType::SIMCALL_TO_STRING_ANSWER, {0}}; - value.copy(answer.value, (sizeof answer.value) - 1); // last byte was set to '\0' by initialization above - xbt_assert(channel_.send(answer) == 0, "Could not send response"); - break; - } - - case MessageType::ACTOR_ENABLED: - assert_msg_size("ACTOR_ENABLED", s_mc_message_actor_enabled_t); - handle_actor_enabled((s_mc_message_actor_enabled_t*)message_buffer.data()); + case MessageType::FINALIZE: + assert_msg_size("FINALIZE", s_mc_message_int_t); + handle_finalize((s_mc_message_int_t*)message_buffer.data()); break; - case MessageType::FINALIZE: { - assert_msg_size("FINALIZE", s_mc_message_int_t); - bool terminate_asap = ((s_mc_message_int_t*)message_buffer.data())->value; - XBT_DEBUG("Finalize (terminate = %d)", (int)terminate_asap); - if (not terminate_asap) { - if (XBT_LOG_ISENABLED(mc_client, xbt_log_priority_debug)) - simix_global->display_all_actor_status(); -#if HAVE_SMPI - XBT_DEBUG("Smpi_enabled: %d", (int)smpi_enabled()); - if (smpi_enabled()) - SMPI_finalize(); -#endif - } - coverage_checkpoint(); - xbt_assert(channel_.send(MessageType::DEADLOCK_CHECK_REPLY) == 0, // DEADLOCK_CHECK_REPLY, really? - "Could not answer to FINALIZE"); - if (terminate_asap) - ::_Exit(0); + case MessageType::ACTORS_STATUS: + assert_msg_size("ACTORS_STATUS", s_mc_message_t); + handle_actors_status(); break; - } default: xbt_die("Received unexpected message %s (%i)", to_c_str(message->type), static_cast(message->type)); @@ -213,7 +273,13 @@ void AppSide::handle_messages() const void AppSide::main_loop() const { + simgrid::mc::processes_time.resize(simgrid::kernel::actor::ActorImpl::get_maxpid()); + MC_ignore_heap(simgrid::mc::processes_time.data(), + simgrid::mc::processes_time.size() * sizeof(simgrid::mc::processes_time[0])); + + sthread_disable(); coverage_checkpoint(); + sthread_enable(); while (true) { simgrid::mc::execute_actors(); xbt_assert(channel_.send(MessageType::WAITING) == 0, "Could not send WAITING message to model-checker"); @@ -229,6 +295,9 @@ void AppSide::report_assertion_failure() const void AppSide::ignore_memory(void* addr, std::size_t size) const { + if (not MC_is_active()) + return; + s_mc_message_ignore_memory_t message; message.type = MessageType::IGNORE_MEMORY; message.addr = (std::uintptr_t)addr; @@ -238,6 +307,9 @@ void AppSide::ignore_memory(void* addr, std::size_t size) const void AppSide::ignore_heap(void* address, std::size_t size) const { + if (not MC_is_active()) + return; + const s_xbt_mheap_t* heap = mmalloc_get_current_heap(); s_mc_message_ignore_heap_t message; @@ -258,6 +330,9 @@ void AppSide::ignore_heap(void* address, std::size_t size) const void AppSide::unignore_heap(void* address, std::size_t size) const { + if (not MC_is_active()) + return; + s_mc_message_ignore_memory_t message; message.type = MessageType::UNIGNORE_HEAP; message.addr = (std::uintptr_t)address; @@ -267,17 +342,30 @@ void AppSide::unignore_heap(void* address, std::size_t size) const void AppSide::declare_symbol(const char* name, int* value) const { + if (not MC_is_active()) + return; + s_mc_message_register_symbol_t message; + memset(&message, 0, sizeof(message)); message.type = MessageType::REGISTER_SYMBOL; xbt_assert(strlen(name) + 1 <= message.name.size(), "Symbol is too long"); - strncpy(message.name.data(), name, message.name.size()); + strncpy(message.name.data(), name, message.name.size() - 1); message.callback = nullptr; message.data = value; xbt_assert(channel_.send(message) == 0, "Could send REGISTER_SYMBOL message to model-checker"); } +/** Register a stack in the model checker + * + * The stacks are allocated in the heap. The MC handle them specifically + * when we analyze/compare the content of the heap so it must be told where + * they are with this function. + */ void AppSide::declare_stack(void* stack, size_t size, ucontext_t* context) const { + if (not MC_is_active()) + return; + const s_xbt_mheap_t* heap = mmalloc_get_current_heap(); s_stack_region_t region; @@ -292,5 +380,4 @@ void AppSide::declare_stack(void* stack, size_t size, ucontext_t* context) const message.stack_region = region; xbt_assert(channel_.send(message) == 0, "Could not send STACK_REGION to model-checker"); } -} // namespace mc -} // namespace simgrid +} // namespace simgrid::mc