X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/78a473edeca3dbc88eccbd5d882ac0494dce2360..9ec4c698631ec44c39b691c6eef8e847379e2e66:/src/mc/remote/AppSide.cpp diff --git a/src/mc/remote/AppSide.cpp b/src/mc/remote/AppSide.cpp index 4518895d75..ec9e43a6e3 100644 --- a/src/mc/remote/AppSide.cpp +++ b/src/mc/remote/AppSide.cpp @@ -1,17 +1,26 @@ -/* Copyright (c) 2015-2021. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2015-2022. 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 "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/mc/checker/SimcallObserver.hpp" +#include "src/kernel/actor/SimcallObserver.hpp" +#include "src/mc/mc_base.hpp" #include "src/mc/remote/RemoteProcess.hpp" -#include "src/xbt_modinter.h" /* mmalloc_preinit to get the default mmalloc arena address */ +#if HAVE_SMPI +#include "src/smpi/include/private.hpp" +#endif +#include "xbt/coverage.h" +#include "xbt/str.h" +#include "xbt/xbt_modinter.h" /* mmalloc_preinit to get the default mmalloc arena address */ #include #include +#include // setvbuf #include #include #include @@ -21,8 +30,7 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_client, mc, "MC client logic"); -namespace simgrid { -namespace mc { +namespace simgrid::mc { std::unique_ptr AppSide::instance_; @@ -37,16 +45,17 @@ AppSide* AppSide::initialize() _sg_do_model_check = 1; + 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: int type; socklen_t socklen = sizeof(type); - if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &socklen) != 0) - xbt_die("Could not check socket type"); + xbt_assert(getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &socklen) == 0, "Could not check socket type"); xbt_assert(type == SOCK_SEQPACKET, "Unexpected socket type %i", type); XBT_DEBUG("Model-checked application found expected socket type"); @@ -61,12 +70,11 @@ AppSide* AppSide::initialize() #else #error "no ptrace equivalent coded for this platform" #endif - if (errno != 0 || raise(SIGSTOP) != 0) - xbt_die("Could not wait for the model-checker (errno = %d: %s)", errno, strerror(errno)); + 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(); @@ -75,38 +83,82 @@ 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& actor_list = kernel::EngineImpl::get_instance()->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); + }); // 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_continue(const s_mc_message_t*) const +void AppSide::handle_simcall_execute(const s_mc_message_simcall_execute_t* message) const { - /* Nothing to do */ + 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_simcall(const s_mc_message_simcall_handle_t* message) const + +void AppSide::handle_finalize(const s_mc_message_int_t* msg) const { - kernel::actor::ActorImpl* process = kernel::actor::ActorImpl::by_PID(message->pid_); - xbt_assert(process != nullptr, "Invalid pid %lu", message->pid_); - process->simcall_handle(message->times_considered_); - if (channel_.send(MessageType::WAITING)) - xbt_die("Could not send MESSAGE_WAITING to model-checker"); + 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_actor_enabled(const s_mc_message_actor_enabled_t* msg) const +void AppSide::handle_actors_status() 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); + auto const& actor_list = kernel::EngineImpl::get_instance()->get_actor_list(); + int count = actor_list.size(); + + struct s_mc_message_actors_status_answer_t answer { + MessageType::ACTORS_STATUS_REPLY, count + }; + s_mc_message_actors_status_one_t status[count]; + int i = 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(); + i++; + } + xbt_assert(channel_.send(answer) == 0, "Could not send ACTORS_STATUS_REPLY msg"); + xbt_assert(channel_.send(status, sizeof(status)) == 0, "Could not send ACTORS_STATUS_REPLY data"); } #define assert_msg_size(_name_, _type_) \ @@ -115,7 +167,7 @@ void AppSide::handle_actor_enabled(const s_mc_message_actor_enabled_t* msg) cons void AppSide::handle_messages() const { - while (true) { + while (true) { // Until we get a CONTINUE message XBT_DEBUG("Waiting messages from model-checker"); std::array message_buffer; @@ -132,61 +184,21 @@ void AppSide::handle_messages() const case MessageType::CONTINUE: assert_msg_size("MESSAGE_CONTINUE", s_mc_message_t); - handle_continue(message); return; - case MessageType::SIMCALL_HANDLE: - assert_msg_size("SIMCALL_HANDLE", s_mc_message_simcall_handle_t); - handle_simcall((s_mc_message_simcall_handle_t*)message_buffer.data()); + 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_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"); - 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"); + 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::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::ACTORS_STATUS: + assert_msg_size("ACTORS_STATUS", s_mc_message_t); + handle_actors_status(); break; default: @@ -198,8 +210,13 @@ 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])); + + coverage_checkpoint(); while (true) { - simgrid::mc::wait_for_requests(); + simgrid::mc::execute_actors(); xbt_assert(channel_.send(MessageType::WAITING) == 0, "Could not send WAITING message to model-checker"); this->handle_messages(); } @@ -207,23 +224,27 @@ void AppSide::main_loop() const void AppSide::report_assertion_failure() const { - if (channel_.send(MessageType::ASSERTION_FAILED)) - xbt_die("Could not send assertion to model-checker"); + xbt_assert(channel_.send(MessageType::ASSERTION_FAILED) == 0, "Could not send assertion to model-checker"); this->handle_messages(); } 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; message.size = size; - if (channel_.send(message)) - xbt_die("Could not send IGNORE_MEMORY message to model-checker"); + xbt_assert(channel_.send(message) == 0, "Could not send IGNORE_MEMORY message to model-checker"); } 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; @@ -239,35 +260,44 @@ void AppSide::ignore_heap(void* address, std::size_t size) const heap->heapinfo[message.block].busy_frag.ignore[message.fragment]++; } - if (channel_.send(message)) - xbt_die("Could not send ignored region to MCer"); + xbt_assert(channel_.send(message) == 0, "Could not send ignored region to MCer"); } 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; message.size = size; - if (channel_.send(message)) - xbt_die("Could not send IGNORE_HEAP message to model-checker"); + xbt_assert(channel_.send(message) == 0, "Could not send IGNORE_HEAP message to model-checker"); } void AppSide::declare_symbol(const char* name, int* value) const { s_mc_message_register_symbol_t message; + memset(&message, 0, sizeof(message)); message.type = MessageType::REGISTER_SYMBOL; - if (strlen(name) + 1 > message.name.size()) - xbt_die("Symbol is too long"); + xbt_assert(strlen(name) + 1 <= message.name.size(), "Symbol is too long"); strncpy(message.name.data(), name, message.name.size()); message.callback = nullptr; message.data = value; - if (channel_.send(message)) - xbt_die("Could send REGISTER_SYMBOL message to model-checker"); + 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; @@ -280,8 +310,6 @@ void AppSide::declare_stack(void* stack, size_t size, ucontext_t* context) const s_mc_message_stack_region_t message; message.type = MessageType::STACK_REGION; message.stack_region = region; - if (channel_.send(message)) - xbt_die("Could not send STACK_REGION to model-checker"); + xbt_assert(channel_.send(message) == 0, "Could not send STACK_REGION to model-checker"); } -} // namespace mc -} // namespace simgrid +} // namespace simgrid::mc