X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/08f744b9a55745ac1b1dcf0ed2ea735471cd7f89..7792ce44dc2744211836680af4775a35a823b242:/src/mc/checker/SafetyChecker.cpp diff --git a/src/mc/checker/SafetyChecker.cpp b/src/mc/checker/SafetyChecker.cpp index ecc8ca3556..f391d1a95b 100644 --- a/src/mc/checker/SafetyChecker.cpp +++ b/src/mc/checker/SafetyChecker.cpp @@ -1,4 +1,4 @@ -/* Copyright (c) 2016-2019. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2016-2020. 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. */ @@ -23,29 +23,33 @@ #include "src/mc/mc_record.hpp" #include "src/mc/mc_request.hpp" #include "src/mc/mc_smx.hpp" +#include "src/mc/mc_api.hpp" #include "src/xbt/mmalloc/mmprivate.h" -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_safety, mc, - "Logging specific to MC safety verification "); +using mcapi = simgrid::mc::mc_api; + +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_safety, mc, "Logging specific to MC safety verification "); + namespace simgrid { namespace mc { -void SafetyChecker::check_non_termination(simgrid::mc::State* current_state) +void SafetyChecker::check_non_termination(const State* current_state) { for (auto state = stack_.rbegin(); state != stack_.rend(); ++state) - if (snapshot_equal((*state)->system_state.get(), current_state->system_state.get())) { + if (mcapi::get().snapshot_equal((*state)->system_state_.get(), current_state->system_state_.get())) { XBT_INFO("Non-progressive cycle: state %d -> state %d", (*state)->num_, current_state->num_); XBT_INFO("******************************************"); XBT_INFO("*** NON-PROGRESSIVE CYCLE DETECTED ***"); XBT_INFO("******************************************"); XBT_INFO("Counter-example execution trace:"); - for (auto const& s : mc_model_checker->getChecker()->get_textual_trace()) + auto checker = mcapi::get().mc_get_checker(); + for (auto const& s : checker->get_textual_trace()) XBT_INFO(" %s", s.c_str()); - simgrid::mc::dumpRecordPath(); - simgrid::mc::session->log_state(); + mcapi::get().dump_record_path(); + mcapi::get().log_state(); - throw simgrid::mc::TerminationError(); + throw TerminationError(); } } @@ -63,9 +67,7 @@ std::vector SafetyChecker::get_textual_trace() // override for (auto const& state : stack_) { int value = state->transition_.argument_; smx_simcall_t req = &state->executed_req_; - if (req) - trace.push_back(simgrid::mc::request_to_string( - req, value, simgrid::mc::RequestType::executed)); + trace.push_back(mcapi::get().request_to_string(req, value, RequestType::executed)); } return trace; } @@ -73,8 +75,8 @@ std::vector SafetyChecker::get_textual_trace() // override void SafetyChecker::log_state() // override { XBT_INFO("Expanded states = %lu", expanded_states_count_); - XBT_INFO("Visited states = %lu", mc_model_checker->visited_states); - XBT_INFO("Executed transitions = %lu", mc_model_checker->executed_transitions); + XBT_INFO("Visited states = %lu", mcapi::get().mc_get_visited_states()); + XBT_INFO("Executed transitions = %lu", mcapi::get().mc_get_executed_trans()); } void SafetyChecker::run() @@ -84,15 +86,14 @@ void SafetyChecker::run() * This allows one to explore the call stack at will. */ while (not stack_.empty()) { - /* Get current state */ - simgrid::mc::State* state = stack_.back().get(); + State* state = stack_.back().get(); XBT_DEBUG("**************************************************"); XBT_VERB("Exploration depth=%zu (state=%p, num %d)(%zu interleave)", stack_.size(), state, state->num_, state->interleave_size()); - mc_model_checker->visited_states++; + mcapi::get().mc_inc_visited_states(); // Backtrack if we reached the maximum depth if (stack_.size() > (std::size_t)_sg_mc_max_depth) { @@ -113,7 +114,7 @@ void SafetyChecker::run() // Search an enabled transition in the current state; backtrack if the interleave set is empty // get_request also sets state.transition to be the one corresponding to the returned req - smx_simcall_t req = MC_state_get_request(state); + smx_simcall_t req = mcapi::get().mc_state_choose_request(state); // req is now the transition of the process that was selected to be executed if (req == nullptr) { @@ -125,22 +126,20 @@ void SafetyChecker::run() // If there are processes to interleave and the maximum depth has not been // reached then perform one step of the exploration algorithm. - XBT_DEBUG( - "Execute: %s", - simgrid::mc::request_to_string(req, state->transition_.argument_, simgrid::mc::RequestType::simix).c_str()); + XBT_DEBUG("Execute: %s", mcapi::get().request_to_string(req, state->transition_.argument_, RequestType::simix).c_str()); std::string req_str; if (dot_output != nullptr) - req_str = simgrid::mc::request_get_dot_output(req, state->transition_.argument_); + req_str = mcapi::get().request_get_dot_output(req, state->transition_.argument_); - mc_model_checker->executed_transitions++; + mcapi::get().mc_inc_executed_trans(); /* Actually answer the request: let execute the selected request (MCed does one step) */ - this->get_session().execute(state->transition_); + mcapi::get().execute(state->transition_); /* Create the new expanded state (copy the state of MCed into our MCer data) */ - std::unique_ptr next_state = - std::unique_ptr(new simgrid::mc::State(++expanded_states_count_)); + ++expanded_states_count_; + auto next_state = std::make_unique(expanded_states_count_); if (_sg_mc_termination) this->check_non_termination(next_state.get()); @@ -151,13 +150,13 @@ void SafetyChecker::run() /* If this is a new state (or if we don't care about state-equality reduction) */ if (visited_state_ == nullptr) { - /* Get an enabled process and insert it in the interleave set of the next state */ - for (auto& remoteActor : mc_model_checker->process().actors()) { + auto actors = mcapi::get().get_actors(); + for (auto& remoteActor : actors) { auto actor = remoteActor.copy.get_buffer(); - if (simgrid::mc::actor_is_enabled(actor)) { + if (mcapi::get().actor_is_enabled(actor->get_pid())) { next_state->add_interleaving_set(actor); - if (reductionMode_ == simgrid::mc::ReductionMode::dpor) + if (reductionMode_ == ReductionMode::dpor) break; // With DPOR, we take the first enabled transition } } @@ -174,7 +173,7 @@ void SafetyChecker::run() } XBT_INFO("No property violation found."); - simgrid::mc::session->log_state(); + mcapi::get().log_state(); } void SafetyChecker::backtrack() @@ -182,41 +181,37 @@ void SafetyChecker::backtrack() stack_.pop_back(); /* Check for deadlocks */ - if (mc_model_checker->checkDeadlock()) { - MC_show_deadlock(); - throw simgrid::mc::DeadlockError(); + if (mcapi::get().mc_check_deadlock()) { + mcapi::get().mc_show_deadlock(); + throw DeadlockError(); } - /* Traverse the stack backwards until a state with a non empty interleave - set is found, deleting all the states that have it empty in the way. - For each deleted state, check if the request that has generated it - (from it's predecessor state), depends on any other previous request - executed before it. If it does then add it to the interleave set of the - state that executed that previous request. */ + /* Traverse the stack backwards until a state with a non empty interleave set is found, deleting all the states that + * have it empty in the way. For each deleted state, check if the request that has generated it (from its + * predecessor state), depends on any other previous request executed before it. If it does then add it to the + * interleave set of the state that executed that previous request. */ while (not stack_.empty()) { - std::unique_ptr state = std::move(stack_.back()); + std::unique_ptr state = std::move(stack_.back()); stack_.pop_back(); - if (reductionMode_ == simgrid::mc::ReductionMode::dpor) { - smx_simcall_t req = &state->internal_req; - if (req->call_ == SIMCALL_MUTEX_LOCK || req->call_ == SIMCALL_MUTEX_TRYLOCK) + if (reductionMode_ == ReductionMode::dpor) { + smx_simcall_t req = &state->internal_req_; + if (req->call_ == simix::Simcall::MUTEX_LOCK || req->call_ == simix::Simcall::MUTEX_TRYLOCK) xbt_die("Mutex is currently not supported with DPOR, use --cfg=model-check/reduction:none"); - const smx_actor_t issuer = MC_smx_simcall_get_issuer(req); + const kernel::actor::ActorImpl* issuer = mcapi::get().simcall_get_issuer(req); for (auto i = stack_.rbegin(); i != stack_.rend(); ++i) { - simgrid::mc::State* prev_state = i->get(); - if (simgrid::mc::request_depend(req, &prev_state->internal_req)) { + State* prev_state = i->get(); + if (mcapi::get().request_depend(req, &prev_state->internal_req_)) { if (XBT_LOG_ISENABLED(mc_safety, xbt_log_priority_debug)) { XBT_DEBUG("Dependent Transitions:"); int value = prev_state->transition_.argument_; smx_simcall_t prev_req = &prev_state->executed_req_; - XBT_DEBUG("%s (state=%d)", - simgrid::mc::request_to_string(prev_req, value, simgrid::mc::RequestType::internal).c_str(), + XBT_DEBUG("%s (state=%d)", mcapi::get().request_to_string(prev_req, value, RequestType::internal).c_str(), prev_state->num_); value = state->transition_.argument_; prev_req = &state->executed_req_; - XBT_DEBUG("%s (state=%d)", - simgrid::mc::request_to_string(prev_req, value, simgrid::mc::RequestType::executed).c_str(), + XBT_DEBUG("%s (state=%d)", mcapi::get().request_to_string(prev_req, value, RequestType::executed).c_str(), state->num_); } @@ -224,21 +219,16 @@ void SafetyChecker::backtrack() prev_state->add_interleaving_set(issuer); else XBT_DEBUG("Process %p is in done set", req->issuer_); - break; - - } else if (req->issuer_ == prev_state->internal_req.issuer_) { - - XBT_DEBUG("Simcall %s and %s with same issuer", SIMIX_simcall_name(req->call_), - SIMIX_simcall_name(prev_state->internal_req.call_)); + } else if (req->issuer_ == prev_state->internal_req_.issuer_) { + XBT_DEBUG("Simcall %s and %s with same issuer", mcapi::get().simcall_get_name(req->call_), + mcapi::get().simcall_get_name(prev_state->internal_req_.call_)); break; - } else { - - const smx_actor_t previous_issuer = MC_smx_simcall_get_issuer(&prev_state->internal_req); + const kernel::actor::ActorImpl* previous_issuer = mcapi::get().simcall_get_issuer(&prev_state->internal_req_); XBT_DEBUG("Simcall %s, process %ld (state %d) and simcall %s, process %ld (state %d) are independent", - SIMIX_simcall_name(req->call_), issuer->get_pid(), state->num_, - SIMIX_simcall_name(prev_state->internal_req.call_), previous_issuer->get_pid(), prev_state->num_); + mcapi::get().simcall_get_name(req->call_), issuer->get_pid(), state->num_, + mcapi::get().simcall_get_name(prev_state->internal_req_.call_), previous_issuer->get_pid(), prev_state->num_); } } } @@ -259,55 +249,57 @@ void SafetyChecker::backtrack() void SafetyChecker::restore_state() { /* Intermediate backtracking */ - simgrid::mc::State* last_state = stack_.back().get(); - if (last_state->system_state) { - last_state->system_state->restore(&mc_model_checker->process()); + const State* last_state = stack_.back().get(); + if (last_state->system_state_) { + mc_api::get().restore_state(last_state->system_state_); return; } /* Restore the initial state */ - simgrid::mc::session->restore_initial_state(); + mcapi::get().restore_initial_state(); /* Traverse the stack from the state at position start and re-execute the transitions */ - for (std::unique_ptr const& state : stack_) { + for (std::unique_ptr const& state : stack_) { if (state == stack_.back()) break; - session->execute(state->transition_); + mcapi::get().execute(state->transition_); /* Update statistics */ - mc_model_checker->visited_states++; - mc_model_checker->executed_transitions++; + mcapi::get().mc_inc_visited_states(); + mcapi::get().mc_inc_executed_trans(); } } SafetyChecker::SafetyChecker(Session& s) : Checker(s) { - reductionMode_ = simgrid::mc::reduction_mode; + reductionMode_ = reduction_mode; if (_sg_mc_termination) - reductionMode_ = simgrid::mc::ReductionMode::none; - else if (reductionMode_ == simgrid::mc::ReductionMode::unset) - reductionMode_ = simgrid::mc::ReductionMode::dpor; + reductionMode_ = ReductionMode::none; + else if (reductionMode_ == ReductionMode::unset) + reductionMode_ = ReductionMode::dpor; if (_sg_mc_termination) XBT_INFO("Check non progressive cycles"); else XBT_INFO("Check a safety property. Reduction is: %s.", - (reductionMode_ == simgrid::mc::ReductionMode::none ? "none": - (reductionMode_ == simgrid::mc::ReductionMode::dpor ? "dpor": "unknown"))); - simgrid::mc::session->initialize(); + (reductionMode_ == ReductionMode::none ? "none" + : (reductionMode_ == ReductionMode::dpor ? "dpor" : "unknown"))); + + mcapi::get().session_initialize(); XBT_DEBUG("Starting the safety algorithm"); - std::unique_ptr initial_state = - std::unique_ptr(new simgrid::mc::State(++expanded_states_count_)); + ++expanded_states_count_; + auto initial_state = std::make_unique(expanded_states_count_); XBT_DEBUG("**************************************************"); XBT_DEBUG("Initial state"); /* Get an enabled actor and insert it in the interleave set of the initial state */ - for (auto& actor : mc_model_checker->process().actors()) - if (simgrid::mc::actor_is_enabled(actor.copy.get_buffer())) { + auto actors = mcapi::get().get_actors(); + for (auto& actor : actors) + if (mcapi::get().actor_is_enabled(actor.copy.get_buffer()->get_pid())) { initial_state->add_interleaving_set(actor.copy.get_buffer()); - if (reductionMode_ != simgrid::mc::ReductionMode::none) + if (reductionMode_ != ReductionMode::none) break; } @@ -319,5 +311,5 @@ Checker* createSafetyChecker(Session& s) return new SafetyChecker(s); } -} -} +} // namespace mc +} // namespace simgrid