-/* Copyright (c) 2016-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2016-2021. 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 <xbt/log.h>
#include <xbt/sysdep.h>
-#include "src/mc/Session.hpp"
#include "src/mc/Transition.hpp"
#include "src/mc/VisitedState.hpp"
#include "src/mc/checker/SafetyChecker.hpp"
#include "src/xbt/mmalloc/mmprivate.h"
+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(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());
- dumpRecordPath();
- session->log_state();
+ mcapi::get().dump_record_path();
+ mcapi::get().log_state();
throw TerminationError();
}
for (auto const& state : stack_) {
int value = state->transition_.argument_;
smx_simcall_t req = &state->executed_req_;
- if (req)
- trace.push_back(request_to_string(req, value, RequestType::executed));
+ trace.push_back(mcapi::get().request_to_string(req, value, RequestType::executed));
}
return trace;
}
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()
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) {
// 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_choose_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) {
// 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", request_to_string(req, state->transition_.argument_, 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 = 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<State> next_state = std::unique_ptr<State>(new State(++expanded_states_count_));
+ ++expanded_states_count_;
+ auto next_state = std::make_unique<State>(expanded_states_count_);
if (_sg_mc_termination)
this->check_non_termination(next_state.get());
/* 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 (actor_is_enabled(actor)) {
+ if (mcapi::get().actor_is_enabled(actor->get_pid())) {
next_state->add_interleaving_set(actor);
if (reductionMode_ == ReductionMode::dpor)
break; // With DPOR, we take the first enabled transition
}
XBT_INFO("No property violation found.");
- session->log_state();
+ mcapi::get().log_state();
}
void SafetyChecker::backtrack()
stack_.pop_back();
/* Check for deadlocks */
- if (mc_model_checker->checkDeadlock()) {
- MC_show_deadlock();
+ if (mcapi::get().mc_check_deadlock()) {
+ mcapi::get().mc_show_deadlock();
throw DeadlockError();
}
std::unique_ptr<State> state = std::move(stack_.back());
stack_.pop_back();
if (reductionMode_ == ReductionMode::dpor) {
- smx_simcall_t req = &state->internal_req;
- if (req->call_ == SIMCALL_MUTEX_LOCK || req->call_ == SIMCALL_MUTEX_TRYLOCK)
+ 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) {
State* prev_state = i->get();
- if (request_depend(req, &prev_state->internal_req)) {
+ 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, 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, RequestType::executed).c_str(),
+ XBT_DEBUG("%s (state=%d)", mcapi::get().request_to_string(prev_req, value, RequestType::executed).c_str(),
state->num_);
}
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_);
}
}
}
void SafetyChecker::restore_state()
{
/* Intermediate backtracking */
- 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 */
- 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<State> 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)
+SafetyChecker::SafetyChecker() : Checker()
{
reductionMode_ = reduction_mode;
if (_sg_mc_termination)
XBT_INFO("Check a safety property. Reduction is: %s.",
(reductionMode_ == ReductionMode::none ? "none"
: (reductionMode_ == ReductionMode::dpor ? "dpor" : "unknown")));
- session->initialize();
+
+ mcapi::get().session_initialize();
XBT_DEBUG("Starting the safety algorithm");
- std::unique_ptr<State> initial_state = std::unique_ptr<State>(new State(++expanded_states_count_));
+ ++expanded_states_count_;
+ auto initial_state = std::make_unique<State>(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 (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_ != ReductionMode::none)
break;
stack_.push_back(std::move(initial_state));
}
-Checker* createSafetyChecker(Session& s)
+Checker* createSafetyChecker()
{
- return new SafetyChecker(s);
+ return new SafetyChecker();
}
} // namespace mc
