-/* Copyright (c) 2008-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2008-2021. 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 <assert.h>
+#include "src/mc/mc_state.hpp"
+#include "src/mc/mc_config.hpp"
+#include "src/mc/mc_api.hpp"
-#include <xbt/log.h>
-#include <xbt/sysdep.h>
-#include <xbt/fifo.h>
-
-#include "src/simix/smx_private.h"
-#include "src/mc/mc_state.h"
-#include "src/mc/mc_request.h"
-#include "src/mc/mc_private.h"
-#include "src/mc/mc_comm_pattern.h"
-#include "src/mc/mc_smx.h"
-#include "src/mc/mc_xbt.hpp"
+#include <boost/range/algorithm.hpp>
using simgrid::mc::remote;
+using mcapi = simgrid::mc::mc_api;
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc,
- "Logging specific to MC (state)");
-
-extern "C" {
+namespace simgrid {
+namespace mc {
-/**
- * \brief Creates a state data structure used by the exploration algorithm
- */
-mc_state_t MC_state_new()
+State::State(unsigned long state_number) : num_(state_number)
{
- mc_state_t state = xbt_new0(s_mc_state_t, 1);
-
- state->max_pid = MC_smx_get_maxpid();
- state->proc_status = xbt_new0(s_mc_procstate_t, state->max_pid);
- state->system_state = nullptr;
- state->num = ++mc_stats->expanded_states;
- state->in_visited_states = 0;
- state->incomplete_comm_pattern = nullptr;
+ this->internal_comm_.clear();
+ auto maxpid = mcapi::get().get_maxpid();
+ actor_states_.resize(maxpid);
/* Stateful model checking */
- if((_sg_mc_checkpoint > 0 && (mc_stats->expanded_states % _sg_mc_checkpoint == 0)) || _sg_mc_termination){
- state->system_state = simgrid::mc::take_snapshot(state->num);
- if(_sg_mc_comms_determinism || _sg_mc_send_determinism){
- MC_state_copy_incomplete_communications_pattern(state);
- MC_state_copy_index_communications_pattern(state);
+ if ((_sg_mc_checkpoint > 0 && (state_number % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
+ auto snapshot_ptr = mcapi::get().take_snapshot(num_);
+ system_state_ = std::shared_ptr<simgrid::mc::Snapshot>(snapshot_ptr);
+ if (_sg_mc_comms_determinism || _sg_mc_send_determinism) {
+ copy_incomplete_comm_pattern();
+ copy_index_comm_pattern();
}
}
- return state;
-}
-
-/**
- * \brief Deletes a state data structure
- * \param trans The state to be deleted
- */
-void MC_state_delete(mc_state_t state, int free_snapshot){
- if (state->system_state && free_snapshot)
- delete state->system_state;
- if(_sg_mc_comms_determinism || _sg_mc_send_determinism){
- xbt_free(state->index_comm);
- xbt_free(state->incomplete_comm_pattern);
- }
- xbt_free(state->proc_status);
- xbt_free(state);
-}
-
-void MC_state_interleave_process(mc_state_t state, smx_process_t process)
-{
- assert(state);
- state->proc_status[process->pid].state = MC_INTERLEAVE;
- state->proc_status[process->pid].interleave_count = 0;
-}
-
-void MC_state_remove_interleave_process(mc_state_t state, smx_process_t process)
-{
- if (state->proc_status[process->pid].state == MC_INTERLEAVE)
- state->proc_status[process->pid].state = MC_DONE;
}
-unsigned int MC_state_interleave_size(mc_state_t state)
+std::size_t State::interleave_size() const
{
- unsigned int i, size = 0;
- for (i = 0; i < state->max_pid; i++)
- if ((state->proc_status[i].state == MC_INTERLEAVE)
- || (state->proc_status[i].state == MC_MORE_INTERLEAVE))
- size++;
- return size;
+ return boost::range::count_if(this->actor_states_, [](simgrid::mc::ActorState const& a) { return a.is_todo(); });
}
-int MC_state_process_is_done(mc_state_t state, smx_process_t process)
+Transition State::get_transition() const
{
- return state->proc_status[process->pid].state == MC_DONE ? TRUE : FALSE;
+ return this->transition_;
}
-void MC_state_set_executed_request(mc_state_t state, smx_simcall_t req,
- int value)
+void State::copy_incomplete_comm_pattern()
{
- state->executed_req = *req;
- state->req_num = value;
-
- /* The waitany and testany request are transformed into a wait or test request over the
- * corresponding communication action so it can be treated later by the dependence
- * function. */
- switch (req->call) {
- case SIMCALL_COMM_WAITANY: {
- state->internal_req.call = SIMCALL_COMM_WAIT;
- state->internal_req.issuer = req->issuer;
- smx_synchro_t remote_comm;
- read_element(mc_model_checker->process(),
- &remote_comm, remote(simcall_comm_waitany__get__comms(req)),
- value, sizeof(remote_comm));
- mc_model_checker->process().read(&state->internal_comm, remote(remote_comm));
- simcall_comm_wait__set__comm(&state->internal_req, &state->internal_comm);
- simcall_comm_wait__set__timeout(&state->internal_req, 0);
- break;
- }
-
- case SIMCALL_COMM_TESTANY:
- state->internal_req.call = SIMCALL_COMM_TEST;
- state->internal_req.issuer = req->issuer;
-
- if (value > 0) {
- smx_synchro_t remote_comm;
- read_element(mc_model_checker->process(),
- &remote_comm, remote(simcall_comm_testany__get__comms(req)),
- value, sizeof(remote_comm));
- mc_model_checker->process().read(&state->internal_comm, remote(remote_comm));
- }
-
- simcall_comm_test__set__comm(&state->internal_req, &state->internal_comm);
- simcall_comm_test__set__result(&state->internal_req, value);
- break;
-
- case SIMCALL_COMM_WAIT:
- state->internal_req = *req;
- mc_model_checker->process().read_bytes(&state->internal_comm ,
- sizeof(state->internal_comm), remote(simcall_comm_wait__get__comm(req)));
- simcall_comm_wait__set__comm(&state->executed_req, &state->internal_comm);
- simcall_comm_wait__set__comm(&state->internal_req, &state->internal_comm);
- break;
-
- case SIMCALL_COMM_TEST:
- state->internal_req = *req;
- mc_model_checker->process().read_bytes(&state->internal_comm,
- sizeof(state->internal_comm), remote(simcall_comm_test__get__comm(req)));
- simcall_comm_test__set__comm(&state->executed_req, &state->internal_comm);
- simcall_comm_test__set__comm(&state->internal_req, &state->internal_comm);
- break;
-
- case SIMCALL_MC_RANDOM: {
- state->internal_req = *req;
- int random_max = simcall_mc_random__get__max(req);
- if (value != random_max)
- for (auto& p : mc_model_checker->process().simix_processes()) {
- mc_procstate_t procstate = &state->proc_status[p.copy.pid];
- const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
- if (p.copy.pid == issuer->pid) {
- procstate->state = MC_MORE_INTERLEAVE;
- break;
- }
- }
- break;
- }
-
- default:
- state->internal_req = *req;
- break;
+ incomplete_comm_pattern_.clear();
+ for (unsigned long i = 0; i < mcapi::get().get_maxpid(); i++) {
+ std::vector<simgrid::mc::PatternCommunication> res;
+ for (auto const& comm : incomplete_communications_pattern[i])
+ res.push_back(comm->dup());
+ incomplete_comm_pattern_.push_back(std::move(res));
}
}
-smx_simcall_t MC_state_get_executed_request(mc_state_t state, int *value)
+void State::copy_index_comm_pattern()
{
- *value = state->req_num;
- return &state->executed_req;
+ communication_indices_.clear();
+ for (auto const& list_process_comm : initial_communications_pattern)
+ this->communication_indices_.push_back(list_process_comm.index_comm);
}
-smx_simcall_t MC_state_get_internal_request(mc_state_t state)
-{
- return &state->internal_req;
}
-
-static inline smx_simcall_t MC_state_get_request_for_process(
- mc_state_t state, int*value, smx_process_t process)
-{
- mc_procstate_t procstate = &state->proc_status[process->pid];
-
- if (procstate->state != MC_INTERLEAVE
- && procstate->state != MC_MORE_INTERLEAVE)
- return nullptr;
- if (!simgrid::mc::process_is_enabled(process))
- return nullptr;
-
- switch (process->simcall.call) {
-
- case SIMCALL_COMM_WAITANY:
- *value = -1;
- while (procstate->interleave_count <
- read_length(mc_model_checker->process(),
- remote(simcall_comm_waitany__get__comms(&process->simcall)))) {
- if (simgrid::mc::request_is_enabled_by_idx(&process->simcall,
- procstate->interleave_count++)) {
- *value = procstate->interleave_count - 1;
- break;
- }
- }
-
- if (procstate->interleave_count >=
- simgrid::mc::read_length(mc_model_checker->process(),
- simgrid::mc::remote(simcall_comm_waitany__get__comms(&process->simcall))))
- procstate->state = MC_DONE;
-
- if (*value != -1)
- return &process->simcall;
-
- break;
-
- case SIMCALL_COMM_TESTANY: {
- unsigned start_count = procstate->interleave_count;
- *value = -1;
- while (procstate->interleave_count <
- read_length(mc_model_checker->process(),
- remote(simcall_comm_testany__get__comms(&process->simcall))))
- if (simgrid::mc::request_is_enabled_by_idx(&process->simcall,
- procstate->interleave_count++)) {
- *value = procstate->interleave_count - 1;
- break;
- }
-
- if (procstate->interleave_count >=
- read_length(mc_model_checker->process(),
- remote(simcall_comm_testany__get__comms(&process->simcall))))
- procstate->state = MC_DONE;
-
- if (*value != -1 || start_count == 0)
- return &process->simcall;
-
- break;
- }
-
- case SIMCALL_COMM_WAIT: {
- smx_synchro_t remote_act = simcall_comm_wait__get__comm(&process->simcall);
- s_smx_synchro_t act;
- mc_model_checker->process().read_bytes(
- &act, sizeof(act), remote(remote_act));
- if (act.comm.src_proc && act.comm.dst_proc)
- *value = 0;
- else if (act.comm.src_proc == nullptr && act.comm.type == SIMIX_COMM_READY
- && act.comm.detached == 1)
- *value = 0;
- else
- *value = -1;
- procstate->state = MC_DONE;
- return &process->simcall;
- }
-
- case SIMCALL_MC_RANDOM:
- if (procstate->state == MC_INTERLEAVE)
- *value = simcall_mc_random__get__min(&process->simcall);
- else if (state->req_num < simcall_mc_random__get__max(&process->simcall))
- *value = state->req_num + 1;
- procstate->state = MC_DONE;
- return &process->simcall;
-
- default:
- procstate->state = MC_DONE;
- *value = 0;
- return &process->simcall;
- }
- return nullptr;
-}
-
-smx_simcall_t MC_state_get_request(mc_state_t state, int *value)
-{
- for (auto& p : mc_model_checker->process().simix_processes()) {
- smx_simcall_t res = MC_state_get_request_for_process(state, value, &p.copy);
- if (res)
- return res;
- }
- return nullptr;
-}
-
}
