X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0f5e8daaa6e9f74521068aa75837200bcd182ea6..f816b895e4b1219c3dcd0443a55ef90690a849ef:/src/mc/mc_global.c diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c index 9cd6c7f6db..c0b7acddda 100644 --- a/src/mc/mc_global.c +++ b/src/mc/mc_global.c @@ -1,28 +1,60 @@ +/* Copyright (c) 2008-2012 Da 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 +#include +#include +#include + #include "../surf/surf_private.h" -#include "../simix/private.h" +#include "../simix/smx_private.h" #include "xbt/fifo.h" -#include "private.h" +#include "mc_private.h" +XBT_LOG_NEW_CATEGORY(mc, "All MC categories"); XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc, "Logging specific to MC (global)"); /* MC global data structures */ -mc_snapshot_t initial_snapshot = NULL; -xbt_fifo_t mc_stack = NULL; -xbt_setset_t mc_setset = NULL; -mc_stats_t mc_stats = NULL; + mc_state_t mc_current_state = NULL; char mc_replay_mode = FALSE; +double *mc_time = NULL; +mc_snapshot_t initial_snapshot = NULL; + +/* Safety */ + +xbt_fifo_t mc_stack_safety_stateful = NULL; +xbt_fifo_t mc_stack_safety_stateless = NULL; +mc_stats_t mc_stats = NULL; + +/* Liveness */ + +mc_stats_pair_t mc_stats_pair = NULL; +xbt_fifo_t mc_stack_liveness = NULL; +mc_snapshot_t initial_snapshot_liveness = NULL; + +xbt_automaton_t automaton; +char *prog_name; + +static void MC_init_liveness(xbt_automaton_t a, char *prgm); +static void MC_assert_pair(int prop); + /** * \brief Initialize the model-checker data structures */ -void MC_init(int method) +void MC_init_safety_stateless(void) { + /* Check if MC is already initialized */ if (initial_snapshot) return; + mc_time = xbt_new0(double, simix_process_maxpid); + /* Initialize the data structures that must be persistent across every iteration of the model-checker (in RAW memory) */ MC_SET_RAW_MEM; @@ -32,79 +64,153 @@ void MC_init(int method) mc_stats->state_size = 1; /* Create exploration stack */ - mc_stack = xbt_fifo_new(); - - /* Create the container for the sets */ - mc_setset = xbt_setset_new(20); - - switch (method) { - case 0: - MC_dfs_init(); - break; - case 1: - MC_dpor_init(); - break; - default: - break; - } + mc_stack_safety_stateless = xbt_fifo_new(); + + MC_UNSET_RAW_MEM; + + MC_dpor_init(); - /* Save the initial state */ MC_SET_RAW_MEM; - initial_snapshot = xbt_new(s_mc_snapshot_t, 1); + /* Save the initial state */ + initial_snapshot = xbt_new0(s_mc_snapshot_t, 1); MC_take_snapshot(initial_snapshot); MC_UNSET_RAW_MEM; } -void MC_modelcheck(int method) -{ +void MC_init_safety_stateful(void){ + + + /* Check if MC is already initialized */ + if (initial_snapshot) + return; + + mc_time = xbt_new0(double, simix_process_maxpid); + + /* Initialize the data structures that must be persistent across every + iteration of the model-checker (in RAW memory) */ + MC_SET_RAW_MEM; + + /* Initialize statistics */ + mc_stats = xbt_new0(s_mc_stats_t, 1); + mc_stats->state_size = 1; + + /* Create exploration stack */ + mc_stack_safety_stateful = xbt_fifo_new(); + + MC_UNSET_RAW_MEM; + + MC_dpor_stateful_init(); - MC_init(method); - - switch (method) { - case 0: - MC_dfs(); - break; - case 1: - MC_dpor(); - break; - default: - break; - } - MC_exit(method); } -void MC_exit(int method) -{ - mc_state_t state; +static void MC_init_liveness(xbt_automaton_t a, char *prgm){ - switch (method) { - case 0: - //MC_dfs_exit(); - break; - case 1: - //MC_dpor_exit(); - break; - default: - break; - } + XBT_DEBUG("Start init mc"); + + mc_time = xbt_new0(double, simix_process_maxpid); + + /* Initialize the data structures that must be persistent across every + iteration of the model-checker (in RAW memory) */ - /* Destroy MC data structures (in RAW memory) */ MC_SET_RAW_MEM; - xbt_free(mc_stats); - while ((state = (mc_state_t) xbt_fifo_pop(mc_stack)) != NULL) - MC_state_delete(state); + /* Initialize statistics */ + mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1); + + XBT_DEBUG("Creating stack"); + + /* Create exploration stack */ + mc_stack_liveness = xbt_fifo_new(); - xbt_fifo_free(mc_stack); - xbt_setset_destroy(mc_setset); MC_UNSET_RAW_MEM; + + automaton = a; + prog_name = strdup(prgm); + + MC_ddfs_init(); + + +} + + +void MC_modelcheck(void) +{ + MC_init_safety_stateless(); + MC_dpor(); + MC_exit(); +} + +void MC_modelcheck_stateful(void) +{ + MC_init_safety_stateful(); + MC_dpor_stateful(); + MC_exit(); +} + + +void MC_modelcheck_liveness(xbt_automaton_t a, char *prgm){ + MC_init_liveness(a, prgm); + MC_exit_liveness(); +} + +void MC_exit_liveness(void) +{ + MC_print_statistics_pairs(mc_stats_pair); + //xbt_free(mc_time); + //MC_memory_exit(); + exit(0); +} + + +void MC_exit(void) +{ + MC_print_statistics(mc_stats); + xbt_free(mc_time); + MC_memory_exit(); } + int MC_random(int min, int max) { - MC_trans_intercept_random(min, max); - return mc_current_state->executed_transition->random.value; + /*FIXME: return mc_current_state->executed_transition->random.value;*/ + return 0; +} + +/** + * \brief Schedules all the process that are ready to run + */ +void MC_wait_for_requests(void) +{ + smx_process_t process; + smx_simcall_t req; + unsigned int iter; + + while (!xbt_dynar_is_empty(simix_global->process_to_run)) { + SIMIX_process_runall(); + xbt_dynar_foreach(simix_global->process_that_ran, iter, process) { + req = &process->simcall; + if (req->call != SIMCALL_NONE && !MC_request_is_visible(req)) + SIMIX_simcall_pre(req, 0); + } + } +} + +int MC_deadlock_check() +{ + int deadlock = FALSE; + smx_process_t process; + if(xbt_swag_size(simix_global->process_list)){ + deadlock = TRUE; + xbt_swag_foreach(process, simix_global->process_list){ + if(process->simcall.call != SIMCALL_NONE + && MC_request_is_enabled(&process->simcall)){ + deadlock = FALSE; + break; + } + } + } + return deadlock; } /** @@ -114,16 +220,18 @@ int MC_random(int min, int max) */ void MC_replay(xbt_fifo_t stack) { + int value; + char *req_str; + smx_simcall_t req = NULL, saved_req = NULL; xbt_fifo_item_t item; - mc_transition_t trans; + mc_state_t state; - DEBUG0("**** Begin Replay ****"); + XBT_DEBUG("**** Begin Replay ****"); /* Restore the initial state */ MC_restore_snapshot(initial_snapshot); - - mc_replay_mode = TRUE; - + /* At the moment of taking the snapshot the raw heap was set, so restoring + * it will set it back again, we have to unset it to continue */ MC_UNSET_RAW_MEM; /* Traverse the stack from the initial state and re-execute the transitions */ @@ -131,36 +239,146 @@ void MC_replay(xbt_fifo_t stack) item != xbt_fifo_get_first_item(stack); item = xbt_fifo_get_prev_item(item)) { - mc_current_state = (mc_state_t) xbt_fifo_get_item_content(item); - trans = mc_current_state->executed_transition; - + state = (mc_state_t) xbt_fifo_get_item_content(item); + saved_req = MC_state_get_executed_request(state, &value); + + if(saved_req){ + /* because we got a copy of the executed request, we have to fetch the + real one, pointed by the request field of the issuer process */ + req = &saved_req->issuer->simcall; + + /* Debug information */ + if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ + req_str = MC_request_to_string(req, value); + XBT_DEBUG("Replay: %s (%p)", req_str, state); + xbt_free(req_str); + } + } + + SIMIX_simcall_pre(req, value); + MC_wait_for_requests(); + /* Update statistics */ mc_stats->visited_states++; mc_stats->executed_transitions++; + } + XBT_DEBUG("**** End Replay ****"); +} - DEBUG1("Executing transition %s", trans->name); - SIMIX_process_schedule(trans->process); +void MC_replay_liveness(xbt_fifo_t stack, int all_stack) +{ + int value; + char *req_str; + smx_simcall_t req = NULL, saved_req = NULL; + xbt_fifo_item_t item; + mc_state_t state; + mc_pair_stateless_t pair; + int depth = 1; - /* Do all surf's related black magic tricks to keep all working */ - MC_execute_surf_actions(); + XBT_DEBUG("**** Begin Replay ****"); - /* Schedule every process that got enabled due to the executed transition */ - MC_schedule_enabled_processes(); - } - mc_replay_mode = FALSE; - DEBUG0("**** End Replay ****"); + /* Restore the initial state */ + MC_restore_snapshot(initial_snapshot_liveness); + /* At the moment of taking the snapshot the raw heap was set, so restoring + * it will set it back again, we have to unset it to continue */ + MC_UNSET_RAW_MEM; + + if(all_stack){ + + item = xbt_fifo_get_last_item(stack); + + while(depth <= xbt_fifo_size(stack)){ + + pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item); + state = (mc_state_t) pair->graph_state; + + if(pair->requests > 0){ + + saved_req = MC_state_get_executed_request(state, &value); + //XBT_DEBUG("SavedReq->call %u", saved_req->call); + + if(saved_req != NULL){ + /* because we got a copy of the executed request, we have to fetch the + real one, pointed by the request field of the issuer process */ + req = &saved_req->issuer->simcall; + //XBT_DEBUG("Req->call %u", req->call); + + /* Debug information */ + if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ + req_str = MC_request_to_string(req, value); + XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state); + xbt_free(req_str); + } + + } + + SIMIX_simcall_pre(req, value); + MC_wait_for_requests(); + } + + depth++; + + /* Update statistics */ + mc_stats_pair->visited_pairs++; + + item = xbt_fifo_get_prev_item(item); + } + + }else{ + + /* Traverse the stack from the initial state and re-execute the transitions */ + for (item = xbt_fifo_get_last_item(stack); + item != xbt_fifo_get_first_item(stack); + item = xbt_fifo_get_prev_item(item)) { + + pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item); + state = (mc_state_t) pair->graph_state; + + if(pair->requests > 0){ + + saved_req = MC_state_get_executed_request(state, &value); + //XBT_DEBUG("SavedReq->call %u", saved_req->call); + + if(saved_req != NULL){ + /* because we got a copy of the executed request, we have to fetch the + real one, pointed by the request field of the issuer process */ + req = &saved_req->issuer->simcall; + //XBT_DEBUG("Req->call %u", req->call); + + /* Debug information */ + if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ + req_str = MC_request_to_string(req, value); + XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state); + xbt_free(req_str); + } + + } + + SIMIX_simcall_pre(req, value); + MC_wait_for_requests(); + } + + depth++; + + /* Update statistics */ + mc_stats_pair->visited_pairs++; + } + } + + XBT_DEBUG("**** End Replay ****"); } + /** * \brief Dumps the contents of a model-checker's stack and shows the actual * execution trace * \param stack The stack to dump */ -void MC_dump_stack(xbt_fifo_t stack) +void MC_dump_stack_safety_stateless(xbt_fifo_t stack) { mc_state_t state; - MC_show_stack(stack); + MC_show_stack_safety_stateless(stack); MC_SET_RAW_MEM; while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) @@ -168,153 +386,231 @@ void MC_dump_stack(xbt_fifo_t stack) MC_UNSET_RAW_MEM; } -void MC_show_stack(xbt_fifo_t stack) + +void MC_show_stack_safety_stateless(xbt_fifo_t stack) { + int value; mc_state_t state; - mc_transition_t trans; xbt_fifo_item_t item; - + smx_simcall_t req; + char *req_str = NULL; + for (item = xbt_fifo_get_last_item(stack); (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item))) : (NULL)); item = xbt_fifo_get_prev_item(item)) { - trans = state->executed_transition; - if (trans) { - INFO1("%s", trans->name); + req = MC_state_get_executed_request(state, &value); + if(req){ + req_str = MC_request_to_string(req, value); + XBT_INFO("%s", req_str); + xbt_free(req_str); } } } -/** - * \brief Schedules all the process that are ready to run - * As a side effect it performs some clean-up required by SIMIX - */ -void MC_schedule_enabled_processes(void) +void MC_show_deadlock(smx_simcall_t req) { - smx_process_t process; - - //SIMIX_process_empty_trash(); - - /* Schedule every process that is ready to run due to an finished action */ - while ((process = xbt_swag_extract(simix_global->process_to_run))) { - DEBUG2("Scheduling %s on %s", process->name, process->smx_host->name); - SIMIX_process_schedule(process); - } + /*char *req_str = NULL;*/ + XBT_INFO("**************************"); + XBT_INFO("*** DEAD-LOCK DETECTED ***"); + XBT_INFO("**************************"); + XBT_INFO("Locked request:"); + /*req_str = MC_request_to_string(req); + XBT_INFO("%s", req_str); + xbt_free(req_str);*/ + XBT_INFO("Counter-example execution trace:"); + MC_dump_stack_safety_stateless(mc_stack_safety_stateless); } -/******************************** States **************************************/ - -/** - * \brief Creates a state data structure used by the exploration algorithm - */ -mc_state_t MC_state_new(void) +void MC_show_deadlock_stateful(smx_simcall_t req) { - mc_state_t state = NULL; + /*char *req_str = NULL;*/ + XBT_INFO("**************************"); + XBT_INFO("*** DEAD-LOCK DETECTED ***"); + XBT_INFO("**************************"); + XBT_INFO("Locked request:"); + /*req_str = MC_request_to_string(req); + XBT_INFO("%s", req_str); + xbt_free(req_str);*/ + XBT_INFO("Counter-example execution trace:"); + MC_show_stack_safety_stateful(mc_stack_safety_stateful); +} - state = xbt_new0(s_mc_state_t, 1); - state->created_transitions = xbt_setset_new_set(mc_setset); - state->transitions = xbt_setset_new_set(mc_setset); - state->enabled_transitions = xbt_setset_new_set(mc_setset); - state->interleave = xbt_setset_new_set(mc_setset); - state->done = xbt_setset_new_set(mc_setset); - state->executed_transition = NULL; +void MC_dump_stack_safety_stateful(xbt_fifo_t stack) +{ + //mc_state_ws_t state; - mc_stats->expanded_states++; + MC_show_stack_safety_stateful(stack); - return state; + /*MC_SET_RAW_MEM; + while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) + MC_state_delete(state); + MC_UNSET_RAW_MEM;*/ } -/** - * \brief Deletes a state data structure - * \param trans The state to be deleted - */ -void MC_state_delete(mc_state_t state) -{ - xbt_setset_cursor_t cursor; - mc_transition_t trans; - xbt_setset_foreach(state->created_transitions, cursor, trans) { - xbt_setset_elm_remove(mc_setset, trans); - MC_transition_delete(trans); +void MC_show_stack_safety_stateful(xbt_fifo_t stack) +{ + int value; + mc_state_ws_t state; + xbt_fifo_item_t item; + smx_simcall_t req; + char *req_str = NULL; + + for (item = xbt_fifo_get_last_item(stack); + (item ? (state = (mc_state_ws_t) (xbt_fifo_get_item_content(item))) + : (NULL)); item = xbt_fifo_get_prev_item(item)) { + req = MC_state_get_executed_request(state->graph_state, &value); + if(req){ + req_str = MC_request_to_string(req, value); + XBT_INFO("%s", req_str); + xbt_free(req_str); + } } - - xbt_setset_destroy_set(state->created_transitions); - xbt_setset_destroy_set(state->transitions); - xbt_setset_destroy_set(state->enabled_transitions); - xbt_setset_destroy_set(state->interleave); - xbt_setset_destroy_set(state->done); - - xbt_free(state); } -/************************** SURF Emulation ************************************/ - -/* Dirty hack, we manipulate surf's clock to simplify the integration of the - model-checker */ -extern double NOW; -/** - * \brief Executes all the actions at every model - */ -void MC_execute_surf_actions(void) -{ - unsigned int iter; - surf_action_t action = NULL; - surf_model_t model = NULL; - smx_action_t smx_action = NULL; - - /* Execute all the actions in every model */ - xbt_dynar_foreach(model_list, iter, model) { - while ((action = xbt_swag_extract(model->states.running_action_set))) { - /* FIXME: timeouts are not calculated correctly */ - if (NOW >= action->max_duration) { - surf_action_state_set(action, SURF_ACTION_DONE); - smx_action = action->data; - DEBUG5 - ("Resource [%s] (%d): Executing RUNNING action \"%s\" (%p) MaxDuration %lf", - model->name, xbt_swag_size(model->states.running_action_set), - smx_action->name, smx_action, action->max_duration); - - if (smx_action) - SIMIX_action_signal_all(smx_action); +void MC_show_stack_liveness(xbt_fifo_t stack){ + int value; + mc_pair_stateless_t pair; + xbt_fifo_item_t item; + smx_simcall_t req; + char *req_str = NULL; + + for (item = xbt_fifo_get_last_item(stack); + (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item))) + : (NULL)); item = xbt_fifo_get_prev_item(item)) { + req = MC_state_get_executed_request(pair->graph_state, &value); + if(req){ + if(pair->requests>0){ + req_str = MC_request_to_string(req, value); + XBT_INFO("%s", req_str); + xbt_free(req_str); + }else{ + XBT_INFO("End of system requests but evolution in Büchi automaton"); } } - /*FIXME: check if this is always empty or not */ - while ((action = xbt_swag_extract(model->states.failed_action_set))) { - smx_action = action->data; - DEBUG4("Resource [%s] (%d): Executing FAILED action \"%s\" (%p)", - model->name, xbt_swag_size(model->states.running_action_set), - smx_action->name, smx_action); - if (smx_action) - SIMIX_action_signal_all(smx_action); - } } - /* That's it, now go one step deeper into the model-checking process! */ - NOW += 0.5; /* FIXME: Check time increases */ } -/****************************** Statistics ************************************/ +void MC_dump_stack_liveness(xbt_fifo_t stack){ + mc_pair_stateless_t pair; + + MC_SET_RAW_MEM; + while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL) + MC_pair_stateless_delete(pair); + MC_UNSET_RAW_MEM; +} + + void MC_print_statistics(mc_stats_t stats) { - INFO1("State space size ~= %lu", stats->state_size); - INFO1("Expanded states = %lu", stats->expanded_states); - INFO1("Visited states = %lu", stats->visited_states); - INFO1("Executed transitions = %lu", stats->executed_transitions); - INFO1("Expanded / Visited = %lf", + //XBT_INFO("State space size ~= %lu", stats->state_size); + XBT_INFO("Expanded states = %lu", stats->expanded_states); + XBT_INFO("Visited states = %lu", stats->visited_states); + XBT_INFO("Executed transitions = %lu", stats->executed_transitions); + XBT_INFO("Expanded / Visited = %lf", (double) stats->visited_states / stats->expanded_states); - /*INFO1("Exploration coverage = %lf", + /*XBT_INFO("Exploration coverage = %lf", + (double)stats->expanded_states / stats->state_size); */ +} + +void MC_print_statistics_pairs(mc_stats_pair_t stats) +{ + XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs); + XBT_INFO("Visited pairs = %lu", stats->visited_pairs); + //XBT_INFO("Executed transitions = %lu", stats->executed_transitions); + XBT_INFO("Expanded / Visited = %lf", + (double) stats->visited_pairs / stats->expanded_pairs); + /*XBT_INFO("Exploration coverage = %lf", (double)stats->expanded_states / stats->state_size); */ } -/************************* Assertion Checking *********************************/ void MC_assert(int prop) { - if (!prop) { - INFO0("**************************"); - INFO0("*** PROPERTY NOT VALID ***"); - INFO0("**************************"); - INFO0("Counter-example execution trace:"); - MC_dump_stack(mc_stack); + if (MC_IS_ENABLED ){ + if(!prop) { + XBT_INFO("**************************"); + XBT_INFO("*** PROPERTY NOT VALID ***"); + XBT_INFO("**************************"); + XBT_INFO("Counter-example execution trace:"); + MC_dump_stack_safety_stateless(mc_stack_safety_stateless); + MC_print_statistics(mc_stats); + xbt_abort(); + }else{ + MC_print_statistics(mc_stats); + xbt_abort(); + } + } +} + +void MC_assert_stateful(int prop) +{ + if (MC_IS_ENABLED && !prop) { + XBT_INFO("**************************"); + XBT_INFO("*** PROPERTY NOT VALID ***"); + XBT_INFO("**************************"); + XBT_INFO("Counter-example execution trace:"); + MC_dump_stack_safety_stateful(mc_stack_safety_stateful); MC_print_statistics(mc_stats); xbt_abort(); } } + + +static void MC_assert_pair(int prop){ + if (MC_IS_ENABLED && !prop) { + XBT_INFO("**************************"); + XBT_INFO("*** PROPERTY NOT VALID ***"); + XBT_INFO("**************************"); + //XBT_INFO("Counter-example execution trace:"); + MC_show_stack_liveness(mc_stack_liveness); + //MC_dump_snapshot_stack(mc_snapshot_stack); + MC_print_statistics_pairs(mc_stats_pair); + xbt_abort(); + } +} + +void MC_process_clock_add(smx_process_t process, double amount) +{ + mc_time[process->pid] += amount; +} + +double MC_process_clock_get(smx_process_t process) +{ + if(mc_time) + return mc_time[process->pid]; + else + return 0; +} + +void MC_diff(void){ + + mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1); + MC_take_snapshot_liveness(sn); + + int i; + + XBT_INFO("Number of regions : %u", sn->num_reg); + + for(i=0; inum_reg; i++){ + + switch(sn->regions[i]->type){ + case 0: /* heap */ + XBT_INFO("Size of heap : %zu", sn->regions[i]->size); + mmalloc_display_info_heap(sn->regions[i]->data); + break; + case 1 : /* libsimgrid */ + XBT_INFO("Size of libsimgrid : %zu", sn->regions[i]->size); + break; + case 2 : /* data program */ + XBT_INFO("Size of data program : %zu", sn->regions[i]->size); + break; + case 3 : /* stack */ + XBT_INFO("Size of stack : %zu", sn->regions[i]->size); + XBT_INFO("Start addr of stack : %p", sn->regions[i]->start_addr); + break; + } + + } + +}