X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/20d5d4cbcb5580189461745935712009a7afbce5..708989f9970b6f37f3ca7c7b568bcbfeaa53867f:/src/mc/mc_global.c diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c index c29198cf41..d24b438235 100644 --- a/src/mc/mc_global.c +++ b/src/mc/mc_global.c @@ -1,35 +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_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(void) +void MC_init_safety_stateless(void) { - smx_process_t process; - + /* 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; @@ -39,101 +64,155 @@ void MC_init(void) mc_stats->state_size = 1; /* Create exploration stack */ - mc_stack = xbt_fifo_new(); + mc_stack_safety_stateless = xbt_fifo_new(); - /* Create the container for the sets */ - mc_setset = xbt_setset_new(20); - - /* Add the existing processes to mc's setset so they have an ID designated */ - xbt_swag_foreach(process, simix_global->process_list){ - xbt_setset_elm_add(mc_setset, process); - } - - /* Initialize the control variable */ - mc_exp_ctl = xbt_new0(e_mc_exp_ctl_t, 1); - *mc_exp_ctl = MC_EXPLORE; - MC_UNSET_RAW_MEM; - + MC_dpor_init(); + MC_SET_RAW_MEM; /* Save the initial state */ -/* MC_SET_RAW_MEM; initial_snapshot = xbt_new0(s_mc_snapshot_t, 1); MC_take_snapshot(initial_snapshot); - MC_UNSET_RAW_MEM;*/ + MC_UNSET_RAW_MEM; } -void MC_modelcheck(void) -{ - int status; - pid_t pid; +void MC_init_safety_stateful(void){ - /* Compute initial state */ - MC_init(); - /* Fork an mc's slave exploration process and wait for it. */ - /* The forked process will explore a trace until: - - a back-tracking point is found (it sets mc_expl_ctl to MC_explore) - - there are no more states to explore (it sets mc_expl_ctl to MC_STOP) - - a property is invalid (or dead-lock) - */ - while(*mc_exp_ctl == MC_EXPLORE){ - if((pid = fork())){ - waitpid(pid, &status, 0); - mmalloc_detach(raw_heap); - raw_heap = mmalloc_attach(raw_heap_fd, (char*)(std_heap) + STD_HEAP_SIZE + getpagesize()); - - if (WIFSIGNALED(status)) { - INFO1("killed by signal %d\n", WTERMSIG(status)); - break; - }else if (WIFSTOPPED(status)) { - INFO1("stopped by signal %d\n", WSTOPSIG(status)); - break; - }else if (WIFCONTINUED(status)) { - INFO0("continued\n"); - break; - } - - if(*mc_exp_ctl == MC_DEADLOCK){ - INFO0("**************************"); - INFO0("*** DEAD-LOCK DETECTED ***"); - INFO0("**************************"); - MC_dump_stack(mc_stack); - MC_print_statistics(mc_stats); - break; - } - - }else{ - /* if mc_stack is empty then create first state, otherwise replay */ - if(xbt_fifo_size(mc_stack) == 0) - MC_dpor_init(); - else - MC_replay(mc_stack); - - MC_dpor(); - MC_memory_exit(); - break; - } - } + /* 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(); + + +} + +static void MC_init_liveness(xbt_automaton_t a, char *prgm){ + + XBT_DEBUG("Start init mc"); - /* If we are the mc's master process then exit */ - if(pid) - MC_exit(); + 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_pair = xbt_new0(s_mc_stats_pair_t, 1); + + XBT_DEBUG("Creating stack"); + + /* Create exploration stack */ + mc_stack_liveness = xbt_fifo_new(); + + 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) { - mmalloc_detach(raw_heap); - shm_unlink("raw_heap"); + MC_print_statistics(mc_stats); + xbt_free(mc_time); + MC_memory_exit(); } + int MC_random(int min, int max) { /*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; +} + /** * \brief Re-executes from the initial state all the transitions indicated by * a given model-checker stack. @@ -141,17 +220,19 @@ int MC_random(int min, int max) */ void MC_replay(xbt_fifo_t stack) { + int value; char *req_str; - smx_req_t req = NULL, saved_req = NULL; + smx_simcall_t req = NULL, saved_req = NULL; xbt_fifo_item_t item; mc_state_t state; - DEBUG0("**** Begin Replay ****"); + XBT_DEBUG("**** Begin Replay ****"); /* Restore the initial state */ - /*MC_restore_snapshot(initial_snapshot);*/ - - MC_wait_for_requests(); + MC_restore_snapshot(initial_snapshot); + /* 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 */ for (item = xbt_fifo_get_last_item(stack); @@ -159,41 +240,145 @@ void MC_replay(xbt_fifo_t stack) item = xbt_fifo_get_prev_item(item)) { state = (mc_state_t) xbt_fifo_get_item_content(item); - saved_req = MC_state_get_executed_request(state); + 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->request; + req = &saved_req->issuer->simcall; /* Debug information */ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ - req_str = MC_request_to_string(req); - DEBUG1("Replay: %s", req_str); + req_str = MC_request_to_string(req, value); + XBT_DEBUG("Replay: %s (%p)", req_str, state); xbt_free(req_str); } } - SIMIX_request_pre(req); + SIMIX_simcall_pre(req, value); MC_wait_for_requests(); /* Update statistics */ mc_stats->visited_states++; mc_stats->executed_transitions++; } - DEBUG0("**** End Replay ****"); + XBT_DEBUG("**** End Replay ****"); +} + +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; + + XBT_DEBUG("**** Begin 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) @@ -201,86 +386,226 @@ 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; xbt_fifo_item_t item; - smx_req_t req; + 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)) { - req = MC_state_get_executed_request(state); + req = MC_state_get_executed_request(state, &value); if(req){ - req_str = MC_request_to_string(req); - INFO1("%s", req_str); + 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 - */ -void MC_wait_for_requests(void) +void MC_show_deadlock(smx_simcall_t req) { + /*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); +} + +void MC_show_deadlock_stateful(smx_simcall_t req) +{ + /*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); +} + +void MC_dump_stack_safety_stateful(xbt_fifo_t stack) +{ + //mc_state_ws_t state; + + MC_show_stack_safety_stateful(stack); + + /*MC_SET_RAW_MEM; + while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) + MC_state_delete(state); + MC_UNSET_RAW_MEM;*/ +} + + +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; - smx_req_t req = NULL; - - do { - SIMIX_context_runall(simix_global->process_to_run); - while((req = SIMIX_request_pop())){ - if(!SIMIX_request_is_visible(req)) - SIMIX_request_pre(req); - else if(req->call == REQ_COMM_WAITANY) - THROW_UNIMPLEMENTED; - else if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){ - req_str = MC_request_to_string(req); - DEBUG1("Got: %s", req_str); - xbt_free(req_str); + + 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); + } + } +} + + +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"); } } - } while (xbt_swag_size(simix_global->process_to_run)); + } } -/****************************** 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 (_surf_do_model_check && !prop) { - INFO0("**************************"); - INFO0("*** PROPERTY NOT VALID ***"); - INFO0("**************************"); - INFO0("Counter-example execution trace:"); - MC_dump_stack(mc_stack); + if (MC_IS_ENABLED && !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(); } } -void MC_show_deadlock(smx_req_t req) +void MC_assert_stateful(int prop) { - char *req_str = NULL; - INFO0("**************************"); - INFO0("*** DEAD-LOCK DETECTED ***"); - INFO0("**************************"); - INFO0("Locked request:"); - req_str = MC_request_to_string(req); - INFO1("%s", req_str); - xbt_free(req_str); - INFO0("Counter-example execution trace:"); - MC_dump_stack(mc_stack); + 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 : %d", 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; + } + + } + }