X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c73aeef05e1a3702e23296f6ff6690d6d408543b..ea6f6b66934613235f03c2a768cb84cba48db423:/src/mc/mc_global.c diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c index d30d69f63a..4ae023d8dd 100644 --- a/src/mc/mc_global.c +++ b/src/mc/mc_global.c @@ -1,4 +1,5 @@ -/* Copyright (c) 2008-2013 Da SimGrid Team. All rights reserved. */ +/* Copyright (c) 2008-2013. 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. */ @@ -32,9 +33,10 @@ int _sg_mc_max_depth=1000; int _sg_mc_visited=0; char *_sg_mc_dot_output_file = NULL; -extern int _sg_init_status; +int user_max_depth_reached = 0; + void _mc_cfg_cb_reduce(const char *name, int pos) { - if (_sg_init_status && !_sg_do_model_check) { + if (_sg_cfg_init_status && !_sg_do_model_check) { xbt_die("You are specifying a reduction strategy after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); } char *val= xbt_cfg_get_string(_sg_cfg_set, name); @@ -48,70 +50,72 @@ void _mc_cfg_cb_reduce(const char *name, int pos) { } void _mc_cfg_cb_checkpoint(const char *name, int pos) { - if (_sg_init_status && !_sg_do_model_check) { + if (_sg_cfg_init_status && !_sg_do_model_check) { xbt_die("You are specifying a checkpointing value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); } - _sg_mc_checkpoint = xbt_cfg_get_boolean(_sg_cfg_set, name); + _sg_mc_checkpoint = xbt_cfg_get_int(_sg_cfg_set, name); } void _mc_cfg_cb_property(const char *name, int pos) { - if (_sg_init_status && !_sg_do_model_check) { + if (_sg_cfg_init_status && !_sg_do_model_check) { xbt_die("You are specifying a property after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); } _sg_mc_property_file= xbt_cfg_get_string(_sg_cfg_set, name); } void _mc_cfg_cb_timeout(const char *name, int pos) { - if (_sg_init_status && !_sg_do_model_check) { + if (_sg_cfg_init_status && !_sg_do_model_check) { xbt_die("You are specifying a value to enable/disable timeout for wait requests after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); } _sg_mc_timeout= xbt_cfg_get_boolean(_sg_cfg_set, name); } void _mc_cfg_cb_max_depth(const char *name, int pos) { - if (_sg_init_status && !_sg_do_model_check) { + if (_sg_cfg_init_status && !_sg_do_model_check) { xbt_die("You are specifying a max depth value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); } _sg_mc_max_depth= xbt_cfg_get_int(_sg_cfg_set, name); } void _mc_cfg_cb_visited(const char *name, int pos) { - if (_sg_init_status && !_sg_do_model_check) { + if (_sg_cfg_init_status && !_sg_do_model_check) { xbt_die("You are specifying a number of stored visited states after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); } _sg_mc_visited= xbt_cfg_get_int(_sg_cfg_set, name); } void _mc_cfg_cb_dot_output(const char *name, int pos) { - if (_sg_init_status && !_sg_do_model_check) { + if (_sg_cfg_init_status && !_sg_do_model_check) { xbt_die("You are specifying a file name for a dot output of graph state after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry."); } _sg_mc_dot_output_file= xbt_cfg_get_string(_sg_cfg_set, name); } /* MC global data structures */ - mc_state_t mc_current_state = NULL; char mc_replay_mode = FALSE; double *mc_time = NULL; -mc_comparison_times_t mc_comp_times = NULL; -double mc_snapshot_comparison_time; +__thread mc_comparison_times_t mc_comp_times = NULL; +__thread double mc_snapshot_comparison_time; mc_stats_t mc_stats = NULL; /* Safety */ - xbt_fifo_t mc_stack_safety = NULL; mc_global_t initial_state_safety = NULL; /* Liveness */ - xbt_fifo_t mc_stack_liveness = NULL; mc_global_t initial_state_liveness = NULL; int compare; -/* Local */ -xbt_dict_t mc_local_variables = NULL; -/* Global */ -xbt_dynar_t mc_global_variables = NULL; +xbt_automaton_t _mc_property_automaton = NULL; + +/* Variables */ +xbt_dict_t mc_local_variables_libsimgrid = NULL; +xbt_dict_t mc_local_variables_binary = NULL; +xbt_dynar_t mc_global_variables_libsimgrid = NULL; +xbt_dynar_t mc_global_variables_binary = NULL; +xbt_dict_t mc_variables_type_libsimgrid = NULL; +xbt_dict_t mc_variables_type_binary = NULL; /* Ignore mechanism */ xbt_dynar_t mc_stack_comparison_ignore; @@ -119,779 +123,1210 @@ xbt_dynar_t mc_data_bss_comparison_ignore; extern xbt_dynar_t mc_heap_comparison_ignore; extern xbt_dynar_t stacks_areas; +/* Dot output */ FILE *dot_output = NULL; -const char* colors[10]; - -xbt_automaton_t _mc_property_automaton = NULL; +const char* colors[13]; -/* Static functions */ -static void MC_assert_pair(int prop); -static dw_location_t get_location(xbt_dict_t location_list, char *expr); -static dw_frame_t get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset); -static size_t data_bss_ignore_size(void *address); -static void MC_get_global_variables(char *elf_file); +/******************************* DWARF Information *******************************/ +/**********************************************************************************/ -void MC_do_the_modelcheck_for_real() { +/************************** Free functions *************************/ - MC_SET_RAW_MEM; - mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1); - MC_UNSET_RAW_MEM; +static void dw_location_free(dw_location_t l){ + if(l){ + if(l->type == e_dw_loclist) + xbt_dynar_free(&(l->location.loclist)); + else if(l->type == e_dw_compose) + xbt_dynar_free(&(l->location.compose)); + else if(l->type == e_dw_arithmetic) + xbt_free(l->location.arithmetic); - if (!_sg_mc_property_file || _sg_mc_property_file[0]=='\0') { - if (mc_reduce_kind==e_mc_reduce_unset) - mc_reduce_kind=e_mc_reduce_dpor; + xbt_free(l); + } +} - XBT_INFO("Check a safety property"); - MC_modelcheck_safety(); +static void dw_location_entry_free(dw_location_entry_t e){ + dw_location_free(e->location); + xbt_free(e); +} - } else { +static void dw_type_free(dw_type_t t){ + xbt_free(t->name); + xbt_free(t->dw_type_id); + xbt_dynar_free(&(t->members)); + xbt_free(t); +} - if (mc_reduce_kind==e_mc_reduce_unset) - mc_reduce_kind=e_mc_reduce_none; +static void dw_type_free_voidp(void *t){ + dw_type_free((dw_type_t) * (void **) t); +} - XBT_INFO("Check the liveness property %s",_sg_mc_property_file); - MC_automaton_load(_sg_mc_property_file); - MC_modelcheck_liveness(); +static void dw_variable_free(dw_variable_t v){ + if(v){ + xbt_free(v->name); + xbt_free(v->type_origin); + if(!v->global) + dw_location_free(v->address.location); + xbt_free(v); } } - -void MC_compare(void){ - compare = 1; +static void dw_variable_free_voidp(void *t){ + dw_variable_free((dw_variable_t) * (void **) t); } -void MC_init(){ +/*************************************************************************/ - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - - compare = 0; +static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr){ - /* Initialize the data structures that must be persistent across every - iteration of the model-checker (in RAW memory) */ + dw_location_t loc = xbt_new0(s_dw_location_t, 1); - MC_SET_RAW_MEM; + if(location_list != NULL){ + + char *key = bprintf("%d", (int)strtoul(expr, NULL, 16)); + loc->type = e_dw_loclist; + loc->location.loclist = (xbt_dynar_t)xbt_dict_get_or_null(location_list, key); + if(loc->location.loclist == NULL) + XBT_INFO("Key not found in loclist"); + xbt_free(key); + return loc; - MC_init_memory_map_info(); - - mc_local_variables = xbt_dict_new_homogeneous(NULL); + }else{ - /* Get local variables in binary for state equality detection */ - xbt_dict_t binary_location_list = MC_get_location_list(xbt_binary_name); - MC_get_local_variables(xbt_binary_name, binary_location_list, &mc_local_variables); + int cursor = 0; + char *tok = NULL, *tok2 = NULL; + + xbt_dynar_t tokens1 = xbt_str_split(expr, ";"); + xbt_dynar_t tokens2; - /* Get local variables in libsimgrid for state equality detection */ - xbt_dict_t libsimgrid_location_list = MC_get_location_list(libsimgrid_path); - MC_get_local_variables(libsimgrid_path, libsimgrid_location_list, &mc_local_variables); + loc->type = e_dw_compose; + loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL); - xbt_dict_free(&libsimgrid_location_list); - xbt_dict_free(&binary_location_list); - - /* Get .plt section (start and end addresses) for data libsimgrid and data program comparison */ - get_libsimgrid_plt_section(); - get_binary_plt_section(); + while(cursor < xbt_dynar_length(tokens1)){ - /* Get global variables */ - MC_get_global_variables(xbt_binary_name); - MC_get_global_variables(libsimgrid_path); + tok = xbt_dynar_get_as(tokens1, cursor, char*); + tokens2 = xbt_str_split(tok, " "); + tok2 = xbt_dynar_get_as(tokens2, 0, char*); + + if(strncmp(tok2, "DW_OP_reg", 9) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_register; + new_element->location.reg = atoi(strtok(tok2, "DW_OP_reg")); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_fbreg:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_fbregister_op; + new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strncmp(tok2, "DW_OP_breg", 10) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_bregister_op; + new_element->location.breg_op.reg = atoi(strtok(tok2, "DW_OP_breg")); + new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strncmp(tok2, "DW_OP_lit", 9) == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_lit; + new_element->location.lit = atoi(strtok(tok2, "DW_OP_lit")); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_piece:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_piece; + new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_plus_uconst:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_plus_uconst; + new_element->location.plus_uconst = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char *)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_abs") == 0 || + strcmp(tok, "DW_OP_and") == 0 || + strcmp(tok, "DW_OP_div") == 0 || + strcmp(tok, "DW_OP_minus") == 0 || + strcmp(tok, "DW_OP_mod") == 0 || + strcmp(tok, "DW_OP_mul") == 0 || + strcmp(tok, "DW_OP_neg") == 0 || + strcmp(tok, "DW_OP_not") == 0 || + strcmp(tok, "DW_OP_or") == 0 || + strcmp(tok, "DW_OP_plus") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_arithmetic; + new_element->location.arithmetic = strdup(strtok(tok2, "DW_OP_")); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_stack_value") == 0){ + }else if(strcmp(tok2, "DW_OP_deref_size:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_deref; + new_element->location.deref_size = (unsigned int short) atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_deref") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_deref; + new_element->location.deref_size = sizeof(void *); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_constu:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_uconstant; + new_element->location.uconstant.bytes = 1; + new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_consts:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_sconstant; + new_element->location.sconstant.bytes = 1; + new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok2, "DW_OP_const1u:") == 0 || + strcmp(tok2, "DW_OP_const2u:") == 0 || + strcmp(tok2, "DW_OP_const4u:") == 0 || + strcmp(tok2, "DW_OP_const8u:") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_uconstant; + new_element->location.uconstant.bytes = tok2[11] - '0'; + new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else if(strcmp(tok, "DW_OP_const1s") == 0 || + strcmp(tok, "DW_OP_const2s") == 0 || + strcmp(tok, "DW_OP_const4s") == 0 || + strcmp(tok, "DW_OP_const8s") == 0){ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_sconstant; + new_element->location.sconstant.bytes = tok2[11] - '0'; + new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); + xbt_dynar_push(loc->location.compose, &new_element); + }else{ + dw_location_t new_element = xbt_new0(s_dw_location_t, 1); + new_element->type = e_dw_unsupported; + xbt_dynar_push(loc->location.compose, &new_element); + } - MC_UNSET_RAW_MEM; + cursor++; + xbt_dynar_free(&tokens2); - /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */ - MC_ignore_stack("e", "*"); - MC_ignore_stack("__ex_cleanup", "*"); - MC_ignore_stack("__ex_mctx_en", "*"); - MC_ignore_stack("__ex_mctx_me", "*"); - MC_ignore_stack("__xbt_ex_ctx_ptr", "*"); - MC_ignore_stack("_log_ev", "*"); - MC_ignore_stack("_throw_ctx", "*"); - MC_ignore_stack("ctx", "*"); - - MC_ignore_stack("next_context", "smx_ctx_sysv_suspend_serial"); - MC_ignore_stack("i", "smx_ctx_sysv_suspend_serial"); + } + + xbt_dynar_free(&tokens1); - /* Ignore local variable about time used for tracing */ - MC_ignore_stack("start_time", "*"); + return loc; + + } - MC_ignore_data_bss(&mc_comp_times, sizeof(mc_comp_times)); - MC_ignore_data_bss(&mc_snapshot_comparison_time, sizeof(mc_snapshot_comparison_time)); - MC_ignore_data_bss(&mc_time, sizeof(mc_time)); +} - if(raw_mem_set) - MC_SET_RAW_MEM; +static xbt_dict_t MC_dwarf_get_location_list(const char *elf_file){ -} + char *command = bprintf("objdump -Wo %s", elf_file); -void MC_init_dot_output(){ + FILE *fp = popen(command, "r"); - colors[0] = "blue"; - colors[1] = "red"; - colors[2] = "green"; - colors[3] = "pink"; - colors[4] = "brown"; - colors[5] = "purple"; - colors[6] = "yellow"; - colors[7] = "orange"; - - dot_output = fopen(_sg_mc_dot_output_file, "w"); - - if(dot_output == NULL){ - perror("Error open dot output file"); + if(fp == NULL){ + perror("popen for objdump failed"); xbt_abort(); } - fprintf(dot_output, "digraph graphname{\n fixedsize=true; rankdir=TB; ranksep=.20; edge [fontsize=12]; node [fontsize=10, shape=circle,width=.5 ]; graph [resolution=20, fontsize=10];\n"); - -} - -void MC_modelcheck_safety(void) -{ - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + int debug = 0; /*Detect if the program has been compiled with -g */ - /* Check if MC is already initialized */ - if (initial_state_safety) - return; + xbt_dict_t location_list = xbt_dict_new_homogeneous(NULL); + char *line = NULL, *loc_expr = NULL; + ssize_t read; + size_t n = 0; + int cursor_remove; + xbt_dynar_t split = NULL; - mc_time = xbt_new0(double, simix_process_maxpid); + while ((read = xbt_getline(&line, &n, fp)) != -1) { - /* mc_time refers to clock for each process -> ignore it for heap comparison */ - MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double)); + /* Wipeout the new line character */ + line[read - 1] = '\0'; - /* Initialize the data structures that must be persistent across every - iteration of the model-checker (in RAW memory) */ - - MC_SET_RAW_MEM; + xbt_str_trim(line, NULL); + + if(n == 0) + continue; - /* Initialize statistics */ - mc_stats = xbt_new0(s_mc_stats_t, 1); - mc_stats->state_size = 1; + if(strlen(line) == 0) + continue; - /* Create exploration stack */ - mc_stack_safety = xbt_fifo_new(); + if(debug == 0){ - if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) - MC_init_dot_output(); + if(strncmp(line, elf_file, strlen(elf_file)) == 0) + continue; + + if(strncmp(line, "Contents", 8) == 0) + continue; - MC_UNSET_RAW_MEM; + if(strncmp(line, "Offset", 6) == 0){ + debug = 1; + continue; + } + } - if(_sg_mc_visited > 0){ - MC_init(); - }else{ - MC_SET_RAW_MEM; - MC_init_memory_map_info(); - get_libsimgrid_plt_section(); - get_binary_plt_section(); - MC_UNSET_RAW_MEM; - } + if(debug == 0){ + XBT_INFO("Your program must be compiled with -g"); + xbt_abort(); + } - MC_dpor_init(); + xbt_dynar_t loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL); - MC_SET_RAW_MEM; - /* Save the initial state */ - initial_state_safety = xbt_new0(s_mc_global_t, 1); - initial_state_safety->snapshot = MC_take_snapshot(); - MC_UNSET_RAW_MEM; + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); - MC_dpor(); + while(read != -1 && strcmp("lowpc = strtoul((char *)xbt_dynar_get_as(split, 1, char *), NULL, 16); + new_entry->highpc = strtoul((char *)xbt_dynar_get_as(split, 2, char *), NULL, 16); + + cursor_remove =0; + while(cursor_remove < 3){ + xbt_dynar_remove_at(split, 0, NULL); + cursor_remove++; + } - if(raw_mem_set) - MC_SET_RAW_MEM; + loc_expr = xbt_str_join(split, " "); + xbt_str_ltrim(loc_expr, "("); + xbt_str_rtrim(loc_expr, ")"); + new_entry->location = MC_dwarf_get_location(NULL, loc_expr); - MC_exit(); -} + xbt_dynar_push(loclist, &new_entry); -void MC_modelcheck_liveness(){ + xbt_dynar_free(&split); + free(loc_expr); - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + read = xbt_getline(&line, &n, fp); + if(read != -1){ + line[read - 1] = '\0'; + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); + } - MC_init(); + } - mc_time = xbt_new0(double, simix_process_maxpid); - /* mc_time refers to clock for each process -> ignore it for heap comparison */ - MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double)); - - MC_SET_RAW_MEM; - - /* Initialize statistics */ - mc_stats = xbt_new0(s_mc_stats_t, 1); - mc_stats->state_size = 1; + char *key = bprintf("%d", (int)strtoul((char *)xbt_dynar_get_as(split, 0, char *), NULL, 16)); + xbt_dict_set(location_list, key, loclist, NULL); + xbt_free(key); + + xbt_dynar_free(&split); - /* Create exploration stack */ - mc_stack_liveness = xbt_fifo_new(); + } - /* Create the initial state */ - initial_state_liveness = xbt_new0(s_mc_global_t, 1); + xbt_free(line); + xbt_free(command); + pclose(fp); - if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) - MC_init_dot_output(); - - MC_UNSET_RAW_MEM; + return location_list; +} - MC_ddfs_init(); +static dw_frame_t MC_dwarf_get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){ - /* We're done */ - MC_print_statistics(mc_stats); - xbt_free(mc_time); + xbt_dict_cursor_t cursor = NULL; + char *name; + dw_frame_t res; - if(raw_mem_set) - MC_SET_RAW_MEM; + xbt_dict_foreach(all_variables, cursor, name, res) { + if(offset >= res->start && offset < res->end){ + xbt_dict_cursor_free(&cursor); + return res; + } + } + xbt_dict_cursor_free(&cursor); + return NULL; + } +static dw_variable_t MC_dwarf_get_variable_by_name(dw_frame_t frame, char *var){ -void MC_exit(void) -{ - xbt_free(mc_time); - MC_memory_exit(); - xbt_abort(); -} + unsigned int cursor = 0; + dw_variable_t current_var; -int SIMIX_pre_mc_random(smx_simcall_t simcall){ + xbt_dynar_foreach(frame->variables, cursor, current_var){ + if(strcmp(var, current_var->name) == 0) + return current_var; + } - return simcall->mc_value; + return NULL; } +static int MC_dwarf_get_variable_index(xbt_dynar_t variables, char* var, void *address){ -int MC_random(void) -{ - /*FIXME: return mc_current_state->executed_transition->random.value;*/ - return simcall_mc_random(); -} - -/** - * \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; + if(xbt_dynar_is_empty(variables)) + return 0; - 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); - } - } -} + unsigned int cursor = 0; + int start = 0; + int end = xbt_dynar_length(variables) - 1; + dw_variable_t var_test = NULL; -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; + while(start <= end){ + cursor = (start + end) / 2; + var_test = (dw_variable_t)xbt_dynar_get_as(variables, cursor, dw_variable_t); + if(strcmp(var_test->name, var) < 0){ + start = cursor + 1; + }else if(strcmp(var_test->name, var) > 0){ + end = cursor - 1; + }else{ + if(address){ /* global variable */ + if(var_test->address.address == address) + return -1; + if(var_test->address.address > address) + end = cursor - 1; + else + start = cursor + 1; + }else{ /* local variable */ + return -1; } } } - return deadlock; + + if(strcmp(var_test->name, var) == 0){ + if(address && var_test->address.address < address) + return cursor+1; + else + return cursor; + }else if(strcmp(var_test->name, var) < 0) + return cursor+1; + else + return cursor; + } -/** - * \brief Re-executes from the state at position start all the transitions indicated by - * a given model-checker stack. - * \param stack The stack with the transitions to execute. - * \param start Start index to begin the re-execution. - */ -void MC_replay(xbt_fifo_t stack, int start) -{ - int raw_mem = (mmalloc_get_current_heap() == raw_heap); - int value, i = 1, count = 1; - char *req_str; - smx_simcall_t req = NULL, saved_req = NULL; - xbt_fifo_item_t item, start_item; - mc_state_t state; - smx_process_t process = NULL; +static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_list, xbt_dict_t *local_variables, xbt_dynar_t *global_variables, xbt_dict_t *types){ - XBT_DEBUG("**** Begin Replay ****"); + char *command = bprintf("objdump -Wi %s", elf_file); + + FILE *fp = popen(command, "r"); - if(start == -1){ - /* Restore the initial state */ - MC_restore_snapshot(initial_state_safety->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; - } + if(fp == NULL) + perror("popen for objdump failed"); - start_item = xbt_fifo_get_last_item(stack); - if(start != -1){ - while (i != start){ - start_item = xbt_fifo_get_prev_item(start_item); - i++; - } - } + char *line = NULL, *origin, *abstract_origin, *current_frame = NULL, + *subprogram_name = NULL, *subprogram_start = NULL, *subprogram_end = NULL, + *node_type = NULL, *location_type = NULL, *variable_name = NULL, + *loc_expr = NULL, *name = NULL, *end =NULL, *type_origin = NULL, *global_address = NULL, + *parent_value = NULL; - MC_SET_RAW_MEM; - xbt_dict_reset(first_enabled_state); - xbt_swag_foreach(process, simix_global->process_list){ - if(MC_process_is_enabled(process)){ - char *key = bprintf("%lu", process->pid); - char *data = bprintf("%d", count); - xbt_dict_set(first_enabled_state, key, data, NULL); - xbt_free(key); - } - } - MC_UNSET_RAW_MEM; + ssize_t read =0; + size_t n = 0; + int global_variable = 0, parent = 0, new_frame = 0, new_variable = 1, size = 0, + is_pointer = 0, struct_decl = 0, member_end = 0, + enumeration_size = 0, subrange = 0, union_decl = 0, offset = 0, index = 0; + xbt_dynar_t split = NULL, split2 = NULL; - /* Traverse the stack from the state at position start and re-execute the transitions */ - for (item = start_item; - item != xbt_fifo_get_first_item(stack); - item = xbt_fifo_get_prev_item(item)) { + xbt_dict_t variables_origin = xbt_dict_new_homogeneous(xbt_free); + xbt_dict_t subprograms_origin = xbt_dict_new_homogeneous(xbt_free); - state = (mc_state_t) xbt_fifo_get_item_content(item); - saved_req = MC_state_get_executed_request(state, &value); - - MC_SET_RAW_MEM; - char *key = bprintf("%lu", saved_req->issuer->pid); - xbt_dict_remove(first_enabled_state, key); - xbt_free(key); - MC_UNSET_RAW_MEM; - - 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; + dw_frame_t variable_frame, subroutine_frame = NULL; - /* 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(); + e_dw_type_type type_type = -1; - count++; + read = xbt_getline(&line, &n, fp); - MC_SET_RAW_MEM; - /* Insert in dict all enabled processes */ - xbt_swag_foreach(process, simix_global->process_list){ - if(MC_process_is_enabled(process) /*&& !MC_state_process_is_done(state, process)*/){ - char *key = bprintf("%lu", process->pid); - if(xbt_dict_get_or_null(first_enabled_state, key) == NULL){ - char *data = bprintf("%d", count); - xbt_dict_set(first_enabled_state, key, data, NULL); - } - xbt_free(key); - } + while (read != -1) { + + /* Wipeout the new line character */ + line[read - 1] = '\0'; + + if(n == 0 || strlen(line) == 0){ + read = xbt_getline(&line, &n, fp); + continue; } - MC_UNSET_RAW_MEM; - - /* Update statistics */ - mc_stats->visited_states++; - mc_stats->executed_transitions++; - } + xbt_str_ltrim(line, NULL); + xbt_str_strip_spaces(line); + + if(line[0] != '<'){ + read = xbt_getline(&line, &n, fp); + continue; + } + + xbt_dynar_free(&split); + split = xbt_str_split(line, " "); - XBT_DEBUG("**** End Replay ****"); + /* Get node type */ + node_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *); - if(raw_mem) - MC_SET_RAW_MEM; - else - MC_UNSET_RAW_MEM; - + if(strcmp(node_type, "(DW_TAG_subprogram)") == 0){ /* New frame */ -} + dw_frame_t frame = NULL; -void MC_replay_liveness(xbt_fifo_t stack, int all_stack) -{ + strtok(xbt_dynar_get_as(split, 0, char *), "<"); + subprogram_start = xbt_strdup(strtok(NULL, "<")); + xbt_str_rtrim(subprogram_start, ">:"); - initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + read = xbt_getline(&line, &n, fp); + + while(read != -1){ - int value; - char *req_str; - smx_simcall_t req = NULL, saved_req = NULL; - xbt_fifo_item_t item; - mc_state_t state; - mc_pair_t pair; - int depth = 1; + /* Wipeout the new line character */ + line[read - 1] = '\0'; - XBT_DEBUG("**** Begin Replay ****"); + if(n == 0 || strlen(line) == 0){ + read = xbt_getline(&line, &n, fp); + continue; + } + + xbt_dynar_free(&split); + xbt_str_rtrim(line, NULL); + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); + + node_type = xbt_dynar_get_as(split, 1, char *); - /* Restore the initial state */ - MC_restore_snapshot(initial_state_liveness->snapshot); + if(strncmp(node_type, "DW_AT_", 6) != 0) + break; - /* 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 */ - if(!initial_state_liveness->raw_mem_set) - MC_UNSET_RAW_MEM; + if(strcmp(node_type, "DW_AT_sibling") == 0){ - if(all_stack){ + subprogram_end = xbt_strdup(xbt_dynar_get_as(split, 3, char*)); + xbt_str_ltrim(subprogram_end, "<0x"); + xbt_str_rtrim(subprogram_end, ">"); + + }else if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){ /* Frame already in dict */ + + new_frame = 0; + abstract_origin = xbt_strdup(xbt_dynar_get_as(split, 2, char*)); + xbt_str_ltrim(abstract_origin, "<0x"); + xbt_str_rtrim(abstract_origin, ">"); + subprogram_name = (char *)xbt_dict_get_or_null(subprograms_origin, abstract_origin); + frame = xbt_dict_get_or_null(*local_variables, subprogram_name); + xbt_free(abstract_origin); - item = xbt_fifo_get_last_item(stack); + }else if(strcmp(node_type, "DW_AT_name") == 0){ - while(depth <= xbt_fifo_size(stack)){ + new_frame = 1; + xbt_free(current_frame); + frame = xbt_new0(s_dw_frame_t, 1); + frame->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *)); + frame->variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp); + frame->frame_base = xbt_new0(s_dw_location_t, 1); + current_frame = strdup(frame->name); - pair = (mc_pair_t) xbt_fifo_get_item_content(item); - state = (mc_state_t) pair->graph_state; + xbt_dict_set(subprograms_origin, subprogram_start, xbt_strdup(frame->name), NULL); + + }else if(strcmp(node_type, "DW_AT_frame_base") == 0){ + + location_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *); + + if(strcmp(location_type, "list)") == 0){ /* Search location in location list */ + + frame->frame_base = MC_dwarf_get_location(location_list, xbt_dynar_get_as(split, 3, char *)); + + }else{ + + xbt_str_strip_spaces(line); + split2 = xbt_str_split(line, "("); + xbt_dynar_remove_at(split2, 0, NULL); + loc_expr = xbt_str_join(split2, " "); + xbt_str_rtrim(loc_expr, ")"); + frame->frame_base = MC_dwarf_get_location(NULL, loc_expr); + xbt_dynar_free(&split2); + xbt_free(loc_expr); - 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->visited_pairs++; - mc_stats->executed_transitions++; + }else if(strcmp(node_type, "DW_AT_low_pc") == 0){ + + if(frame != NULL) + frame->low_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); - item = xbt_fifo_get_prev_item(item); - } + }else if(strcmp(node_type, "DW_AT_high_pc") == 0){ - }else{ + if(frame != NULL) + frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); - /* 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)) { + }else if(strcmp(node_type, "DW_AT_MIPS_linkage_name:") == 0){ - pair = (mc_pair_t) xbt_fifo_get_item_content(item); - state = (mc_state_t) pair->graph_state; + xbt_free(frame->name); + xbt_free(current_frame); + frame->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *)); + current_frame = strdup(frame->name); + xbt_dict_set(subprograms_origin, subprogram_start, xbt_strdup(frame->name), NULL); - 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); - } - } + + read = xbt_getline(&line, &n, fp); + + } - SIMIX_simcall_pre(req, value); - MC_wait_for_requests(); + if(new_frame == 1){ + frame->start = strtoul(subprogram_start, NULL, 16); + if(subprogram_end != NULL) + frame->end = strtoul(subprogram_end, NULL, 16); + xbt_dict_set(*local_variables, frame->name, frame, NULL); } - depth++; - - /* Update statistics */ - mc_stats->visited_pairs++; - mc_stats->executed_transitions++; - } - } + xbt_free(subprogram_start); + xbt_free(subprogram_end); + subprogram_end = NULL; + - XBT_DEBUG("**** End Replay ****"); + }else if(strcmp(node_type, "(DW_TAG_variable)") == 0){ /* New variable */ - if(initial_state_liveness->raw_mem_set) - MC_SET_RAW_MEM; - else - MC_UNSET_RAW_MEM; - -} + dw_variable_t var = NULL; + + parent_value = strdup(xbt_dynar_get_as(split, 0, char *)); + parent_value = strtok(parent_value,"<"); + xbt_str_rtrim(parent_value, ">"); + parent = atoi(parent_value); + xbt_free(parent_value); + + if(parent == 1) + global_variable = 1; + + strtok(xbt_dynar_get_as(split, 0, char *), "<"); + origin = xbt_strdup(strtok(NULL, "<")); + xbt_str_rtrim(origin, ">:"); + + read = xbt_getline(&line, &n, fp); + + while(read != -1){ -/** - * \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_safety(xbt_fifo_t stack) -{ + /* Wipeout the new line character */ + line[read - 1] = '\0'; + + if(n == 0 || strlen(line) == 0){ + read = xbt_getline(&line, &n, fp); + continue; + } + + xbt_dynar_free(&split); + xbt_str_rtrim(line, NULL); + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + node_type = xbt_dynar_get_as(split, 1, char *); - MC_show_stack_safety(stack); + if(strncmp(node_type, "DW_AT_", 6) != 0) + break; - if(!_sg_mc_checkpoint){ + if(strcmp(node_type, "DW_AT_name") == 0){ - mc_state_t state; + var = xbt_new0(s_dw_variable_t, 1); + var->name = xbt_strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *)); + xbt_dict_set(variables_origin, origin, xbt_strdup(var->name), NULL); + + }else if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){ - MC_SET_RAW_MEM; - while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) - MC_state_delete(state); - MC_UNSET_RAW_MEM; + new_variable = 0; - } + abstract_origin = xbt_dynar_get_as(split, 2, char *); + xbt_str_ltrim(abstract_origin, "<0x"); + xbt_str_rtrim(abstract_origin, ">"); + + variable_name = (char *)xbt_dict_get_or_null(variables_origin, abstract_origin); + variable_frame = MC_dwarf_get_frame_by_offset(*local_variables, strtoul(abstract_origin, NULL, 16)); + var = MC_dwarf_get_variable_by_name(variable_frame, variable_name); - if(raw_mem_set) - MC_SET_RAW_MEM; - else - MC_UNSET_RAW_MEM; - -} + }else if(strcmp(node_type, "DW_AT_location") == 0){ + if(var != NULL){ + + if(!global_variable){ + + location_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *); + + if(strcmp(location_type, "list)") == 0){ /* Search location in location list */ + var->address.location = MC_dwarf_get_location(location_list, xbt_dynar_get_as(split, 3, char *)); + }else{ + xbt_str_strip_spaces(line); + split2 = xbt_str_split(line, "("); + xbt_dynar_remove_at(split2, 0, NULL); + loc_expr = xbt_str_join(split2, " "); + xbt_str_rtrim(loc_expr, ")"); + if(strncmp("DW_OP_addr", loc_expr, 10) == 0){ + global_variable = 1; + xbt_dynar_free(&split2); + split2 = xbt_str_split(loc_expr, " "); + if(strcmp(elf_file, xbt_binary_name) != 0) + var->address.address = (char *)start_text_libsimgrid + (long)((void *)strtoul(xbt_dynar_get_as(split2, xbt_dynar_length(split2) - 1, char*), NULL, 16)); + else + var->address.address = (void *)strtoul(xbt_dynar_get_as(split2, xbt_dynar_length(split2) - 1, char*), NULL, 16); + }else{ + var->address.location = MC_dwarf_get_location(NULL, loc_expr); + } + xbt_dynar_free(&split2); + xbt_free(loc_expr); + } + }else{ + global_address = xbt_strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *)); + xbt_str_rtrim(global_address, ")"); + if(strcmp(elf_file, xbt_binary_name) != 0) + var->address.address = (char *)start_text_libsimgrid + (long)((void *)strtoul(global_address, NULL, 16)); + else + var->address.address = (void *)strtoul(global_address, NULL, 16); + xbt_free(global_address); + global_address = NULL; + } -void MC_show_stack_safety(xbt_fifo_t stack) -{ - int value; - mc_state_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_t) (xbt_fifo_get_item_content(item))) - : (NULL)); item = xbt_fifo_get_prev_item(item)) { - 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); - } - } -} - -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(mc_stack_safety); -} + } + + }else if(strcmp(node_type, "DW_AT_type") == 0){ + + type_origin = xbt_strdup(xbt_dynar_get_as(split, 3, char *)); + xbt_str_ltrim(type_origin, "<0x"); + xbt_str_rtrim(type_origin, ">"); + + }else if(strcmp(node_type, "DW_AT_declaration") == 0){ + new_variable = 0; + if(new_variable){ + dw_variable_free(var); + var = NULL; + } + + }else if(strcmp(node_type, "DW_AT_artificial") == 0){ + + new_variable = 0; + if(new_variable){ + dw_variable_free(var); + var = NULL; + } + + } -void MC_show_stack_liveness(xbt_fifo_t stack){ - int value; - mc_pair_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_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"); + read = xbt_getline(&line, &n, fp); + } - } - } -} -void MC_dump_stack_liveness(xbt_fifo_t stack){ + if(new_variable == 1){ + + if(!global_variable){ + variable_frame = xbt_dict_get_or_null(*local_variables, current_frame); + var->type_origin = strdup(type_origin); + var->global = 0; + index = MC_dwarf_get_variable_index(variable_frame->variables, var->name, NULL); + if(index != -1) + xbt_dynar_insert_at(variable_frame->variables, index, &var); + }else{ + var->type_origin = strdup(type_origin); + var->global = 1; + index = MC_dwarf_get_variable_index(*global_variables, var->name, var->address.address); + if(index != -1) + xbt_dynar_insert_at(*global_variables, index, &var); + } - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + xbt_free(type_origin); + type_origin = NULL; + } - mc_pair_t pair; + global_variable = 0; + new_variable = 1; - MC_SET_RAW_MEM; - while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL) - MC_pair_delete(pair); - MC_UNSET_RAW_MEM; + }else if(strcmp(node_type, "(DW_TAG_inlined_subroutine)") == 0){ - if(raw_mem_set) - MC_SET_RAW_MEM; + read = xbt_getline(&line, &n, fp); -} + while(read != -1){ + /* Wipeout the new line character */ + line[read - 1] = '\0'; -void MC_print_statistics(mc_stats_t stats) -{ - if(stats->expanded_pairs == 0){ - XBT_INFO("Expanded states = %lu", stats->expanded_states); - XBT_INFO("Visited states = %lu", stats->visited_states); - }else{ - XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs); - XBT_INFO("Visited pairs = %lu", stats->visited_pairs); - } - XBT_INFO("Executed transitions = %lu", stats->executed_transitions); - MC_SET_RAW_MEM; - if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')){ - fprintf(dot_output, "}\n"); - fclose(dot_output); - } - MC_UNSET_RAW_MEM; -} + if(n == 0 || strlen(line) == 0){ + read = xbt_getline(&line, &n, fp); + continue; + } -void MC_assert(int prop) -{ - if (MC_is_active() && !prop){ - XBT_INFO("**************************"); - XBT_INFO("*** PROPERTY NOT VALID ***"); - XBT_INFO("**************************"); - XBT_INFO("Counter-example execution trace:"); - MC_dump_stack_safety(mc_stack_safety); - MC_print_statistics(mc_stats); - xbt_abort(); - } -} + xbt_dynar_free(&split); + xbt_str_rtrim(line, NULL); + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); + + if(strncmp(xbt_dynar_get_as(split, 1, char *), "DW_AT_", 6) != 0) + break; + + node_type = xbt_dynar_get_as(split, 1, char *); -static void MC_assert_pair(int prop){ - if (MC_is_active() && !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(mc_stats); - xbt_abort(); - } -} + if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){ -void MC_process_clock_add(smx_process_t process, double amount) -{ - mc_time[process->pid] += amount; -} + origin = xbt_dynar_get_as(split, 2, char *); + xbt_str_ltrim(origin, "<0x"); + xbt_str_rtrim(origin, ">"); + + subprogram_name = (char *)xbt_dict_get_or_null(subprograms_origin, origin); + subroutine_frame = xbt_dict_get_or_null(*local_variables, subprogram_name); + + }else if(strcmp(node_type, "DW_AT_low_pc") == 0){ -double MC_process_clock_get(smx_process_t process) -{ - if(mc_time){ - if(process != NULL) - return mc_time[process->pid]; - else - return -1; - }else{ - return 0; - } -} + subroutine_frame->low_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); -void MC_automaton_load(const char *file){ + }else if(strcmp(node_type, "DW_AT_high_pc") == 0){ - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + subroutine_frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); + } - MC_SET_RAW_MEM; + read = xbt_getline(&line, &n, fp); + + } - if (_mc_property_automaton == NULL) - _mc_property_automaton = xbt_automaton_new(); - - xbt_automaton_load(_mc_property_automaton,file); + }else if(strcmp(node_type, "(DW_TAG_base_type)") == 0 + || strcmp(node_type, "(DW_TAG_enumeration_type)") == 0 + || strcmp(node_type, "(DW_TAG_enumerator)") == 0 + || strcmp(node_type, "(DW_TAG_typedef)") == 0 + || strcmp(node_type, "(DW_TAG_const_type)") == 0 + || strcmp(node_type, "(DW_TAG_subroutine_type)") == 0 + || strcmp(node_type, "(DW_TAG_volatile_type)") == 0 + || (is_pointer = !strcmp(node_type, "(DW_TAG_pointer_type)"))){ + + if(strcmp(node_type, "(DW_TAG_base_type)") == 0) + type_type = e_dw_base_type; + else if(strcmp(node_type, "(DW_TAG_enumeration_type)") == 0) + type_type = e_dw_enumeration_type; + else if(strcmp(node_type, "(DW_TAG_enumerator)") == 0) + type_type = e_dw_enumerator; + else if(strcmp(node_type, "(DW_TAG_typedef)") == 0) + type_type = e_dw_typedef; + else if(strcmp(node_type, "(DW_TAG_const_type)") == 0) + type_type = e_dw_const_type; + else if(strcmp(node_type, "(DW_TAG_pointer_type)") == 0) + type_type = e_dw_pointer_type; + else if(strcmp(node_type, "(DW_TAG_subroutine_type)") == 0) + type_type = e_dw_subroutine_type; + else if(strcmp(node_type, "(DW_TAG_volatile_type)") == 0) + type_type = e_dw_volatile_type; - MC_UNSET_RAW_MEM; + strtok(xbt_dynar_get_as(split, 0, char *), "<"); + origin = strdup(strtok(NULL, "<")); + xbt_str_rtrim(origin, ">:"); + + read = xbt_getline(&line, &n, fp); + + while(read != -1){ + + /* Wipeout the new line character */ + line[read - 1] = '\0'; - if(raw_mem_set) - MC_SET_RAW_MEM; + if(n == 0 || strlen(line) == 0){ + read = xbt_getline(&line, &n, fp); + continue; + } -} + xbt_dynar_free(&split); + xbt_str_rtrim(line, NULL); + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); + + if(strncmp(xbt_dynar_get_as(split, 1, char *), "DW_AT_", 6) != 0) + break; -void MC_automaton_new_propositional_symbol(const char* id, void* fct) { + node_type = xbt_dynar_get_as(split, 1, char *); - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + if(strcmp(node_type, "DW_AT_byte_size") == 0){ + size = strtol(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*), NULL, 10); + if(type_type == e_dw_enumeration_type) + enumeration_size = size; + }else if(strcmp(node_type, "DW_AT_name") == 0){ + end = xbt_str_join(split, " "); + xbt_dynar_free(&split); + split = xbt_str_split(end, "):"); + xbt_str_ltrim(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*), NULL); + name = xbt_strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*)); + }else if(strcmp(node_type, "DW_AT_type") == 0){ + type_origin = xbt_strdup(xbt_dynar_get_as(split, 3, char *)); + xbt_str_ltrim(type_origin, "<0x"); + xbt_str_rtrim(type_origin, ">"); + } + + read = xbt_getline(&line, &n, fp); + } - MC_SET_RAW_MEM; + dw_type_t type = xbt_new0(s_dw_type_t, 1); + type->type = type_type; + if(name) + type->name = xbt_strdup(name); + else + type->name = xbt_strdup("undefined"); + type->is_pointer_type = is_pointer; + type->id = (void *)strtoul(origin, NULL, 16); + if(type_origin) + type->dw_type_id = xbt_strdup(type_origin); + if(type_type == e_dw_enumerator) + type->size = enumeration_size; + else + type->size = size; + type->members = NULL; - if (_mc_property_automaton == NULL) - _mc_property_automaton = xbt_automaton_new(); + xbt_dict_set(*types, origin, type, NULL); - xbt_automaton_propositional_symbol_new(_mc_property_automaton,id,fct); + xbt_free(name); + name = NULL; + xbt_free(type_origin); + type_origin = NULL; + xbt_free(end); + end = NULL; - MC_UNSET_RAW_MEM; + is_pointer = 0; + size = 0; + xbt_free(origin); - if(raw_mem_set) - MC_SET_RAW_MEM; - -} + }else if(strcmp(node_type, "(DW_TAG_structure_type)") == 0 || strcmp(node_type, "(DW_TAG_union_type)") == 0){ + + if(strcmp(node_type, "(DW_TAG_structure_type)") == 0) + struct_decl = 1; + else + union_decl = 1; -/************ MC_ignore ***********/ + strtok(xbt_dynar_get_as(split, 0, char *), "<"); + origin = strdup(strtok(NULL, "<")); + xbt_str_rtrim(origin, ">:"); + + read = xbt_getline(&line, &n, fp); -void heap_ignore_region_free(mc_heap_ignore_region_t r){ - xbt_free(r); -} + dw_type_t type = NULL; -void heap_ignore_region_free_voidp(void *r){ - heap_ignore_region_free((mc_heap_ignore_region_t) * (void **) r); -} + while(read != -1){ + + while(read != -1){ + + /* Wipeout the new line character */ + line[read - 1] = '\0'; -void MC_ignore_heap(void *address, size_t size){ + if(n == 0 || strlen(line) == 0){ + read = xbt_getline(&line, &n, fp); + continue; + } - int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + xbt_dynar_free(&split); + xbt_str_rtrim(line, NULL); + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); + + node_type = xbt_dynar_get_as(split, 1, char *); - MC_SET_RAW_MEM; + if(strncmp(node_type, "DW_AT_", 6) != 0){ + member_end = 1; + break; + } - mc_heap_ignore_region_t region = NULL; - region = xbt_new0(s_mc_heap_ignore_region_t, 1); - region->address = address; - region->size = size; - - region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1; - - if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){ - region->fragment = -1; - ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_block.ignore++; - }else{ - region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type; - ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_frag.ignore[region->fragment]++; - } - - if(mc_heap_comparison_ignore == NULL){ - mc_heap_comparison_ignore = xbt_dynar_new(sizeof(mc_heap_ignore_region_t), heap_ignore_region_free_voidp); - xbt_dynar_push(mc_heap_comparison_ignore, ®ion); - if(!raw_mem_set) - MC_UNSET_RAW_MEM; - return; - } + if(strcmp(node_type, "DW_AT_byte_size") == 0){ + size = strtol(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*), NULL, 10); + }else if(strcmp(node_type, "DW_AT_name") == 0){ + xbt_free(end); + end = xbt_str_join(split, " "); + xbt_dynar_free(&split); + split = xbt_str_split(end, "):"); + xbt_str_ltrim(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*), NULL); + name = xbt_strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*)); + }else if(strcmp(node_type, "DW_AT_type") == 0){ + type_origin = xbt_strdup(xbt_dynar_get_as(split, 3, char *)); + xbt_str_ltrim(type_origin, "<0x"); + xbt_str_rtrim(type_origin, ">"); + }else if(strcmp(node_type, "DW_AT_data_member_location:") == 0){ + xbt_free(end); + end = xbt_str_join(split, " "); + xbt_dynar_free(&split); + split = xbt_str_split(end, "DW_OP_plus_uconst:"); + xbt_str_ltrim(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *), NULL); + xbt_str_rtrim(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *), ")"); + offset = strtol(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*), NULL, 10); + } - unsigned int cursor = 0; - mc_heap_ignore_region_t current_region = NULL; - int start = 0; - int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1; - - while(start <= end){ - cursor = (start + end) / 2; - current_region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t); - if(current_region->address == address){ - heap_ignore_region_free(region); - if(!raw_mem_set) - MC_UNSET_RAW_MEM; - return; - } - if(current_region->address < address) - start = cursor + 1; - if(current_region->address > address) - end = cursor - 1; - } + read = xbt_getline(&line, &n, fp); + + } - if(current_region->address < address) - xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor + 1, ®ion); - else - xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor, ®ion); + if(member_end && type){ + member_end = 0; + + dw_type_t member_type = xbt_new0(s_dw_type_t, 1); + member_type->name = xbt_strdup(name); + member_type->size = size; + member_type->is_pointer_type = is_pointer; + member_type->id = (void *)strtoul(origin, NULL, 16); + member_type->offset = offset; + if(type_origin) + member_type->dw_type_id = xbt_strdup(type_origin); + + xbt_dynar_push(type->members, &member_type); + + xbt_free(name); + name = NULL; + xbt_free(end); + end = NULL; + xbt_free(type_origin); + type_origin = NULL; + size = 0; + offset = 0; + + xbt_free(origin); + origin = NULL; + strtok(xbt_dynar_get_as(split, 0, char *), "<"); + origin = strdup(strtok(NULL, "<")); + xbt_str_rtrim(origin, ">:"); - MC_UNSET_RAW_MEM; + } - if(raw_mem_set) - MC_SET_RAW_MEM; + if(struct_decl || union_decl){ + type = xbt_new0(s_dw_type_t, 1); + if(struct_decl) + type->type = e_dw_structure_type; + else + type->type = e_dw_union_type; + type->name = xbt_strdup(name); + type->size = size; + type->is_pointer_type = is_pointer; + type->id = (void *)strtoul(origin, NULL, 16); + if(type_origin) + type->dw_type_id = xbt_strdup(type_origin); + type->members = xbt_dynar_new(sizeof(dw_type_t), dw_type_free_voidp); + + xbt_dict_set(*types, origin, type, NULL); + + xbt_free(name); + name = NULL; + xbt_free(end); + end = NULL; + xbt_free(type_origin); + type_origin = NULL; + size = 0; + struct_decl = 0; + union_decl = 0; + + } + + if(strcmp(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *), "(DW_TAG_member)") != 0) + break; + + read = xbt_getline(&line, &n, fp); + + } + + xbt_free(origin); + origin = NULL; + + }else if(strcmp(node_type, "(DW_TAG_array_type)") == 0){ + + strtok(xbt_dynar_get_as(split, 0, char *), "<"); + origin = strdup(strtok(NULL, "<")); + xbt_str_rtrim(origin, ">:"); + + read = xbt_getline(&line, &n, fp); + + dw_type_t type = NULL; + + while(read != -1){ + + while(read != -1){ + + /* Wipeout the new line character */ + line[read - 1] = '\0'; + + if(n == 0 || strlen(line) == 0){ + read = xbt_getline(&line, &n, fp); + continue; + } + + xbt_dynar_free(&split); + xbt_str_rtrim(line, NULL); + xbt_str_strip_spaces(line); + split = xbt_str_split(line, " "); + + node_type = xbt_dynar_get_as(split, 1, char *); + + if(strncmp(node_type, "DW_AT_", 6) != 0) + break; + + if(strcmp(node_type, "DW_AT_upper_bound") == 0){ + size = strtol(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*), NULL, 10); + }else if(strcmp(node_type, "DW_AT_name") == 0){ + end = xbt_str_join(split, " "); + xbt_dynar_free(&split); + split = xbt_str_split(end, "):"); + xbt_str_ltrim(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*), NULL); + name = xbt_strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char*)); + }else if(strcmp(node_type, "DW_AT_type") == 0){ + type_origin = xbt_strdup(xbt_dynar_get_as(split, 3, char *)); + xbt_str_ltrim(type_origin, "<0x"); + xbt_str_rtrim(type_origin, ">"); + } + + read = xbt_getline(&line, &n, fp); + + } + + if(strcmp(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *), "(DW_TAG_subrange_type)") == 0){ + subrange = 1; + } + + if(subrange && type){ + type->size = size; + + xbt_free(name); + name = NULL; + xbt_free(end); + end = NULL; + xbt_free(type_origin); + type_origin = NULL; + size = 0; + + xbt_free(origin); + origin = NULL; + strtok(xbt_dynar_get_as(split, 0, char *), "<"); + origin = strdup(strtok(NULL, "<")); + xbt_str_rtrim(origin, ">:"); + + }else { + + type = xbt_new0(s_dw_type_t, 1); + type->type = e_dw_array_type; + type->name = xbt_strdup(name); + type->is_pointer_type = is_pointer; + type->id = (void *)strtoul(origin, NULL, 16); + if(type_origin) + type->dw_type_id = xbt_strdup(type_origin); + type->members = NULL; + + xbt_dict_set(*types, origin, type, NULL); + + xbt_free(name); + name = NULL; + xbt_free(end); + end = NULL; + xbt_free(type_origin); + type_origin = NULL; + size = 0; + } + + if(strcmp(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *), "(DW_TAG_subrange_type)") != 0) + break; + + read = xbt_getline(&line, &n, fp); + + } + + xbt_free(origin); + origin = NULL; + + }else{ + + read = xbt_getline(&line, &n, fp); + + } + + } + + xbt_dynar_free(&split); + xbt_dict_free(&variables_origin); + xbt_dict_free(&subprograms_origin); + xbt_free(line); + xbt_free(command); + pclose(fp); + +} + + +/******************************* Ignore mechanism *******************************/ +/*********************************************************************************/ + +xbt_dynar_t mc_checkpoint_ignore; + +typedef struct s_mc_stack_ignore_variable{ + char *var_name; + char *frame; +}s_mc_stack_ignore_variable_t, *mc_stack_ignore_variable_t; + +typedef struct s_mc_data_bss_ignore_variable{ + char *name; +}s_mc_data_bss_ignore_variable_t, *mc_data_bss_ignore_variable_t; + +/**************************** Free functions ******************************/ + +static void stack_ignore_variable_free(mc_stack_ignore_variable_t v){ + xbt_free(v->var_name); + xbt_free(v->frame); + xbt_free(v); +} + +static void stack_ignore_variable_free_voidp(void *v){ + stack_ignore_variable_free((mc_stack_ignore_variable_t) * (void **) v); +} + +void heap_ignore_region_free(mc_heap_ignore_region_t r){ + xbt_free(r); +} + +void heap_ignore_region_free_voidp(void *r){ + heap_ignore_region_free((mc_heap_ignore_region_t) * (void **) r); +} + +static void data_bss_ignore_variable_free(mc_data_bss_ignore_variable_t v){ + xbt_free(v->name); + xbt_free(v); +} + +static void data_bss_ignore_variable_free_voidp(void *v){ + data_bss_ignore_variable_free((mc_data_bss_ignore_variable_t) * (void **) v); +} + +static void checkpoint_ignore_region_free(mc_checkpoint_ignore_region_t r){ + xbt_free(r); +} + +static void checkpoint_ignore_region_free_voidp(void *r){ + checkpoint_ignore_region_free((mc_checkpoint_ignore_region_t) * (void **) r); +} + +/***********************************************************************/ + +void MC_ignore_heap(void *address, size_t size){ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + mc_heap_ignore_region_t region = NULL; + region = xbt_new0(s_mc_heap_ignore_region_t, 1); + region->address = address; + region->size = size; + + region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1; + + if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){ + region->fragment = -1; + ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_block.ignore++; + }else{ + region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type; + ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_frag.ignore[region->fragment]++; + } + + if(mc_heap_comparison_ignore == NULL){ + mc_heap_comparison_ignore = xbt_dynar_new(sizeof(mc_heap_ignore_region_t), heap_ignore_region_free_voidp); + xbt_dynar_push(mc_heap_comparison_ignore, ®ion); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return; + } + + unsigned int cursor = 0; + mc_heap_ignore_region_t current_region = NULL; + int start = 0; + int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1; + + while(start <= end){ + cursor = (start + end) / 2; + current_region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t); + if(current_region->address == address){ + heap_ignore_region_free(region); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return; + }else if(current_region->address < address){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + + if(current_region->address < address) + xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor + 1, ®ion); + else + xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor, ®ion); + + if(!raw_mem_set) + MC_UNSET_RAW_MEM; } void MC_remove_ignore_heap(void *address, size_t size){ @@ -912,15 +1347,15 @@ void MC_remove_ignore_heap(void *address, size_t size){ if(region->address == address){ ignore_found = 1; break; - } - if(region->address < address) + }else if(region->address < address){ start = cursor + 1; - if(region->address > address){ + }else{ if((char * )region->address <= ((char *)address + size)){ ignore_found = 1; break; - }else + }else{ end = cursor - 1; + } } } @@ -929,207 +1364,209 @@ void MC_remove_ignore_heap(void *address, size_t size){ MC_remove_ignore_heap(address, size); } - MC_UNSET_RAW_MEM; - - if(raw_mem_set) - MC_SET_RAW_MEM; - -} - -void data_bss_ignore_variable_free(mc_data_bss_ignore_variable_t v){ - xbt_free(v); -} + if(!raw_mem_set) + MC_UNSET_RAW_MEM; -void data_bss_ignore_variable_free_voidp(void *v){ - data_bss_ignore_variable_free((mc_data_bss_ignore_variable_t) * (void **) v); } -void MC_ignore_data_bss(void *address, size_t size){ +void MC_ignore_global_variable(const char *name){ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); MC_SET_RAW_MEM; - - if(mc_data_bss_comparison_ignore == NULL) - mc_data_bss_comparison_ignore = xbt_dynar_new(sizeof(mc_data_bss_ignore_variable_t), data_bss_ignore_variable_free_voidp); - mc_data_bss_ignore_variable_t var = NULL; - var = xbt_new0(s_mc_data_bss_ignore_variable_t, 1); - var->address = address; - var->size = size; + if(mc_global_variables_libsimgrid){ - if(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){ - - xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var); - - }else{ - unsigned int cursor = 0; + dw_variable_t current_var; int start = 0; - int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1; - mc_data_bss_ignore_variable_t current_var = NULL; + int end = xbt_dynar_length(mc_global_variables_libsimgrid) - 1; while(start <= end){ - cursor = (start + end) / 2; - current_var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t); - if(current_var->address == address){ - data_bss_ignore_variable_free(var); - MC_UNSET_RAW_MEM; - if(raw_mem_set) - MC_SET_RAW_MEM; - return; - } - if(current_var->address < address) + cursor = (start + end) /2; + current_var = (dw_variable_t)xbt_dynar_get_as(mc_global_variables_libsimgrid, cursor, dw_variable_t); + if(strcmp(current_var->name, name) == 0){ + xbt_dynar_remove_at(mc_global_variables_libsimgrid, cursor, NULL); + start = 0; + end = xbt_dynar_length(mc_global_variables_libsimgrid) - 1; + }else if(strcmp(current_var->name, name) < 0){ start = cursor + 1; - if(current_var->address > address) + }else{ end = cursor - 1; + } } + + }else{ - if(current_var->address < address) - xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor + 1, &var); - else - xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor, &var); - - } - - /* Remove variable from mc_global_variables */ + if(mc_data_bss_comparison_ignore == NULL) + mc_data_bss_comparison_ignore = xbt_dynar_new(sizeof(mc_data_bss_ignore_variable_t), data_bss_ignore_variable_free_voidp); - if(mc_global_variables != NULL){ + mc_data_bss_ignore_variable_t var = NULL; + var = xbt_new0(s_mc_data_bss_ignore_variable_t, 1); + var->name = strdup(name); - unsigned int cursor = 0; - int start = 0; - int end = xbt_dynar_length(mc_global_variables) - 1; - global_variable_t current_var; - int var_found; + if(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){ - while(start <= end){ - cursor = (start + end) / 2; - current_var = (global_variable_t)xbt_dynar_get_as(mc_global_variables, cursor, global_variable_t); - if(current_var->address == var->address){ - var_found = 1; - break; - } - if(current_var->address < address) - start = cursor + 1; - if(current_var->address > address) - end = cursor - 1; - } + xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var); - if(var_found) - xbt_dynar_remove_at(mc_global_variables, cursor, NULL); + }else{ - } - - MC_UNSET_RAW_MEM; - - if(raw_mem_set) - MC_SET_RAW_MEM; -} - -static size_t data_bss_ignore_size(void *address){ - unsigned int cursor = 0; - int start = 0; - int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1; - mc_data_bss_ignore_variable_t var; + unsigned int cursor = 0; + int start = 0; + int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1; + mc_data_bss_ignore_variable_t current_var = NULL; + + while(start <= end){ + cursor = (start + end) / 2; + current_var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t); + if(strcmp(current_var->name, name) == 0){ + data_bss_ignore_variable_free(var); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return; + }else if(strcmp(current_var->name, name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } - while(start <= end){ - cursor = (start + end) / 2; - var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t); - if(var->address == address) - return var->size; - if(var->address < address){ - if((void *)((char *)var->address + var->size) > address) - return (char *)var->address + var->size - (char*)address; + if(strcmp(current_var->name, name) < 0) + xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor + 1, &var); else - start = cursor + 1; + xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor, &var); + } - if(var->address > address) - end = cursor - 1; } - return 0; -} - -void stack_ignore_variable_free(mc_stack_ignore_variable_t v){ - xbt_free(v->var_name); - xbt_free(v->frame); - xbt_free(v); -} - -void stack_ignore_variable_free_voidp(void *v){ - stack_ignore_variable_free((mc_stack_ignore_variable_t) * (void **) v); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; } -void MC_ignore_stack(const char *var_name, const char *frame_name){ +void MC_ignore_local_variable(const char *var_name, const char *frame_name){ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); MC_SET_RAW_MEM; - if(mc_stack_comparison_ignore == NULL) - mc_stack_comparison_ignore = xbt_dynar_new(sizeof(mc_stack_ignore_variable_t), stack_ignore_variable_free_voidp); - - mc_stack_ignore_variable_t var = NULL; - var = xbt_new0(s_mc_stack_ignore_variable_t, 1); - var->var_name = strdup(var_name); - var->frame = strdup(frame_name); - - if(xbt_dynar_is_empty(mc_stack_comparison_ignore)){ - - xbt_dynar_insert_at(mc_stack_comparison_ignore, 0, &var); - - }else{ - + if(mc_local_variables_libsimgrid){ unsigned int cursor = 0; - int start = 0; - int end = xbt_dynar_length(mc_stack_comparison_ignore) - 1; - mc_stack_ignore_variable_t current_var = NULL; - - while(start <= end){ - cursor = (start + end) / 2; - current_var = (mc_stack_ignore_variable_t)xbt_dynar_get_as(mc_stack_comparison_ignore, cursor, mc_stack_ignore_variable_t); - if(strcmp(current_var->frame, frame_name) == 0){ - if(strcmp(current_var->var_name, var_name) == 0){ - stack_ignore_variable_free(var); - MC_UNSET_RAW_MEM; - if(raw_mem_set) - MC_SET_RAW_MEM; - return; + dw_variable_t current_var; + int start, end; + if(strcmp(frame_name, "*") == 0){ /* Remove variable in all frames */ + xbt_dict_cursor_t dict_cursor; + char *current_frame_name; + dw_frame_t frame; + xbt_dict_foreach(mc_local_variables_libsimgrid, dict_cursor, current_frame_name, frame){ + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + while(start <= end){ + cursor = (start + end) / 2; + current_var = (dw_variable_t)xbt_dynar_get_as(frame->variables, cursor, dw_variable_t); + if(strcmp(current_var->name, var_name) == 0){ + xbt_dynar_remove_at(frame->variables, cursor, NULL); + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + }else if(strcmp(current_var->name, var_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + } + xbt_dict_foreach(mc_local_variables_binary, dict_cursor, current_frame_name, frame){ + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + while(start <= end){ + cursor = (start + end) / 2; + current_var = (dw_variable_t)xbt_dynar_get_as(frame->variables, cursor, dw_variable_t); + if(strcmp(current_var->name, var_name) == 0){ + xbt_dynar_remove_at(frame->variables, cursor, NULL); + start = 0; + end = xbt_dynar_length(frame->variables) - 1; + }else if(strcmp(current_var->name, var_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } } - if(strcmp(current_var->var_name, var_name) < 0) + } + }else{ + xbt_dynar_t variables_list = ((dw_frame_t)xbt_dict_get_or_null(mc_local_variables_libsimgrid, frame_name))->variables; + start = 0; + end = xbt_dynar_length(variables_list) - 1; + while(start <= end){ + cursor = (start + end) / 2; + current_var = (dw_variable_t)xbt_dynar_get_as(variables_list, cursor, dw_variable_t); + if(strcmp(current_var->name, var_name) == 0){ + xbt_dynar_remove_at(variables_list, cursor, NULL); + start = 0; + end = xbt_dynar_length(variables_list) - 1; + }else if(strcmp(current_var->name, var_name) < 0){ start = cursor + 1; - if(strcmp(current_var->var_name, var_name) > 0) + }else{ end = cursor - 1; + } } - if(strcmp(current_var->frame, frame_name) < 0) - start = cursor + 1; - if(strcmp(current_var->frame, frame_name) > 0) - end = cursor - 1; - } - - if(strcmp(current_var->frame, frame_name) < 0) - xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor + 1, &var); - else - xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor, &var); + } + }else{ - } + if(mc_stack_comparison_ignore == NULL) + mc_stack_comparison_ignore = xbt_dynar_new(sizeof(mc_stack_ignore_variable_t), stack_ignore_variable_free_voidp); + + mc_stack_ignore_variable_t var = NULL; + var = xbt_new0(s_mc_stack_ignore_variable_t, 1); + var->var_name = strdup(var_name); + var->frame = strdup(frame_name); + + if(xbt_dynar_is_empty(mc_stack_comparison_ignore)){ - /* Remove variable from mc_local_variables */ + xbt_dynar_insert_at(mc_stack_comparison_ignore, 0, &var); - if(mc_local_variables != NULL){ + }else{ + + unsigned int cursor = 0; + int start = 0; + int end = xbt_dynar_length(mc_stack_comparison_ignore) - 1; + mc_stack_ignore_variable_t current_var = NULL; + + while(start <= end){ + cursor = (start + end) / 2; + current_var = (mc_stack_ignore_variable_t)xbt_dynar_get_as(mc_stack_comparison_ignore, cursor, mc_stack_ignore_variable_t); + if(strcmp(current_var->frame, frame_name) == 0){ + if(strcmp(current_var->var_name, var_name) == 0){ + stack_ignore_variable_free(var); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return; + }else if(strcmp(current_var->var_name, var_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + }else if(strcmp(current_var->frame, frame_name) < 0){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } - if(strcmp(frame_name, "*") != 0){ - dw_frame_t frame = xbt_dict_get_or_null(mc_local_variables, frame_name); - if(frame != NULL) - xbt_dict_remove(frame->variables, var_name); + if(strcmp(current_var->frame, frame_name) == 0){ + if(strcmp(current_var->var_name, var_name) < 0){ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor + 1, &var); + }else{ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor, &var); + } + }else if(strcmp(current_var->frame, frame_name) < 0){ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor + 1, &var); + }else{ + xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor, &var); + } } - } - MC_UNSET_RAW_MEM; - - if(raw_mem_set) - MC_SET_RAW_MEM; + if(!raw_mem_set) + MC_UNSET_RAW_MEM; } @@ -1138,6 +1575,7 @@ void MC_new_stack_area(void *stack, char *name, void* context, size_t size){ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); MC_SET_RAW_MEM; + if(stacks_areas == NULL) stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL); @@ -1149,864 +1587,829 @@ void MC_new_stack_area(void *stack, char *name, void* context, size_t size){ region->size = size; region->block = ((char*)stack - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1; xbt_dynar_push(stacks_areas, ®ion); - - MC_UNSET_RAW_MEM; - if(raw_mem_set) - MC_SET_RAW_MEM; + if(!raw_mem_set) + MC_UNSET_RAW_MEM; } -/************ DWARF ***********/ +void MC_ignore(void *addr, size_t size){ -xbt_dict_t MC_get_location_list(const char *elf_file){ + int raw_mem_set= (mmalloc_get_current_heap() == raw_heap); - char *command = bprintf("objdump -Wo %s", elf_file); + MC_SET_RAW_MEM; - FILE *fp = popen(command, "r"); + if(mc_checkpoint_ignore == NULL) + mc_checkpoint_ignore = xbt_dynar_new(sizeof(mc_checkpoint_ignore_region_t), checkpoint_ignore_region_free_voidp); - if(fp == NULL){ - perror("popen for objdump failed"); - xbt_abort(); + mc_checkpoint_ignore_region_t region = xbt_new0(s_mc_checkpoint_ignore_region_t, 1); + region->addr = addr; + region->size = size; + + if(xbt_dynar_is_empty(mc_checkpoint_ignore)){ + xbt_dynar_push(mc_checkpoint_ignore, ®ion); + }else{ + + unsigned int cursor = 0; + int start = 0; + int end = xbt_dynar_length(mc_checkpoint_ignore) -1; + mc_checkpoint_ignore_region_t current_region = NULL; + + while(start <= end){ + cursor = (start + end) / 2; + current_region = (mc_checkpoint_ignore_region_t)xbt_dynar_get_as(mc_checkpoint_ignore, cursor, mc_checkpoint_ignore_region_t); + if(current_region->addr == addr){ + if(current_region->size == size){ + checkpoint_ignore_region_free(region); + if(!raw_mem_set) + MC_UNSET_RAW_MEM; + return; + }else if(current_region->size < size){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + }else if(current_region->addr < addr){ + start = cursor + 1; + }else{ + end = cursor - 1; + } + } + + if(current_region->addr == addr){ + if(current_region->size < size){ + xbt_dynar_insert_at(mc_checkpoint_ignore, cursor + 1, ®ion); + }else{ + xbt_dynar_insert_at(mc_checkpoint_ignore, cursor, ®ion); + } + }else if(current_region->addr < addr){ + xbt_dynar_insert_at(mc_checkpoint_ignore, cursor + 1, ®ion); + }else{ + xbt_dynar_insert_at(mc_checkpoint_ignore, cursor, ®ion); + } } - int debug = 0; /*Detect if the program has been compiled with -g */ + if(!raw_mem_set) + MC_UNSET_RAW_MEM; +} - xbt_dict_t location_list = xbt_dict_new_homogeneous(NULL); - char *line = NULL, *loc_expr = NULL; - ssize_t read; - size_t n = 0; - int cursor_remove; - xbt_dynar_t split = NULL; +/******************************* Initialisation of MC *******************************/ +/*********************************************************************************/ - while ((read = xbt_getline(&line, &n, fp)) != -1) { +static void MC_dump_ignored_local_variables(void){ - /* Wipeout the new line character */ - line[read - 1] = '\0'; + if(mc_stack_comparison_ignore == NULL || xbt_dynar_is_empty(mc_stack_comparison_ignore)) + return; - xbt_str_trim(line, NULL); - - if(n == 0) - continue; + unsigned int cursor = 0; + mc_stack_ignore_variable_t current_var; - if(strlen(line) == 0) - continue; + xbt_dynar_foreach(mc_stack_comparison_ignore, cursor, current_var){ + MC_ignore_local_variable(current_var->var_name, current_var->frame); + } - if(debug == 0){ + xbt_dynar_free(&mc_stack_comparison_ignore); + mc_stack_comparison_ignore = NULL; + +} - if(strncmp(line, elf_file, strlen(elf_file)) == 0) - continue; - - if(strncmp(line, "Contents", 8) == 0) - continue; +static void MC_dump_ignored_global_variables(void){ - if(strncmp(line, "Offset", 6) == 0){ - debug = 1; - continue; - } - } + if(mc_data_bss_comparison_ignore == NULL || xbt_dynar_is_empty(mc_data_bss_comparison_ignore)) + return; - if(debug == 0){ - XBT_INFO("Your program must be compiled with -g"); - xbt_abort(); - } + unsigned int cursor = 0; + mc_data_bss_ignore_variable_t current_var; - xbt_dynar_t loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL); + xbt_dynar_foreach(mc_data_bss_comparison_ignore, cursor, current_var){ + MC_ignore_global_variable(current_var->name); + } - xbt_str_strip_spaces(line); - split = xbt_str_split(line, " "); + xbt_dynar_free(&mc_data_bss_comparison_ignore); + mc_data_bss_comparison_ignore = NULL; - while(read != -1 && strcmp("lowpc = strtoul((char *)xbt_dynar_get_as(split, 1, char *), NULL, 16); - new_entry->highpc = strtoul((char *)xbt_dynar_get_as(split, 2, char *), NULL, 16); - - cursor_remove =0; - while(cursor_remove < 3){ - xbt_dynar_remove_at(split, 0, NULL); - cursor_remove++; - } +} - loc_expr = xbt_str_join(split, " "); - xbt_str_ltrim(loc_expr, "("); - xbt_str_rtrim(loc_expr, ")"); - new_entry->location = get_location(NULL, loc_expr); +void MC_init(){ - xbt_dynar_push(loclist, &new_entry); + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + compare = 0; - xbt_dynar_free(&split); - free(loc_expr); + /* Initialize the data structures that must be persistent across every + iteration of the model-checker (in RAW memory) */ - read = xbt_getline(&line, &n, fp); - if(read != -1){ - line[read - 1] = '\0'; - xbt_str_strip_spaces(line); - split = xbt_str_split(line, " "); - } + MC_SET_RAW_MEM; - } + MC_init_memory_map_info(); + + mc_local_variables_libsimgrid = xbt_dict_new_homogeneous(NULL); + mc_local_variables_binary = xbt_dict_new_homogeneous(NULL); + mc_global_variables_libsimgrid = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp); + mc_global_variables_binary = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp); + mc_variables_type_libsimgrid = xbt_dict_new_homogeneous(NULL); + mc_variables_type_binary = xbt_dict_new_homogeneous(NULL); + XBT_INFO("Get debug information ..."); - char *key = bprintf("%d", (int)strtoul((char *)xbt_dynar_get_as(split, 0, char *), NULL, 16)); - xbt_dict_set(location_list, key, loclist, NULL); - xbt_free(key); - - xbt_dynar_free(&split); + /* Get local variables in binary for state equality detection */ + xbt_dict_t binary_location_list = MC_dwarf_get_location_list(xbt_binary_name); + MC_dwarf_get_variables(xbt_binary_name, binary_location_list, &mc_local_variables_binary, &mc_global_variables_binary, &mc_variables_type_binary); - } + /* Get local variables in libsimgrid for state equality detection */ + xbt_dict_t libsimgrid_location_list = MC_dwarf_get_location_list(libsimgrid_path); + MC_dwarf_get_variables(libsimgrid_path, libsimgrid_location_list, &mc_local_variables_libsimgrid, &mc_global_variables_libsimgrid, &mc_variables_type_libsimgrid); - xbt_free(line); - xbt_free(command); - pclose(fp); + xbt_dict_free(&libsimgrid_location_list); + xbt_dict_free(&binary_location_list); - return location_list; -} + XBT_INFO("Get debug information done !"); -static dw_frame_t get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){ + /* Remove variables ignored before getting list of variables */ + MC_dump_ignored_local_variables(); + MC_dump_ignored_global_variables(); + + /* Get .plt section (start and end addresses) for data libsimgrid and data program comparison */ + MC_get_libsimgrid_plt_section(); + MC_get_binary_plt_section(); - xbt_dict_cursor_t cursor = NULL; - char *name; - dw_frame_t res; + /* Init parmap */ + parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT); - xbt_dict_foreach(all_variables, cursor, name, res) { - if(offset >= res->start && offset < res->end){ - xbt_dict_cursor_free(&cursor); - return res; - } - } + MC_UNSET_RAW_MEM; - xbt_dict_cursor_free(&cursor); - return NULL; + /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */ + MC_ignore_local_variable("e", "*"); + MC_ignore_local_variable("__ex_cleanup", "*"); + MC_ignore_local_variable("__ex_mctx_en", "*"); + MC_ignore_local_variable("__ex_mctx_me", "*"); + MC_ignore_local_variable("__xbt_ex_ctx_ptr", "*"); + MC_ignore_local_variable("_log_ev", "*"); + MC_ignore_local_variable("_throw_ctx", "*"); + MC_ignore_local_variable("ctx", "*"); + + MC_ignore_local_variable("next_context", "smx_ctx_sysv_suspend_serial"); + MC_ignore_local_variable("i", "smx_ctx_sysv_suspend_serial"); + + /* Ignore local variable about time used for tracing */ + MC_ignore_local_variable("start_time", "*"); + + MC_ignore_global_variable("mc_comp_times"); + MC_ignore_global_variable("mc_snapshot_comparison_time"); + MC_ignore_global_variable("mc_time"); + MC_ignore_global_variable("smpi_current_rank"); + MC_ignore_global_variable("counter"); /* Static variable used for tracing */ + MC_ignore_global_variable("maestro_stack_start"); + MC_ignore_global_variable("maestro_stack_end"); + + MC_ignore_heap(&(simix_global->process_to_run), sizeof(simix_global->process_to_run)); + MC_ignore_heap(&(simix_global->process_that_ran), sizeof(simix_global->process_that_ran)); + MC_ignore_heap(simix_global->process_to_run, sizeof(*(simix_global->process_to_run))); + MC_ignore_heap(simix_global->process_that_ran, sizeof(*(simix_global->process_that_ran))); + smx_process_t process; + xbt_swag_foreach(process, simix_global->process_list){ + MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup)); + } + + if(raw_mem_set) + MC_SET_RAW_MEM; + } -void MC_get_local_variables(const char *elf_file, xbt_dict_t location_list, xbt_dict_t *all_variables){ +static void MC_init_dot_output(){ /* FIXME : more colors */ - char *command = bprintf("objdump -Wi %s", elf_file); + colors[0] = "blue"; + colors[1] = "red"; + colors[2] = "green3"; + colors[3] = "goldenrod"; + colors[4] = "brown"; + colors[5] = "purple"; + colors[6] = "magenta"; + colors[7] = "turquoise4"; + colors[8] = "gray25"; + colors[9] = "forestgreen"; + colors[10] = "hotpink"; + colors[11] = "lightblue"; + colors[12] = "tan"; + + dot_output = fopen(_sg_mc_dot_output_file, "w"); - FILE *fp = popen(command, "r"); + if(dot_output == NULL){ + perror("Error open dot output file"); + xbt_abort(); + } - if(fp == NULL) - perror("popen for objdump failed"); + fprintf(dot_output, "digraph graphname{\n fixedsize=true; rankdir=TB; ranksep=.25; edge [fontsize=12]; node [fontsize=10, shape=circle,width=.5 ]; graph [resolution=20, fontsize=10];\n"); - char *line = NULL, *origin, *abstract_origin, *current_frame = NULL; - ssize_t read =0; - size_t n = 0; - int valid_variable = 1; - char *node_type = NULL, *location_type = NULL, *variable_name = NULL, *loc_expr = NULL; - xbt_dynar_t split = NULL, split2 = NULL; +} - xbt_dict_t variables_origin = xbt_dict_new_homogeneous(NULL); - xbt_dict_t subprograms_origin = xbt_dict_new_homogeneous(NULL); - char *subprogram_name = NULL, *subprogram_start = NULL, *subprogram_end = NULL; - int new_frame = 0, new_variable = 0; - dw_frame_t variable_frame, subroutine_frame = NULL; +/******************************* Core of MC *******************************/ +/**************************************************************************/ - read = xbt_getline(&line, &n, fp); +void MC_do_the_modelcheck_for_real() { - while (read != -1) { + MC_SET_RAW_MEM; + mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1); + MC_UNSET_RAW_MEM; + + if (!_sg_mc_property_file || _sg_mc_property_file[0]=='\0') { + if (mc_reduce_kind==e_mc_reduce_unset) + mc_reduce_kind=e_mc_reduce_dpor; - if(n == 0){ - read = xbt_getline(&line, &n, fp); - continue; - } - - /* Wipeout the new line character */ - line[read - 1] = '\0'; - - if(strlen(line) == 0){ - read = xbt_getline(&line, &n, fp); - continue; - } + XBT_INFO("Check a safety property"); + MC_modelcheck_safety(); - xbt_str_ltrim(line, NULL); - xbt_str_strip_spaces(line); - - if(line[0] != '<'){ - read = xbt_getline(&line, &n, fp); - continue; - } - - xbt_dynar_free(&split); - split = xbt_str_split(line, " "); + } else { - /* Get node type */ - node_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *); + if (mc_reduce_kind==e_mc_reduce_unset) + mc_reduce_kind=e_mc_reduce_none; - if(strcmp(node_type, "(DW_TAG_subprogram)") == 0){ /* New frame */ + XBT_INFO("Check the liveness property %s",_sg_mc_property_file); + MC_automaton_load(_sg_mc_property_file); + MC_modelcheck_liveness(); + } +} - dw_frame_t frame = NULL; +void MC_modelcheck_safety(void) +{ + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - strtok(xbt_dynar_get_as(split, 0, char *), "<"); - subprogram_start = strdup(strtok(NULL, "<")); - xbt_str_rtrim(subprogram_start, ">:"); + /* Check if MC is already initialized */ + if (initial_state_safety) + return; - read = xbt_getline(&line, &n, fp); - - while(read != -1){ + mc_time = xbt_new0(double, simix_process_maxpid); - if(n == 0){ - read = xbt_getline(&line, &n, fp); - continue; - } + /* mc_time refers to clock for each process -> ignore it for heap comparison */ + MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double)); - /* Wipeout the new line character */ - line[read - 1] = '\0'; - - if(strlen(line) == 0){ - read = xbt_getline(&line, &n, fp); - continue; - } - - xbt_dynar_free(&split); - xbt_str_rtrim(line, NULL); - xbt_str_strip_spaces(line); - split = xbt_str_split(line, " "); - - node_type = xbt_dynar_get_as(split, 1, char *); - - if(strncmp(node_type, "DW_AT_", 6) != 0) - break; - - if(strcmp(node_type, "DW_AT_sibling") == 0){ + /* Initialize the data structures that must be persistent across every + iteration of the model-checker (in RAW memory) */ + + MC_SET_RAW_MEM; - subprogram_end = strdup(xbt_dynar_get_as(split, 3, char*)); - xbt_str_ltrim(subprogram_end, "<0x"); - xbt_str_rtrim(subprogram_end, ">"); - - }else if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){ /* Frame already in dict */ - - new_frame = 0; - abstract_origin = strdup(xbt_dynar_get_as(split, 2, char*)); - xbt_str_ltrim(abstract_origin, "<0x"); - xbt_str_rtrim(abstract_origin, ">"); - subprogram_name = (char *)xbt_dict_get_or_null(subprograms_origin, abstract_origin); - frame = xbt_dict_get_or_null(*all_variables, subprogram_name); - xbt_free(abstract_origin); + /* Initialize statistics */ + mc_stats = xbt_new0(s_mc_stats_t, 1); + mc_stats->state_size = 1; - }else if(strcmp(node_type, "DW_AT_name") == 0){ + /* Create exploration stack */ + mc_stack_safety = xbt_fifo_new(); - new_frame = 1; - xbt_free(current_frame); - frame = xbt_new0(s_dw_frame_t, 1); - frame->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *)); - frame->variables = xbt_dict_new_homogeneous(NULL); - frame->frame_base = xbt_new0(s_dw_location_t, 1); - current_frame = strdup(frame->name); + if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) + MC_init_dot_output(); - xbt_dict_set(subprograms_origin, subprogram_start, frame->name, NULL); - - }else if(strcmp(node_type, "DW_AT_frame_base") == 0){ + MC_UNSET_RAW_MEM; - location_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *); + if(_sg_mc_visited > 0){ + MC_init(); + }else{ + MC_SET_RAW_MEM; + MC_init_memory_map_info(); + MC_get_libsimgrid_plt_section(); + MC_get_binary_plt_section(); + MC_UNSET_RAW_MEM; + } - if(strcmp(location_type, "list)") == 0){ /* Search location in location list */ + MC_dpor_init(); - frame->frame_base = get_location(location_list, xbt_dynar_get_as(split, 3, char *)); - - }else{ - - xbt_str_strip_spaces(line); - split2 = xbt_str_split(line, "("); - xbt_dynar_remove_at(split2, 0, NULL); - loc_expr = xbt_str_join(split2, " "); - xbt_str_rtrim(loc_expr, ")"); - frame->frame_base = get_location(NULL, loc_expr); - xbt_dynar_free(&split2); - xbt_free(loc_expr); + MC_SET_RAW_MEM; + /* Save the initial state */ + initial_state_safety = xbt_new0(s_mc_global_t, 1); + initial_state_safety->snapshot = MC_take_snapshot(0); + MC_UNSET_RAW_MEM; - } - - }else if(strcmp(node_type, "DW_AT_low_pc") == 0){ - - if(frame != NULL) - frame->low_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); + MC_dpor(); - }else if(strcmp(node_type, "DW_AT_high_pc") == 0){ + if(raw_mem_set) + MC_SET_RAW_MEM; - if(frame != NULL) - frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); + xbt_abort(); + //MC_exit(); +} - }else if(strcmp(node_type, "DW_AT_MIPS_linkage_name:") == 0){ +void MC_modelcheck_liveness(){ - xbt_free(frame->name); - xbt_free(current_frame); - frame->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *)); - current_frame = strdup(frame->name); - xbt_dict_set(subprograms_origin, subprogram_start, frame->name, NULL); + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - } + MC_init(); - read = xbt_getline(&line, &n, fp); + mc_time = xbt_new0(double, simix_process_maxpid); - } + /* mc_time refers to clock for each process -> ignore it for heap comparison */ + MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double)); - if(new_frame == 1){ - frame->start = strtoul(subprogram_start, NULL, 16); - if(subprogram_end != NULL) - frame->end = strtoul(subprogram_end, NULL, 16); - xbt_dict_set(*all_variables, frame->name, frame, NULL); - } - - xbt_free(subprogram_start); - xbt_free(subprogram_end); - subprogram_end = NULL; - - - }else if(strcmp(node_type, "(DW_TAG_variable)") == 0){ /* New variable */ - - dw_local_variable_t var = NULL; - - strtok(xbt_dynar_get_as(split, 0, char *), "<"); - origin = strdup(strtok(NULL, "<")); - xbt_str_rtrim(origin, ">:"); - - read = xbt_getline(&line, &n, fp); - - while(read != -1){ + MC_SET_RAW_MEM; + + /* Initialize statistics */ + mc_stats = xbt_new0(s_mc_stats_t, 1); + mc_stats->state_size = 1; - if(n == 0){ - read = xbt_getline(&line, &n, fp); - continue; - } + /* Create exploration stack */ + mc_stack_liveness = xbt_fifo_new(); - /* Wipeout the new line character */ - line[read - 1] = '\0'; + /* Create the initial state */ + initial_state_liveness = xbt_new0(s_mc_global_t, 1); - if(strlen(line) == 0){ - read = xbt_getline(&line, &n, fp); - continue; - } - - xbt_dynar_free(&split); - xbt_str_rtrim(line, NULL); - xbt_str_strip_spaces(line); - split = xbt_str_split(line, " "); + if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')) + MC_init_dot_output(); - node_type = xbt_dynar_get_as(split, 1, char *); - - if(strncmp(node_type, "DW_AT_", 6) != 0) - break; - - if(strcmp(node_type, "DW_AT_name") == 0){ - - new_variable = 1; - var = xbt_new0(s_dw_local_variable_t, 1); - var->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *)); + MC_UNSET_RAW_MEM; - xbt_dict_set(variables_origin, origin, var->name, NULL); - - }else if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){ + MC_ddfs_init(); - new_variable = 0; - abstract_origin = xbt_dynar_get_as(split, 2, char *); - xbt_str_ltrim(abstract_origin, "<0x"); - xbt_str_rtrim(abstract_origin, ">"); - - variable_name = (char *)xbt_dict_get_or_null(variables_origin, abstract_origin); - variable_frame = get_frame_by_offset(*all_variables, strtoul(abstract_origin, NULL, 16)); - var = xbt_dict_get_or_null(variable_frame->variables, variable_name); + /* We're done */ + MC_print_statistics(mc_stats); + xbt_free(mc_time); - }else if(strcmp(node_type, "DW_AT_location") == 0){ + if(raw_mem_set) + MC_SET_RAW_MEM; - if(valid_variable == 1 && var != NULL){ +} - var->location = xbt_new0(s_dw_location_t, 1); - location_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *); +void MC_exit(void) +{ + xbt_free(mc_time); + MC_memory_exit(); + //xbt_abort(); +} - if(strcmp(location_type, "list)") == 0){ /* Search location in location list */ +int SIMIX_pre_mc_random(smx_simcall_t simcall, int min, int max){ - var->location = get_location(location_list, xbt_dynar_get_as(split, 3, char *)); - - }else{ - - xbt_str_strip_spaces(line); - split2 = xbt_str_split(line, "("); - xbt_dynar_remove_at(split2, 0, NULL); - loc_expr = xbt_str_join(split2, " "); - xbt_str_rtrim(loc_expr, ")"); - var->location = get_location(NULL, loc_expr); - xbt_dynar_free(&split2); - xbt_free(loc_expr); + return simcall->mc_value; +} - } - } - - }else if(strcmp(node_type, "DW_AT_external") == 0){ +int MC_random(int min, int max) +{ + /*FIXME: return mc_current_state->executed_transition->random.value;*/ + return simcall_mc_random(min, max); +} - valid_variable = 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; - read = xbt_getline(&line, &n, fp); - - } + 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); + } + } +} - if(new_variable == 1 && valid_variable == 1){ - - variable_frame = xbt_dict_get_or_null(*all_variables, current_frame); - xbt_dict_set(variable_frame->variables, var->name, var, NULL); +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; +} - valid_variable = 1; - new_variable = 0; +/** + * \brief Re-executes from the state at position start all the transitions indicated by + * a given model-checker stack. + * \param stack The stack with the transitions to execute. + * \param start Start index to begin the re-execution. + */ +void MC_replay(xbt_fifo_t stack, int start) +{ + int raw_mem = (mmalloc_get_current_heap() == raw_heap); - }else if(strcmp(node_type, "(DW_TAG_inlined_subroutine)") == 0){ + int value, i = 1, count = 1; + char *req_str; + smx_simcall_t req = NULL, saved_req = NULL; + xbt_fifo_item_t item, start_item; + mc_state_t state; + smx_process_t process = NULL; - strtok(xbt_dynar_get_as(split, 0, char *), "<"); - origin = strdup(strtok(NULL, "<")); - xbt_str_rtrim(origin, ">:"); + XBT_DEBUG("**** Begin Replay ****"); - read = xbt_getline(&line, &n, fp); + if(start == -1){ + /* Restore the initial state */ + MC_restore_snapshot(initial_state_safety->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; + } - while(read != -1){ + start_item = xbt_fifo_get_last_item(stack); + if(start != -1){ + while (i != start){ + start_item = xbt_fifo_get_prev_item(start_item); + i++; + } + } - /* Wipeout the new line character */ - line[read - 1] = '\0'; + MC_SET_RAW_MEM; + xbt_dict_reset(first_enabled_state); + xbt_swag_foreach(process, simix_global->process_list){ + if(MC_process_is_enabled(process)){ + char *key = bprintf("%lu", process->pid); + char *data = bprintf("%d", count); + xbt_dict_set(first_enabled_state, key, data, NULL); + xbt_free(key); + } + } + MC_UNSET_RAW_MEM; + - if(n == 0){ - read = xbt_getline(&line, &n, fp); - continue; - } + /* Traverse the stack from the state at position start and re-execute the transitions */ + for (item = start_item; + item != xbt_fifo_get_first_item(stack); + item = xbt_fifo_get_prev_item(item)) { - if(strlen(line) == 0){ - read = xbt_getline(&line, &n, fp); - continue; + state = (mc_state_t) xbt_fifo_get_item_content(item); + saved_req = MC_state_get_executed_request(state, &value); + + MC_SET_RAW_MEM; + char *key = bprintf("%lu", saved_req->issuer->pid); + xbt_dict_remove(first_enabled_state, key); + xbt_free(key); + MC_UNSET_RAW_MEM; + + 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(); + + count++; + + MC_SET_RAW_MEM; + /* Insert in dict all enabled processes */ + xbt_swag_foreach(process, simix_global->process_list){ + if(MC_process_is_enabled(process) /*&& !MC_state_process_is_done(state, process)*/){ + char *key = bprintf("%lu", process->pid); + if(xbt_dict_get_or_null(first_enabled_state, key) == NULL){ + char *data = bprintf("%d", count); + xbt_dict_set(first_enabled_state, key, data, NULL); } + xbt_free(key); + } + } + MC_UNSET_RAW_MEM; + + /* Update statistics */ + mc_stats->visited_states++; + mc_stats->executed_transitions++; - xbt_dynar_free(&split); - xbt_str_rtrim(line, NULL); - xbt_str_strip_spaces(line); - split = xbt_str_split(line, " "); - - if(strncmp(xbt_dynar_get_as(split, 1, char *), "DW_AT_", 6) != 0) - break; - - node_type = xbt_dynar_get_as(split, 1, char *); + } - if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){ + XBT_DEBUG("**** End Replay ****"); - origin = xbt_dynar_get_as(split, 2, char *); - xbt_str_ltrim(origin, "<0x"); - xbt_str_rtrim(origin, ">"); - - subprogram_name = (char *)xbt_dict_get_or_null(subprograms_origin, origin); - subroutine_frame = xbt_dict_get_or_null(*all_variables, subprogram_name); - - }else if(strcmp(node_type, "DW_AT_low_pc") == 0){ + if(raw_mem) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + - subroutine_frame->low_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); +} - }else if(strcmp(node_type, "DW_AT_high_pc") == 0){ +void MC_replay_liveness(xbt_fifo_t stack, int all_stack) +{ - subroutine_frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16); - } + initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - read = xbt_getline(&line, &n, fp); - - } + int value; + char *req_str; + smx_simcall_t req = NULL, saved_req = NULL; + xbt_fifo_item_t item; + mc_state_t state; + mc_pair_t pair; + int depth = 1; - }else{ + XBT_DEBUG("**** Begin Replay ****"); - read = xbt_getline(&line, &n, fp); + /* Restore the initial state */ + MC_restore_snapshot(initial_state_liveness->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 */ + if(!initial_state_liveness->raw_mem_set) + MC_UNSET_RAW_MEM; - } - - xbt_dynar_free(&split); - xbt_free(line); - xbt_free(command); - pclose(fp); - -} + if(all_stack){ -static dw_location_t get_location(xbt_dict_t location_list, char *expr){ + item = xbt_fifo_get_last_item(stack); - dw_location_t loc = xbt_new0(s_dw_location_t, 1); + while(depth <= xbt_fifo_size(stack)){ - if(location_list != NULL){ - - char *key = bprintf("%d", (int)strtoul(expr, NULL, 16)); - loc->type = e_dw_loclist; - loc->location.loclist = (xbt_dynar_t)xbt_dict_get_or_null(location_list, key); - if(loc->location.loclist == NULL) - XBT_INFO("Key not found in loclist"); - xbt_free(key); - return loc; + pair = (mc_pair_t) xbt_fifo_get_item_content(item); + state = (mc_state_t) pair->graph_state; - }else{ + 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(); + } - int cursor = 0; - char *tok = NULL, *tok2 = NULL; + depth++; - xbt_dynar_t tokens1 = xbt_str_split(expr, ";"); - xbt_dynar_t tokens2; + /* Update statistics */ + mc_stats->visited_pairs++; + mc_stats->executed_transitions++; - loc->type = e_dw_compose; - loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL); + item = xbt_fifo_get_prev_item(item); + } - while(cursor < xbt_dynar_length(tokens1)){ + }else{ - tok = xbt_dynar_get_as(tokens1, cursor, char*); - tokens2 = xbt_str_split(tok, " "); - tok2 = xbt_dynar_get_as(tokens2, 0, char*); + /* 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_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(strncmp(tok2, "DW_OP_reg", 9) == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_register; - new_element->location.reg = atoi(strtok(tok2, "DW_OP_reg")); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok2, "DW_OP_fbreg:") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_fbregister_op; - new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strncmp(tok2, "DW_OP_breg", 10) == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_bregister_op; - new_element->location.breg_op.reg = atoi(strtok(tok2, "DW_OP_breg")); - new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strncmp(tok2, "DW_OP_lit", 9) == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_lit; - new_element->location.lit = atoi(strtok(tok2, "DW_OP_lit")); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok2, "DW_OP_piece:") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_piece; - new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); - /*if(strlen(xbt_dynar_get_as(tokens2, 1, char*)) > 1) - new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, 1, char*)); - else - new_element->location.piece = xbt_dynar_get_as(tokens2, 1, char*)[0] - '0';*/ - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok2, "DW_OP_plus_uconst:") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_plus_uconst; - new_element->location.plus_uconst = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char *)); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok, "DW_OP_abs") == 0 || - strcmp(tok, "DW_OP_and") == 0 || - strcmp(tok, "DW_OP_div") == 0 || - strcmp(tok, "DW_OP_minus") == 0 || - strcmp(tok, "DW_OP_mod") == 0 || - strcmp(tok, "DW_OP_mul") == 0 || - strcmp(tok, "DW_OP_neg") == 0 || - strcmp(tok, "DW_OP_not") == 0 || - strcmp(tok, "DW_OP_or") == 0 || - strcmp(tok, "DW_OP_plus") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_arithmetic; - new_element->location.arithmetic = strdup(strtok(tok2, "DW_OP_")); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok, "DW_OP_stack_value") == 0){ - }else if(strcmp(tok2, "DW_OP_deref_size:") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_deref; - new_element->location.deref_size = (unsigned int short) atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)); - /*if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1) - new_element->location.deref_size = atoi(xbt_dynar_get_as(tokens, cursor, char*)); - else - new_element->location.deref_size = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';*/ - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok, "DW_OP_deref") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_deref; - new_element->location.deref_size = sizeof(void *); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok2, "DW_OP_constu:") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_uconstant; - new_element->location.uconstant.bytes = 1; - new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); - /*if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1) - new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens, cursor, char*))); - else - new_element->location.uconstant.value = (unsigned long int)(xbt_dynar_get_as(tokens, cursor, char*)[0] - '0');*/ - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok2, "DW_OP_consts:") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_sconstant; - new_element->location.sconstant.bytes = 1; - new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok2, "DW_OP_const1u:") == 0 || - strcmp(tok2, "DW_OP_const2u:") == 0 || - strcmp(tok2, "DW_OP_const4u:") == 0 || - strcmp(tok2, "DW_OP_const8u:") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_uconstant; - new_element->location.uconstant.bytes = tok2[11] - '0'; - new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); - /*if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1) - new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*)); - else - new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';*/ - xbt_dynar_push(loc->location.compose, &new_element); - }else if(strcmp(tok, "DW_OP_const1s") == 0 || - strcmp(tok, "DW_OP_const2s") == 0 || - strcmp(tok, "DW_OP_const4s") == 0 || - strcmp(tok, "DW_OP_const8s") == 0){ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_sconstant; - new_element->location.sconstant.bytes = tok2[11] - '0'; - new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*))); - xbt_dynar_push(loc->location.compose, &new_element); - }else{ - dw_location_t new_element = xbt_new0(s_dw_location_t, 1); - new_element->type = e_dw_unsupported; - xbt_dynar_push(loc->location.compose, &new_element); + 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(); } - cursor++; - xbt_dynar_free(&tokens2); - - } + depth++; - xbt_dynar_free(&tokens1); + /* Update statistics */ + mc_stats->visited_pairs++; + mc_stats->executed_transitions++; + } + } + + XBT_DEBUG("**** End Replay ****"); + + if(initial_state_liveness->raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + +} + +/** + * \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_safety(xbt_fifo_t stack) +{ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_show_stack_safety(stack); + + if(!_sg_mc_checkpoint){ + + mc_state_t state; + + MC_SET_RAW_MEM; + while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL) + MC_state_delete(state); + MC_UNSET_RAW_MEM; - return loc; - } + if(raw_mem_set) + MC_SET_RAW_MEM; + else + MC_UNSET_RAW_MEM; + } -void print_local_variables(xbt_dict_t list){ +void MC_show_stack_safety(xbt_fifo_t stack) +{ + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + int value; + mc_state_t state; + xbt_fifo_item_t item; + smx_simcall_t req; + char *req_str = NULL; - dw_location_entry_t entry; - dw_location_t location_entry; - unsigned int cursor3 = 0, cursor4 = 0; - xbt_dict_cursor_t cursor = 0, cursor2 = 0; - - char *frame_name, *variable_name; - dw_frame_t current_frame; - dw_local_variable_t current_variable; - - xbt_dict_foreach(list, cursor, frame_name, current_frame){ - fprintf(stderr, "Frame name : %s\n", current_frame->name); - fprintf(stderr, "Location type : %d\n", current_frame->frame_base->type); - xbt_dict_foreach((xbt_dict_t)current_frame->variables, cursor2, variable_name, current_variable){ - fprintf(stderr, "Name : %s\n", current_variable->name); - if(current_variable->location == NULL) - continue; - fprintf(stderr, "Location type : %d\n", current_variable->location->type); - switch(current_variable->location->type){ - case e_dw_loclist : - xbt_dynar_foreach(current_variable->location->location.loclist, cursor3, entry){ - fprintf(stderr, "Lowpc : %lx, Highpc : %lx,", entry->lowpc, entry->highpc); - switch(entry->location->type){ - case e_dw_register : - fprintf(stderr, " Location : in register %d\n", entry->location->location.reg); - break; - case e_dw_bregister_op: - fprintf(stderr, " Location : Add %d to the value in register %d\n", entry->location->location.breg_op.offset, entry->location->location.breg_op.reg); - break; - case e_dw_lit: - fprintf(stderr, "Value already kwnown : %d\n", entry->location->location.lit); - break; - case e_dw_fbregister_op: - fprintf(stderr, " Location : %d bytes from logical frame pointer\n", entry->location->location.fbreg_op); - break; - case e_dw_compose: - fprintf(stderr, " Location :\n"); - xbt_dynar_foreach(entry->location->location.compose, cursor4, location_entry){ - switch(location_entry->type){ - case e_dw_register : - fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg); - break; - case e_dw_bregister_op: - fprintf(stderr, " %d) add %d to the value in register %d\n", cursor4 + 1, location_entry->location.breg_op.offset, location_entry->location.breg_op.reg); - break; - case e_dw_lit: - fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit); - break; - case e_dw_fbregister_op: - fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op); - break; - case e_dw_deref: - fprintf(stderr, " %d) Pop the stack entry and treats it as an address (size of data %d)\n", cursor4 + 1, location_entry->location.deref_size); - break; - case e_dw_arithmetic : - fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic); - break; - case e_dw_piece: - fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece); - break; - case e_dw_uconstant : - fprintf(stderr, "%d) Unsigned constant %lu\n", cursor4 + 1, location_entry->location.uconstant.value); - break; - case e_dw_sconstant : - fprintf(stderr, "%d) Signed constant %lu\n", cursor4 + 1, location_entry->location.sconstant.value); - break; - default : - fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1); - break; - } - } - break; - default: - fprintf(stderr, "Location type not supported\n"); - break; - } - } - break; - case e_dw_compose: - cursor4 = 0; - fprintf(stderr, "Location :\n"); - xbt_dynar_foreach(current_variable->location->location.compose, cursor4, location_entry){ - switch(location_entry->type){ - case e_dw_register : - fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg); - break; - case e_dw_bregister_op: - fprintf(stderr, " %d) add %d to the value in register %d\n", cursor4 + 1, location_entry->location.breg_op.offset, location_entry->location.breg_op.reg); - break; - case e_dw_lit: - fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit); - break; - case e_dw_fbregister_op: - fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op); - break; - case e_dw_deref: - fprintf(stderr, " %d) Pop the stack entry and treats it as an address (size of data %d)\n", cursor4 + 1, location_entry->location.deref_size); - break; - case e_dw_arithmetic : - fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic); - break; - case e_dw_piece: - fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece); - break; - case e_dw_uconstant : - fprintf(stderr, "%d) Unsigned constant %lu\n", cursor4 + 1, location_entry->location.uconstant.value); - break; - case e_dw_sconstant : - fprintf(stderr, "%d) Signed constant %lu\n", cursor4 + 1, location_entry->location.sconstant.value); - break; - default : - fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1); - break; - } - } - break; - default : - fprintf(stderr, "Location type not supported\n"); - break; - } + 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, &value); + if(req){ + req_str = MC_request_to_string(req, value); + XBT_INFO("%s", req_str); + xbt_free(req_str); } } + if(!raw_mem_set) + MC_UNSET_RAW_MEM; } -static void MC_get_global_variables(char *elf_file){ - - FILE *fp; - - char *command = bprintf("objdump -t -j .data -j .bss %s", elf_file); +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(mc_stack_safety); + MC_print_statistics(mc_stats); +} - fp = popen(command, "r"); - if(fp == NULL){ - perror("popen failed"); - xbt_abort(); +void MC_show_stack_liveness(xbt_fifo_t stack){ + int value; + mc_pair_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_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"); + } + } } +} - if(mc_global_variables == NULL) - mc_global_variables = xbt_dynar_new(sizeof(global_variable_t), global_variable_free_voidp); +void MC_dump_stack_liveness(xbt_fifo_t stack){ - char *line = NULL; - ssize_t read; - size_t n = 0; + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - xbt_dynar_t line_tokens = NULL; - unsigned long offset; + mc_pair_t pair; - int type = strcmp(elf_file, xbt_binary_name); /* 0 = binary, other = libsimgrid */ + MC_SET_RAW_MEM; + while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL) + MC_pair_delete(pair); + MC_UNSET_RAW_MEM; - while ((read = xbt_getline(&line, &n, fp)) != -1){ + if(raw_mem_set) + MC_SET_RAW_MEM; - if(n == 0) - continue; +} - /* Wipeout the new line character */ - line[read - 1] = '\0'; - xbt_str_strip_spaces(line); - xbt_str_ltrim(line, NULL); +void MC_print_statistics(mc_stats_t stats) +{ + if(stats->expanded_pairs == 0){ + XBT_INFO("Expanded states = %lu", stats->expanded_states); + XBT_INFO("Visited states = %lu", stats->visited_states); + }else{ + XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs); + XBT_INFO("Visited pairs = %lu", stats->visited_pairs); + } + XBT_INFO("Executed transitions = %lu", stats->executed_transitions); + MC_SET_RAW_MEM; + if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')){ + fprintf(dot_output, "}\n"); + fclose(dot_output); + } + MC_UNSET_RAW_MEM; +} - line_tokens = xbt_str_split(line, NULL); +void MC_assert(int prop) +{ + if (MC_is_active() && !prop){ + XBT_INFO("**************************"); + XBT_INFO("*** PROPERTY NOT VALID ***"); + XBT_INFO("**************************"); + XBT_INFO("Counter-example execution trace:"); + MC_dump_stack_safety(mc_stack_safety); + MC_print_statistics(mc_stats); + xbt_abort(); + } +} - if(xbt_dynar_length(line_tokens) <= 4 || strcmp(xbt_dynar_get_as(line_tokens, 0, char *), "SYMBOL") == 0) - continue; +void MC_cut(void){ + user_max_depth_reached = 1; +} - if((strncmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), "__gcov", 6) == 0) - || (strncmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), "gcov", 4) == 0) - || (strcmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), ".data") == 0) - || (strcmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), ".bss") == 0) - || (strncmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), "stderr", 6) == 0) - || ((size_t)strtoul(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 2, char*), NULL, 16) == 0)) - continue; +void MC_process_clock_add(smx_process_t process, double amount) +{ + mc_time[process->pid] += amount; +} - global_variable_t var = xbt_new0(s_global_variable_t, 1); +double MC_process_clock_get(smx_process_t process) +{ + if(mc_time){ + if(process != NULL) + return mc_time[process->pid]; + else + return -1; + }else{ + return 0; + } +} - if(type == 0){ - var->address = (void *)strtoul(xbt_dynar_get_as(line_tokens, 0, char*), NULL, 16); - }else{ - offset = strtoul(xbt_dynar_get_as(line_tokens, 0, char*), NULL, 16); - var->address = (char *)start_text_libsimgrid+offset; - } +void MC_automaton_load(const char *file){ - var->size = (size_t)strtoul(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 2, char*), NULL, 16); - var->name = strdup(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*)); + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - if(data_bss_ignore_size(var->address) > 0){ - global_variable_free(var); - }else{ - if(xbt_dynar_is_empty(mc_global_variables)){ - xbt_dynar_push(mc_global_variables, &var); - }else{ - unsigned int cursor = 0; - int start = 0; - int end = xbt_dynar_length(mc_global_variables) - 1; - global_variable_t current_var = NULL; - - while(start <= end){ - cursor = (start + end) / 2; - current_var = (global_variable_t)xbt_dynar_get_as(mc_global_variables, cursor, global_variable_t); - if(current_var->address == var->address) - break; - if(current_var->address < var->address) - start = cursor + 1; - if(current_var->address > var->address) - end = cursor - 1; - } - - if(current_var->address < var->address) - xbt_dynar_insert_at(mc_global_variables, cursor + 1, &var); - else - xbt_dynar_insert_at(mc_global_variables, cursor, &var); - } - } + MC_SET_RAW_MEM; - xbt_dynar_free(&line_tokens); + if (_mc_property_automaton == NULL) + _mc_property_automaton = xbt_automaton_new(); + + xbt_automaton_load(_mc_property_automaton,file); - } + MC_UNSET_RAW_MEM; - xbt_free(command); - xbt_free(line); - pclose(fp); + if(raw_mem_set) + MC_SET_RAW_MEM; } -void global_variable_free(global_variable_t v){ - xbt_free(v->name); - xbt_free(v); -} +void MC_automaton_new_propositional_symbol(const char* id, void* fct) { + + int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); + + MC_SET_RAW_MEM; + + if (_mc_property_automaton == NULL) + _mc_property_automaton = xbt_automaton_new(); + + xbt_automaton_propositional_symbol_new(_mc_property_automaton,id,fct); -void global_variable_free_voidp(void *v){ - global_variable_free((global_variable_t) * (void **) v); + MC_UNSET_RAW_MEM; + + if(raw_mem_set) + MC_SET_RAW_MEM; + } + + +