X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/f9372a704b64cdb43772c2072226d494e1c6373a..c08295c26e7710f67045230969a3b5b84c7b6df8:/src/mc/mc_global.c diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c index d137272a49..59a4b7e325 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. */ @@ -7,6 +8,7 @@ #include #include #include +#include #include "simgrid/sg_config.h" #include "../surf/surf_private.h" @@ -17,6 +19,8 @@ #include "xbt/automaton.h" #include "xbt/dict.h" +static void MC_post_process_types(mc_object_info_t info); + XBT_LOG_NEW_CATEGORY(mc, "All MC categories"); XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc, "Logging specific to MC (global)"); @@ -34,9 +38,8 @@ char *_sg_mc_dot_output_file = NULL; int user_max_depth_reached = 0; -extern int _sg_init_status; 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); @@ -50,41 +53,41 @@ 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_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); @@ -110,12 +113,8 @@ int compare; 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; +mc_object_info_t mc_libsimgrid_info = NULL; +mc_object_info_t mc_binary_info = NULL; /* Ignore mechanism */ xbt_dynar_t mc_stack_comparison_ignore; @@ -176,6 +175,33 @@ static void dw_variable_free_voidp(void *t){ dw_variable_free((dw_variable_t) * (void **) t); } +// object_info + +mc_object_info_t MC_new_object_info(void) { + mc_object_info_t res = xbt_new(s_mc_object_info_t, 1); + res->file_name = NULL; + res->start_text = NULL; + res->start_data = NULL; + res->start_bss = NULL; + res->start_plt = NULL; + res->end_plt = NULL; + res->start_got_plt = NULL; + res->end_got_plt = NULL; + res->local_variables = xbt_dict_new_homogeneous(NULL); + res->global_variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp); + res->types = xbt_dict_new_homogeneous(NULL); + return res; +} + +void MC_free_object_info(mc_object_info_t* info) { + xbt_free(&(*info)->file_name); + xbt_dict_free(&(*info)->local_variables); + xbt_dynar_free(&(*info)->global_variables); + xbt_dict_free(&(*info)->types); + xbt_free(info); + info = NULL; +} + /*************************************************************************/ static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr){ @@ -314,9 +340,14 @@ static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr) } +/** @brief Extract the location lists from an ELF file (.debug_loc) + * + * @return A map from the offset in the list (in hexadecimal string) + * into a location list (dynar of dw_location_entry_t). + */ static xbt_dict_t MC_dwarf_get_location_list(const char *elf_file){ - char *command = bprintf("objdump -Wo %s", elf_file); + char *command = bprintf("LANG=C objdump -Wo %s", elf_file); FILE *fp = popen(command, "r"); @@ -371,8 +402,14 @@ static xbt_dict_t MC_dwarf_get_location_list(const char *elf_file){ xbt_str_strip_spaces(line); split = xbt_str_split(line, " "); + char *key = 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); @@ -403,7 +440,6 @@ static xbt_dict_t MC_dwarf_get_location_list(const char *elf_file){ } - 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); @@ -418,6 +454,10 @@ static xbt_dict_t MC_dwarf_get_location_list(const char *elf_file){ return location_list; } +/** \brief Finds a frame (DW_TAG_subprogram) from an DWARF offset in the rangd of this subprogram + * + * The offset can be an offset of a child DW_TAG_variable. + */ static dw_frame_t MC_dwarf_get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){ xbt_dict_cursor_t cursor = NULL; @@ -492,16 +532,24 @@ static int MC_dwarf_get_variable_index(xbt_dynar_t variables, char* var, void *a } +/** \brief Fill DWARf debug infomations (types, frames, variables ...). */ +void MC_dwarf_get_variables(mc_object_info_t info) { + mc_object_info_t result = info; + const char *elf_file = info->file_name; -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_dict_t location_list = MC_dwarf_get_location_list(elf_file); - char *command = bprintf("objdump -Wi %s", elf_file); + char *command = bprintf("LANG=C objdump -Wi %s", elf_file); FILE *fp = popen(command, "r"); if(fp == NULL) perror("popen for objdump failed"); + xbt_dict_t *local_variables = &result->local_variables; + xbt_dynar_t *global_variables = &result->global_variables; + xbt_dict_t *types = &result->types; + 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, @@ -550,6 +598,8 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis node_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *); if(strcmp(node_type, "(DW_TAG_subprogram)") == 0){ /* New frame */ + /* We build/complete a dw_frame_t object + * and append it if necessary to the local_variables dictionnary */ dw_frame_t frame = NULL; @@ -665,6 +715,9 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis }else if(strcmp(node_type, "(DW_TAG_variable)") == 0){ /* New variable */ + /* We build a dw_variable_t object and append it either to + the list of variables of the frame (local variable) + or to the list of global variables (global variables). */ dw_variable_t var = NULL; @@ -742,8 +795,9 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis 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)); + var->address.address = (char *) info->start_text + (long)((void *)strtoul(xbt_dynar_get_as(split2, xbt_dynar_length(split2) - 1, char*), NULL, 16)); else + // Why is it different ? 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); @@ -755,8 +809,9 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis 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)); + var->address.address = (char *) info->start_text + (long)((void *)strtoul(global_address, NULL, 16)); else + // Why is it different ? var->address.address = (void *)strtoul(global_address, NULL, 16); xbt_free(global_address); global_address = NULL; @@ -817,6 +872,7 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis new_variable = 1; }else if(strcmp(node_type, "(DW_TAG_inlined_subroutine)") == 0){ + /* Update the information on the frame (we should duplicate it instead). */ read = xbt_getline(&line, &n, fp); @@ -864,19 +920,18 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis }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)"))){ + /* Create the and add it to the types dictionnary */ + 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) @@ -943,10 +998,11 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis 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->byte_size = size; + // Not relevant: + type->element_count = -1; + type->members = NULL; xbt_dict_set(*types, origin, type, NULL); @@ -1031,9 +1087,11 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis if(member_end && type){ member_end = 0; + // Why are we not simply referencing, the DW_AT_type? dw_type_t member_type = xbt_new0(s_dw_type_t, 1); member_type->name = xbt_strdup(name); - member_type->size = size; + member_type->byte_size = size; + member_type->element_count = -1; member_type->is_pointer_type = is_pointer; member_type->id = (void *)strtoul(origin, NULL, 16); member_type->offset = offset; @@ -1066,7 +1124,8 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis else type->type = e_dw_union_type; type->name = xbt_strdup(name); - type->size = size; + type->byte_size = size; + type->element_count = -1; type->is_pointer_type = is_pointer; type->id = (void *)strtoul(origin, NULL, 16); if(type_origin) @@ -1107,8 +1166,10 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis dw_type_t type = NULL; + // Read DW_TAG_subrange_type children: while(read != -1){ + // Read attributes of the DW_TAG_subrange_type: while(read != -1){ /* Wipeout the new line character */ @@ -1152,8 +1213,8 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis } if(subrange && type){ - type->size = size; - + type->element_count = size; + xbt_free(name); name = NULL; xbt_free(end); @@ -1178,6 +1239,9 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis if(type_origin) type->dw_type_id = xbt_strdup(type_origin); type->members = NULL; + + // Filled in a post processing step: + type-> byte_size = 0; xbt_dict_set(*types, origin, type, NULL); @@ -1213,10 +1277,26 @@ static void MC_dwarf_get_variables(const char *elf_file, xbt_dict_t location_lis xbt_dict_free(&subprograms_origin); xbt_free(line); xbt_free(command); + xbt_dict_free(&location_list); + pclose(fp); - + + MC_post_process_types(info); } +static void MC_post_process_types(mc_object_info_t info) { + xbt_dict_cursor_t cursor; + char *origin; + dw_type_t type; + xbt_dict_foreach(info->types, cursor, origin, type){ + if(type->type==e_dw_array_type) { + xbt_assert(type->dw_type_id, "No base type for array <%p>%s", type->id, type->name); + dw_type_t subtype = xbt_dict_get_or_null(info->types, type->dw_type_id); + xbt_assert(subtype, "Unkown base type for array <%p>%s", type->id, type->name); + type->byte_size = type->element_count*subtype->byte_size; + } + } +} /******************************* Ignore mechanism *******************************/ /*********************************************************************************/ @@ -1375,20 +1455,20 @@ void MC_ignore_global_variable(const char *name){ MC_SET_RAW_MEM; - if(mc_global_variables_libsimgrid){ + if(mc_libsimgrid_info){ unsigned int cursor = 0; dw_variable_t current_var; int start = 0; - int end = xbt_dynar_length(mc_global_variables_libsimgrid) - 1; + int end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1; while(start <= end){ cursor = (start + end) /2; - current_var = (dw_variable_t)xbt_dynar_get_as(mc_global_variables_libsimgrid, cursor, dw_variable_t); + current_var = (dw_variable_t)xbt_dynar_get_as(mc_libsimgrid_info->global_variables, cursor, dw_variable_t); if(strcmp(current_var->name, name) == 0){ - xbt_dynar_remove_at(mc_global_variables_libsimgrid, cursor, NULL); + xbt_dynar_remove_at(mc_libsimgrid_info->global_variables, cursor, NULL); start = 0; - end = xbt_dynar_length(mc_global_variables_libsimgrid) - 1; + end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1; }else if(strcmp(current_var->name, name) < 0){ start = cursor + 1; }else{ @@ -1449,7 +1529,7 @@ void MC_ignore_local_variable(const char *var_name, const char *frame_name){ MC_SET_RAW_MEM; - if(mc_local_variables_libsimgrid){ + if(mc_libsimgrid_info){ unsigned int cursor = 0; dw_variable_t current_var; int start, end; @@ -1457,7 +1537,24 @@ void MC_ignore_local_variable(const char *var_name, const char *frame_name){ 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){ + xbt_dict_foreach(mc_libsimgrid_info->local_variables, 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_binary_info->local_variables, dict_cursor, current_frame_name, frame){ start = 0; end = xbt_dynar_length(frame->variables) - 1; while(start <= end){ @@ -1475,7 +1572,8 @@ void MC_ignore_local_variable(const char *var_name, const char *frame_name){ } } }else{ - xbt_dynar_t variables_list = ((dw_frame_t)xbt_dict_get_or_null(mc_local_variables_libsimgrid, frame_name))->variables; + xbt_dynar_t variables_list = ((dw_frame_t)xbt_dict_get_or_null( + mc_libsimgrid_info->local_variables, frame_name))->variables; start = 0; end = xbt_dynar_length(variables_list) - 1; while(start <= end){ @@ -1672,10 +1770,24 @@ static void MC_dump_ignored_global_variables(void){ } +static void MC_init_debug_info(); +static void MC_init_debug_info() { + XBT_INFO("Get debug information ..."); + + memory_map_t maps = MC_get_memory_map(); + + /* Get local variables for state equality detection */ + mc_binary_info = MC_find_object_info(maps, xbt_binary_name); + mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path); + + MC_free_memory_map(maps); + XBT_INFO("Get debug information done !"); +} + void MC_init(){ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap); - + compare = 0; /* Initialize the data structures that must be persistent across every @@ -1684,36 +1796,11 @@ void MC_init(){ 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 ..."); - - /* 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_dict_free(&libsimgrid_location_list); - xbt_dict_free(&binary_location_list); - - XBT_INFO("Get debug information done !"); + MC_init_debug_info(); /* 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(); /* Init parmap */ parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT); @@ -1740,11 +1827,19 @@ void MC_init(){ 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("smx_current_context_serial"); - MC_ignore_global_variable("smx_current_context_key"); - MC_ignore_global_variable("sysv_maestro_context"); 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; @@ -1840,8 +1935,7 @@ void MC_modelcheck_safety(void) }else{ MC_SET_RAW_MEM; MC_init_memory_map_info(); - MC_get_libsimgrid_plt_section(); - MC_get_binary_plt_section(); + MC_init_debug_info(); MC_UNSET_RAW_MEM; } @@ -1850,7 +1944,7 @@ void MC_modelcheck_safety(void) 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(); + initial_state_safety->snapshot = MC_take_snapshot(0); MC_UNSET_RAW_MEM; MC_dpor();