#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)");
int _sg_mc_checkpoint=0;
char* _sg_mc_property_file=NULL;
int _sg_mc_timeout=0;
+int _sg_mc_hash=0;
int _sg_mc_max_depth=1000;
int _sg_mc_visited=0;
char *_sg_mc_dot_output_file = NULL;
_sg_mc_timeout= xbt_cfg_get_boolean(_sg_cfg_set, name);
}
+void _mc_cfg_cb_hash(const char *name, int pos) {
+ if (_sg_cfg_init_status && !_sg_do_model_check) {
+ xbt_die("You are specifying a value to enable/disable the use of global hash to speedup state comparaison, but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
+ }
+ _sg_mc_hash= xbt_cfg_get_boolean(_sg_cfg_set, name);
+}
+
void _mc_cfg_cb_max_depth(const char *name, int pos) {
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.");
mc_object_info_t mc_binary_info = NULL;
/* Ignore mechanism */
-xbt_dynar_t mc_stack_comparison_ignore;
-xbt_dynar_t mc_data_bss_comparison_ignore;
extern xbt_dynar_t mc_heap_comparison_ignore;
extern xbt_dynar_t stacks_areas;
xbt_free(v->name);
xbt_free(v->type_origin);
if(!v->global)
- dw_location_free(v->address.location);
+ dw_location_free(v->location);
xbt_free(v);
}
}
dw_variable_free((dw_variable_t) * (void **) t);
}
-// object_info
+// ***** 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->local_variables = xbt_dict_new_homogeneous(NULL);
+ mc_object_info_t res = xbt_new0(s_mc_object_info_t, 1);
+ res->subprograms = xbt_dynar_new(sizeof(dw_frame_t), NULL);
res->global_variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp);
res->types = xbt_dict_new_homogeneous(NULL);
+ res->types_by_name = 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)->subprograms);
xbt_dynar_free(&(*info)->global_variables);
xbt_dict_free(&(*info)->types);
+ xbt_dict_free(&(*info)->types_by_name);
xbt_free(info);
+ xbt_dynar_free(&(*info)->functions_index);
*info = NULL;
}
+// ***** Helpers
+
+void* MC_object_base_address(mc_object_info_t info) {
+ void* result = info->start_exec;
+ if(info->start_rw!=NULL && result > (void*) info->start_rw) result = info->start_rw;
+ if(info->start_ro!=NULL && result > (void*) info->start_ro) result = info->start_ro;
+ return result;
+}
+
+// ***** Functions index
+
+static int MC_compare_frame_index_items(mc_function_index_item_t a, mc_function_index_item_t b) {
+ if(a->low_pc < b->low_pc)
+ return -1;
+ else if(a->low_pc == b->low_pc)
+ return 0;
+ else
+ return 1;
+}
+
+static void MC_make_functions_index(mc_object_info_t info) {
+ xbt_dynar_t index = xbt_dynar_new(sizeof(s_mc_function_index_item_t), NULL);
+
+ // Populate the array:
+ dw_frame_t frame = NULL;
+ unsigned cursor = 0;
+ xbt_dynar_foreach(info->subprograms, cursor, frame) {
+ if(frame->low_pc==NULL)
+ continue;
+ s_mc_function_index_item_t entry;
+ entry.low_pc = frame->low_pc;
+ entry.high_pc = frame->high_pc;
+ entry.function = frame;
+ xbt_dynar_push(index, &entry);
+ }
+
+ mc_function_index_item_t base = (mc_function_index_item_t) xbt_dynar_get_ptr(index, 0);
+
+ // Sort the array by low_pc:
+ qsort(base,
+ xbt_dynar_length(index),
+ sizeof(s_mc_function_index_item_t),
+ (int (*)(const void *, const void *))MC_compare_frame_index_items);
+
+ info->functions_index = index;
+}
+
+mc_object_info_t MC_ip_find_object_info(void* ip) {
+ mc_object_info_t infos[2] = { mc_binary_info, mc_libsimgrid_info };
+ size_t n = 2;
+ size_t i;
+ for(i=0; i!=n; ++i) {
+ if(ip >= (void*)infos[i]->start_exec && ip <= (void*)infos[i]->end_exec) {
+ return infos[i];
+ }
+ }
+ return NULL;
+}
+
+static dw_frame_t MC_find_function_by_ip_and_object(void* ip, mc_object_info_t info) {
+ xbt_dynar_t dynar = info->functions_index;
+ mc_function_index_item_t base = (mc_function_index_item_t) xbt_dynar_get_ptr(dynar, 0);
+ int i = 0;
+ int j = xbt_dynar_length(dynar) - 1;
+ while(j>=i) {
+ int k = i + ((j-i)/2);
+ if(ip < base[k].low_pc) {
+ j = k-1;
+ } else if(ip > base[k].high_pc) {
+ i = k+1;
+ } else {
+ return base[k].function;
+ }
+ }
+ return NULL;
+}
+
+dw_frame_t MC_find_function_by_ip(void* ip) {
+ mc_object_info_t info = MC_ip_find_object_info(ip);
+ if(info==NULL)
+ return NULL;
+ else
+ return MC_find_function_by_ip_and_object(ip, info);
+}
+
+static void MC_post_process_variables(mc_object_info_t info) {
+ unsigned cursor = 0;
+ dw_variable_t variable = NULL;
+ xbt_dynar_foreach(info->global_variables, cursor, variable) {
+ if(variable->type_origin) {
+ variable->type = xbt_dict_get_or_null(info->types, variable->type_origin);
+ }
+ }
+}
+
+static void MC_post_process_functions(mc_object_info_t info) {
+ unsigned cursor = 0;
+ dw_frame_t function = NULL;
+ xbt_dynar_foreach(info->subprograms, cursor, function) {
+ unsigned cursor2 = 0;
+ dw_variable_t variable = NULL;
+ xbt_dynar_foreach(function->variables, cursor2, variable) {
+ if(variable->type_origin) {
+ variable->type = xbt_dict_get_or_null(info->types, variable->type_origin);
+ }
+ }
+ }
+}
+
+/** \brief Finds informations about a given shared object/executable */
+mc_object_info_t MC_find_object_info(memory_map_t maps, char* name, int executable) {
+ mc_object_info_t result = MC_new_object_info();
+ if(executable)
+ result->flags |= MC_OBJECT_INFO_EXECUTABLE;
+ result->file_name = xbt_strdup(name);
+ MC_find_object_address(maps, result);
+ MC_dwarf_get_variables(result);
+ MC_post_process_types(result);
+ MC_post_process_variables(result);
+ MC_post_process_functions(result);
+ MC_make_functions_index(result);
+ return result;
+}
+
/*************************************************************************/
static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr){
end = cursor - 1;
}else{
if(address){ /* global variable */
- if(var_test->address.address == address)
+ if(var_test->address == address)
return -1;
- if(var_test->address.address > address)
+ if(var_test->address > address)
end = cursor - 1;
else
start = cursor + 1;
}
if(strcmp(var_test->name, var) == 0){
- if(address && var_test->address.address < address)
+ if(address && var_test->address < address)
return cursor+1;
else
return cursor;
}
void MC_dwarf_register_global_variable(mc_object_info_t info, dw_variable_t variable) {
- int index = MC_dwarf_get_variable_index(info->global_variables, variable->name, variable->address.address);
+ int index = MC_dwarf_get_variable_index(info->global_variables, variable->name, variable->address);
if (index != -1)
xbt_dynar_insert_at(info->global_variables, index, &variable);
// TODO, else ?
MC_dwarf_register_non_global_variable(info, frame, variable);
}
-static void MC_post_process_array_size(mc_object_info_t info, dw_type_t 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 <%s> for array <%p>%s", type->dw_type_id, type->id, type->name);
- if(subtype->type==DW_TAG_array_type && type->byte_size==0) {
- MC_post_process_array_size(info, subtype);
- }
- type->byte_size = type->element_count*subtype->byte_size;
-}
-
-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==DW_TAG_array_type && type->byte_size==0)
- MC_post_process_array_size(info, type);
- }
-}
/******************************* Ignore mechanism *******************************/
/*********************************************************************************/
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){
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);
}
MC_SET_RAW_MEM;
- if(mc_libsimgrid_info){
+ xbt_assert(mc_libsimgrid_info, "MC subsystem not initialized");
unsigned int cursor = 0;
dw_variable_t current_var;
end = cursor - 1;
}
}
-
- }else{
- 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->name = strdup(name);
+ if(!raw_mem_set)
+ MC_UNSET_RAW_MEM;
+}
- if(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){
+static void MC_ignore_local_variable_in_object(const char *var_name, const char *frame_name, mc_object_info_t info) {
+ unsigned cursor2;
+ dw_frame_t frame;
+ int start, end;
+ int cursor = 0;
+ dw_variable_t current_var;
- xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var);
+ xbt_dynar_foreach(info->subprograms, cursor2, frame) {
- }else{
-
- 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;
- }
- }
+ if(frame_name && strcmp(frame_name, frame->name))
+ continue;
- if(strcmp(current_var->name, name) < 0)
- xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor + 1, &var);
- else
- xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor, &var);
+ 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);
+ int compare = strcmp(current_var->name, var_name);
+ if(compare == 0){
+ xbt_dynar_remove_at(frame->variables, cursor, NULL);
+ start = 0;
+ end = xbt_dynar_length(frame->variables) - 1;
+ }else if(compare < 0){
+ start = cursor + 1;
+ }else{
+ end = cursor - 1;
+ }
}
}
-
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
}
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(strcmp(frame_name, "*") == 0)
+ frame_name = NULL;
- if(mc_libsimgrid_info){
- unsigned int cursor = 0;
- 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_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){
- 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;
- }
- }
- }
- }else{
- 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){
- 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;
- }else{
- end = cursor - 1;
- }
- }
- }
- }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)){
-
- xbt_dynar_insert_at(mc_stack_comparison_ignore, 0, &var);
-
- }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;
- }
- }
+ MC_SET_RAW_MEM;
- 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_ignore_local_variable_in_object(var_name, frame_name, mc_libsimgrid_info);
+ if(frame_name!=NULL)
+ MC_ignore_local_variable_in_object(var_name, frame_name, mc_binary_info);
if(!raw_mem_set)
MC_UNSET_RAW_MEM;
/******************************* Initialisation of MC *******************************/
/*********************************************************************************/
-static void MC_dump_ignored_local_variables(void){
-
- if(mc_stack_comparison_ignore == NULL || xbt_dynar_is_empty(mc_stack_comparison_ignore))
- return;
-
- unsigned int cursor = 0;
- mc_stack_ignore_variable_t current_var;
-
- xbt_dynar_foreach(mc_stack_comparison_ignore, cursor, current_var){
- MC_ignore_local_variable(current_var->var_name, current_var->frame);
+static void MC_post_process_object_info(mc_object_info_t info) {
+ mc_object_info_t other_info = info == mc_binary_info ? mc_libsimgrid_info : mc_binary_info;
+ xbt_dict_cursor_t cursor = NULL;
+ char* key = NULL;
+ dw_type_t type = NULL;
+ xbt_dict_foreach(info->types, cursor, key, type){
+ if(type->name && type->byte_size == 0) {
+ type->other_object_same_type = xbt_dict_get_or_null(other_info->types_by_name, type->name);
+ }
}
-
- xbt_dynar_free(&mc_stack_comparison_ignore);
- mc_stack_comparison_ignore = NULL;
-
}
-static void MC_dump_ignored_global_variables(void){
-
- if(mc_data_bss_comparison_ignore == NULL || xbt_dynar_is_empty(mc_data_bss_comparison_ignore))
- return;
-
- unsigned int cursor = 0;
- mc_data_bss_ignore_variable_t current_var;
-
- xbt_dynar_foreach(mc_data_bss_comparison_ignore, cursor, current_var){
- MC_ignore_global_variable(current_var->name);
- }
-
- xbt_dynar_free(&mc_data_bss_comparison_ignore);
- mc_data_bss_comparison_ignore = NULL;
-
-}
-
-static void MC_init_debug_info();
-static void MC_init_debug_info() {
+static void MC_init_debug_info(void) {
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_binary_info = MC_find_object_info(maps, xbt_binary_name, 1);
+ mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path, 0);
+
+ // Use information of the other objects:
+ MC_post_process_object_info(mc_binary_info);
+ MC_post_process_object_info(mc_libsimgrid_info);
MC_free_memory_map(maps);
XBT_INFO("Get debug information done !");
MC_init_memory_map_info();
MC_init_debug_info();
- /* Remove variables ignored before getting list of variables */
- MC_dump_ignored_local_variables();
- MC_dump_ignored_global_variables();
-
/* Init parmap */
parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT);
MC_ignore_local_variable("_throw_ctx", "*");
MC_ignore_local_variable("ctx", "*");
+ MC_ignore_local_variable("self", "simcall_BODY_mc_snapshot");
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("compared_pointers");
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("counter"); /* Static variable used for tracing */
MC_ignore_global_variable("maestro_stack_start");
MC_ignore_global_variable("maestro_stack_end");
+ MC_ignore_global_variable("smx_total_comms");
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));
