} else {
xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name);
}
- xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
}
void _mc_cfg_cb_checkpoint(const char *name, int pos) {
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.");
}
_surf_mc_checkpoint = xbt_cfg_get_int(_surf_cfg_set, name);
- xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
}
void _mc_cfg_cb_property(const char *name, int pos) {
if (_surf_init_status && !_surf_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.");
}
_surf_mc_property_file= xbt_cfg_get_string(_surf_cfg_set, name);
- xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
}
void _mc_cfg_cb_timeout(const char *name, int pos) {
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.");
}
_surf_mc_timeout= xbt_cfg_get_int(_surf_cfg_set, name);
- xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
+void _mc_cfg_cb_max_depth(const char *name, int pos) {
+ if (_surf_init_status && !_surf_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.");
+ }
+ _surf_mc_max_depth= xbt_cfg_get_int(_surf_cfg_set, name);
+}
+
+void _mc_cfg_cb_visited(const char *name, int pos) {
+ if (_surf_init_status && !_surf_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.");
+ }
+ _surf_mc_visited= xbt_cfg_get_int(_surf_cfg_set, name);
}
mc_state_t mc_current_state = NULL;
char mc_replay_mode = FALSE;
double *mc_time = NULL;
-mc_snapshot_t initial_snapshot = NULL;
-int raw_mem_set;
/* Safety */
xbt_fifo_t mc_stack_safety = NULL;
mc_stats_t mc_stats = NULL;
+mc_global_t initial_state_safety = NULL;
/* Liveness */
/* Local */
xbt_dict_t mc_local_variables = NULL;
+/* Global */
+xbt_dynar_t mc_global_variables = 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;
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);
void MC_do_the_modelcheck_for_real() {
if (!_surf_mc_property_file || _surf_mc_property_file[0]=='\0') {
mc_reduce_kind=e_mc_reduce_dpor;
XBT_INFO("Check a safety property");
- MC_modelcheck();
+ MC_modelcheck_safety();
} else {
}
}
-/**
- * \brief Initialize the model-checker data structures
- */
-void MC_init_safety(void)
-{
-
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-
- /* Check if MC is already initialized */
- if (initial_snapshot)
- return;
-
- mc_time = xbt_new0(double, simix_process_maxpid);
-
- /* Initialize the data structures that must be persistent across every
- iteration of the model-checker (in RAW memory) */
-
- MC_SET_RAW_MEM;
-
- /* Initialize statistics */
- mc_stats = xbt_new0(s_mc_stats_t, 1);
- mc_stats->state_size = 1;
-
- /* Create exploration stack */
- mc_stack_safety = xbt_fifo_new();
-
- MC_UNSET_RAW_MEM;
-
- MC_dpor_init();
-
- MC_SET_RAW_MEM;
- /* Save the initial state */
- initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot(initial_snapshot);
- MC_UNSET_RAW_MEM;
-
- if(raw_mem_set)
- MC_SET_RAW_MEM;
-
-}
void MC_compare(void){
compare = 1;
}
+void MC_init(){
-void MC_modelcheck(void)
-{
- MC_init_safety();
- MC_dpor();
- MC_exit();
-}
-
-void MC_init_liveness(){
-
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
mc_time = xbt_new0(double, simix_process_maxpid);
MC_SET_RAW_MEM;
- char *ls_path = get_libsimgrid_path();
+ MC_init_memory_map_info();
mc_local_variables = xbt_dict_new_homogeneous(NULL);
MC_get_local_variables(xbt_binary_name, binary_location_list, &mc_local_variables);
/* Get local variables in libsimgrid for state equality detection */
- xbt_dict_t libsimgrid_location_list = MC_get_location_list(ls_path);
- MC_get_local_variables(ls_path, libsimgrid_location_list, &mc_local_variables);
+ xbt_dict_t libsimgrid_location_list = MC_get_location_list(libsimgrid_path);
+ MC_get_local_variables(libsimgrid_path, libsimgrid_location_list, &mc_local_variables);
- initial_state_liveness = xbt_new0(s_mc_global_t, 1);
+ /* Get .plt section (start and end addresses) for data libsimgrid and data program comparison */
+ get_libsimgrid_plt_section();
+ get_binary_plt_section();
+
+ /* Get global variables */
+ MC_get_global_variables(xbt_binary_name);
+ MC_get_global_variables(libsimgrid_path);
MC_UNSET_RAW_MEM;
- MC_init_memory_map_info();
+ /* 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("_log_ev", "*");
+ MC_ignore_stack("_throw_ctx", "*");
+ MC_ignore_stack("ctx", "*");
- /* Get .plt section (start and end addresses) for data libsimgrid and data program comparison */
- get_libsimgrid_plt_section();
- get_binary_plt_section();
if(raw_mem_set)
MC_SET_RAW_MEM;
}
+void MC_modelcheck_safety(void)
+{
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ /* Check if MC is already initialized */
+ if (initial_state_safety)
+ return;
+
+ mc_time = xbt_new0(double, simix_process_maxpid);
+
+ /* Initialize the data structures that must be persistent across every
+ iteration of the model-checker (in RAW memory) */
+
+ MC_SET_RAW_MEM;
+
+ /* Initialize statistics */
+ mc_stats = xbt_new0(s_mc_stats_t, 1);
+ mc_stats->state_size = 1;
+
+ /* Create exploration stack */
+ mc_stack_safety = xbt_fifo_new();
+
+ MC_UNSET_RAW_MEM;
+
+ if(_surf_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;
+ }
+
+ MC_dpor_init();
+
+ 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;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
+ MC_dpor();
+
+ MC_exit();
+}
+
void MC_modelcheck_liveness(){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- MC_init_liveness();
+ MC_init();
MC_SET_RAW_MEM;
/* Initialize statistics */
mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
- XBT_DEBUG("Creating stack");
-
/* Create exploration stack */
mc_stack_liveness = xbt_fifo_new();
+ initial_state_liveness = xbt_new0(s_mc_global_t, 1);
+
MC_UNSET_RAW_MEM;
MC_ddfs_init();
MC_print_statistics_pairs(mc_stats_pair);
xbt_free(mc_time);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
}
void MC_exit(void)
{
- MC_print_statistics(mc_stats);
xbt_free(mc_time);
MC_memory_exit();
}
if(start == -1){
/* Restore the initial state */
- MC_restore_snapshot(initial_snapshot);
+ 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;
void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
{
- int raw_mem = (mmalloc_get_current_heap() == raw_heap);
+ initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
int value;
char *req_str;
XBT_DEBUG("**** Begin Replay ****");
/* Restore the initial state */
- MC_restore_snapshot(initial_state_liveness->initial_snapshot);
+ 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 */
-
- MC_UNSET_RAW_MEM;
+ if(!initial_state_liveness->raw_mem_set)
+ MC_UNSET_RAW_MEM;
if(all_stack){
XBT_DEBUG("**** End Replay ****");
- if(raw_mem)
+ if(initial_state_liveness->raw_mem_set)
MC_SET_RAW_MEM;
else
MC_UNSET_RAW_MEM;
void MC_dump_stack_safety(xbt_fifo_t stack)
{
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_show_stack_safety(stack);
void MC_dump_stack_liveness(xbt_fifo_t stack){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
mc_pair_stateless_t pair;
//XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
XBT_INFO("Expanded / Visited = %lf",
(double) stats->visited_pairs / stats->expanded_pairs);
+
+ if(mmalloc_get_current_heap() == raw_heap)
+ MC_UNSET_RAW_MEM;
}
void MC_assert(int prop)
void MC_automaton_load(const char *file){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
void MC_ignore_heap(void *address, size_t size){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
MC_SET_RAW_MEM;
}
+void MC_ignore_data_bss(void *address, size_t size){
+
+ 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), NULL);
+
+ if(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){
+
+ 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;
+
+ xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var);
+
+ }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(current_var->address == address){
+ MC_UNSET_RAW_MEM;
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ return;
+ }
+ if(current_var->address < address)
+ start = cursor + 1;
+ if(current_var->address > address)
+ end = cursor - 1;
+ }
+
+ 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(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);
+
+ }
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+}
+
void MC_ignore_stack(const char *var_name, const char *frame){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
void MC_new_stack_area(void *stack, char *name, void* context, size_t size){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
if(stacks_areas == NULL)
FILE *fp = popen(command, "r");
- if(fp == NULL)
+ if(fp == NULL){
perror("popen for objdump failed");
+ xbt_abort();
+ }
int debug = 0; /*Detect if the program has been compiled with -g */
return location_list;
}
-char *get_libsimgrid_path(){
-
- char *command = bprintf("ldd %s", xbt_binary_name);
-
- FILE *fp = popen(command, "r");
- if(fp == NULL)
- perror("popen for ldd failed");
-
- char *line;
- ssize_t read;
- size_t n = 0;
- xbt_dynar_t split;
-
- while((read = getline(&line, &n, fp)) != -1){
-
- if(n == 0)
- continue;
-
- /* Wipeout the new line character */
- line[read - 1] = '\0';
-
- xbt_str_strip_spaces(line);
- xbt_str_ltrim(line, NULL);
- split = xbt_str_split(line, " ");
-
- if(strncmp((char *)xbt_dynar_get_as(split, 0, char *), "libsimgrid.so", 13) == 0){
- free(line);
- free(command);
- pclose(fp);
- return ((char *)xbt_dynar_get_as(split, 2, char *));
- }
-
- xbt_dynar_free(&split);
-
- }
-
- free(line);
- free(command);
- pclose(fp);
-
- return NULL;
-
-}
-
static dw_frame_t get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){
xbt_dict_cursor_t cursor = NULL;
}
}
+
+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;
+
+ 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;
+ else
+ start = cursor + 1;
+ }
+ if(var->address > address)
+ end = cursor - 1;
+ }
+
+ return 0;
+}
+
+
+static void MC_get_global_variables(char *elf_file){
+
+ FILE *fp;
+
+ char *command = bprintf("objdump -t -j .data -j .bss %s", elf_file);
+
+ fp = popen(command, "r");
+
+ if(fp == NULL){
+ perror("popen failed");
+ xbt_abort();
+ }
+
+ if(mc_global_variables == NULL)
+ mc_global_variables = xbt_dynar_new(sizeof(global_variable_t), global_variable_free_voidp);
+
+ char *line = NULL;
+ ssize_t read;
+ size_t n = 0;
+
+ xbt_dynar_t line_tokens = NULL;
+ unsigned long offset;
+
+ int type = strcmp(elf_file, xbt_binary_name); /* 0 = binary, other = libsimgrid */
+
+ while ((read = getline(&line, &n, fp)) != -1){
+
+ if(n == 0)
+ continue;
+
+ /* Wipeout the new line character */
+ line[read - 1] = '\0';
+
+ xbt_str_strip_spaces(line);
+ xbt_str_ltrim(line, NULL);
+
+ line_tokens = xbt_str_split(line, NULL);
+
+ if(xbt_dynar_length(line_tokens) <= 4 || strcmp(xbt_dynar_get_as(line_tokens, 0, char *), "SYMBOL") == 0)
+ continue;
+
+ 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;
+
+ global_variable_t var = xbt_new0(s_global_variable_t, 1);
+
+ 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;
+ }
+
+ 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*));
+
+ if(data_bss_ignore_size(var->address) > 0)
+ global_variable_free(var);
+ else
+ xbt_dynar_push(mc_global_variables, &var);
+
+ xbt_dynar_free(&line_tokens);
+
+ }
+
+ free(command);
+ free(line);
+ pclose(fp);
+
+}
+
+void global_variable_free(global_variable_t v){
+ xbt_free(v->name);
+ xbt_free(v);
+}
+
+void global_variable_free_voidp(void *v){
+ global_variable_free((global_variable_t) * (void **) v);
+}
