-/* 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. */
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
+#include <libgen.h>
#include "simgrid/sg_config.h"
#include "../surf/surf_private.h"
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;
-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);
}
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_int(_sg_cfg_set, name);
+ _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_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 */
+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;
-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_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')){
- MC_SET_RAW_MEM;
- MC_init_dot_output();
- MC_UNSET_RAW_MEM;
+ xbt_free(l);
}
+}
- 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_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 {
+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();
+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->location);
+ xbt_free(v);
}
}
-
-void MC_compare(void){
- compare = 1;
+void dw_variable_free_voidp(void *t){
+ dw_variable_free((dw_variable_t) * (void **) t);
}
-void MC_init(){
+// ***** object_info
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-
- compare = 0;
+mc_object_info_t MC_new_object_info(void) {
+ mc_object_info_t res = xbt_new0(s_mc_object_info_t, 1);
+ 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);
+ res->types_by_name = xbt_dict_new_homogeneous(NULL);
+ return res;
+}
- /* Initialize the data structures that must be persistent across every
- iteration of the model-checker (in RAW memory) */
- MC_SET_RAW_MEM;
+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_dict_free(&(*info)->types_by_name);
+ xbt_free(info);
+ xbt_dynar_free(&(*info)->functions_index);
+ *info = NULL;
+}
- MC_init_memory_map_info();
-
- mc_local_variables = xbt_dict_new_homogeneous(NULL);
+// ***** Helpers
- /* 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);
+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;
+}
- /* 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);
+// ***** Functions index
- 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();
+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;
+}
- /* Get global variables */
- MC_get_global_variables(xbt_binary_name);
- MC_get_global_variables(libsimgrid_path);
+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);
- MC_UNSET_RAW_MEM;
+ // Populate the array:
+ dw_frame_t frame = NULL;
+ xbt_dict_cursor_t cursor = NULL;
+ const char* name = NULL;
+ xbt_dict_foreach(info->local_variables, cursor, name, 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);
+ }
- /* 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");
-
- 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));
+ mc_function_index_item_t base = (mc_function_index_item_t) xbt_dynar_get_ptr(index, 0);
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ // 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;
}
-void MC_init_dot_output(){
+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;
+}
- 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");
- xbt_abort();
+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;
+}
- 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");
+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);
+}
+/** \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_make_functions_index(result);
+ return result;
}
-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;
+static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr){
- mc_time = xbt_new0(double, simix_process_maxpid);
+ dw_location_t loc = xbt_new0(s_dw_location_t, 1);
- /* mc_time refers to clock for each process -> ignore it for heap comparison */
- MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double));
+ 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;
- /* Initialize the data structures that must be persistent across every
- iteration of the model-checker (in RAW memory) */
-
- MC_SET_RAW_MEM;
+ }else{
- /* Initialize statistics */
- mc_stats = xbt_new0(s_mc_stats_t, 1);
- mc_stats->state_size = 1;
+ int cursor = 0;
+ char *tok = NULL, *tok2 = NULL;
+
+ xbt_dynar_t tokens1 = xbt_str_split(expr, ";");
+ xbt_dynar_t tokens2;
- /* Create exploration stack */
- mc_stack_safety = xbt_fifo_new();
+ loc->type = e_dw_compose;
+ loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
- MC_UNSET_RAW_MEM;
+ while(cursor < xbt_dynar_length(tokens1)){
- 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;
+ 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);
+ }
+
+ cursor++;
+ xbt_dynar_free(&tokens2);
+
+ }
+
+ xbt_dynar_free(&tokens1);
+
+ return loc;
+
}
- 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;
- MC_dpor();
+/** \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){
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ xbt_dict_cursor_t cursor = NULL;
+ char *name;
+ dw_frame_t res;
- MC_exit();
+ 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;
+
}
-void MC_modelcheck_liveness(){
+static dw_variable_t MC_dwarf_get_variable_by_name(dw_frame_t frame, char *var){
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ unsigned int cursor = 0;
+ dw_variable_t current_var;
- MC_init();
+ xbt_dynar_foreach(frame->variables, cursor, current_var){
+ if(strcmp(var, current_var->name) == 0)
+ return current_var;
+ }
- mc_time = xbt_new0(double, simix_process_maxpid);
+ return NULL;
+}
- /* 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;
+static int MC_dwarf_get_variable_index(xbt_dynar_t variables, char* var, void *address){
- /* Create exploration stack */
- mc_stack_liveness = xbt_fifo_new();
+ if(xbt_dynar_is_empty(variables))
+ return 0;
- /* Create the initial state */
- initial_state_liveness = xbt_new0(s_mc_global_t, 1);
+ unsigned int cursor = 0;
+ int start = 0;
+ int end = xbt_dynar_length(variables) - 1;
+ dw_variable_t var_test = NULL;
- MC_UNSET_RAW_MEM;
+ 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)
+ return -1;
+ if(var_test->address > address)
+ end = cursor - 1;
+ else
+ start = cursor + 1;
+ }else{ /* local variable */
+ return -1;
+ }
+ }
+ }
- MC_ddfs_init();
+ if(strcmp(var_test->name, var) == 0){
+ if(address && var_test->address < address)
+ return cursor+1;
+ else
+ return cursor;
+ }else if(strcmp(var_test->name, var) < 0)
+ return cursor+1;
+ else
+ return cursor;
- /* We're done */
- MC_print_statistics(mc_stats);
- xbt_free(mc_time);
+}
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+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);
+ if (index != -1)
+ xbt_dynar_insert_at(info->global_variables, index, &variable);
+ // TODO, else ?
+}
+void MC_dwarf_register_non_global_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable) {
+ xbt_assert(frame, "Frame is NULL");
+ int index = MC_dwarf_get_variable_index(frame->variables, variable->name, NULL);
+ if (index != -1)
+ xbt_dynar_insert_at(frame->variables, index, &variable);
+ // TODO, else ?
}
+void MC_dwarf_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable) {
+ if(variable->global)
+ MC_dwarf_register_global_variable(info, variable);
+ else if(frame==NULL)
+ xbt_die("No frame for this local variable");
+ else
+ MC_dwarf_register_non_global_variable(info, frame, variable);
+}
-void MC_exit(void)
-{
- 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;
- xbt_free(mc_time);
- MC_memory_exit();
- xbt_abort();
-}
+/******************************* Ignore mechanism *******************************/
+/*********************************************************************************/
-int SIMIX_pre_mc_random(smx_simcall_t simcall){
+xbt_dynar_t mc_checkpoint_ignore;
- return simcall->mc_value;
-}
+typedef struct s_mc_stack_ignore_variable{
+ char *var_name;
+ char *frame;
+}s_mc_stack_ignore_variable_t, *mc_stack_ignore_variable_t;
+/**************************** Free functions ******************************/
-int MC_random(void)
-{
- /*FIXME: return mc_current_state->executed_transition->random.value;*/
- return simcall_mc_random();
+static void stack_ignore_variable_free(mc_stack_ignore_variable_t v){
+ xbt_free(v->var_name);
+ xbt_free(v->frame);
+ xbt_free(v);
}
-/**
- * \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;
+static void stack_ignore_variable_free_voidp(void *v){
+ stack_ignore_variable_free((mc_stack_ignore_variable_t) * (void **) v);
+}
- 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);
- }
- }
+void heap_ignore_region_free(mc_heap_ignore_region_t r){
+ xbt_free(r);
}
-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;
+void heap_ignore_region_free_voidp(void *r){
+ heap_ignore_region_free((mc_heap_ignore_region_t) * (void **) r);
}
-/**
- * \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);
+static void checkpoint_ignore_region_free(mc_checkpoint_ignore_region_t r){
+ xbt_free(r);
+}
- 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 checkpoint_ignore_region_free_voidp(void *r){
+ checkpoint_ignore_region_free((mc_checkpoint_ignore_region_t) * (void **) r);
+}
- XBT_DEBUG("**** Begin Replay ****");
+/***********************************************************************/
- 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;
- }
+void MC_ignore_heap(void *address, size_t size){
- start_item = xbt_fifo_get_last_item(stack);
- if(start != -1){
- while (i != start){
- start_item = xbt_fifo_get_prev_item(start_item);
- i++;
- }
- }
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
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_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]++;
}
- MC_UNSET_RAW_MEM;
+ 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;
+ }
- /* 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)) {
+ 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;
+ }
+ }
- 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);
+ 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;
-
- 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();
+void MC_remove_ignore_heap(void *address, size_t size){
- count++;
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- 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_SET_RAW_MEM;
+
+ unsigned int cursor = 0;
+ int start = 0;
+ int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1;
+ mc_heap_ignore_region_t region;
+ int ignore_found = 0;
+
+ while(start <= end){
+ cursor = (start + end) / 2;
+ region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t);
+ if(region->address == address){
+ ignore_found = 1;
+ break;
+ }else if(region->address < address){
+ start = cursor + 1;
+ }else{
+ if((char * )region->address <= ((char *)address + size)){
+ ignore_found = 1;
+ break;
+ }else{
+ end = cursor - 1;
}
}
- MC_UNSET_RAW_MEM;
-
- /* Update statistics */
- mc_stats->visited_states++;
- mc_stats->executed_transitions++;
-
+ }
+
+ if(ignore_found == 1){
+ xbt_dynar_remove_at(mc_heap_comparison_ignore, cursor, NULL);
+ MC_remove_ignore_heap(address, size);
}
- XBT_DEBUG("**** End Replay ****");
-
- if(raw_mem)
- MC_SET_RAW_MEM;
- else
+ if(!raw_mem_set)
MC_UNSET_RAW_MEM;
-
}
-void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
-{
-
- initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+void MC_ignore_global_variable(const char *name){
- 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;
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- XBT_DEBUG("**** Begin Replay ****");
+ MC_SET_RAW_MEM;
- /* Restore the initial state */
- MC_restore_snapshot(initial_state_liveness->snapshot);
+ xbt_assert(mc_libsimgrid_info, "MC subsystem not initialized");
- /* 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;
+ unsigned int cursor = 0;
+ dw_variable_t current_var;
+ int start = 0;
+ int end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1;
- if(all_stack){
+ while(start <= end){
+ cursor = (start + end) /2;
+ 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_libsimgrid_info->global_variables, cursor, NULL);
+ start = 0;
+ end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1;
+ }else if(strcmp(current_var->name, name) < 0){
+ start = cursor + 1;
+ }else{
+ end = cursor - 1;
+ }
+ }
- item = xbt_fifo_get_last_item(stack);
+ if(!raw_mem_set)
+ MC_UNSET_RAW_MEM;
+}
- while(depth <= xbt_fifo_size(stack)){
+void MC_ignore_local_variable(const char *var_name, const char *frame_name){
+
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- pair = (mc_pair_t) xbt_fifo_get_item_content(item);
- state = (mc_state_t) pair->graph_state;
+ MC_SET_RAW_MEM;
- 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);
- }
-
+ 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;
+ }
}
-
- SIMIX_simcall_pre(req, value);
- MC_wait_for_requests();
}
+ 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;
+ }
+ }
+ }
- depth++;
-
- /* Update statistics */
- mc_stats->visited_pairs++;
- mc_stats->executed_transitions++;
+ if(!raw_mem_set)
+ MC_UNSET_RAW_MEM;
- item = xbt_fifo_get_prev_item(item);
- }
+}
- }else{
+void MC_new_stack_area(void *stack, char *name, void* context, size_t size){
- /* 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)) {
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- pair = (mc_pair_t) xbt_fifo_get_item_content(item);
- state = (mc_state_t) pair->graph_state;
+ MC_SET_RAW_MEM;
- 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);
- }
+ if(stacks_areas == NULL)
+ stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL);
- }
-
- SIMIX_simcall_pre(req, value);
- MC_wait_for_requests();
- }
-
- depth++;
-
- /* Update statistics */
- mc_stats->visited_pairs++;
- mc_stats->executed_transitions++;
- }
- }
-
- XBT_DEBUG("**** End Replay ****");
+ stack_region_t region = NULL;
+ region = xbt_new0(s_stack_region_t, 1);
+ region->address = stack;
+ region->process_name = strdup(name);
+ region->context = context;
+ region->size = size;
+ region->block = ((char*)stack - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
+ xbt_dynar_push(stacks_areas, ®ion);
- if(initial_state_liveness->raw_mem_set)
- MC_SET_RAW_MEM;
- else
+ if(!raw_mem_set)
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);
+void MC_ignore(void *addr, size_t size){
- MC_show_stack_safety(stack);
+ int raw_mem_set= (mmalloc_get_current_heap() == raw_heap);
- if(!_sg_mc_checkpoint){
+ MC_SET_RAW_MEM;
- mc_state_t state;
+ if(mc_checkpoint_ignore == NULL)
+ mc_checkpoint_ignore = xbt_dynar_new(sizeof(mc_checkpoint_ignore_region_t), checkpoint_ignore_region_free_voidp);
- MC_SET_RAW_MEM;
- while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
- MC_state_delete(state);
- MC_UNSET_RAW_MEM;
+ 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);
+ }
}
- if(raw_mem_set)
- MC_SET_RAW_MEM;
- else
+ if(!raw_mem_set)
MC_UNSET_RAW_MEM;
-
}
+/******************************* Initialisation of MC *******************************/
+/*********************************************************************************/
-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);
- }
- }
-}
+static void MC_init_debug_info();
+static void MC_init_debug_info() {
+ XBT_INFO("Get debug information ...");
-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);
-}
+ 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, 1);
+ mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path, 0);
-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");
- }
- }
- }
+ MC_free_memory_map(maps);
+ XBT_INFO("Get debug information done !");
}
-void MC_dump_stack_liveness(xbt_fifo_t stack){
+void MC_init(){
int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- mc_pair_t pair;
+ compare = 0;
+
+ /* Initialize the data structures that must be persistent across every
+ iteration of the model-checker (in RAW memory) */
MC_SET_RAW_MEM;
- while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL)
- MC_pair_delete(pair);
+
+ MC_init_memory_map_info();
+ MC_init_debug_info();
+
+ /* Init parmap */
+ parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT);
+
MC_UNSET_RAW_MEM;
+ /* 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_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));
+ 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;
}
+static void MC_init_dot_output(){ /* FIXME : more colors */
-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);
-}
-
-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);
- 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;
- xbt_abort();
- }
-}
+ 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";
-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);
+ dot_output = fopen(_sg_mc_dot_output_file, "w");
+
+ if(dot_output == NULL){
+ perror("Error open dot output file");
xbt_abort();
}
-}
-void MC_process_clock_add(smx_process_t process, double amount)
-{
- mc_time[process->pid] += amount;
-}
+ 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");
-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;
- }
}
-void MC_automaton_load(const char *file){
+/******************************* Core of MC *******************************/
+/**************************************************************************/
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+void MC_do_the_modelcheck_for_real() {
MC_SET_RAW_MEM;
-
- if (_mc_property_automaton == NULL)
- _mc_property_automaton = xbt_automaton_new();
+ mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1);
+ MC_UNSET_RAW_MEM;
- xbt_automaton_load(_mc_property_automaton,file);
+ 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;
- MC_UNSET_RAW_MEM;
+ XBT_INFO("Check a safety property");
+ MC_modelcheck_safety();
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ } else {
-}
+ if (mc_reduce_kind==e_mc_reduce_unset)
+ mc_reduce_kind=e_mc_reduce_none;
-void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
+ XBT_INFO("Check the liveness property %s",_sg_mc_property_file);
+ MC_automaton_load(_sg_mc_property_file);
+ MC_modelcheck_liveness();
+ }
+}
+void MC_modelcheck_safety(void)
+{
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();
+ /* Check if MC is already initialized */
+ if (initial_state_safety)
+ return;
- xbt_automaton_propositional_symbol_new(_mc_property_automaton,id,fct);
+ mc_time = xbt_new0(double, simix_process_maxpid);
- MC_UNSET_RAW_MEM;
+ /* mc_time refers to clock for each process -> ignore it for heap comparison */
+ MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double));
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ /* Initialize the data structures that must be persistent across every
+ iteration of the model-checker (in RAW memory) */
-}
-
-/************ MC_ignore ***********/
-
-void heap_ignore_region_free(mc_heap_ignore_region_t r){
- xbt_free(r);
-}
+ MC_SET_RAW_MEM;
-void heap_ignore_region_free_voidp(void *r){
- heap_ignore_region_free((mc_heap_ignore_region_t) * (void **) r);
-}
+ /* Initialize statistics */
+ mc_stats = xbt_new0(s_mc_stats_t, 1);
+ mc_stats->state_size = 1;
-void MC_ignore_heap(void *address, size_t size){
+ /* Create exploration stack */
+ mc_stack_safety = xbt_fifo_new();
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0'))
+ MC_init_dot_output();
- MC_SET_RAW_MEM;
+ MC_UNSET_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 = 1;
+ if(_sg_mc_visited > 0){
+ MC_init();
}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] = 1;
- }
-
- 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;
- }
- if(current_region->address < address)
- start = cursor + 1;
- if(current_region->address > address)
- end = cursor - 1;
+ MC_SET_RAW_MEM;
+ MC_init_memory_map_info();
+ MC_init_debug_info();
+ MC_UNSET_RAW_MEM;
}
- 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);
+ 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(0);
+ initial_state_safety->initial_communications_pattern_done = 0;
+ initial_state_safety->comm_deterministic = 1;
+ initial_state_safety->send_deterministic = 1;
MC_UNSET_RAW_MEM;
+ MC_dpor();
+
if(raw_mem_set)
MC_SET_RAW_MEM;
+
+ xbt_abort();
+ //MC_exit();
}
-void MC_remove_ignore_heap(void *address, size_t size){
+void MC_modelcheck_liveness(){
int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ 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;
- unsigned int cursor = 0;
- int start = 0;
- int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1;
- mc_heap_ignore_region_t region;
- int ignore_found = 0;
+ /* Create exploration stack */
+ mc_stack_liveness = xbt_fifo_new();
- while(start <= end){
- cursor = (start + end) / 2;
- region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t);
- if(region->address == address){
- ignore_found = 1;
- break;
- }
- if(region->address < address)
- start = cursor + 1;
- if(region->address > address){
- if((char * )region->address <= ((char *)address + size)){
- ignore_found = 1;
- break;
- }else
- end = cursor - 1;
- }
- }
-
- if(ignore_found == 1){
- xbt_dynar_remove_at(mc_heap_comparison_ignore, cursor, NULL);
- MC_remove_ignore_heap(address, size);
- }
+ /* Create the initial state */
+ initial_state_liveness = xbt_new0(s_mc_global_t, 1);
- MC_UNSET_RAW_MEM;
+ if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0'))
+ MC_init_dot_output();
- if(raw_mem_set)
- MC_SET_RAW_MEM;
+ MC_UNSET_RAW_MEM;
-}
+ MC_ddfs_init();
-void MC_ignore_data_bss(void *address, size_t size){
+ /* We're done */
+ MC_print_statistics(mc_stats);
+ xbt_free(mc_time);
- int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
- 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);
+}
- 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(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){
+void MC_exit(void)
+{
+ xbt_free(mc_time);
- xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var);
+ MC_memory_exit();
+ //xbt_abort();
+}
- }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;
+int SIMIX_pre_mc_random(smx_simcall_t simcall, int min, int max){
- 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;
- }
+ return simcall->mc_value;
+}
- 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);
- }
+int MC_random(int min, int max)
+{
+ /*FIXME: return mc_current_state->executed_transition->random.value;*/
+ return simcall_mc_random(min, max);
+}
- /* Remove variable from mc_global_variables */
+/**
+ * \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(mc_global_variables != NULL){
-
- unsigned int cursor = 0;
- int start = 0;
- int end = xbt_dynar_length(mc_global_variables) - 1;
- global_variable_t current_var;
- int var_found;
-
- 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;
+ 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(var_found)
- xbt_dynar_remove_at(mc_global_variables, cursor, NULL);
-
}
-
- 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;
-
- 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;
+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;
+ }
}
- if(var->address > address)
- end = cursor - 1;
}
-
- return 0;
+ return deadlock;
}
+/**
+ * \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;
+ int comm_pattern = 0;
-void MC_ignore_stack(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), NULL);
-
- if(xbt_dynar_is_empty(mc_stack_comparison_ignore)){
-
- 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);
-
- xbt_dynar_insert_at(mc_stack_comparison_ignore, 0, &var);
+ XBT_DEBUG("**** Begin Replay ****");
- }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;
+ 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(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){
- MC_UNSET_RAW_MEM;
- if(raw_mem_set)
- MC_SET_RAW_MEM;
- return;
- }
- if(strcmp(current_var->var_name, var_name) < 0)
- start = cursor + 1;
- if(strcmp(current_var->var_name, var_name) > 0)
- 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;
+ start_item = xbt_fifo_get_last_item(stack);
+ if(start != -1){
+ while (i != start){
+ start_item = xbt_fifo_get_prev_item(start_item);
+ i++;
}
-
- 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(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);
-
}
- /* Remove variable from mc_local_variables */
-
- if(mc_local_variables != NULL){
-
- 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);
+ 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);
}
-
}
-
+ xbt_dynar_reset(communications_pattern);
MC_UNSET_RAW_MEM;
- if(raw_mem_set)
- MC_SET_RAW_MEM;
-
-}
-
-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);
-
- stack_region_t region = NULL;
- region = xbt_new0(s_stack_region_t, 1);
- region->address = stack;
- region->process_name = strdup(name);
- region->context = context;
- 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;
+ /* 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(raw_mem_set)
+ state = (mc_state_t) xbt_fifo_get_item_content(item);
+ saved_req = MC_state_get_executed_request(state, &value);
+
MC_SET_RAW_MEM;
-}
-
-/************ DWARF ***********/
-
-xbt_dict_t MC_get_location_list(const char *elf_file){
-
- char *command = bprintf("objdump -Wo %s", elf_file);
-
- FILE *fp = popen(command, "r");
-
- if(fp == NULL){
- perror("popen for objdump failed");
- xbt_abort();
- }
-
- int debug = 0; /*Detect if the program has been compiled with -g */
-
- 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;
-
- while ((read = xbt_getline(&line, &n, fp)) != -1) {
-
- /* Wipeout the new line character */
- line[read - 1] = '\0';
-
- xbt_str_trim(line, NULL);
-
- if(n == 0)
- continue;
-
- if(strlen(line) == 0)
- continue;
-
- if(debug == 0){
-
- if(strncmp(line, elf_file, strlen(elf_file)) == 0)
- continue;
-
- if(strncmp(line, "Contents", 8) == 0)
- continue;
-
- if(strncmp(line, "Offset", 6) == 0){
- debug = 1;
- continue;
- }
- }
-
- if(debug == 0){
- XBT_INFO("Your program must be compiled with -g");
- xbt_abort();
- }
-
- xbt_dynar_t loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
-
- xbt_str_strip_spaces(line);
- split = xbt_str_split(line, " ");
-
- while(read != -1 && strcmp("<End", (char *)xbt_dynar_get_as(split, 1, char *)) != 0){
-
- dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
- new_entry->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);
-
- xbt_dynar_push(loclist, &new_entry);
-
- xbt_dynar_free(&split);
- free(loc_expr);
+ 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;
- read = xbt_getline(&line, &n, fp);
- if(read != -1){
- line[read - 1] = '\0';
- xbt_str_strip_spaces(line);
- split = xbt_str_split(line, " ");
+ /* 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);
}
-
}
-
- 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);
+ if(req->call == SIMCALL_COMM_ISEND)
+ comm_pattern = 1;
+ else if(req->call == SIMCALL_COMM_IRECV)
+ comm_pattern = 2;
- xbt_dynar_free(&split);
-
- }
-
- xbt_free(line);
- xbt_free(command);
- pclose(fp);
-
- return location_list;
-}
-
-static dw_frame_t get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){
-
- xbt_dict_cursor_t cursor = NULL;
- char *name;
- dw_frame_t res;
-
- 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;
-
-}
-
-void MC_get_local_variables(const char *elf_file, xbt_dict_t location_list, xbt_dict_t *all_variables){
-
- char *command = bprintf("objdump -Wi %s", elf_file);
-
- FILE *fp = popen(command, "r");
-
- if(fp == NULL)
- perror("popen for objdump failed");
-
- 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;
-
- read = xbt_getline(&line, &n, fp);
-
- while (read != -1) {
+ SIMIX_simcall_pre(req, value);
- 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;
+ MC_SET_RAW_MEM;
+ if(comm_pattern != 0){
+ get_comm_pattern(communications_pattern, req, comm_pattern);
}
+ MC_UNSET_RAW_MEM;
- xbt_str_ltrim(line, NULL);
- xbt_str_strip_spaces(line);
+ comm_pattern = 0;
- if(line[0] != '<'){
- read = xbt_getline(&line, &n, fp);
- continue;
- }
-
- xbt_dynar_free(&split);
- split = xbt_str_split(line, " ");
-
- /* Get node type */
- node_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *);
-
- if(strcmp(node_type, "(DW_TAG_subprogram)") == 0){ /* New frame */
-
- dw_frame_t frame = NULL;
-
- strtok(xbt_dynar_get_as(split, 0, char *), "<");
- subprogram_start = strdup(strtok(NULL, "<"));
- xbt_str_rtrim(subprogram_start, ">:");
-
- read = xbt_getline(&line, &n, fp);
-
- while(read != -1){
-
- 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_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){
-
- 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);
-
- }else if(strcmp(node_type, "DW_AT_name") == 0){
-
- 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);
-
- xbt_dict_set(subprograms_origin, subprogram_start, 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 = 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);
-
- }
-
- }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);
-
- }else if(strcmp(node_type, "DW_AT_high_pc") == 0){
-
- if(frame != NULL)
- frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16);
-
- }else if(strcmp(node_type, "DW_AT_MIPS_linkage_name:") == 0){
+ MC_wait_for_requests();
- 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);
+ 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);
}
-
- read = xbt_getline(&line, &n, fp);
-
- }
-
- 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(key);
}
-
- 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){
-
- 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_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_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 *));
-
- xbt_dict_set(variables_origin, origin, var->name, NULL);
+ }
+ MC_UNSET_RAW_MEM;
- }else if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){
-
- 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);
-
- }else if(strcmp(node_type, "DW_AT_location") == 0){
-
- 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 *);
-
- if(strcmp(location_type, "list)") == 0){ /* Search location in location list */
-
- 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);
-
- }
-
- }
-
- }else if(strcmp(node_type, "DW_AT_external") == 0){
-
- valid_variable = 0;
-
- }
-
- read = xbt_getline(&line, &n, fp);
-
- }
-
- 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);
- }
+ /* Update statistics */
+ mc_stats->visited_states++;
+ mc_stats->executed_transitions++;
- valid_variable = 1;
- new_variable = 0;
+ }
- }else if(strcmp(node_type, "(DW_TAG_inlined_subroutine)") == 0){
+ XBT_DEBUG("**** End Replay ****");
- strtok(xbt_dynar_get_as(split, 0, char *), "<");
- origin = strdup(strtok(NULL, "<"));
- xbt_str_rtrim(origin, ">:");
+ if(raw_mem)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
- read = xbt_getline(&line, &n, fp);
+}
- while(read != -1){
+void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
+{
- /* Wipeout the new line character */
- line[read - 1] = '\0';
+ initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- if(n == 0){
- read = xbt_getline(&line, &n, fp);
- continue;
- }
+ 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;
- if(strlen(line) == 0){
- read = xbt_getline(&line, &n, fp);
- continue;
- }
+ XBT_DEBUG("**** Begin Replay ****");
- 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 *);
+ /* Restore the initial state */
+ MC_restore_snapshot(initial_state_liveness->snapshot);
- if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){
+ /* 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;
- 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(all_stack){
- subroutine_frame->low_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16);
+ item = xbt_fifo_get_last_item(stack);
- }else if(strcmp(node_type, "DW_AT_high_pc") == 0){
+ while(depth <= xbt_fifo_size(stack)){
- subroutine_frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16);
- }
+ pair = (mc_pair_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
- read = xbt_getline(&line, &n, fp);
+ if(pair->requests > 0){
+
+ saved_req = MC_state_get_executed_request(state, &value);
+ //XBT_DEBUG("SavedReq->call %u", saved_req->call);
- }
-
- }else{
-
- read = xbt_getline(&line, &n, fp);
-
- }
-
- }
+ 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);
- xbt_dynar_free(&split);
- xbt_free(line);
- xbt_free(command);
- pclose(fp);
+ /* 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);
+ }
-}
-
-static dw_location_t get_location(xbt_dict_t location_list, char *expr){
-
- dw_location_t loc = xbt_new0(s_dw_location_t, 1);
-
- 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;
-
- }else{
-
- int cursor = 0;
- char *tok = NULL, *tok2 = NULL;
-
- xbt_dynar_t tokens1 = xbt_str_split(expr, ";");
- xbt_dynar_t tokens2;
-
- loc->type = e_dw_compose;
- loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
-
- while(cursor < xbt_dynar_length(tokens1)){
-
- 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*));
- /*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);
+ }
+
+ SIMIX_simcall_pre(req, value);
+ MC_wait_for_requests();
}
- cursor++;
- xbt_dynar_free(&tokens2);
+ depth++;
+
+ /* Update statistics */
+ mc_stats->visited_pairs++;
+ mc_stats->executed_transitions++;
+ item = xbt_fifo_get_prev_item(item);
}
-
- xbt_dynar_free(&tokens1);
- return loc;
-
- }
+ }else{
-}
+ /* Traverse the stack from the initial state and re-execute the transitions */
+ for (item = xbt_fifo_get_last_item(stack);
+ item != xbt_fifo_get_first_item(stack);
+ item = xbt_fifo_get_prev_item(item)) {
+ pair = (mc_pair_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
-void print_local_variables(xbt_dict_t list){
+ 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);
- 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;
+ /* 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);
}
+
}
- break;
- default :
- fprintf(stderr, "Location type not supported\n");
- break;
+
+ SIMIX_simcall_pre(req, value);
+ MC_wait_for_requests();
}
+
+ depth++;
+
+ /* 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;
+
}
-static void MC_get_global_variables(char *elf_file){
+/**
+ * \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);
- FILE *fp;
+ MC_show_stack_safety(stack);
- char *command = bprintf("objdump -t -j .data -j .bss %s", elf_file);
+ if(!_sg_mc_checkpoint){
- fp = popen(command, "r");
+ 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;
- 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);
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
- char *line = NULL;
- ssize_t read;
- size_t n = 0;
- xbt_dynar_t line_tokens = NULL;
- unsigned long offset;
+void MC_show_stack_safety(xbt_fifo_t stack)
+{
- int type = strcmp(elf_file, xbt_binary_name); /* 0 = binary, other = libsimgrid */
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- while ((read = xbt_getline(&line, &n, fp)) != -1){
+ MC_SET_RAW_MEM;
- if(n == 0)
- continue;
+ 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);
+ }
+ }
- /* Wipeout the new line character */
- line[read - 1] = '\0';
+ if(!raw_mem_set)
+ MC_UNSET_RAW_MEM;
+}
- xbt_str_strip_spaces(line);
- xbt_str_ltrim(line, NULL);
+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);
+}
- 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;
+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((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_dump_stack_liveness(xbt_fifo_t stack){
- global_variable_t var = xbt_new0(s_global_variable_t, 1);
+ int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- 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;
- }
+ mc_pair_t pair;
- 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*));
+ MC_SET_RAW_MEM;
+ while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL)
+ MC_pair_delete(pair);
+ MC_UNSET_RAW_MEM;
- 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);
- }
- }
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
- xbt_dynar_free(&line_tokens);
+}
+
+
+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);
+ }
+ if(initial_state_safety != NULL){
+ // XBT_INFO("Communication-deterministic : %s", !initial_state_safety->comm_deterministic ? "No" : "Yes");
+ // XBT_INFO("Send-deterministic : %s", !initial_state_safety->send_deterministic ? "No" : "Yes");
+ }
+ MC_UNSET_RAW_MEM;
+}
+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_free(command);
- xbt_free(line);
- pclose(fp);
+void MC_cut(void){
+ user_max_depth_reached = 1;
+}
+
+void MC_process_clock_add(smx_process_t process, double amount)
+{
+ mc_time[process->pid] += amount;
+}
+double MC_process_clock_get(smx_process_t process)
+{
+ if(mc_time){
+ if(process != NULL)
+ return mc_time[process->pid];
+ else
+ return -1;
+ }else{
+ return 0;
+ }
}
-void global_variable_free(global_variable_t v){
- xbt_free(v->name);
- xbt_free(v);
+void MC_automaton_load(const char *file){
+
+ 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_load(_mc_property_automaton,file);
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
}
-void global_variable_free_voidp(void *v){
- global_variable_free((global_variable_t) * (void **) 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);
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+
}
+
+
+
