1 /* Copyright (c) 2008-2013. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
13 #include "simgrid/sg_config.h"
14 #include "../surf/surf_private.h"
15 #include "../simix/smx_private.h"
16 #include "../xbt/mmalloc/mmprivate.h"
18 #include "mc_private.h"
19 #include "xbt/automaton.h"
22 XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
24 "Logging specific to MC (global)");
26 /* Configuration support */
27 e_mc_reduce_t mc_reduce_kind=e_mc_reduce_unset;
29 int _sg_do_model_check = 0;
30 int _sg_mc_checkpoint=0;
31 char* _sg_mc_property_file=NULL;
33 int _sg_mc_max_depth=1000;
35 char *_sg_mc_dot_output_file = NULL;
37 int user_max_depth_reached = 0;
39 void _mc_cfg_cb_reduce(const char *name, int pos) {
40 if (_sg_cfg_init_status && !_sg_do_model_check) {
41 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.");
43 char *val= xbt_cfg_get_string(_sg_cfg_set, name);
44 if (!strcasecmp(val,"none")) {
45 mc_reduce_kind = e_mc_reduce_none;
46 } else if (!strcasecmp(val,"dpor")) {
47 mc_reduce_kind = e_mc_reduce_dpor;
49 xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name);
53 void _mc_cfg_cb_checkpoint(const char *name, int pos) {
54 if (_sg_cfg_init_status && !_sg_do_model_check) {
55 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.");
57 _sg_mc_checkpoint = xbt_cfg_get_int(_sg_cfg_set, name);
59 void _mc_cfg_cb_property(const char *name, int pos) {
60 if (_sg_cfg_init_status && !_sg_do_model_check) {
61 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.");
63 _sg_mc_property_file= xbt_cfg_get_string(_sg_cfg_set, name);
66 void _mc_cfg_cb_timeout(const char *name, int pos) {
67 if (_sg_cfg_init_status && !_sg_do_model_check) {
68 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.");
70 _sg_mc_timeout= xbt_cfg_get_boolean(_sg_cfg_set, name);
73 void _mc_cfg_cb_max_depth(const char *name, int pos) {
74 if (_sg_cfg_init_status && !_sg_do_model_check) {
75 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.");
77 _sg_mc_max_depth= xbt_cfg_get_int(_sg_cfg_set, name);
80 void _mc_cfg_cb_visited(const char *name, int pos) {
81 if (_sg_cfg_init_status && !_sg_do_model_check) {
82 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.");
84 _sg_mc_visited= xbt_cfg_get_int(_sg_cfg_set, name);
87 void _mc_cfg_cb_dot_output(const char *name, int pos) {
88 if (_sg_cfg_init_status && !_sg_do_model_check) {
89 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.");
91 _sg_mc_dot_output_file= xbt_cfg_get_string(_sg_cfg_set, name);
94 /* MC global data structures */
95 mc_state_t mc_current_state = NULL;
96 char mc_replay_mode = FALSE;
97 double *mc_time = NULL;
98 __thread mc_comparison_times_t mc_comp_times = NULL;
99 __thread double mc_snapshot_comparison_time;
100 mc_stats_t mc_stats = NULL;
103 xbt_fifo_t mc_stack_safety = NULL;
104 mc_global_t initial_state_safety = NULL;
107 xbt_fifo_t mc_stack_liveness = NULL;
108 mc_global_t initial_state_liveness = NULL;
111 xbt_automaton_t _mc_property_automaton = NULL;
114 mc_object_info_t mc_libsimgrid_info = NULL;
115 mc_object_info_t mc_binary_info = NULL;
117 /* Ignore mechanism */
118 extern xbt_dynar_t mc_heap_comparison_ignore;
119 extern xbt_dynar_t stacks_areas;
122 FILE *dot_output = NULL;
123 const char* colors[13];
126 /******************************* DWARF Information *******************************/
127 /**********************************************************************************/
129 /************************** Free functions *************************/
131 static void dw_location_free(dw_location_t l){
133 if(l->type == e_dw_loclist)
134 xbt_dynar_free(&(l->location.loclist));
135 else if(l->type == e_dw_compose)
136 xbt_dynar_free(&(l->location.compose));
137 else if(l->type == e_dw_arithmetic)
138 xbt_free(l->location.arithmetic);
144 static void dw_location_entry_free(dw_location_entry_t e){
145 dw_location_free(e->location);
149 void dw_type_free(dw_type_t t){
151 xbt_free(t->dw_type_id);
152 xbt_dynar_free(&(t->members));
156 static void dw_type_free_voidp(void *t){
157 dw_type_free((dw_type_t) * (void **) t);
160 void dw_variable_free(dw_variable_t v){
163 xbt_free(v->type_origin);
165 dw_location_free(v->address.location);
170 void dw_variable_free_voidp(void *t){
171 dw_variable_free((dw_variable_t) * (void **) t);
176 mc_object_info_t MC_new_object_info(void) {
177 mc_object_info_t res = xbt_new0(s_mc_object_info_t, 1);
178 res->local_variables = xbt_dict_new_homogeneous(NULL);
179 res->global_variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp);
180 res->types = xbt_dict_new_homogeneous(NULL);
181 res->types_by_name = xbt_dict_new_homogeneous(NULL);
185 void MC_free_object_info(mc_object_info_t* info) {
186 xbt_free(&(*info)->file_name);
187 xbt_dict_free(&(*info)->local_variables);
188 xbt_dynar_free(&(*info)->global_variables);
189 xbt_dict_free(&(*info)->types);
190 xbt_dict_free(&(*info)->types_by_name);
195 /*************************************************************************/
197 static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr){
199 dw_location_t loc = xbt_new0(s_dw_location_t, 1);
201 if(location_list != NULL){
203 char *key = bprintf("%d", (int)strtoul(expr, NULL, 16));
204 loc->type = e_dw_loclist;
205 loc->location.loclist = (xbt_dynar_t)xbt_dict_get_or_null(location_list, key);
206 if(loc->location.loclist == NULL)
207 XBT_INFO("Key not found in loclist");
214 char *tok = NULL, *tok2 = NULL;
216 xbt_dynar_t tokens1 = xbt_str_split(expr, ";");
219 loc->type = e_dw_compose;
220 loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
222 while(cursor < xbt_dynar_length(tokens1)){
224 tok = xbt_dynar_get_as(tokens1, cursor, char*);
225 tokens2 = xbt_str_split(tok, " ");
226 tok2 = xbt_dynar_get_as(tokens2, 0, char*);
228 if(strncmp(tok2, "DW_OP_reg", 9) == 0){
229 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
230 new_element->type = e_dw_register;
231 new_element->location.reg = atoi(strtok(tok2, "DW_OP_reg"));
232 xbt_dynar_push(loc->location.compose, &new_element);
233 }else if(strcmp(tok2, "DW_OP_fbreg:") == 0){
234 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
235 new_element->type = e_dw_fbregister_op;
236 new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
237 xbt_dynar_push(loc->location.compose, &new_element);
238 }else if(strncmp(tok2, "DW_OP_breg", 10) == 0){
239 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
240 new_element->type = e_dw_bregister_op;
241 new_element->location.breg_op.reg = atoi(strtok(tok2, "DW_OP_breg"));
242 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
243 xbt_dynar_push(loc->location.compose, &new_element);
244 }else if(strncmp(tok2, "DW_OP_lit", 9) == 0){
245 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
246 new_element->type = e_dw_lit;
247 new_element->location.lit = atoi(strtok(tok2, "DW_OP_lit"));
248 xbt_dynar_push(loc->location.compose, &new_element);
249 }else if(strcmp(tok2, "DW_OP_piece:") == 0){
250 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
251 new_element->type = e_dw_piece;
252 new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
253 xbt_dynar_push(loc->location.compose, &new_element);
254 }else if(strcmp(tok2, "DW_OP_plus_uconst:") == 0){
255 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
256 new_element->type = e_dw_plus_uconst;
257 new_element->location.plus_uconst = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char *));
258 xbt_dynar_push(loc->location.compose, &new_element);
259 }else if(strcmp(tok, "DW_OP_abs") == 0 ||
260 strcmp(tok, "DW_OP_and") == 0 ||
261 strcmp(tok, "DW_OP_div") == 0 ||
262 strcmp(tok, "DW_OP_minus") == 0 ||
263 strcmp(tok, "DW_OP_mod") == 0 ||
264 strcmp(tok, "DW_OP_mul") == 0 ||
265 strcmp(tok, "DW_OP_neg") == 0 ||
266 strcmp(tok, "DW_OP_not") == 0 ||
267 strcmp(tok, "DW_OP_or") == 0 ||
268 strcmp(tok, "DW_OP_plus") == 0){
269 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
270 new_element->type = e_dw_arithmetic;
271 new_element->location.arithmetic = strdup(strtok(tok2, "DW_OP_"));
272 xbt_dynar_push(loc->location.compose, &new_element);
273 }else if(strcmp(tok, "DW_OP_stack_value") == 0){
274 }else if(strcmp(tok2, "DW_OP_deref_size:") == 0){
275 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
276 new_element->type = e_dw_deref;
277 new_element->location.deref_size = (unsigned int short) atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
278 xbt_dynar_push(loc->location.compose, &new_element);
279 }else if(strcmp(tok, "DW_OP_deref") == 0){
280 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
281 new_element->type = e_dw_deref;
282 new_element->location.deref_size = sizeof(void *);
283 xbt_dynar_push(loc->location.compose, &new_element);
284 }else if(strcmp(tok2, "DW_OP_constu:") == 0){
285 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
286 new_element->type = e_dw_uconstant;
287 new_element->location.uconstant.bytes = 1;
288 new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
289 xbt_dynar_push(loc->location.compose, &new_element);
290 }else if(strcmp(tok2, "DW_OP_consts:") == 0){
291 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
292 new_element->type = e_dw_sconstant;
293 new_element->location.sconstant.bytes = 1;
294 new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
295 xbt_dynar_push(loc->location.compose, &new_element);
296 }else if(strcmp(tok2, "DW_OP_const1u:") == 0 ||
297 strcmp(tok2, "DW_OP_const2u:") == 0 ||
298 strcmp(tok2, "DW_OP_const4u:") == 0 ||
299 strcmp(tok2, "DW_OP_const8u:") == 0){
300 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
301 new_element->type = e_dw_uconstant;
302 new_element->location.uconstant.bytes = tok2[11] - '0';
303 new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
304 xbt_dynar_push(loc->location.compose, &new_element);
305 }else if(strcmp(tok, "DW_OP_const1s") == 0 ||
306 strcmp(tok, "DW_OP_const2s") == 0 ||
307 strcmp(tok, "DW_OP_const4s") == 0 ||
308 strcmp(tok, "DW_OP_const8s") == 0){
309 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
310 new_element->type = e_dw_sconstant;
311 new_element->location.sconstant.bytes = tok2[11] - '0';
312 new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
313 xbt_dynar_push(loc->location.compose, &new_element);
315 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
316 new_element->type = e_dw_unsupported;
317 xbt_dynar_push(loc->location.compose, &new_element);
321 xbt_dynar_free(&tokens2);
325 xbt_dynar_free(&tokens1);
334 /** \brief Finds a frame (DW_TAG_subprogram) from an DWARF offset in the rangd of this subprogram
336 * The offset can be an offset of a child DW_TAG_variable.
338 static dw_frame_t MC_dwarf_get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){
340 xbt_dict_cursor_t cursor = NULL;
344 xbt_dict_foreach(all_variables, cursor, name, res) {
345 if(offset >= res->start && offset < res->end){
346 xbt_dict_cursor_free(&cursor);
351 xbt_dict_cursor_free(&cursor);
356 static dw_variable_t MC_dwarf_get_variable_by_name(dw_frame_t frame, char *var){
358 unsigned int cursor = 0;
359 dw_variable_t current_var;
361 xbt_dynar_foreach(frame->variables, cursor, current_var){
362 if(strcmp(var, current_var->name) == 0)
369 static int MC_dwarf_get_variable_index(xbt_dynar_t variables, char* var, void *address){
371 if(xbt_dynar_is_empty(variables))
374 unsigned int cursor = 0;
376 int end = xbt_dynar_length(variables) - 1;
377 dw_variable_t var_test = NULL;
380 cursor = (start + end) / 2;
381 var_test = (dw_variable_t)xbt_dynar_get_as(variables, cursor, dw_variable_t);
382 if(strcmp(var_test->name, var) < 0){
384 }else if(strcmp(var_test->name, var) > 0){
387 if(address){ /* global variable */
388 if(var_test->address.address == address)
390 if(var_test->address.address > address)
394 }else{ /* local variable */
400 if(strcmp(var_test->name, var) == 0){
401 if(address && var_test->address.address < address)
405 }else if(strcmp(var_test->name, var) < 0)
412 void MC_dwarf_register_global_variable(mc_object_info_t info, dw_variable_t variable) {
413 int index = MC_dwarf_get_variable_index(info->global_variables, variable->name, variable->address.address);
415 xbt_dynar_insert_at(info->global_variables, index, &variable);
419 void MC_dwarf_register_non_global_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable) {
420 xbt_assert(frame, "Frame is NULL");
421 int index = MC_dwarf_get_variable_index(frame->variables, variable->name, NULL);
423 xbt_dynar_insert_at(frame->variables, index, &variable);
427 void MC_dwarf_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable) {
429 MC_dwarf_register_global_variable(info, variable);
431 xbt_die("No frame for this local variable");
433 MC_dwarf_register_non_global_variable(info, frame, variable);
437 /******************************* Ignore mechanism *******************************/
438 /*********************************************************************************/
440 xbt_dynar_t mc_checkpoint_ignore;
442 typedef struct s_mc_stack_ignore_variable{
445 }s_mc_stack_ignore_variable_t, *mc_stack_ignore_variable_t;
447 /**************************** Free functions ******************************/
449 static void stack_ignore_variable_free(mc_stack_ignore_variable_t v){
450 xbt_free(v->var_name);
455 static void stack_ignore_variable_free_voidp(void *v){
456 stack_ignore_variable_free((mc_stack_ignore_variable_t) * (void **) v);
459 void heap_ignore_region_free(mc_heap_ignore_region_t r){
463 void heap_ignore_region_free_voidp(void *r){
464 heap_ignore_region_free((mc_heap_ignore_region_t) * (void **) r);
467 static void checkpoint_ignore_region_free(mc_checkpoint_ignore_region_t r){
471 static void checkpoint_ignore_region_free_voidp(void *r){
472 checkpoint_ignore_region_free((mc_checkpoint_ignore_region_t) * (void **) r);
475 /***********************************************************************/
477 void MC_ignore_heap(void *address, size_t size){
479 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
483 mc_heap_ignore_region_t region = NULL;
484 region = xbt_new0(s_mc_heap_ignore_region_t, 1);
485 region->address = address;
488 region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
490 if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){
491 region->fragment = -1;
492 ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_block.ignore++;
494 region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type;
495 ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_frag.ignore[region->fragment]++;
498 if(mc_heap_comparison_ignore == NULL){
499 mc_heap_comparison_ignore = xbt_dynar_new(sizeof(mc_heap_ignore_region_t), heap_ignore_region_free_voidp);
500 xbt_dynar_push(mc_heap_comparison_ignore, ®ion);
506 unsigned int cursor = 0;
507 mc_heap_ignore_region_t current_region = NULL;
509 int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1;
512 cursor = (start + end) / 2;
513 current_region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t);
514 if(current_region->address == address){
515 heap_ignore_region_free(region);
519 }else if(current_region->address < address){
526 if(current_region->address < address)
527 xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor + 1, ®ion);
529 xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor, ®ion);
535 void MC_remove_ignore_heap(void *address, size_t size){
537 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
541 unsigned int cursor = 0;
543 int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1;
544 mc_heap_ignore_region_t region;
545 int ignore_found = 0;
548 cursor = (start + end) / 2;
549 region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t);
550 if(region->address == address){
553 }else if(region->address < address){
556 if((char * )region->address <= ((char *)address + size)){
565 if(ignore_found == 1){
566 xbt_dynar_remove_at(mc_heap_comparison_ignore, cursor, NULL);
567 MC_remove_ignore_heap(address, size);
575 void MC_ignore_global_variable(const char *name){
577 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
581 xbt_assert(mc_libsimgrid_info, "MC subsystem not initialized");
583 unsigned int cursor = 0;
584 dw_variable_t current_var;
586 int end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1;
589 cursor = (start + end) /2;
590 current_var = (dw_variable_t)xbt_dynar_get_as(mc_libsimgrid_info->global_variables, cursor, dw_variable_t);
591 if(strcmp(current_var->name, name) == 0){
592 xbt_dynar_remove_at(mc_libsimgrid_info->global_variables, cursor, NULL);
594 end = xbt_dynar_length(mc_libsimgrid_info->global_variables) - 1;
595 }else if(strcmp(current_var->name, name) < 0){
606 void MC_ignore_local_variable(const char *var_name, const char *frame_name){
608 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
612 unsigned int cursor = 0;
613 dw_variable_t current_var;
615 if(strcmp(frame_name, "*") == 0){ /* Remove variable in all frames */
616 xbt_dict_cursor_t dict_cursor;
617 char *current_frame_name;
619 xbt_dict_foreach(mc_libsimgrid_info->local_variables, dict_cursor, current_frame_name, frame){
621 end = xbt_dynar_length(frame->variables) - 1;
623 cursor = (start + end) / 2;
624 current_var = (dw_variable_t)xbt_dynar_get_as(frame->variables, cursor, dw_variable_t);
625 if(strcmp(current_var->name, var_name) == 0){
626 xbt_dynar_remove_at(frame->variables, cursor, NULL);
628 end = xbt_dynar_length(frame->variables) - 1;
629 }else if(strcmp(current_var->name, var_name) < 0){
636 xbt_dict_foreach(mc_binary_info->local_variables, dict_cursor, current_frame_name, frame){
638 end = xbt_dynar_length(frame->variables) - 1;
640 cursor = (start + end) / 2;
641 current_var = (dw_variable_t)xbt_dynar_get_as(frame->variables, cursor, dw_variable_t);
642 if(strcmp(current_var->name, var_name) == 0){
643 xbt_dynar_remove_at(frame->variables, cursor, NULL);
645 end = xbt_dynar_length(frame->variables) - 1;
646 }else if(strcmp(current_var->name, var_name) < 0){
654 xbt_dynar_t variables_list = ((dw_frame_t)xbt_dict_get_or_null(
655 mc_libsimgrid_info->local_variables, frame_name))->variables;
657 end = xbt_dynar_length(variables_list) - 1;
659 cursor = (start + end) / 2;
660 current_var = (dw_variable_t)xbt_dynar_get_as(variables_list, cursor, dw_variable_t);
661 if(strcmp(current_var->name, var_name) == 0){
662 xbt_dynar_remove_at(variables_list, cursor, NULL);
664 end = xbt_dynar_length(variables_list) - 1;
665 }else if(strcmp(current_var->name, var_name) < 0){
678 void MC_new_stack_area(void *stack, char *name, void* context, size_t size){
680 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
684 if(stacks_areas == NULL)
685 stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL);
687 stack_region_t region = NULL;
688 region = xbt_new0(s_stack_region_t, 1);
689 region->address = stack;
690 region->process_name = strdup(name);
691 region->context = context;
693 region->block = ((char*)stack - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
694 xbt_dynar_push(stacks_areas, ®ion);
700 void MC_ignore(void *addr, size_t size){
702 int raw_mem_set= (mmalloc_get_current_heap() == raw_heap);
706 if(mc_checkpoint_ignore == NULL)
707 mc_checkpoint_ignore = xbt_dynar_new(sizeof(mc_checkpoint_ignore_region_t), checkpoint_ignore_region_free_voidp);
709 mc_checkpoint_ignore_region_t region = xbt_new0(s_mc_checkpoint_ignore_region_t, 1);
713 if(xbt_dynar_is_empty(mc_checkpoint_ignore)){
714 xbt_dynar_push(mc_checkpoint_ignore, ®ion);
717 unsigned int cursor = 0;
719 int end = xbt_dynar_length(mc_checkpoint_ignore) -1;
720 mc_checkpoint_ignore_region_t current_region = NULL;
723 cursor = (start + end) / 2;
724 current_region = (mc_checkpoint_ignore_region_t)xbt_dynar_get_as(mc_checkpoint_ignore, cursor, mc_checkpoint_ignore_region_t);
725 if(current_region->addr == addr){
726 if(current_region->size == size){
727 checkpoint_ignore_region_free(region);
731 }else if(current_region->size < size){
736 }else if(current_region->addr < addr){
743 if(current_region->addr == addr){
744 if(current_region->size < size){
745 xbt_dynar_insert_at(mc_checkpoint_ignore, cursor + 1, ®ion);
747 xbt_dynar_insert_at(mc_checkpoint_ignore, cursor, ®ion);
749 }else if(current_region->addr < addr){
750 xbt_dynar_insert_at(mc_checkpoint_ignore, cursor + 1, ®ion);
752 xbt_dynar_insert_at(mc_checkpoint_ignore, cursor, ®ion);
760 /******************************* Initialisation of MC *******************************/
761 /*********************************************************************************/
763 static void MC_init_debug_info();
764 static void MC_init_debug_info() {
765 XBT_INFO("Get debug information ...");
767 memory_map_t maps = MC_get_memory_map();
769 /* Get local variables for state equality detection */
770 mc_binary_info = MC_find_object_info(maps, xbt_binary_name);
771 mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path);
773 MC_free_memory_map(maps);
774 XBT_INFO("Get debug information done !");
779 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
783 /* Initialize the data structures that must be persistent across every
784 iteration of the model-checker (in RAW memory) */
788 MC_init_memory_map_info();
789 MC_init_debug_info();
792 parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT);
796 /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */
797 MC_ignore_local_variable("e", "*");
798 MC_ignore_local_variable("__ex_cleanup", "*");
799 MC_ignore_local_variable("__ex_mctx_en", "*");
800 MC_ignore_local_variable("__ex_mctx_me", "*");
801 MC_ignore_local_variable("__xbt_ex_ctx_ptr", "*");
802 MC_ignore_local_variable("_log_ev", "*");
803 MC_ignore_local_variable("_throw_ctx", "*");
804 MC_ignore_local_variable("ctx", "*");
806 MC_ignore_local_variable("next_context", "smx_ctx_sysv_suspend_serial");
807 MC_ignore_local_variable("i", "smx_ctx_sysv_suspend_serial");
809 /* Ignore local variable about time used for tracing */
810 MC_ignore_local_variable("start_time", "*");
812 MC_ignore_global_variable("mc_comp_times");
813 MC_ignore_global_variable("mc_snapshot_comparison_time");
814 MC_ignore_global_variable("mc_time");
815 MC_ignore_global_variable("smpi_current_rank");
816 MC_ignore_global_variable("counter"); /* Static variable used for tracing */
817 MC_ignore_global_variable("maestro_stack_start");
818 MC_ignore_global_variable("maestro_stack_end");
819 MC_ignore_global_variable("smx_total_comms");
821 MC_ignore_heap(&(simix_global->process_to_run), sizeof(simix_global->process_to_run));
822 MC_ignore_heap(&(simix_global->process_that_ran), sizeof(simix_global->process_that_ran));
823 MC_ignore_heap(simix_global->process_to_run, sizeof(*(simix_global->process_to_run)));
824 MC_ignore_heap(simix_global->process_that_ran, sizeof(*(simix_global->process_that_ran)));
826 smx_process_t process;
827 xbt_swag_foreach(process, simix_global->process_list){
828 MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup));
836 static void MC_init_dot_output(){ /* FIXME : more colors */
840 colors[2] = "green3";
841 colors[3] = "goldenrod";
843 colors[5] = "purple";
844 colors[6] = "magenta";
845 colors[7] = "turquoise4";
846 colors[8] = "gray25";
847 colors[9] = "forestgreen";
848 colors[10] = "hotpink";
849 colors[11] = "lightblue";
852 dot_output = fopen(_sg_mc_dot_output_file, "w");
854 if(dot_output == NULL){
855 perror("Error open dot output file");
859 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");
863 /******************************* Core of MC *******************************/
864 /**************************************************************************/
866 void MC_do_the_modelcheck_for_real() {
869 mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1);
872 if (!_sg_mc_property_file || _sg_mc_property_file[0]=='\0') {
873 if (mc_reduce_kind==e_mc_reduce_unset)
874 mc_reduce_kind=e_mc_reduce_dpor;
876 XBT_INFO("Check a safety property");
877 MC_modelcheck_safety();
881 if (mc_reduce_kind==e_mc_reduce_unset)
882 mc_reduce_kind=e_mc_reduce_none;
884 XBT_INFO("Check the liveness property %s",_sg_mc_property_file);
885 MC_automaton_load(_sg_mc_property_file);
886 MC_modelcheck_liveness();
890 void MC_modelcheck_safety(void)
892 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
894 /* Check if MC is already initialized */
895 if (initial_state_safety)
898 mc_time = xbt_new0(double, simix_process_maxpid);
900 /* mc_time refers to clock for each process -> ignore it for heap comparison */
901 MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double));
903 /* Initialize the data structures that must be persistent across every
904 iteration of the model-checker (in RAW memory) */
908 /* Initialize statistics */
909 mc_stats = xbt_new0(s_mc_stats_t, 1);
910 mc_stats->state_size = 1;
912 /* Create exploration stack */
913 mc_stack_safety = xbt_fifo_new();
915 if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0'))
916 MC_init_dot_output();
920 if(_sg_mc_visited > 0){
924 MC_init_memory_map_info();
925 MC_init_debug_info();
932 /* Save the initial state */
933 initial_state_safety = xbt_new0(s_mc_global_t, 1);
934 initial_state_safety->snapshot = MC_take_snapshot(0);
935 initial_state_safety->initial_communications_pattern_done = 0;
936 initial_state_safety->comm_deterministic = 1;
937 initial_state_safety->send_deterministic = 1;
949 void MC_modelcheck_liveness(){
951 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
955 mc_time = xbt_new0(double, simix_process_maxpid);
957 /* mc_time refers to clock for each process -> ignore it for heap comparison */
958 MC_ignore_heap(mc_time, simix_process_maxpid * sizeof(double));
962 /* Initialize statistics */
963 mc_stats = xbt_new0(s_mc_stats_t, 1);
964 mc_stats->state_size = 1;
966 /* Create exploration stack */
967 mc_stack_liveness = xbt_fifo_new();
969 /* Create the initial state */
970 initial_state_liveness = xbt_new0(s_mc_global_t, 1);
972 if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0'))
973 MC_init_dot_output();
980 MC_print_statistics(mc_stats);
997 int SIMIX_pre_mc_random(smx_simcall_t simcall, int min, int max){
999 return simcall->mc_value;
1003 int MC_random(int min, int max)
1005 /*FIXME: return mc_current_state->executed_transition->random.value;*/
1006 return simcall_mc_random(min, max);
1010 * \brief Schedules all the process that are ready to run
1012 void MC_wait_for_requests(void)
1014 smx_process_t process;
1018 while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
1019 SIMIX_process_runall();
1020 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
1021 req = &process->simcall;
1022 if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
1023 SIMIX_simcall_pre(req, 0);
1028 int MC_deadlock_check()
1030 int deadlock = FALSE;
1031 smx_process_t process;
1032 if(xbt_swag_size(simix_global->process_list)){
1034 xbt_swag_foreach(process, simix_global->process_list){
1035 if(process->simcall.call != SIMCALL_NONE
1036 && MC_request_is_enabled(&process->simcall)){
1046 * \brief Re-executes from the state at position start all the transitions indicated by
1047 * a given model-checker stack.
1048 * \param stack The stack with the transitions to execute.
1049 * \param start Start index to begin the re-execution.
1051 void MC_replay(xbt_fifo_t stack, int start)
1053 int raw_mem = (mmalloc_get_current_heap() == raw_heap);
1055 int value, i = 1, count = 1;
1057 smx_simcall_t req = NULL, saved_req = NULL;
1058 xbt_fifo_item_t item, start_item;
1060 smx_process_t process = NULL;
1061 int comm_pattern = 0;
1063 XBT_DEBUG("**** Begin Replay ****");
1066 /* Restore the initial state */
1067 MC_restore_snapshot(initial_state_safety->snapshot);
1068 /* At the moment of taking the snapshot the raw heap was set, so restoring
1069 * it will set it back again, we have to unset it to continue */
1073 start_item = xbt_fifo_get_last_item(stack);
1076 start_item = xbt_fifo_get_prev_item(start_item);
1082 xbt_dict_reset(first_enabled_state);
1083 xbt_swag_foreach(process, simix_global->process_list){
1084 if(MC_process_is_enabled(process)){
1085 char *key = bprintf("%lu", process->pid);
1086 char *data = bprintf("%d", count);
1087 xbt_dict_set(first_enabled_state, key, data, NULL);
1091 xbt_dynar_reset(communications_pattern);
1095 /* Traverse the stack from the state at position start and re-execute the transitions */
1096 for (item = start_item;
1097 item != xbt_fifo_get_first_item(stack);
1098 item = xbt_fifo_get_prev_item(item)) {
1100 state = (mc_state_t) xbt_fifo_get_item_content(item);
1101 saved_req = MC_state_get_executed_request(state, &value);
1104 char *key = bprintf("%lu", saved_req->issuer->pid);
1105 xbt_dict_remove(first_enabled_state, key);
1110 /* because we got a copy of the executed request, we have to fetch the
1111 real one, pointed by the request field of the issuer process */
1112 req = &saved_req->issuer->simcall;
1114 /* Debug information */
1115 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
1116 req_str = MC_request_to_string(req, value);
1117 XBT_DEBUG("Replay: %s (%p)", req_str, state);
1122 if(req->call == SIMCALL_COMM_ISEND)
1124 else if(req->call == SIMCALL_COMM_IRECV)
1127 SIMIX_simcall_pre(req, value);
1130 if(comm_pattern != 0){
1131 get_comm_pattern(communications_pattern, req, comm_pattern);
1137 MC_wait_for_requests();
1142 /* Insert in dict all enabled processes */
1143 xbt_swag_foreach(process, simix_global->process_list){
1144 if(MC_process_is_enabled(process) /*&& !MC_state_process_is_done(state, process)*/){
1145 char *key = bprintf("%lu", process->pid);
1146 if(xbt_dict_get_or_null(first_enabled_state, key) == NULL){
1147 char *data = bprintf("%d", count);
1148 xbt_dict_set(first_enabled_state, key, data, NULL);
1155 /* Update statistics */
1156 mc_stats->visited_states++;
1157 mc_stats->executed_transitions++;
1161 XBT_DEBUG("**** End Replay ****");
1171 void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
1174 initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
1178 smx_simcall_t req = NULL, saved_req = NULL;
1179 xbt_fifo_item_t item;
1184 XBT_DEBUG("**** Begin Replay ****");
1186 /* Restore the initial state */
1187 MC_restore_snapshot(initial_state_liveness->snapshot);
1189 /* At the moment of taking the snapshot the raw heap was set, so restoring
1190 * it will set it back again, we have to unset it to continue */
1191 if(!initial_state_liveness->raw_mem_set)
1196 item = xbt_fifo_get_last_item(stack);
1198 while(depth <= xbt_fifo_size(stack)){
1200 pair = (mc_pair_t) xbt_fifo_get_item_content(item);
1201 state = (mc_state_t) pair->graph_state;
1203 if(pair->requests > 0){
1205 saved_req = MC_state_get_executed_request(state, &value);
1206 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
1208 if(saved_req != NULL){
1209 /* because we got a copy of the executed request, we have to fetch the
1210 real one, pointed by the request field of the issuer process */
1211 req = &saved_req->issuer->simcall;
1212 //XBT_DEBUG("Req->call %u", req->call);
1214 /* Debug information */
1215 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
1216 req_str = MC_request_to_string(req, value);
1217 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
1223 SIMIX_simcall_pre(req, value);
1224 MC_wait_for_requests();
1229 /* Update statistics */
1230 mc_stats->visited_pairs++;
1231 mc_stats->executed_transitions++;
1233 item = xbt_fifo_get_prev_item(item);
1238 /* Traverse the stack from the initial state and re-execute the transitions */
1239 for (item = xbt_fifo_get_last_item(stack);
1240 item != xbt_fifo_get_first_item(stack);
1241 item = xbt_fifo_get_prev_item(item)) {
1243 pair = (mc_pair_t) xbt_fifo_get_item_content(item);
1244 state = (mc_state_t) pair->graph_state;
1246 if(pair->requests > 0){
1248 saved_req = MC_state_get_executed_request(state, &value);
1249 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
1251 if(saved_req != NULL){
1252 /* because we got a copy of the executed request, we have to fetch the
1253 real one, pointed by the request field of the issuer process */
1254 req = &saved_req->issuer->simcall;
1255 //XBT_DEBUG("Req->call %u", req->call);
1257 /* Debug information */
1258 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
1259 req_str = MC_request_to_string(req, value);
1260 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
1266 SIMIX_simcall_pre(req, value);
1267 MC_wait_for_requests();
1272 /* Update statistics */
1273 mc_stats->visited_pairs++;
1274 mc_stats->executed_transitions++;
1278 XBT_DEBUG("**** End Replay ****");
1280 if(initial_state_liveness->raw_mem_set)
1288 * \brief Dumps the contents of a model-checker's stack and shows the actual
1290 * \param stack The stack to dump
1292 void MC_dump_stack_safety(xbt_fifo_t stack)
1295 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
1297 MC_show_stack_safety(stack);
1299 if(!_sg_mc_checkpoint){
1304 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
1305 MC_state_delete(state);
1318 void MC_show_stack_safety(xbt_fifo_t stack)
1321 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
1327 xbt_fifo_item_t item;
1329 char *req_str = NULL;
1331 for (item = xbt_fifo_get_last_item(stack);
1332 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
1333 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
1334 req = MC_state_get_executed_request(state, &value);
1336 req_str = MC_request_to_string(req, value);
1337 XBT_INFO("%s", req_str);
1346 void MC_show_deadlock(smx_simcall_t req)
1348 /*char *req_str = NULL;*/
1349 XBT_INFO("**************************");
1350 XBT_INFO("*** DEAD-LOCK DETECTED ***");
1351 XBT_INFO("**************************");
1352 XBT_INFO("Locked request:");
1353 /*req_str = MC_request_to_string(req);
1354 XBT_INFO("%s", req_str);
1355 xbt_free(req_str);*/
1356 XBT_INFO("Counter-example execution trace:");
1357 MC_dump_stack_safety(mc_stack_safety);
1358 MC_print_statistics(mc_stats);
1362 void MC_show_stack_liveness(xbt_fifo_t stack){
1365 xbt_fifo_item_t item;
1367 char *req_str = NULL;
1369 for (item = xbt_fifo_get_last_item(stack);
1370 (item ? (pair = (mc_pair_t) (xbt_fifo_get_item_content(item)))
1371 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
1372 req = MC_state_get_executed_request(pair->graph_state, &value);
1374 if(pair->requests>0){
1375 req_str = MC_request_to_string(req, value);
1376 XBT_INFO("%s", req_str);
1379 XBT_INFO("End of system requests but evolution in Büchi automaton");
1385 void MC_dump_stack_liveness(xbt_fifo_t stack){
1387 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
1392 while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL)
1393 MC_pair_delete(pair);
1402 void MC_print_statistics(mc_stats_t stats)
1404 if(stats->expanded_pairs == 0){
1405 XBT_INFO("Expanded states = %lu", stats->expanded_states);
1406 XBT_INFO("Visited states = %lu", stats->visited_states);
1408 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
1409 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
1411 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
1413 if((_sg_mc_dot_output_file != NULL) && (_sg_mc_dot_output_file[0]!='\0')){
1414 fprintf(dot_output, "}\n");
1417 if(initial_state_safety != NULL){
1418 // XBT_INFO("Communication-deterministic : %s", !initial_state_safety->comm_deterministic ? "No" : "Yes");
1419 // XBT_INFO("Send-deterministic : %s", !initial_state_safety->send_deterministic ? "No" : "Yes");
1424 void MC_assert(int prop)
1426 if (MC_is_active() && !prop){
1427 XBT_INFO("**************************");
1428 XBT_INFO("*** PROPERTY NOT VALID ***");
1429 XBT_INFO("**************************");
1430 XBT_INFO("Counter-example execution trace:");
1431 MC_dump_stack_safety(mc_stack_safety);
1432 MC_print_statistics(mc_stats);
1438 user_max_depth_reached = 1;
1441 void MC_process_clock_add(smx_process_t process, double amount)
1443 mc_time[process->pid] += amount;
1446 double MC_process_clock_get(smx_process_t process)
1450 return mc_time[process->pid];
1458 void MC_automaton_load(const char *file){
1460 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
1464 if (_mc_property_automaton == NULL)
1465 _mc_property_automaton = xbt_automaton_new();
1467 xbt_automaton_load(_mc_property_automaton,file);
1476 void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
1478 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
1482 if (_mc_property_automaton == NULL)
1483 _mc_property_automaton = xbt_automaton_new();
1485 xbt_automaton_propositional_symbol_new(_mc_property_automaton,id,fct);