1 /* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "mc_private.h"
8 #include "xbt/mmalloc.h"
10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_compare, mc,
11 "Logging specific to mc_compare");
13 static int data_bss_program_region_compare(void *d1, void *d2, size_t size);
14 static int data_bss_libsimgrid_region_compare(void *d1, void *d2, size_t size);
15 static int heap_region_compare(void *d1, void *d2, size_t size);
17 static int compare_stack(stack_region_t s1, stack_region_t s2, void *sp1, void *sp2, void *heap1, void *heap2, xbt_dynar_t equals);
18 static int is_heap_equality(xbt_dynar_t equals, void *a1, void *a2);
19 static size_t heap_ignore_size(void *address);
20 static size_t data_bss_ignore_size(void *address);
22 static void stack_region_free(stack_region_t s);
23 static void heap_equality_free(heap_equality_t e);
25 static int is_stack_ignore_variable(char *frame, char *var_name);
26 static int compare_local_variables(char *s1, char *s2, xbt_dynar_t heap_equals);
28 static size_t heap_ignore_size(void *address){
29 unsigned int cursor = 0;
31 int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1;
32 mc_heap_ignore_region_t region;
35 cursor = (start + end) / 2;
36 region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t);
37 if(region->address == address)
39 if(region->address < address)
41 if(region->address > address)
48 static size_t data_bss_ignore_size(void *address){
49 unsigned int cursor = 0;
51 int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1;
52 mc_data_bss_ignore_variable_t var;
55 cursor = (start + end) / 2;
56 var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t);
57 if(var->address == address)
59 if(var->address < address){
60 if((void *)((char *)var->address + var->size) > address)
61 return (char *)var->address + var->size - (char*)address;
65 if(var->address > address)
72 static int data_bss_program_region_compare(void *d1, void *d2, size_t size){
74 size_t i = 0, ignore_size = 0;
76 void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
78 for(i=0; i<size; i++){
79 if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
80 if((ignore_size = data_bss_ignore_size((char *)start_data_binary+i)) > 0){
83 }else if((ignore_size = data_bss_ignore_size((char *)start_bss_binary+i)) > 0){
87 pointer_align = (i / sizeof(void*)) * sizeof(void*);
88 addr_pointed1 = *((void **)((char *)d1 + pointer_align));
89 addr_pointed2 = *((void **)((char *)d2 + pointer_align));
90 if((addr_pointed1 > start_plt_binary && addr_pointed1 < end_plt_binary) || (addr_pointed2 > start_plt_binary && addr_pointed2 < end_plt_binary)){
93 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose)){
94 XBT_VERB("Different byte (offset=%zu) (%p - %p) in data program region", i, (char *)d1 + i, (char *)d2 + i);
95 XBT_VERB("Addresses pointed : %p - %p", addr_pointed1, addr_pointed2);
105 static int data_bss_libsimgrid_region_compare(void *d1, void *d2, size_t size){
107 size_t i = 0, ignore_size = 0;
109 void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
111 for(i=0; i<size; i++){
112 if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
113 if((ignore_size = data_bss_ignore_size((char *)start_data_libsimgrid+i)) > 0){
116 }else if((ignore_size = data_bss_ignore_size((char *)start_bss_libsimgrid+i)) > 0){
120 pointer_align = (i / sizeof(void*)) * sizeof(void*);
121 addr_pointed1 = *((void **)((char *)d1 + pointer_align));
122 addr_pointed2 = *((void **)((char *)d2 + pointer_align));
123 if((addr_pointed1 > start_plt_libsimgrid && addr_pointed1 < end_plt_libsimgrid) || (addr_pointed2 > start_plt_libsimgrid && addr_pointed2 < end_plt_libsimgrid)){
125 }else if(addr_pointed1 >= raw_heap && addr_pointed1 <= end_raw_heap && addr_pointed2 >= raw_heap && addr_pointed2 <= end_raw_heap){
128 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose)){
129 XBT_VERB("Different byte (offset=%zu) (%p - %p) in libsimgrid region", i, (char *)d1 + i, (char *)d2 + i);
130 XBT_VERB("Addresses pointed : %p - %p", addr_pointed1, addr_pointed2);
140 static int heap_region_compare(void *d1, void *d2, size_t size){
144 for(i=0; i<size; i++){
145 if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
146 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose)){
147 XBT_VERB("Different byte (offset=%zu) (%p - %p) in heap region", i, (char *)d1 + i, (char *)d2 + i);
156 static void stack_region_free(stack_region_t s){
158 xbt_free(s->process_name);
163 void stack_region_free_voidp(void *s){
164 stack_region_free((stack_region_t) * (void **) s);
167 static void heap_equality_free(heap_equality_t e){
173 void heap_equality_free_voidp(void *e){
174 heap_equality_free((heap_equality_t) * (void **) e);
177 int SIMIX_pre_mc_compare_snapshots(smx_simcall_t simcall,
178 mc_snapshot_t s1, mc_snapshot_t s2){
179 return snapshot_compare(s1, s2, NULL, NULL);
182 int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2, mc_comparison_times_t ct1, mc_comparison_times_t ct2){
184 int raw_mem = (mmalloc_get_current_heap() == raw_heap);
188 int errors = 0, i = 0;
190 if(s1->num_reg != s2->num_reg){
191 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose)){
192 XBT_VERB("Different num_reg (s1 = %u, s2 = %u)", s1->num_reg, s2->num_reg);
199 int heap_index = 0, data_libsimgrid_index = 0, data_program_index = 0;
201 /* Get index of regions */
202 while(i < s1->num_reg){
203 switch(s1->regions[i]->type){
209 data_libsimgrid_index = i;
211 while( i < s1->num_reg && s1->regions[i]->type == 1)
215 data_program_index = i;
217 while( i < s1->num_reg && s1->regions[i]->type == 2)
224 ct1->nb_comparisons++;
226 ct2->nb_comparisons++;
228 xbt_os_timer_t global_timer = xbt_os_timer_new();
229 xbt_os_timer_t timer = xbt_os_timer_new();
231 xbt_os_timer_start(global_timer);
233 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
234 xbt_os_timer_start(timer);
236 /* Compare number of blocks/fragments used in each heap */
237 size_t chunks_used1 = mmalloc_get_chunks_used((xbt_mheap_t)s1->regions[heap_index]->data);
238 size_t chunks_used2 = mmalloc_get_chunks_used((xbt_mheap_t)s2->regions[heap_index]->data);
239 if(chunks_used1 != chunks_used2){
240 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
241 xbt_os_timer_stop(timer);
243 xbt_dynar_push_as(ct1->chunks_used_comparison_times, double, xbt_os_timer_elapsed(timer));
245 xbt_dynar_push_as(ct2->chunks_used_comparison_times, double, xbt_os_timer_elapsed(timer));
246 XBT_DEBUG("Different number of chunks used in each heap : %zu - %zu", chunks_used1, chunks_used2);
249 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
250 XBT_VERB("Different number of chunks used in each heap : %zu - %zu", chunks_used1, chunks_used2);
252 xbt_os_timer_free(timer);
253 xbt_os_timer_stop(global_timer);
255 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
257 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
258 xbt_os_timer_free(global_timer);
266 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
267 xbt_os_timer_stop(timer);
270 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
271 xbt_os_timer_start(timer);
273 /* Compare size of stacks */
274 unsigned int cursor = 0;
275 void *addr_stack1, *addr_stack2;
277 size_t size_used1, size_used2;
279 while(cursor < xbt_dynar_length(stacks_areas)){
280 addr_stack1 = (char *)s1->regions[heap_index]->data + ((char *)((stack_region_t)xbt_dynar_get_as(stacks_areas, cursor, stack_region_t))->address - (char *)std_heap);
281 addr_stack2 = (char *)s2->regions[heap_index]->data + ((char *)((stack_region_t)xbt_dynar_get_as(stacks_areas, cursor, stack_region_t))->address - (char *)std_heap);
282 sp1 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s1->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
283 sp2 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s2->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
284 size_used1 = ((stack_region_t)xbt_dynar_get_as(stacks_areas, cursor, stack_region_t))->size - ((char*)sp1 - (char*)addr_stack1);
285 size_used2 = ((stack_region_t)xbt_dynar_get_as(stacks_areas, cursor, stack_region_t))->size - ((char*)sp2 - (char*)addr_stack2);
286 if(size_used1 != size_used2){
287 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
289 xbt_os_timer_stop(timer);
291 xbt_dynar_push_as(ct1->stacks_sizes_comparison_times, double, xbt_os_timer_elapsed(timer));
293 xbt_dynar_push_as(ct2->stacks_sizes_comparison_times, double, xbt_os_timer_elapsed(timer));
295 XBT_DEBUG("Different size used in stacks : %zu - %zu", size_used1, size_used2);
299 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
300 XBT_VERB("Different size used in stacks : %zu - %zu", size_used1, size_used2);
302 xbt_os_timer_free(timer);
303 xbt_os_timer_stop(global_timer);
305 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
307 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
308 xbt_os_timer_free(global_timer);
319 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
321 xbt_os_timer_stop(timer);
322 xbt_os_timer_start(timer);
325 /* Compare program data segment(s) */
327 i = data_program_index;
328 while(i < s1->num_reg && s1->regions[i]->type == 2){
329 if(data_bss_program_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
330 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
332 xbt_os_timer_stop(timer);
334 xbt_dynar_push_as(ct1->program_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
336 xbt_dynar_push_as(ct2->program_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
338 XBT_DEBUG("Different memcmp for data in program");
342 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
343 XBT_VERB("Different memcmp for data in program");
345 xbt_os_timer_free(timer);
346 xbt_os_timer_stop(global_timer);
348 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
350 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
351 xbt_os_timer_free(global_timer);
361 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
363 xbt_os_timer_stop(timer);
364 xbt_os_timer_start(timer);
367 /* Compare libsimgrid data segment(s) */
369 i = data_libsimgrid_index;
370 while(i < s1->num_reg && s1->regions[i]->type == 1){
371 if(data_bss_libsimgrid_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
372 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
374 xbt_os_timer_stop(timer);
376 xbt_dynar_push_as(ct1->libsimgrid_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
378 xbt_dynar_push_as(ct2->libsimgrid_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
380 XBT_DEBUG("Different memcmp for data in libsimgrid");
384 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
385 XBT_VERB("Different memcmp for data in libsimgrid");
387 xbt_os_timer_free(timer);
388 xbt_os_timer_stop(global_timer);
390 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
392 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
393 xbt_os_timer_free(global_timer);
403 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
405 xbt_os_timer_stop(timer);
406 xbt_os_timer_start(timer);
410 xbt_dynar_t stacks1 = xbt_dynar_new(sizeof(stack_region_t), stack_region_free_voidp);
411 xbt_dynar_t stacks2 = xbt_dynar_new(sizeof(stack_region_t), stack_region_free_voidp);
412 xbt_dynar_t equals = xbt_dynar_new(sizeof(heap_equality_t), heap_equality_free_voidp);
414 void *heap1 = s1->regions[heap_index]->data, *heap2 = s2->regions[heap_index]->data;
416 if(mmalloc_compare_heap((xbt_mheap_t)s1->regions[heap_index]->data, (xbt_mheap_t)s2->regions[heap_index]->data, &stacks1, &stacks2, &equals)){
418 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
419 xbt_os_timer_stop(timer);
421 xbt_dynar_push_as(ct1->heap_comparison_times, double, xbt_os_timer_elapsed(timer));
423 xbt_dynar_push_as(ct2->heap_comparison_times, double, xbt_os_timer_elapsed(timer));
424 XBT_DEBUG("Different heap (mmalloc_compare)");
428 xbt_os_timer_free(timer);
429 xbt_dynar_free(&stacks1);
430 xbt_dynar_free(&stacks2);
431 xbt_dynar_free(&equals);
433 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
434 XBT_VERB("Different heap (mmalloc_compare)");
436 xbt_os_timer_stop(global_timer);
438 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
440 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
441 xbt_os_timer_free(global_timer);
448 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
449 xbt_os_timer_stop(timer);
452 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
453 xbt_os_timer_start(timer);
455 /* Stacks comparison */
457 stack_region_t stack_region1, stack_region2;
458 int diff = 0, diff_local = 0;
461 while(cursor < xbt_dynar_length(stacks1)){
462 stack_region1 = (stack_region_t)(xbt_dynar_get_as(stacks1, cursor, stack_region_t));
463 stack_region2 = (stack_region_t)(xbt_dynar_get_as(stacks2, cursor, stack_region_t));
464 sp1 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s1->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
465 sp2 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s2->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
466 diff = compare_stack(stack_region1, stack_region2, sp1, sp2, heap1, heap2, equals);
468 if(diff > 0){ /* Differences may be due to padding */
469 diff_local = compare_local_variables(((mc_snapshot_stack_t)xbt_dynar_get_as(s1->stacks, cursor, mc_snapshot_stack_t))->local_variables->data, ((mc_snapshot_stack_t)xbt_dynar_get_as(s2->stacks, cursor, mc_snapshot_stack_t))->local_variables->data, equals);
471 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
473 xbt_os_timer_stop(timer);
475 xbt_dynar_push_as(ct1->stacks_comparison_times, double, xbt_os_timer_elapsed(timer));
477 xbt_dynar_push_as(ct2->stacks_comparison_times, double, xbt_os_timer_elapsed(timer));
479 XBT_DEBUG("Different local variables between stacks %d", cursor + 1);
483 xbt_dynar_free(&stacks1);
484 xbt_dynar_free(&stacks2);
485 xbt_dynar_free(&equals);
487 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
488 XBT_VERB("Different local variables between stacks %d", cursor + 1);
490 xbt_os_timer_free(timer);
491 xbt_os_timer_stop(global_timer);
493 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
495 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
496 xbt_os_timer_free(global_timer);
508 xbt_dynar_free(&stacks1);
509 xbt_dynar_free(&stacks2);
510 xbt_dynar_free(&equals);
512 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
513 xbt_os_timer_free(timer);
515 if(!XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
516 xbt_os_timer_stop(global_timer);
518 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
520 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
522 xbt_os_timer_free(global_timer);
531 static int is_stack_ignore_variable(char *frame, char *var_name){
533 unsigned int cursor = 0;
535 int end = xbt_dynar_length(mc_stack_comparison_ignore) - 1;
536 mc_stack_ignore_variable_t current_var;
539 cursor = (start + end) / 2;
540 current_var = (mc_stack_ignore_variable_t)xbt_dynar_get_as(mc_stack_comparison_ignore, cursor, mc_stack_ignore_variable_t);
541 if(strcmp(current_var->frame, frame) == 0 || strcmp(current_var->frame, "*") == 0){
542 if(strcmp(current_var->var_name, var_name) == 0)
544 if(strcmp(current_var->var_name, var_name) < 0)
546 if(strcmp(current_var->var_name, var_name) > 0)
548 }else if(strcmp(current_var->frame, frame) < 0){
550 }else if(strcmp(current_var->frame, frame) > 0){
558 static int compare_local_variables(char *s1, char *s2, xbt_dynar_t heap_equals){
560 xbt_dynar_t tokens1 = xbt_str_split(s1, NULL);
561 xbt_dynar_t tokens2 = xbt_str_split(s2, NULL);
563 xbt_dynar_t s_tokens1, s_tokens2;
564 unsigned int cursor = 0;
566 char *ip1 = NULL, *ip2 = NULL;
568 while(cursor < xbt_dynar_length(tokens1)){
569 s_tokens1 = xbt_str_split(xbt_dynar_get_as(tokens1, cursor, char *), "=");
570 s_tokens2 = xbt_str_split(xbt_dynar_get_as(tokens2, cursor, char *), "=");
571 if(xbt_dynar_length(s_tokens1) > 1 && xbt_dynar_length(s_tokens2) > 1){
572 if((strcmp(xbt_dynar_get_as(s_tokens1, 0, char *), "ip") == 0) && (strcmp(xbt_dynar_get_as(s_tokens2, 0, char *), "ip") == 0)){
573 ip1 = strdup(xbt_dynar_get_as(s_tokens1, 1, char *));
574 ip2 = strdup(xbt_dynar_get_as(s_tokens2, 1, char *));
575 /*if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
576 XBT_VERB("Instruction pointer : %s, Instruction pointer : %s", ip1, ip2);*/
578 if(strcmp(xbt_dynar_get_as(s_tokens1, 1, char *), xbt_dynar_get_as(s_tokens2, 1, char *)) != 0){
579 /* Ignore this variable ? */
580 if(is_stack_ignore_variable(ip1, xbt_dynar_get_as(s_tokens1, 0, char *)) && is_stack_ignore_variable(ip2, xbt_dynar_get_as(s_tokens2, 0, char *))){
581 xbt_dynar_free(&s_tokens1);
582 xbt_dynar_free(&s_tokens2);
586 addr1 = (void *) strtoul(xbt_dynar_get_as(s_tokens1, 1, char *), NULL, 16);
587 addr2 = (void *) strtoul(xbt_dynar_get_as(s_tokens2, 1, char *), NULL, 16);
588 if(is_heap_equality(heap_equals, addr1, addr2) == 0){
589 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
590 XBT_VERB("Variable %s is different between stacks : %s - %s", xbt_dynar_get_as(s_tokens1, 0, char *), xbt_dynar_get_as(s_tokens1, 1, char *), xbt_dynar_get_as(s_tokens2, 1, char *));
591 xbt_dynar_free(&s_tokens1);
592 xbt_dynar_free(&s_tokens2);
597 xbt_dynar_free(&s_tokens1);
598 xbt_dynar_free(&s_tokens2);
602 xbt_dynar_free(&tokens1);
603 xbt_dynar_free(&tokens2);
608 static int is_heap_equality(xbt_dynar_t equals, void *a1, void *a2){
610 unsigned int cursor = 0;
612 int end = xbt_dynar_length(equals) - 1;
613 heap_equality_t current_equality;
616 cursor = (start + end) / 2;
617 current_equality = (heap_equality_t)xbt_dynar_get_as(equals, cursor, heap_equality_t);
618 if(current_equality->address1 == a1){
619 if(current_equality->address2 == a2)
621 if(current_equality->address2 < a2)
623 if(current_equality->address2 > a2)
626 if(current_equality->address1 < a1)
628 if(current_equality->address1 > a1)
637 static int compare_stack(stack_region_t s1, stack_region_t s2, void *sp1, void *sp2, void *heap1, void *heap2, xbt_dynar_t equals){
640 size_t size_used1 = s1->size - ((char*)sp1 - (char*)s1->address);
641 size_t size_used2 = s2->size - ((char*)sp2 - (char*)s2->address);
644 void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
646 while(k < size_used1){
647 if(memcmp((char *)s1->address + s1->size - k, (char *)s2->address + s2->size - k, 1) != 0){
648 pointer_align = ((size_used1 - k) / sizeof(void*)) * sizeof(void*);
649 addr_pointed1 = *((void **)(((char*)s1->address + (s1->size - size_used1)) + pointer_align));
650 addr_pointed2 = *((void **)(((char*)s2->address + (s2->size - size_used2)) + pointer_align));
651 if(is_heap_equality(equals, addr_pointed1, addr_pointed2) == 0){
652 if((addr_pointed1 > std_heap) && (addr_pointed1 < (void *)((char *)std_heap + STD_HEAP_SIZE)) && (addr_pointed2 > std_heap) && (addr_pointed2 < (void *)((char *)std_heap + STD_HEAP_SIZE))){
653 if(is_free_area(addr_pointed1, (xbt_mheap_t)heap1) == 0 || is_free_area(addr_pointed2, (xbt_mheap_t)heap2) == 0){
667 int MC_compare_snapshots(void *s1, void *s2){
669 return simcall_mc_compare_snapshots(s1, s2);