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 snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2, mc_comparison_times_t ct1, mc_comparison_times_t ct2){
179 int raw_mem = (mmalloc_get_current_heap() == raw_heap);
183 int errors = 0, i = 0;
185 if(s1->num_reg != s2->num_reg){
186 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose)){
187 XBT_VERB("Different num_reg (s1 = %u, s2 = %u)", s1->num_reg, s2->num_reg);
194 int heap_index = 0, data_libsimgrid_index = 0, data_program_index = 0;
196 /* Get index of regions */
197 while(i < s1->num_reg){
198 switch(s1->regions[i]->type){
204 data_libsimgrid_index = i;
206 while( i < s1->num_reg && s1->regions[i]->type == 1)
210 data_program_index = i;
212 while( i < s1->num_reg && s1->regions[i]->type == 2)
219 ct1->nb_comparisons++;
221 ct2->nb_comparisons++;
223 xbt_os_timer_t global_timer = xbt_os_timer_new();
224 xbt_os_timer_t timer = xbt_os_timer_new();
226 xbt_os_timer_start(global_timer);
228 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
229 xbt_os_timer_start(timer);
231 /* Compare number of blocks/fragments used in each heap */
232 size_t chunks_used1 = mmalloc_get_chunks_used((xbt_mheap_t)s1->regions[heap_index]->data);
233 size_t chunks_used2 = mmalloc_get_chunks_used((xbt_mheap_t)s2->regions[heap_index]->data);
234 if(chunks_used1 != chunks_used2){
235 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
236 xbt_os_timer_stop(timer);
238 xbt_dynar_push_as(ct1->chunks_used_comparison_times, double, xbt_os_timer_elapsed(timer));
240 xbt_dynar_push_as(ct2->chunks_used_comparison_times, double, xbt_os_timer_elapsed(timer));
241 XBT_DEBUG("Different number of chunks used in each heap : %zu - %zu", chunks_used1, chunks_used2);
244 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
245 XBT_VERB("Different number of chunks used in each heap : %zu - %zu", chunks_used1, chunks_used2);
247 xbt_os_timer_free(timer);
248 xbt_os_timer_stop(global_timer);
250 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
252 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
253 xbt_os_timer_free(global_timer);
261 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
262 xbt_os_timer_stop(timer);
265 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
266 xbt_os_timer_start(timer);
268 /* Compare size of stacks */
269 unsigned int cursor = 0;
270 void *addr_stack1, *addr_stack2;
272 size_t size_used1, size_used2;
274 while(cursor < xbt_dynar_length(stacks_areas)){
275 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);
276 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);
277 sp1 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s1->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
278 sp2 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s2->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
279 size_used1 = ((stack_region_t)xbt_dynar_get_as(stacks_areas, cursor, stack_region_t))->size - ((char*)sp1 - (char*)addr_stack1);
280 size_used2 = ((stack_region_t)xbt_dynar_get_as(stacks_areas, cursor, stack_region_t))->size - ((char*)sp2 - (char*)addr_stack2);
281 if(size_used1 != size_used2){
282 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
284 xbt_os_timer_stop(timer);
286 xbt_dynar_push_as(ct1->stacks_sizes_comparison_times, double, xbt_os_timer_elapsed(timer));
288 xbt_dynar_push_as(ct2->stacks_sizes_comparison_times, double, xbt_os_timer_elapsed(timer));
290 XBT_DEBUG("Different size used in stacks : %zu - %zu", size_used1, size_used2);
294 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
295 XBT_VERB("Different size used in stacks : %zu - %zu", size_used1, size_used2);
297 xbt_os_timer_free(timer);
298 xbt_os_timer_stop(global_timer);
300 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
302 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
303 xbt_os_timer_free(global_timer);
314 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
316 xbt_os_timer_stop(timer);
317 xbt_os_timer_start(timer);
320 /* Compare program data segment(s) */
322 i = data_program_index;
323 while(i < s1->num_reg && s1->regions[i]->type == 2){
324 if(data_bss_program_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
325 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
327 xbt_os_timer_stop(timer);
329 xbt_dynar_push_as(ct1->program_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
331 xbt_dynar_push_as(ct2->program_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
333 XBT_DEBUG("Different memcmp for data in program");
337 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
338 XBT_VERB("Different memcmp for data in program");
340 xbt_os_timer_free(timer);
341 xbt_os_timer_stop(global_timer);
343 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
345 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
346 xbt_os_timer_free(global_timer);
356 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
358 xbt_os_timer_stop(timer);
359 xbt_os_timer_start(timer);
362 /* Compare libsimgrid data segment(s) */
364 i = data_libsimgrid_index;
365 while(i < s1->num_reg && s1->regions[i]->type == 1){
366 if(data_bss_libsimgrid_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
367 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
369 xbt_os_timer_stop(timer);
371 xbt_dynar_push_as(ct1->libsimgrid_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
373 xbt_dynar_push_as(ct2->libsimgrid_data_segment_comparison_times, double, xbt_os_timer_elapsed(timer));
375 XBT_DEBUG("Different memcmp for data in libsimgrid");
379 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
380 XBT_VERB("Different memcmp for data in libsimgrid");
382 xbt_os_timer_free(timer);
383 xbt_os_timer_stop(global_timer);
385 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
387 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
388 xbt_os_timer_free(global_timer);
398 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
400 xbt_os_timer_stop(timer);
401 xbt_os_timer_start(timer);
405 xbt_dynar_t stacks1 = xbt_dynar_new(sizeof(stack_region_t), stack_region_free_voidp);
406 xbt_dynar_t stacks2 = xbt_dynar_new(sizeof(stack_region_t), stack_region_free_voidp);
407 xbt_dynar_t equals = xbt_dynar_new(sizeof(heap_equality_t), heap_equality_free_voidp);
409 void *heap1 = s1->regions[heap_index]->data, *heap2 = s2->regions[heap_index]->data;
411 if(mmalloc_compare_heap((xbt_mheap_t)s1->regions[heap_index]->data, (xbt_mheap_t)s2->regions[heap_index]->data, &stacks1, &stacks2, &equals)){
413 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
414 xbt_os_timer_stop(timer);
416 xbt_dynar_push_as(ct1->heap_comparison_times, double, xbt_os_timer_elapsed(timer));
418 xbt_dynar_push_as(ct2->heap_comparison_times, double, xbt_os_timer_elapsed(timer));
419 XBT_DEBUG("Different heap (mmalloc_compare)");
423 xbt_os_timer_free(timer);
424 xbt_dynar_free(&stacks1);
425 xbt_dynar_free(&stacks2);
426 xbt_dynar_free(&equals);
428 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
429 XBT_VERB("Different heap (mmalloc_compare)");
431 xbt_os_timer_stop(global_timer);
433 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
435 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
436 xbt_os_timer_free(global_timer);
443 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
444 xbt_os_timer_stop(timer);
447 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
448 xbt_os_timer_start(timer);
450 /* Stacks comparison */
452 stack_region_t stack_region1, stack_region2;
453 int diff = 0, diff_local = 0;
456 while(cursor < xbt_dynar_length(stacks1)){
457 stack_region1 = (stack_region_t)(xbt_dynar_get_as(stacks1, cursor, stack_region_t));
458 stack_region2 = (stack_region_t)(xbt_dynar_get_as(stacks2, cursor, stack_region_t));
459 sp1 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s1->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
460 sp2 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s2->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
461 diff = compare_stack(stack_region1, stack_region2, sp1, sp2, heap1, heap2, equals);
463 if(diff > 0){ /* Differences may be due to padding */
464 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);
466 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
468 xbt_os_timer_stop(timer);
470 xbt_dynar_push_as(ct1->stacks_comparison_times, double, xbt_os_timer_elapsed(timer));
472 xbt_dynar_push_as(ct2->stacks_comparison_times, double, xbt_os_timer_elapsed(timer));
474 XBT_DEBUG("Different local variables between stacks %d", cursor + 1);
478 xbt_dynar_free(&stacks1);
479 xbt_dynar_free(&stacks2);
480 xbt_dynar_free(&equals);
482 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
483 XBT_VERB("Different local variables between stacks %d", cursor + 1);
485 xbt_os_timer_free(timer);
486 xbt_os_timer_stop(global_timer);
488 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
490 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
491 xbt_os_timer_free(global_timer);
503 xbt_dynar_free(&stacks1);
504 xbt_dynar_free(&stacks2);
505 xbt_dynar_free(&equals);
507 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug))
508 xbt_os_timer_free(timer);
510 if(!XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_debug)){
511 xbt_os_timer_stop(global_timer);
513 xbt_dynar_push_as(ct1->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
515 xbt_dynar_push_as(ct2->snapshot_comparison_times, double, xbt_os_timer_elapsed(global_timer));
517 xbt_os_timer_free(global_timer);
526 static int is_stack_ignore_variable(char *frame, char *var_name){
528 unsigned int cursor = 0;
530 int end = xbt_dynar_length(mc_stack_comparison_ignore) - 1;
531 mc_stack_ignore_variable_t current_var;
534 cursor = (start + end) / 2;
535 current_var = (mc_stack_ignore_variable_t)xbt_dynar_get_as(mc_stack_comparison_ignore, cursor, mc_stack_ignore_variable_t);
536 if(strcmp(current_var->frame, frame) == 0 || strcmp(current_var->frame, "*") == 0){
537 if(strcmp(current_var->var_name, var_name) == 0)
539 if(strcmp(current_var->var_name, var_name) < 0)
541 if(strcmp(current_var->var_name, var_name) > 0)
543 }else if(strcmp(current_var->frame, frame) < 0){
545 }else if(strcmp(current_var->frame, frame) > 0){
553 static int compare_local_variables(char *s1, char *s2, xbt_dynar_t heap_equals){
555 xbt_dynar_t tokens1 = xbt_str_split(s1, NULL);
556 xbt_dynar_t tokens2 = xbt_str_split(s2, NULL);
558 xbt_dynar_t s_tokens1, s_tokens2;
559 unsigned int cursor = 0;
561 char *ip1 = NULL, *ip2 = NULL;
563 while(cursor < xbt_dynar_length(tokens1)){
564 s_tokens1 = xbt_str_split(xbt_dynar_get_as(tokens1, cursor, char *), "=");
565 s_tokens2 = xbt_str_split(xbt_dynar_get_as(tokens2, cursor, char *), "=");
566 if(xbt_dynar_length(s_tokens1) > 1 && xbt_dynar_length(s_tokens2) > 1){
567 if((strcmp(xbt_dynar_get_as(s_tokens1, 0, char *), "ip") == 0) && (strcmp(xbt_dynar_get_as(s_tokens2, 0, char *), "ip") == 0)){
568 ip1 = strdup(xbt_dynar_get_as(s_tokens1, 1, char *));
569 ip2 = strdup(xbt_dynar_get_as(s_tokens2, 1, char *));
570 /*if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
571 XBT_VERB("Instruction pointer : %s, Instruction pointer : %s", ip1, ip2);*/
573 if(strcmp(xbt_dynar_get_as(s_tokens1, 1, char *), xbt_dynar_get_as(s_tokens2, 1, char *)) != 0){
574 /* Ignore this variable ? */
575 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 *))){
576 xbt_dynar_free(&s_tokens1);
577 xbt_dynar_free(&s_tokens2);
581 addr1 = (void *) strtoul(xbt_dynar_get_as(s_tokens1, 1, char *), NULL, 16);
582 addr2 = (void *) strtoul(xbt_dynar_get_as(s_tokens2, 1, char *), NULL, 16);
583 if(is_heap_equality(heap_equals, addr1, addr2) == 0){
584 if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose))
585 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 *));
586 xbt_dynar_free(&s_tokens1);
587 xbt_dynar_free(&s_tokens2);
592 xbt_dynar_free(&s_tokens1);
593 xbt_dynar_free(&s_tokens2);
597 xbt_dynar_free(&tokens1);
598 xbt_dynar_free(&tokens2);
603 static int is_heap_equality(xbt_dynar_t equals, void *a1, void *a2){
605 unsigned int cursor = 0;
607 int end = xbt_dynar_length(equals) - 1;
608 heap_equality_t current_equality;
611 cursor = (start + end) / 2;
612 current_equality = (heap_equality_t)xbt_dynar_get_as(equals, cursor, heap_equality_t);
613 if(current_equality->address1 == a1){
614 if(current_equality->address2 == a2)
616 if(current_equality->address2 < a2)
618 if(current_equality->address2 > a2)
621 if(current_equality->address1 < a1)
623 if(current_equality->address1 > a1)
632 static int compare_stack(stack_region_t s1, stack_region_t s2, void *sp1, void *sp2, void *heap1, void *heap2, xbt_dynar_t equals){
635 size_t size_used1 = s1->size - ((char*)sp1 - (char*)s1->address);
636 size_t size_used2 = s2->size - ((char*)sp2 - (char*)s2->address);
639 void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
641 while(k < size_used1){
642 if(memcmp((char *)s1->address + s1->size - k, (char *)s2->address + s2->size - k, 1) != 0){
643 pointer_align = ((size_used1 - k) / sizeof(void*)) * sizeof(void*);
644 addr_pointed1 = *((void **)(((char*)s1->address + (s1->size - size_used1)) + pointer_align));
645 addr_pointed2 = *((void **)(((char*)s2->address + (s2->size - size_used2)) + pointer_align));
646 if(is_heap_equality(equals, addr_pointed1, addr_pointed2) == 0){
647 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))){
648 if(is_free_area(addr_pointed1, (xbt_mheap_t)heap1) == 0 || is_free_area(addr_pointed2, (xbt_mheap_t)heap2) == 0){
662 int MC_compare_snapshots(void *s1, void *s2){
664 return simcall_mc_compare_snapshots(s1, s2);