-/* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */
+/* Copyright (c) 2012-2013 Da 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. */
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_compare, mc,
"Logging specific to mc_compare");
-static int data_program_region_compare(void *d1, void *d2, size_t size);
-static int data_libsimgrid_region_compare(void *d1, void *d2, size_t size);
-static int heap_region_compare(void *d1, void *d2, size_t size);
+typedef struct s_pointers_pair{
+ void *p1;
+ void *p2;
+}s_pointers_pair_t, *pointers_pair_t;
+
+xbt_dynar_t compared_pointers;
-static int compare_stack(stack_region_t s1, stack_region_t s2, void *sp1, void *sp2, void *heap1, void *heap2, xbt_dynar_t equals);
-static int is_heap_equality(xbt_dynar_t equals, void *a1, void *a2);
-static size_t ignore(void *address);
+static int heap_region_compare(void *d1, void *d2, size_t size);
static void stack_region_free(stack_region_t s);
-static void heap_equality_free(heap_equality_t e);
-static int compare_local_variables(char *s1, char *s2, xbt_dynar_t heap_equals);
+static int compare_local_variables(mc_snapshot_stack_t stack1, mc_snapshot_stack_t stack2, void *heap1, void *heap2);
+static int compare_global_variables(int region_type, mc_mem_region_t r1, mc_mem_region_t r2);
+static int compare_pointer(char *pointer_type, void *addr_pointed1, void *addr_pointed2, int region_size, int region_type);
+static int compare_areas_with_type(void *area1, void *area2, xbt_dict_t types, xbt_dict_t other_types, char *type_id, int region_size, int region_type, void *start_data, int pointer_level);
+
+static int already_compared_pointers(void *p1, void *p2){
+
+ if(xbt_dynar_is_empty(compared_pointers))
+ return -1;
-static size_t ignore(void *address){
unsigned int cursor = 0;
int start = 0;
- int end = xbt_dynar_length(mc_comparison_ignore) - 1;
- mc_ignore_region_t region;
+ int end = xbt_dynar_length(compared_pointers) - 1;
+ pointers_pair_t pair;
while(start <= end){
cursor = (start + end) / 2;
- region = (mc_ignore_region_t)xbt_dynar_get_as(mc_comparison_ignore, cursor, mc_ignore_region_t);
- if(region->address == address)
- return region->size;
- if(region->address < address)
+ pair = (pointers_pair_t)xbt_dynar_get_as(compared_pointers, cursor, pointers_pair_t);
+ if(pair->p1 == p1){
+ if(pair->p2 == p2)
+ return 0;
+ else if(pair->p2 < p2)
+ start = cursor + 1;
+ else
+ end = cursor - 1;
+ }else if(pair->p1 < p1){
start = cursor + 1;
- if(region->address > address)
- end = cursor - 1;
+ }else{
+ end = cursor - 1 ;
+ }
}
- return 0;
+ return -1;
+
}
-static int data_program_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
- size_t i = 0;
- int pointer_align;
- void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
+static void add_compared_pointers(void *p1, void *p2){
+
+ pointers_pair_t new_pair = xbt_new0(s_pointers_pair_t, 1);
+ new_pair->p1 = p1;
+ new_pair->p2 = p2;
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- pointer_align = (i / sizeof(void*)) * sizeof(void*);
- addr_pointed1 = *((void **)((char *)d1 + pointer_align));
- addr_pointed2 = *((void **)((char *)d2 + pointer_align));
- if((addr_pointed1 > start_plt_binary && addr_pointed1 < end_plt_binary) || (addr_pointed2 > start_plt_binary && addr_pointed2 < end_plt_binary)){
- continue;
- }else{
- XBT_DEBUG("Different byte (offset=%zu) (%p - %p) in data program region", i, (char *)d1 + i, (char *)d2 + i);
- distance++;
- }
+ if(xbt_dynar_is_empty(compared_pointers)){
+ xbt_dynar_push(compared_pointers, &new_pair);
+ return;
+ }
+
+ unsigned int cursor = 0;
+ int start = 0;
+ int end = xbt_dynar_length(compared_pointers) - 1;
+ pointers_pair_t pair = NULL;
+
+ while(start <= end){
+ cursor = (start + end) / 2;
+ pair = (pointers_pair_t)xbt_dynar_get_as(compared_pointers, cursor, pointers_pair_t);
+ if(pair->p1 == p1){
+ if(pair->p2 == p2)
+ return;
+ else if(pair->p2 < p2)
+ start = cursor + 1;
+ else
+ end = cursor - 1;
+ }else if(pair->p1 < p1){
+ start = cursor + 1;
+ }else{
+ end = cursor - 1 ;
}
}
-
- XBT_INFO("Hamming distance between data program regions : %d", distance);
- return distance;
+ if(pair->p1 == p1){
+ if(pair->p2 < p2)
+ xbt_dynar_insert_at(compared_pointers, cursor + 1, &new_pair);
+ else
+ xbt_dynar_insert_at(compared_pointers, cursor, &new_pair);
+ }else{
+ if(pair->p1 < p1)
+ xbt_dynar_insert_at(compared_pointers, cursor + 1, &new_pair);
+ else
+ xbt_dynar_insert_at(compared_pointers, cursor, &new_pair);
+ }
+
}
-static int data_libsimgrid_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
- size_t i = 0, ignore_size = 0;
- int pointer_align;
- void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
+static int compare_areas_with_type(void *area1, void *area2, xbt_dict_t types, xbt_dict_t other_types, char *type_id, int region_size, int region_type, void *start_data, int pointer_level){
- for(i=0; i<size; i++){
- if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- if((ignore_size = ignore((char *)start_data_libsimgrid+i)) > 0){
- i = i + ignore_size;
- continue;
+ dw_type_t type = xbt_dict_get_or_null(types, type_id);;
+ unsigned int cursor = 0;
+ dw_type_t member, subtype, subsubtype;
+ int elm_size, i, res, switch_types = 0;
+ void *addr_pointed1, *addr_pointed2;
+ int pointed_area_size1, pointed_area_size2;
+
+ switch(type->type){
+ case e_dw_base_type:
+ case e_dw_enumeration_type:
+ case e_dw_union_type:
+ return (memcmp(area1, area2, type->size) != 0);
+ break;
+ case e_dw_typedef:
+ case e_dw_volatile_type:
+ return compare_areas_with_type(area1, area2, types, other_types, type->dw_type_id, region_size, region_type, start_data, pointer_level);
+ break;
+ case e_dw_const_type: /* Const variable cannot be modified */
+ return -1;
+ break;
+ case e_dw_array_type:
+ subtype = xbt_dict_get_or_null(types, type->dw_type_id);
+ switch(subtype->type){
+ case e_dw_base_type:
+ case e_dw_enumeration_type:
+ case e_dw_pointer_type:
+ case e_dw_structure_type:
+ case e_dw_union_type:
+ if(subtype->size == 0){ /*declaration of the type, need the complete description */
+ subtype = xbt_dict_get_or_null(types, get_type_description(types, subtype->name));
+ if(subtype == NULL){
+ subtype = xbt_dict_get_or_null(other_types, get_type_description(other_types, subtype->name));
+ switch_types = 1;
+ }
+ }
+ elm_size = subtype->size;
+ break;
+ case e_dw_typedef:
+ case e_dw_volatile_type:
+ subsubtype = xbt_dict_get_or_null(types, subtype->dw_type_id);
+ if(subsubtype->size == 0){ /*declaration of the type, need the complete description */
+ subsubtype = xbt_dict_get_or_null(types, get_type_description(types, subsubtype->name));
+ if(subsubtype == NULL){
+ subsubtype = xbt_dict_get_or_null(other_types, get_type_description(other_types, subsubtype->name));
+ switch_types = 1;
+ }
}
- pointer_align = (i / sizeof(void*)) * sizeof(void*);
- addr_pointed1 = *((void **)((char *)d1 + pointer_align));
- addr_pointed2 = *((void **)((char *)d2 + pointer_align));
- if((addr_pointed1 > start_plt_libsimgrid && addr_pointed1 < end_plt_libsimgrid) || (addr_pointed2 > start_plt_libsimgrid && addr_pointed2 < end_plt_libsimgrid)){
- continue;
- }else if(addr_pointed1 >= raw_heap && addr_pointed1 <= end_raw_heap && addr_pointed2 >= raw_heap && addr_pointed2 <= end_raw_heap){
- continue;
+ elm_size = subsubtype->size;
+ break;
+ default :
+ return 0;
+ break;
+ }
+ for(i=0; i<type->size; i++){
+ if(switch_types)
+ res = compare_areas_with_type((char *)area1 + (i*elm_size), (char *)area2 + (i*elm_size), other_types, types, type->dw_type_id, region_size, region_type, start_data, pointer_level);
+ else
+ res = compare_areas_with_type((char *)area1 + (i*elm_size), (char *)area2 + (i*elm_size), types, other_types, type->dw_type_id, region_size, region_type, start_data, pointer_level);
+ if(res != 0)
+ return res;
+ }
+ break;
+ case e_dw_pointer_type:
+ if(type->dw_type_id && ((dw_type_t)xbt_dict_get_or_null(types, type->dw_type_id))->type == e_dw_subroutine_type){
+ addr_pointed1 = *((void **)(area1));
+ addr_pointed2 = *((void **)(area2));
+ return (addr_pointed1 != addr_pointed2);
+ }else{
+ addr_pointed1 = *((void **)(area1));
+ addr_pointed2 = *((void **)(area2));
+
+ if((addr_pointed1 == addr_pointed2) && ((pointed_area_size1 = get_pointed_area_size(addr_pointed1, 1)) != (pointed_area_size2 = get_pointed_area_size(addr_pointed2, 2))))
+ return -1;
+ if(addr_pointed1 == NULL && addr_pointed2 == NULL)
+ return 0;
+ if(already_compared_pointers(addr_pointed1, addr_pointed2) != -1)
+ return 0;
+ add_compared_pointers(addr_pointed1, addr_pointed2);
+
+ pointer_level++;
+
+ if(addr_pointed1 > std_heap && (char *)addr_pointed1 < (char*) std_heap + STD_HEAP_SIZE && addr_pointed2 > std_heap && (char *)addr_pointed2 < (char*) std_heap + STD_HEAP_SIZE){
+ return compare_heap_area(addr_pointed1, addr_pointed2, NULL, types, other_types, type->dw_type_id, pointer_level);
+ }else if(addr_pointed1 > start_data && (char*)addr_pointed1 <= (char *)start_data + region_size && addr_pointed2 > start_data && (char*)addr_pointed2 <= (char *)start_data + region_size){
+ if(type->dw_type_id == NULL)
+ return (addr_pointed1 != addr_pointed2);
+ else
+ return compare_areas_with_type(addr_pointed1, addr_pointed2, types, other_types, type->dw_type_id, region_size, region_type, start_data, pointer_level);
}else{
- XBT_DEBUG("Different byte (offset=%zu) (%p - %p) in data libsimgrid region", i, (char *)d1 + i, (char *)d2 + i);
- XBT_DEBUG("Addresses pointed : %p - %p\n", addr_pointed1, addr_pointed2);
- distance++;
+ return (addr_pointed1 != addr_pointed2);
}
}
+ break;
+ case e_dw_structure_type:
+ xbt_dynar_foreach(type->members, cursor, member){
+ res = compare_areas_with_type((char *)area1 + member->offset, (char *)area2 + member->offset, types, other_types, member->dw_type_id, region_size, region_type, start_data, pointer_level);
+ if(res == 1)
+ return res;
+ }
+ break;
+ case e_dw_subroutine_type:
+ return -1;
+ break;
+ default:
+ XBT_VERB("Unknown case : %d", type->type);
+ break;
}
- XBT_INFO("Hamming distance between data libsimgrid regions : %d", distance); fflush(NULL);
-
- return distance;
+ return 0;
+}
+
+static int compare_global_variables(int region_type, mc_mem_region_t r1, mc_mem_region_t r2){
+
+ if(!compared_pointers){
+ compared_pointers = xbt_dynar_new(sizeof(pointers_pair_t), NULL);
+ MC_ignore_global_variable("compared_pointers");
+ }else{
+ xbt_dynar_reset(compared_pointers);
+ }
+
+ xbt_dynar_t variables;
+ xbt_dict_t types, other_types;
+ int res;
+ unsigned int cursor = 0;
+ dw_variable_t current_var;
+ size_t offset;
+ void *start_data;
+
+ if(region_type == 2){
+ variables = mc_global_variables_binary;
+ types = mc_variables_type_binary;
+ other_types = mc_variables_type_libsimgrid;
+ start_data = start_data_binary;
+ }else{
+ variables = mc_global_variables_libsimgrid;
+ types = mc_variables_type_libsimgrid;
+ other_types = mc_variables_type_binary;
+ start_data = start_data_libsimgrid;
+ }
+
+ xbt_dynar_foreach(variables, cursor, current_var){
+
+ if(region_type == 2)
+ offset = (char *)current_var->address.address - (char *)start_data_binary;
+ else
+ offset = (char *)current_var->address.address - (char *)start_data_libsimgrid;
+
+ res = compare_areas_with_type((char *)r1->data + offset, (char *)r2->data + offset, types, other_types, current_var->type_origin, r1->size, region_type, start_data, 0);
+ if(res == -1){
+ xbt_dynar_cursor_rm(variables, &cursor);
+ }else if(res == 1){
+ XBT_VERB("Global variable %s is different between snapshots", current_var->name);
+ return 1;
+ }
+
+ }
+ return 0;
+
+}
+
+static int compare_local_variables(mc_snapshot_stack_t stack1, mc_snapshot_stack_t stack2, void *heap1, void *heap2){
+
+ if(!compared_pointers){
+ compared_pointers = xbt_dynar_new(sizeof(pointers_pair_t), NULL);
+ MC_ignore_global_variable("compared_pointers");
+ }else{
+ xbt_dynar_reset(compared_pointers);
+ }
+
+ if(xbt_dynar_length(stack1->local_variables) != xbt_dynar_length(stack2->local_variables)){
+ XBT_VERB("Different number of local variables");
+ return 1;
+ }else{
+ unsigned int cursor = 0;
+ local_variable_t current_var1, current_var2;
+ int offset1, offset2, res;
+ while(cursor < xbt_dynar_length(stack1->local_variables)){
+ current_var1 = (local_variable_t)xbt_dynar_get_as(stack1->local_variables, cursor, local_variable_t);
+ current_var2 = (local_variable_t)xbt_dynar_get_as(stack2->local_variables, cursor, local_variable_t);
+ if(strcmp(current_var1->name, current_var2->name) != 0 || strcmp(current_var1->frame, current_var2->frame) != 0 || current_var1->ip != current_var2->ip)
+ return 1;
+ offset1 = (char *)current_var1->address - (char *)std_heap;
+ offset2 = (char *)current_var2->address - (char *)std_heap;
+ if(current_var1->region == 1)
+ res = compare_areas_with_type( (char *)heap1 + offset1, (char *)heap2 + offset2, mc_variables_type_libsimgrid, mc_variables_type_binary, current_var1->type, 0, 1, start_data_libsimgrid, 0l);
+ else
+ res = compare_areas_with_type( (char *)heap1 + offset1, (char *)heap2 + offset2, mc_variables_type_binary, mc_variables_type_libsimgrid, current_var1->type, 0, 2, start_data_binary, 0l);
+ if(res == 1){
+ XBT_VERB("Local variable %s (%p - %p) in frame %s is different between snapshots", current_var1->name, (char *)heap1 + offset1, (char *)heap2 + offset2, current_var1->frame);
+ return res;
+ }
+ cursor++;
+ }
+ return 0;
+ }
}
+
static int heap_region_compare(void *d1, void *d2, size_t size){
- int distance = 0;
size_t i = 0;
for(i=0; i<size; i++){
if(memcmp(((char *)d1) + i, ((char *)d2) + i, 1) != 0){
- XBT_DEBUG("Different byte (offset=%zu) (%p - %p) in heap region", i, (char *)d1 + i, (char *)d2 + i);
- distance++;
+ if(XBT_LOG_ISENABLED(mc_compare, xbt_log_priority_verbose)){
+ XBT_VERB("Different byte (offset=%zu) (%p - %p) in heap region", i, (char *)d1 + i, (char *)d2 + i);
+ }
+ return 1;
}
}
- XBT_INFO("Hamming distance between heap regions : %d (total size : %zu)", distance, size);
-
- return distance;
+ return 0;
}
static void stack_region_free(stack_region_t s){
stack_region_free((stack_region_t) * (void **) s);
}
-static void heap_equality_free(heap_equality_t e){
- if(e){
- xbt_free(e);
- }
-}
-
-void heap_equality_free_voidp(void *e){
- heap_equality_free((heap_equality_t) * (void **) e);
+int SIMIX_pre_mc_compare_snapshots(smx_simcall_t simcall,
+ mc_snapshot_t s1, mc_snapshot_t s2){
+ return snapshot_compare(s1, s2);
}
int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2){
- raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ int raw_mem = (mmalloc_get_current_heap() == raw_heap);
MC_SET_RAW_MEM;
-
- int errors = 0, i;
- xbt_dynar_t stacks1 = xbt_dynar_new(sizeof(stack_region_t), stack_region_free_voidp);
- xbt_dynar_t stacks2 = xbt_dynar_new(sizeof(stack_region_t), stack_region_free_voidp);
- xbt_dynar_t equals = xbt_dynar_new(sizeof(heap_equality_t), heap_equality_free_voidp);
-
- void *heap1 = NULL, *heap2 = NULL;
-
- if(s1->num_reg != s2->num_reg){
- XBT_DEBUG("Different num_reg (s1 = %u, s2 = %u)", s1->num_reg, s2->num_reg);
- return 1;
- }
-
- for(i=0 ; i< s1->num_reg ; i++){
-
- if(s1->regions[i]->type != s2->regions[i]->type){
- XBT_DEBUG("Different type of region");
+
+ int errors = 0;
+
+ xbt_os_timer_t global_timer = xbt_os_timer_new();
+ xbt_os_timer_t timer = xbt_os_timer_new();
+
+ xbt_os_walltimer_start(global_timer);
+
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_start(timer);
+ #endif
+
+ /* Compare size of stacks */
+ int i = 0;
+ size_t size_used1, size_used2;
+ int is_diff = 0;
+ while(i < xbt_dynar_length(s1->stacks)){
+ size_used1 = s1->stack_sizes[i];
+ size_used2 = s2->stack_sizes[i];
+ if(size_used1 != size_used2){
+ #ifdef MC_DEBUG
+ if(is_diff == 0){
+ xbt_os_walltimer_stop(timer);
+ mc_comp_times->stacks_sizes_comparison_time = xbt_os_timer_elapsed(timer);
+ }
+ XBT_DEBUG("Different size used in stacks : %zu - %zu", size_used1, size_used2);
errors++;
+ is_diff = 1;
+ #else
+ #ifdef MC_VERBOSE
+ XBT_VERB("Different size used in stacks : %zu - %zu", size_used1, size_used2);
+ #endif
+
+ xbt_os_timer_free(timer);
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ xbt_os_timer_free(global_timer);
+
+ if(!raw_mem)
+ MC_UNSET_RAW_MEM;
+
+ return 1;
+ #endif
}
+ i++;
+ }
+
+ #ifdef MC_DEBUG
+ if(is_diff == 0)
+ xbt_os_walltimer_stop(timer);
+ xbt_os_walltimer_start(timer);
+ #endif
+
+ /* Compare hash of global variables */
+ if(s1->hash_global != NULL && s2->hash_global != NULL){
+ if(strcmp(s1->hash_global, s2->hash_global) != 0){
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_stop(timer);
+ mc_comp_times->hash_global_variables_comparison_time = xbt_os_timer_elapsed(timer);
+ XBT_DEBUG("Different hash of global variables : %s - %s", s1->hash_global, s2->hash_global);
+ errors++;
+ #else
+ #ifdef MC_VERBOSE
+ XBT_VERB("Different hash of global variables : %s - %s", s1->hash_global, s2->hash_global);
+ #endif
+
+ xbt_os_timer_free(timer);
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ xbt_os_timer_free(global_timer);
- switch(s1->regions[i]->type){
- case 0 :
- /* Compare heapregion */
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_DEBUG("Different size of heap (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size);
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 1;
- }
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){
- XBT_DEBUG("Different start addr of heap (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 1;
- }
- if(mmalloc_compare_heap((xbt_mheap_t)s1->regions[i]->data, (xbt_mheap_t)s2->regions[i]->data, &stacks1, &stacks2, &equals)){
- XBT_INFO("Different heap (mmalloc_compare)");
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 1;
- }
- heap1 = s1->regions[i]->data;
- heap2 = s2->regions[i]->data;
- break;
- case 1 :
- /* Compare data libsimgrid region */
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_DEBUG("Different size of libsimgrid (data) (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size);
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
+ if(!raw_mem)
MC_UNSET_RAW_MEM;
- return 1;
- }
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){
- XBT_DEBUG("Different start addr of libsimgrid (data) (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 1;
- }
- if(data_libsimgrid_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
- XBT_INFO("Different memcmp for data in libsimgrid");
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 1;
- }
- break;
- case 2 :
- /* Compare data program region */
- if(s1->regions[i]->size != s2->regions[i]->size){
- XBT_DEBUG("Different size of data program (s1 = %zu, s2 = %zu)", s1->regions[i]->size, s2->regions[i]->size);
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
return 1;
- }
- if(s1->regions[i]->start_addr != s2->regions[i]->start_addr){
- XBT_DEBUG("Different start addr of data program (s1 = %p, s2 = %p)", s1->regions[i]->start_addr, s2->regions[i]->start_addr);
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 1;
- }
- if(data_program_region_compare(s1->regions[i]->data, s2->regions[i]->data, s1->regions[i]->size) != 0){
- XBT_INFO("Different memcmp for data in program");
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 1;
- }
- break;
-
+ #endif
}
-
}
- /* Stacks comparison */
- unsigned int cursor = 0;
- stack_region_t stack_region1, stack_region2;
- void *sp1, *sp2;
- int diff = 0, diff_local = 0;
-
- while(cursor < xbt_dynar_length(stacks1)){
- XBT_DEBUG("Stack %d", cursor + 1);
- stack_region1 = (stack_region_t)(xbt_dynar_get_as(stacks1, cursor, stack_region_t));
- stack_region2 = (stack_region_t)(xbt_dynar_get_as(stacks2, cursor, stack_region_t));
- sp1 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s1->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
- sp2 = ((mc_snapshot_stack_t)xbt_dynar_get_as(s2->stacks, cursor, mc_snapshot_stack_t))->stack_pointer;
- diff = compare_stack(stack_region1, stack_region2, sp1, sp2, heap1, heap2, equals);
-
- if(diff >0){
- 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);
- if(diff_local > 0){
- XBT_INFO("Different local variables between stacks");
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_start(timer);
+ #endif
+
+ /* Compare hash of local variables */
+ if(s1->hash_local != NULL && s2->hash_local != NULL){
+ if(strcmp(s1->hash_local, s2->hash_local) != 0){
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_stop(timer);
+ mc_comp_times->hash_local_variables_comparison_time = xbt_os_timer_elapsed(timer);
+ XBT_DEBUG("Different hash of local variables : %s - %s", s1->hash_local, s2->hash_local);
+ errors++;
+ #else
+ #ifdef MC_VERBOSE
+ XBT_VERB("Different hash of local variables : %s - %s", s1->hash_local, s2->hash_local);
+ #endif
+
+ xbt_os_timer_free(timer);
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ xbt_os_timer_free(global_timer);
+
+ if(!raw_mem)
MC_UNSET_RAW_MEM;
+
return 1;
- }else{
- XBT_INFO("Local variables are equals in stack %d", cursor + 1);
- }
- }else{
- XBT_INFO("Hamming distance between stacks : %d", diff);
+ #endif
}
- cursor++;
}
- xbt_dynar_free(&stacks1);
- xbt_dynar_free(&stacks2);
- xbt_dynar_free(&equals);
- if(!raw_mem_set)
- MC_UNSET_RAW_MEM;
- return 0;
-
-}
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_start(timer);
+ #endif
-static int compare_local_variables(char *s1, char *s2, xbt_dynar_t heap_equals){
-
- xbt_dynar_t tokens1 = xbt_str_split(s1, NULL);
- xbt_dynar_t tokens2 = xbt_str_split(s2, NULL);
-
- xbt_dynar_t s_tokens1, s_tokens2;
- unsigned int cursor = 0;
- void *addr1, *addr2;
+ /* Init heap information used in heap comparison algorithm */
+ init_heap_information((xbt_mheap_t)s1->regions[0]->data, (xbt_mheap_t)s2->regions[0]->data, s1->to_ignore, s2->to_ignore);
- int diff = 0;
-
- while(cursor < xbt_dynar_length(tokens1)){
- s_tokens1 = xbt_str_split(xbt_dynar_get_as(tokens1, cursor, char *), "=");
- s_tokens2 = xbt_str_split(xbt_dynar_get_as(tokens2, cursor, char *), "=");
- if(xbt_dynar_length(s_tokens1) > 1 && xbt_dynar_length(s_tokens2) > 1){
- if(strcmp(xbt_dynar_get_as(s_tokens1, 1, char *), xbt_dynar_get_as(s_tokens2, 1, char *)) != 0){
- addr1 = (void *) strtoul(xbt_dynar_get_as(s_tokens1, 1, char *), NULL, 16);
- addr2 = (void *) strtoul(xbt_dynar_get_as(s_tokens2, 1, char *), NULL, 16);
- if(is_heap_equality(heap_equals, addr1, addr2) == 0){
- XBT_INFO("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 *));
- diff++;
+ /* Stacks comparison */
+ unsigned int cursor = 0;
+ int diff_local = 0;
+ is_diff = 0;
+ mc_snapshot_stack_t stack1, stack2;
+
+ while(cursor < xbt_dynar_length(s1->stacks)){
+ stack1 = (mc_snapshot_stack_t)xbt_dynar_get_as(s1->stacks, cursor, mc_snapshot_stack_t);
+ stack2 = (mc_snapshot_stack_t)xbt_dynar_get_as(s2->stacks, cursor, mc_snapshot_stack_t);
+ diff_local = compare_local_variables(stack1, stack2, s1->regions[0]->data, s2->regions[0]->data);
+ if(diff_local > 0){
+ #ifdef MC_DEBUG
+ if(is_diff == 0){
+ xbt_os_walltimer_stop(timer);
+ mc_comp_times->stacks_comparison_time = xbt_os_timer_elapsed(timer);
}
- }
+ XBT_DEBUG("Different local variables between stacks %d", cursor + 1);
+ errors++;
+ is_diff = 1;
+ #else
+
+ #ifdef MC_VERBOSE
+ XBT_VERB("Different local variables between stacks %d", cursor + 1);
+ #endif
+
+ reset_heap_information();
+ xbt_os_timer_free(timer);
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ xbt_os_timer_free(global_timer);
+
+ if(!raw_mem)
+ MC_UNSET_RAW_MEM;
+
+ return 1;
+ #endif
}
- xbt_dynar_free(&s_tokens1);
- xbt_dynar_free(&s_tokens2);
cursor++;
}
- xbt_dynar_free(&tokens1);
- xbt_dynar_free(&tokens2);
- return diff;
-
-}
+ #ifdef MC_DEBUG
+ if(is_diff == 0)
+ xbt_os_walltimer_stop(timer);
+ xbt_os_walltimer_start(timer);
+ #endif
+
+ /* Compare binary global variables */
+ is_diff = compare_global_variables(2, s1->regions[2], s2->regions[2]);
+ if(is_diff != 0){
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_stop(timer);
+ mc_comp_times->binary_global_variables_comparison_time = xbt_os_timer_elapsed(timer);
+ XBT_DEBUG("Different global variables in binary");
+ errors++;
+ #else
+ #ifdef MC_VERBOSE
+ XBT_VERB("Different global variables in binary");
+ #endif
+
+ reset_heap_information();
+ xbt_os_timer_free(timer);
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ xbt_os_timer_free(global_timer);
+
+ if(!raw_mem)
+ MC_UNSET_RAW_MEM;
-static int is_heap_equality(xbt_dynar_t equals, void *a1, void *a2){
+ return 1;
+ #endif
+ }
- unsigned int cursor = 0;
- int start = 0;
- int end = xbt_dynar_length(equals) - 1;
- heap_equality_t current_equality;
+ #ifdef MC_DEBUG
+ if(is_diff == 0)
+ xbt_os_walltimer_stop(timer);
+ xbt_os_walltimer_start(timer);
+ #endif
+
+ /* Compare libsimgrid global variables */
+ is_diff = compare_global_variables(1, s1->regions[1], s2->regions[1]);
+ if(is_diff != 0){
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_stop(timer);
+ mc_comp_times->libsimgrid_global_variables_comparison_time = xbt_os_timer_elapsed(timer);
+ XBT_DEBUG("Different global variables in libsimgrid");
+ errors++;
+ #else
+ #ifdef MC_VERBOSE
+ XBT_VERB("Different global variables in libsimgrid");
+ #endif
+
+ reset_heap_information();
+ xbt_os_timer_free(timer);
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ xbt_os_timer_free(global_timer);
+
+ if(!raw_mem)
+ MC_UNSET_RAW_MEM;
- while(start <= end){
- cursor = (start + end) / 2;
- current_equality = (heap_equality_t)xbt_dynar_get_as(equals, cursor, heap_equality_t);
- if(current_equality->address1 == a1){
- if(current_equality->address2 == a2)
- return 1;
- if(current_equality->address2 < a2)
- start = cursor + 1;
- if(current_equality->address2 > a2)
- end = cursor - 1;
- }
- if(current_equality->address1 < a1)
- start = cursor + 1;
- if(current_equality->address1 > a1)
- end = cursor - 1;
+ return 1;
+ #endif
}
+
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_start(timer);
+ #endif
- return 0;
+ /* Compare heap */
+ if(mmalloc_compare_heap((xbt_mheap_t)s1->regions[0]->data, (xbt_mheap_t)s2->regions[0]->data) > 0){
-}
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_stop(timer);
+ mc_comp_times->heap_comparison_time = xbt_os_timer_elapsed(timer);
+ XBT_DEBUG("Different heap (mmalloc_compare)");
+ errors++;
+ #else
+ xbt_os_timer_free(timer);
+
+ #ifdef MC_VERBOSE
+ XBT_VERB("Different heap (mmalloc_compare)");
+ #endif
+
+ reset_heap_information();
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ xbt_os_timer_free(global_timer);
+
+ if(!raw_mem)
+ MC_UNSET_RAW_MEM;
+
+ return 1;
+ #endif
+ }else{
+ #ifdef MC_DEBUG
+ xbt_os_walltimer_stop(timer);
+ #endif
+ }
-static int compare_stack(stack_region_t s1, stack_region_t s2, void *sp1, void *sp2, void *heap1, void *heap2, xbt_dynar_t equals){
-
- size_t k = 0, nb_diff = 0;
- size_t size_used1 = s1->size - ((char*)sp1 - (char*)s1->address);
- size_t size_used2 = s2->size - ((char*)sp2 - (char*)s2->address);
+ reset_heap_information();
+
+ xbt_os_timer_free(timer);
- int pointer_align;
- void *addr_pointed1 = NULL, *addr_pointed2 = NULL;
+ #ifdef MC_VERBOSE
+ xbt_os_walltimer_stop(global_timer);
+ mc_snapshot_comparison_time = xbt_os_timer_elapsed(global_timer);
+ #endif
- if(size_used1 == size_used2){
-
- while(k < size_used1){
- if(memcmp((char *)s1->address + s1->size - k, (char *)s2->address + s2->size - k, 1) != 0){
- pointer_align = ((size_used1 - k) / sizeof(void*)) * sizeof(void*);
- addr_pointed1 = *((void **)(((char*)s1->address + (s1->size - size_used1)) + pointer_align));
- addr_pointed2 = *((void **)(((char*)s2->address + (s2->size - size_used2)) + pointer_align));
- if(is_heap_equality(equals, addr_pointed1, addr_pointed2) == 0){
- 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))){
- if(is_free_area(addr_pointed1, (xbt_mheap_t)heap1) == 0 || is_free_area(addr_pointed2, (xbt_mheap_t)heap2) == 0){
- //XBT_INFO("Difference at offset %zu (%p - %p)", k, (char *)s1->address + s1->size - k, (char *)s2->address + s2->size - k);
- nb_diff++;
- }
- }else{
- //XBT_INFO("Difference at offset %zu (%p - %p)", k, (char *)s1->address + s1->size - k, (char *)s2->address + s2->size - k);
- nb_diff++;
- }
- }
- }
- k++;
- }
+ xbt_os_timer_free(global_timer);
- }else{
- XBT_INFO("Different size used between stacks");
- return 1;
- }
+ #ifdef MC_DEBUG
+ print_comparison_times();
+ #endif
- return nb_diff;
+ if(!raw_mem)
+ MC_UNSET_RAW_MEM;
+
+ return errors > 0;
+
}
int MC_compare_snapshots(void *s1, void *s2){
-
+
+ MC_ignore_local_variable("self", "simcall_BODY_mc_snapshot");
+
return simcall_mc_compare_snapshots(s1, s2);
}
+
+void print_comparison_times(){
+ XBT_DEBUG("*** Comparison times ***");
+ XBT_DEBUG("- Nb processes : %f", mc_comp_times->nb_processes_comparison_time);
+ XBT_DEBUG("- Nb bytes used : %f", mc_comp_times->bytes_used_comparison_time);
+ XBT_DEBUG("- Stacks sizes : %f", mc_comp_times->stacks_sizes_comparison_time);
+ XBT_DEBUG("- Binary global variables : %f", mc_comp_times->binary_global_variables_comparison_time);
+ XBT_DEBUG("- Libsimgrid global variables : %f", mc_comp_times->libsimgrid_global_variables_comparison_time);
+ XBT_DEBUG("- Heap : %f", mc_comp_times->heap_comparison_time);
+ XBT_DEBUG("- Stacks : %f", mc_comp_times->stacks_comparison_time);
+}
