* under the terms of the license (GNU LGPL) which comes with this package. */
#include "xbt/ex_interface.h" /* internals of backtrace setup */
+#include "xbt/str.h"
+#include "mc/mc.h"
-extern char *xbt_binary_name;
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mm_diff, xbt,
+ "Logging specific to mm_diff in mmalloc");
-void mmalloc_backtrace_display(xbt_mheap_t mdp, void *ptr){
- size_t block = BLOCK(ptr);
- int type;
- xbt_ex_t e;
+extern char *xbt_binary_name;
- if ((char *) ptr < (char *) mdp->heapbase || block > mdp->heapsize) {
- fprintf(stderr,"Ouch, this pointer is not mine. I cannot display its backtrace. I refuse it to death!!\n");
- abort();
- }
+void mmalloc_backtrace_block_display(void* heapinfo, size_t block){
- type = mdp->heapinfo[block].type;
+ xbt_ex_t e;
- if (type != 0) {
- //fprintf(stderr,"Only full blocks are backtraced for now. Ignoring your request.\n");
- return;
- }
- if (mdp->heapinfo[block].busy_block.bt_size == 0) {
+ if (((malloc_info *)heapinfo)[block].busy_block.bt_size == 0) {
fprintf(stderr,"No backtrace available for that block, sorry.\n");
return;
}
- memcpy(&e.bt,&(mdp->heapinfo[block].busy_block.bt),sizeof(void*)*XBT_BACKTRACE_SIZE);
- e.used = mdp->heapinfo[block].busy_block.bt_size;
+ memcpy(&e.bt,&(((malloc_info *)heapinfo)[block].busy_block.bt),sizeof(void*)*XBT_BACKTRACE_SIZE);
+e.used = ((malloc_info *)heapinfo)[block].busy_block.bt_size;
xbt_ex_setup_backtrace(&e);
if (e.used == 0) {
} else {
int i;
- fprintf(stderr, "Backtrace of where the block %p where malloced (%d frames):\n",ptr,e.used);
+ fprintf(stderr, "Backtrace of where the block %zu was malloced (%d frames):\n", block ,e.used);
for (i = 0; i < e.used; i++) /* no need to display "xbt_backtrace_display" */{
fprintf(stderr,"%d",i);fflush(NULL);
fprintf(stderr, "---> %s\n", e.bt_strings[i] + 4);
}
}
-int mmalloc_compare_heap(xbt_mheap_t mdp1, xbt_mheap_t mdp2, void *std_heap_addr){
-
- if(mdp1 == NULL && mdp2 == NULL){
- XBT_DEBUG("Malloc descriptors null");
- return 0;
- }
-
- /* Heapstats */
-
- int errors = mmalloc_compare_mdesc(mdp1, mdp2, std_heap_addr);
+void mmalloc_backtrace_fragment_display(void* heapinfo, size_t block, size_t frag){
- return (errors > 0);
-
-}
-
-int mmalloc_compare_mdesc(struct mdesc *mdp1, struct mdesc *mdp2, void *std_heap_addr){
-
- int errors = 0;
+ xbt_ex_t e;
- if(mdp1->headersize != mdp2->headersize){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different size of the file header for the mapped files");
- errors++;
- }else{
- return 1;
- }
- }
+ memcpy(&e.bt,&(((malloc_info *)heapinfo)[block].busy_frag.bt[frag]),sizeof(void*)*XBT_BACKTRACE_SIZE);
+ e.used = XBT_BACKTRACE_SIZE;
- if(mdp1->refcount != mdp2->refcount){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different number of processes that attached the heap");
- errors++;
- }else{
- return 1;
- }
- }
+ xbt_ex_setup_backtrace(&e);
+ if (e.used == 0) {
+ fprintf(stderr, "(backtrace not set)\n");
+ } else if (e.bt_strings == NULL) {
+ fprintf(stderr, "(backtrace not ready to be computed. %s)\n",xbt_binary_name?"Dunno why":"xbt_binary_name not setup yet");
+ } else {
+ int i;
- if(strcmp(mdp1->magic, mdp2->magic) != 0){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different magic number");
- errors++;
- }else{
- return 1;
+ fprintf(stderr, "Backtrace of where the fragment %zu in block %zu was malloced (%d frames):\n", frag, block ,e.used);
+ for (i = 0; i < e.used; i++) /* no need to display "xbt_backtrace_display" */{
+ fprintf(stderr,"%d",i);fflush(NULL);
+ fprintf(stderr, "---> %s\n", e.bt_strings[i] + 4);
}
}
+}
- if(mdp1->flags != mdp2->flags){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different flags");
- errors++;
- }else{
- return 1;
- }
- }
+int mmalloc_compare_heap(xbt_mheap_t mdp1, xbt_mheap_t mdp2){
- if(mdp1->heapsize != mdp2->heapsize){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different number of info entries");
- errors++;
- }else{
- return 1;
- }
+ if(mdp1 == NULL && mdp2 == NULL){
+ fprintf(stderr, "Malloc descriptors null\n");
+ return 0;
}
- //XBT_DEBUG("Heap size : %zu", mdp1->heapsize);
+ int errors = mmalloc_compare_mdesc(mdp1, mdp2);
- if(mdp1->heapbase != mdp2->heapbase){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different first block of the heap");
- errors++;
- }else{
- return 1;
- }
- }
+ return (errors > 0);
+}
- if(mdp1->heapindex != mdp2->heapindex){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different index for the heap table : %zu - %zu", mdp1->heapindex, mdp2->heapindex);
- errors++;
- }else{
- return 1;
- }
- }
+int mmalloc_compare_mdesc(struct mdesc *mdp1, struct mdesc *mdp2){
- //XBT_DEBUG("Heap index : %zu", mdp1->heapindex);
+ int errors = 0;
- if(mdp1->base != mdp2->base){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different base address of the memory region");
- errors++;
- }else{
- return 1;
- }
+ if(mdp1->heaplimit != mdp2->heaplimit){
+ fprintf(stderr,"Different limit of valid info table indices\n");
+ return 1;
}
- if(mdp1->breakval != mdp2->breakval){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different current location in the memory region");
- errors++;
- }else{
- return 1;
- }
- }
+ void* s_heap = (char *)mmalloc_get_current_heap() - STD_HEAP_SIZE - getpagesize();
- if(mdp1->top != mdp2->top){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different end of the current location in the memory region");
- errors++;
- }else{
- return 1;
- }
- }
+ fprintf(stderr, "s_heap->heapbase : %p\n", ((struct mdesc*)s_heap)->heapbase);
- if(mdp1->heaplimit != mdp2->heaplimit){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different limit of valid info table indices");
- errors++;
- }else{
- return 1;
- }
- }
+ void *heapbase1 = (char *)mdp1 + BLOCKSIZE;
+ void *heapbase2 = (char *)mdp2 + BLOCKSIZE;
- if(mdp1->fd != mdp2->fd){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different file descriptor for the file to which this malloc heap is mapped");
- errors++;
- }else{
- return 1;
- }
- }
+ fprintf(stderr, "Heapbase1 : %p, Heapbase2 : %p\n", heapbase1, heapbase2);
+ fprintf(stderr, "Heapinfo : %p\n", mdp1->heapinfo);
- if(mdp1->version != mdp2->version){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different version of the mmalloc package");
- errors++;
- }else{
- return 1;
- }
- }
+ malloc_info* heapinfo1 = (malloc_info *)((char *)mdp1 + ((char *)mdp1->heapinfo - (char *)s_heap));
+ malloc_info* heapinfo2 = (malloc_info *)((char *)mdp2 + ((char *)mdp2->heapinfo - (char *)s_heap));
+ fprintf(stderr, "Heapinfo1 : %p, Heapinfo2 : %p\n", heapinfo1, heapinfo2);
- size_t block_free1, block_free2 , next_block_free, first_block_free, block_free ;
size_t i, j;
- void *addr_block1, *addr_block2;
+ void *addr_block1 = NULL, *addr_block2 = NULL, *addr_frag1 = NULL, *addr_frag2 = NULL;
size_t frag_size;
+ i = 1;
- /* Search index of the first free block */
+ int k = 0;
+ int distance = 0;
+ int total_distance = 0;
- block_free1 = mdp1->heapindex;
- block_free2 = mdp2->heapindex;
+ int pointer_align;
+ void *address_pointed1 = NULL, *address_pointed2 = NULL;
- while(mdp1->heapinfo[block_free1].free_block.prev != 0){
- block_free1 = mdp1->heapinfo[block_free1].free_block.prev;
- }
+ int block_pointed1, block_pointed2, frag_pointed1, frag_pointed2;
+ void *addr_block_pointed1 = NULL, *addr_block_pointed2 = NULL, *addr_frag_pointed1 = NULL, *addr_frag_pointed2 = NULL;
- while(mdp2->heapinfo[block_free2].free_block.prev != 0){
- block_free2 = mdp1->heapinfo[block_free2].free_block.prev;
- }
+ /* Check busy blocks*/
- if(block_free1 != block_free2){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different first free block");
- errors++;
- }else{
- return 1;
- }
- }
-
- first_block_free = block_free1;
+ while(i < mdp1->heaplimit){
- if(mdp1->heapinfo[first_block_free].free_block.size != mdp2->heapinfo[first_block_free].free_block.size){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different size (in blocks) of the first free cluster");
+ if(heapinfo1[i].type != heapinfo2[i].type){
+ fprintf(stderr,"Different type of block : %d - %d\n", heapinfo1[i].type, heapinfo2[i].type);
errors++;
- }else{
- return 1;
}
- }
-
- /* Check busy blocks (circular checking)*/
- i = first_block_free + mdp1->heapinfo[first_block_free].free_block.size;
+ /* Get address of block i in each heap */
+ addr_block1 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase1));
+ addr_block2 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase2));
- if(mdp1->heapinfo[first_block_free].free_block.next != mdp2->heapinfo[first_block_free].free_block.next){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different next block free");
- errors++;
- }else{
- return 1;
- }
- }
+ if(heapinfo1[i].type == 0){ /* busy large block */
- block_free = first_block_free;
- next_block_free = mdp1->heapinfo[first_block_free].free_block.next;
-
- if(next_block_free == 0)
- next_block_free = mdp1->heaplimit;
-
- while(i != first_block_free){
-
- while(i<next_block_free){
-
- if(mdp1->heapinfo[i].type != mdp2->heapinfo[i].type){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different type of busy block");
- errors++;
- }else{
- return 1;
- }
- }else{
+ if(heapinfo1[i].busy_block.size != heapinfo2[i].busy_block.size){
+ fprintf(stderr,"Different size of a large cluster : %zu - %zu\n", heapinfo1[i].busy_block.size, heapinfo2[i].busy_block.size);
+ fflush(NULL);
+ errors++;
+ }
- addr_block1 = (char *)mdp1 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
- addr_block2 = (char *)mdp2 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
+ if(heapinfo1[i].busy_block.busy_size != heapinfo2[i].busy_block.busy_size){
+ fprintf(stderr,"Different busy_size of a large cluster : %zu - %zu\n", heapinfo1[i].busy_block.busy_size, heapinfo2[i].busy_block.busy_size);
+ fflush(NULL);
+ errors++;
+ }
- switch(mdp1->heapinfo[i].type){ //FIXME deal with type<0 == free
- case 0 :
- if(mdp1->heapinfo[i].busy_block.size != mdp2->heapinfo[i].busy_block.size){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different size of a large cluster");
- errors++;
- }else{
- return 1;
- }
- }else{
- if(memcmp(addr_block1, addr_block2, (mdp1->heapinfo[i].busy_block.size * BLOCKSIZE)) != 0){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different data in block %zu (size = %zu) (addr_block1 = %p (current = %p) - addr_block2 = %p)", i, mdp1->heapinfo[i].busy_block.size, addr_block1, (char *)std_heap_addr + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE), addr_block2);
- errors++;
+ /* Hamming distance on different blocks */
+ distance = 0;
+
+
+ for(k=0;k<heapinfo1[i].busy_block.busy_size;k++){
+
+ if(memcmp(((char *)addr_block1) + k, ((char *)addr_block2) + k, 1) != 0){
+
+ fprintf(stderr, "Different byte (offset=%d) (%p - %p) in block %zu\n", k, (char *)addr_block1 + k, (char *)addr_block2 + k, i); fflush(NULL);
+
+ /* Check if pointer difference */
+ pointer_align = (k >> sizeof(void*)) * sizeof(void*);
+ address_pointed1 = *((void **)((char *)addr_block1 + pointer_align));
+ address_pointed2 = *((void **)((char *)addr_block2 + pointer_align));
+
+ fprintf(stderr, "Addresses pointed : %p - %p \n", address_pointed1, address_pointed2);
+
+ /* Get block number */
+ block_pointed1 = ((char*)address_pointed1 - (char*)((struct mdesc*)s_heap)->heapbase) / BLOCKSIZE + 1;
+ block_pointed2 = ((char*)address_pointed2 - (char*)((struct mdesc*)s_heap)->heapbase) / BLOCKSIZE + 1;
+
+ fprintf(stderr, "Blocks pointed : %d - %d\n", block_pointed1, block_pointed2);
+
+ if((char *) address_pointed1 < (char*)((struct mdesc*)s_heap)->heapbase || block_pointed1 > mdp1->heapsize || block_pointed1 < 1 || (char *) address_pointed2 < (char*)((struct mdesc*)s_heap)->heapbase || block_pointed2 > mdp2->heapsize || block_pointed2 < 1) {
+ fprintf(stderr, "Unknown pointer(s) ! \n");
+ fflush(NULL);
+ distance++;
+ continue;
+ }
+
+ addr_block_pointed1 = ((void*) (((ADDR2UINT((size_t)block_pointed1)) - 1) * BLOCKSIZE + (char*)heapbase1));
+ addr_block_pointed2 = ((void*) (((ADDR2UINT((size_t)block_pointed2)) - 1) * BLOCKSIZE + (char*)heapbase2));
+
+ fprintf(stderr, "Addr blocks pointed : %p - %p\n", addr_block_pointed1, addr_block_pointed2);
+
+ if(heapinfo1[block_pointed1].type == heapinfo2[block_pointed2].type){
+
+ if(heapinfo1[block_pointed1].type == 0){ // Large block
+
+ if(heapinfo1[block_pointed1].busy_block.busy_size == heapinfo2[block_pointed2].busy_block.busy_size){
+
+ if(memcmp(addr_block_pointed1, addr_block_pointed2, heapinfo1[block_pointed1].busy_block.busy_size) != 0){
+ distance++;
+ }else{
+ fprintf(stderr, "False difference detected\n");
+ }
+
}else{
- return 1;
+ distance++;
}
- }
- }
- i = i+mdp1->heapinfo[i].busy_block.size;
-
- break;
- default :
- if(mdp1->heapinfo[i].busy_frag.nfree != mdp2->heapinfo[i].busy_frag.nfree){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different free fragments in the fragmented block %zu", i);
- errors++;
- }else{
- return 1;
- }
- }else{
- if(mdp1->heapinfo[i].busy_frag.first != mdp2->heapinfo[i].busy_frag.first){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different first free fragments in the block %zu", i);
- errors++;
+
+ }else{ // Fragmented block
+
+ /* Get fragment number */
+ frag_pointed1 = ((uintptr_t) (ADDR2UINT (address_pointed1) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed1].type;
+ frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed2].type;
+
+ fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+
+ addr_frag_pointed1 = (char*)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, heapinfo1[block_pointed1].type));
+ addr_frag_pointed2 = (char*)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, heapinfo2[block_pointed2].type));
+
+ fprintf(stderr, "Addr frag pointed : %p - %p\n", addr_frag_pointed1, addr_frag_pointed2);
+
+ fprintf(stderr, "Size used in fragments pointed : %d - %d\n", heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1], heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]);
+
+ if(heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1] == heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+ if(memcmp(addr_frag_pointed1, addr_frag_pointed2, heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+ distance++;
+ }else{
+ fprintf(stderr, "False difference detected\n");
+ }
+
}else{
- return 1;
+ distance ++;
}
+ }
+
+ }else{
+
+ if(((heapinfo1[block_pointed1].type == 0) && (heapinfo2[block_pointed2].type != 0)) || ((heapinfo1[block_pointed1].type != 0) && (heapinfo2[block_pointed2].type == 0))){
+ fprintf(stderr, "Pointers on blocks with different types \n");
+ distance++;
}else{
- frag_size = pow(2,mdp1->heapinfo[i].type);
- for(j=0 ; j< (BLOCKSIZE/frag_size); j++){
- if(memcmp((char *)addr_block1 + (j * frag_size), (char *)addr_block2 + (j * frag_size), frag_size) != 0){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different data in fragment %zu (addr_frag1 = %p - addr_frag2 = %p) of block %zu", j + 1, (char *)addr_block1 + (j * frag_size), (char *)addr_block2 + (j * frag_size), i);
- errors++;
- }else{
- return 1;
- }
+
+ frag_pointed1 = ((uintptr_t) (ADDR2UINT (address_pointed1) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed1].type;
+ frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed2].type;
+
+ fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+
+ addr_frag_pointed1 = (char*)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, heapinfo1[block_pointed1].type));
+ addr_frag_pointed2 = (char*)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, heapinfo2[block_pointed2].type));
+
+ fprintf(stderr, "Addr frag pointed : %p - %p\n", addr_frag_pointed1, addr_frag_pointed2);
+
+ fprintf(stderr, "Size used in fragments pointed : %d - %d\n", heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1], heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]);
+
+ if(heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1] == heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+ if(memcmp(addr_frag_pointed1, addr_frag_pointed2, heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+ distance++;
+ }else{
+ fprintf(stderr, "False difference detected\n");
}
+
+ }else{
+ distance ++;
}
}
}
-
- i++;
-
- break;
}
+
+ }
+
+ if(distance>0){
+ fprintf(stderr,"\nDifferent data in large block %zu (size = %zu (in blocks), busy_size = %zu (in bytes))\n", i, heapinfo1[i].busy_block.size, heapinfo1[i].busy_block.busy_size);
+ fflush(NULL);
+ fprintf(stderr, "Hamming distance between blocks : %d\n", distance);
+ mmalloc_backtrace_block_display(heapinfo1, i);
+ mmalloc_backtrace_block_display(heapinfo2, i);
+ fprintf(stderr, "\n");
+ errors++;
+ total_distance += distance;
}
- }
- if( i != first_block_free){
+ i++;
+
+ }else{
- if(mdp1->heapinfo[block_free].free_block.next != mdp2->heapinfo[block_free].free_block.next){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different next block free");
+ if(heapinfo1[i].type > 0){ /* busy fragmented block */
+
+ if(heapinfo1[i].type != heapinfo2[i].type){
+ fprintf(stderr,"Different size of fragments in fragmented block %zu : %d - %d\n", i, heapinfo1[i].type, heapinfo2[i].type); fflush(NULL);
errors++;
- }else{
- return 1;
}
- }
- block_free = mdp1->heapinfo[block_free].free_block.next;
- next_block_free = mdp1->heapinfo[block_free].free_block.next;
+ if(heapinfo1[i].busy_frag.nfree != heapinfo2[i].busy_frag.nfree){
+ fprintf(stderr,"Different free fragments in fragmented block %zu : %zu - %zu\n", i, heapinfo1[i].busy_frag.nfree, heapinfo2[i].busy_frag.nfree); fflush(NULL);
+ errors++;
+ }
- i = block_free + mdp1->heapinfo[block_free].free_block.size;
+ if(heapinfo1[i].busy_frag.first != heapinfo2[i].busy_frag.first){
+ fprintf(stderr,"Different first free fragment in fragmented block %zu : %zu - %zu\n", i, heapinfo1[i].busy_frag.first, heapinfo2[i].busy_frag.first); fflush(NULL);
+ errors++;
+ }
- if((next_block_free == 0) && (i != mdp1->heaplimit)){
+ frag_size = pow(2, heapinfo1[i].type);
- while(i < mdp1->heaplimit){
+ for(j=0; j< (BLOCKSIZE/frag_size); j++){
- if(mdp1->heapinfo[i].type != mdp2->heapinfo[i].type){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different type of busy block");
- errors++;
- }else{
- return 1;
- }
- }else{
+ if(heapinfo1[i].busy_frag.frag_size[j] != heapinfo2[i].busy_frag.frag_size[j]){
+ fprintf(stderr,"Different busy_size for fragment %zu in block %zu : %hu - %hu\n", j, i, heapinfo1[i].busy_frag.frag_size[j], heapinfo2[i].busy_frag.frag_size[j]); fflush(NULL);
+ errors++;
+ }
- addr_block1 = (char *)mdp1 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
- addr_block2 = (char *)mdp2 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
+ if(heapinfo1[i].busy_frag.frag_size[j] > 0){
- switch(mdp1->heapinfo[i].type){
- case 0 :
- if(mdp1->heapinfo[i].busy_block.size != mdp2->heapinfo[i].busy_block.size){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different size of a large cluster");
- errors++;
- }else{
- return 1;
- }
- }else{
- if(memcmp(addr_block1, addr_block2, (mdp1->heapinfo[i].busy_block.size * BLOCKSIZE)) != 0){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different data in block %zu (addr_block1 = %p (current = %p) - addr_block2 = %p)", i, addr_block1, (char *)std_heap_addr + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE), addr_block2);
- errors++;
- }else{
- return 1;
- }
- }
- }
+ addr_frag1 = (char *)addr_block1 + (j * frag_size);
+ addr_frag2 = (char *)addr_block2 + (j * frag_size);
- i = i+mdp1->heapinfo[i].busy_block.size;
+ /* Hamming distance on different blocks */
+ distance = 0;
- break;
- default :
- if(mdp1->heapinfo[i].busy_frag.nfree != mdp2->heapinfo[i].busy_frag.nfree){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different free fragments in the fragmented block %zu", i);
- errors++;
- }else{
- return 1;
+ for(k=0;k<heapinfo1[i].busy_frag.frag_size[j];k++){
+
+ if(memcmp(((char *)addr_frag1) + k, ((char *)addr_frag2) + k, 1) != 0){
+
+ fprintf(stderr, "Different byte (offset=%d) (%p - %p) in fragment %zu in block %zu\n", k, (char *)addr_frag1 + k, (char *)addr_frag2 + k, j, i); fflush(NULL);
+
+ pointer_align = (k / sizeof(void*)) * sizeof(void*);
+ address_pointed1 = *((void **)((char *)addr_frag1 + pointer_align));
+ address_pointed2 = *((void **)((char *)addr_frag2 + pointer_align));
+
+ fprintf(stderr, "Addresses pointed : %p - %p \n", address_pointed1, address_pointed2);
+
+
+ block_pointed1 = ((char*)address_pointed1 - (char*)((struct mdesc*)s_heap)->heapbase) / BLOCKSIZE + 1;
+ block_pointed2 = ((char*)address_pointed2 - (char*)((struct mdesc*)s_heap)->heapbase) / BLOCKSIZE + 1;
+
+ fprintf(stderr, "Blocks pointed : %d - %d\n", block_pointed1, block_pointed2);
+
+ if((char *) address_pointed1 < (char*)((struct mdesc*)s_heap)->heapbase || block_pointed1 > mdp1->heapsize || block_pointed1 < 1 || (char *) address_pointed2 < (char*)((struct mdesc*)s_heap)->heapbase || block_pointed2 > mdp2->heapsize || block_pointed2 < 1) {
+ fprintf(stderr, "Unknown pointer(s) ! \n");
+ fflush(NULL);
+ distance++;
+ continue;
}
- }else{
- if(mdp1->heapinfo[i].busy_frag.first != mdp2->heapinfo[i].busy_frag.first){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different first free fragments in the block %zu", i);
- errors++;
- }else{
- return 1;
+
+ addr_block_pointed1 = ((void*) (((ADDR2UINT((size_t)block_pointed1)) - 1) * BLOCKSIZE + (char*)heapbase1));
+ addr_block_pointed2 = ((void*) (((ADDR2UINT((size_t)block_pointed2)) - 1) * BLOCKSIZE + (char*)heapbase2));
+
+ fprintf(stderr, "Addr block pointed : %p - %p\n", addr_block_pointed1, addr_block_pointed2);
+
+ if(heapinfo1[block_pointed1].type == heapinfo2[block_pointed2].type){
+
+ if(heapinfo1[block_pointed1].type == 0){ // Large block
+
+ if(heapinfo1[block_pointed1].busy_block.busy_size == heapinfo2[block_pointed2].busy_block.busy_size){
+
+ if(memcmp(addr_block_pointed1, addr_block_pointed2, heapinfo1[block_pointed1].busy_block.busy_size) != 0){
+ distance++;
+ }else{
+ fprintf(stderr, "False difference detected\n");
+ }
+
+ }else{
+ distance++;
+ }
+
+ }else{ // Fragmented block
+
+ frag_pointed1 = ((uintptr_t) (ADDR2UINT (address_pointed1) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed1].type;
+ frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed2].type;
+
+ fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+
+ addr_frag_pointed1 = (char*)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, heapinfo1[block_pointed1].type));
+ addr_frag_pointed2 = (char*)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, heapinfo2[block_pointed2].type));
+
+ fprintf(stderr, "Addr frag pointed : %p - %p\n", addr_frag_pointed1, addr_frag_pointed2);
+
+ fprintf(stderr, "Size used in fragments pointed : %d - %d\n", heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1], heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]);
+
+ if(heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1] == heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+ if(memcmp(addr_frag_pointed1, addr_frag_pointed2, heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+ distance++;
+ }else{
+ fprintf(stderr, "False difference detected\n");
+ }
+
+ }else{
+ distance ++;
+ }
}
+
}else{
- frag_size = pow(2,mdp1->heapinfo[i].type);
- for(j=0 ; j< (BLOCKSIZE/frag_size); j++){
- if(memcmp((char *)addr_block1 + (j * frag_size), (char *)addr_block2 + (j * frag_size), frag_size) != 0){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different data in fragment %zu (addr_frag1 = %p - addr_frag2 = %p) of block %zu", j + 1, (char *)addr_block1 + (j * frag_size), (char *)addr_block2 + (j * frag_size), i);
- errors++;
+
+ if(((heapinfo1[block_pointed1].type == 0) && (heapinfo2[block_pointed2].type != 0)) || ((heapinfo1[block_pointed1].type != 0) && (heapinfo2[block_pointed2].type == 0))){
+ fprintf(stderr, "Pointers on blocks with different types \n");
+ distance++;
+ }else{
+
+ frag_pointed1 = ((uintptr_t) (ADDR2UINT (address_pointed1) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed1].type;
+ frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> ((struct mdesc*)s_heap)->heapinfo[block_pointed2].type;
+
+ fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+
+ addr_frag_pointed1 = (char*)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, heapinfo1[block_pointed1].type));
+ addr_frag_pointed2 = (char*)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, heapinfo2[block_pointed2].type));
+
+ fprintf(stderr, "Addr frag pointed : %p - %p\n", addr_frag_pointed1, addr_frag_pointed2);
+
+ fprintf(stderr, "Size used in fragments pointed : %d - %d\n", heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1], heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]);
+
+ if(heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1] == heapinfo2[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+ if(memcmp(addr_frag_pointed1, addr_frag_pointed2, heapinfo1[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+ distance++;
}else{
- return 1;
+ fprintf(stderr, "False difference detected\n");
}
+
+ }else{
+ distance ++;
}
}
+
}
}
- i++;
+ }
+
+ if(distance > 0){
+ fprintf(stderr,"\nDifferent data in fragment %zu (size = %zu, size used = %hu) in block %zu \n", j, frag_size, heapinfo1[i].busy_frag.frag_size[j], i);
+ fprintf(stderr, "Hamming distance between fragments : %d\n", distance);
+ mmalloc_backtrace_fragment_display(heapinfo1, i, j);
+ mmalloc_backtrace_fragment_display(heapinfo2, i, j);
+ fprintf(stderr, "\n");
+ errors++;
+ total_distance += distance;
- break;
}
+
}
}
+ i++;
+
+ }else{ /* free block */
+
+ i++;
+
}
}
+
}
- return (errors>0);
+
+ fprintf(stderr, "Hamming distance between heap regions : %d\n", total_distance);
+
+ return (errors);
}
-void mmalloc_display_info_heap(xbt_mheap_t h){
+/* void *get_end_addr_heap(void *heap){ */
-}
+/* FILE *fp; /\* File pointer to process's proc maps file *\/ */
+/* char *line = NULL; /\* Temporal storage for each line that is readed *\/ */
+/* ssize_t read; /\* Number of bytes readed *\/ */
+/* size_t n = 0; /\* Amount of bytes to read by getline *\/ */
+
+/* fp = fopen("/proc/self/maps", "r"); */
+
+/* if(fp == NULL) */
+/* perror("fopen failed"); */
+
+
+/* xbt_dynar_t lfields = NULL; */
+/* xbt_dynar_t start_end = NULL; */
+/* void *start_addr; */
+/* void *end_addr; */
+
+/* while ((read = getline(&line, &n, fp)) != -1) { */
+
+/* xbt_str_trim(line, NULL); */
+/* xbt_str_strip_spaces(line); */
+/* lfields = xbt_str_split(line,NULL); */
+
+/* start_end = xbt_str_split(xbt_dynar_get_as(lfields, 0, char*), "-"); */
+/* start_addr = (void *) strtoul(xbt_dynar_get_as(start_end, 0, char*), NULL, 16); */
+/* end_addr = (void *) strtoul(xbt_dynar_get_as(start_end, 1, char*), NULL, 16); */
+
+/* if(start_addr == heap){ */
+/* free(line); */
+/* fclose(fp); */
+/* xbt_dynar_reset(lfields); */
+/* xbt_free(lfields); */
+/* xbt_dynar_reset(start_end); */
+/* xbt_free(start_end); */
+/* return end_addr; */
+/* } */
+
+/* } */
+
+/* xbt_dynar_reset(lfields); */
+/* xbt_free(lfields); */
+/* xbt_dynar_reset(start_end); */
+/* xbt_free(start_end); */
+/* free(line); */
+/* fclose(fp); */
+/* return NULL; */
+
+
+/* } */
