X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8d510dd9844ff0da71e3856a38fe067973d03e04..844d5085f16498071d85e6b89e14c8db8191c13e:/src/xbt/mmalloc/mm_diff.c

diff --git a/src/xbt/mmalloc/mm_diff.c b/src/xbt/mmalloc/mm_diff.c
index 988bbe3685..8ca37d0022 100644
--- a/src/xbt/mmalloc/mm_diff.c
+++ b/src/xbt/mmalloc/mm_diff.c
@@ -6,6 +6,8 @@
  * 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"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mm_diff, xbt,
                                 "Logging specific to mm_diff in mmalloc");
@@ -44,7 +46,7 @@ void mmalloc_backtrace_display(xbt_mheap_t mdp, void *ptr){
   } 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 %p was malloced (%d frames):\n",ptr,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);
@@ -80,7 +82,7 @@ void mmalloc_backtrace_block_display(xbt_mheap_t mdp, size_t block){
   } else {
     int i;
 
-    fprintf(stderr, "Backtrace of where the block %zu where malloced (%d frames):\n", block ,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);
@@ -89,7 +91,7 @@ void mmalloc_backtrace_block_display(xbt_mheap_t mdp, size_t block){
 }
 
 void mmalloc_backtrace_fragment_display(xbt_mheap_t mdp, size_t block, size_t frag){
-  
+
   xbt_ex_t e;
 
   memcpy(&e.bt,&(mdp->heapinfo[block].busy_frag.bt[frag]),sizeof(void*)*XBT_BACKTRACE_SIZE);
@@ -103,7 +105,7 @@ void mmalloc_backtrace_fragment_display(xbt_mheap_t mdp, size_t block, size_t fr
   } else {
     int i;
 
-    fprintf(stderr, "Backtrace of where the fragment %zu in block %zu where malloced (%d frames):\n", frag, block ,e.used);
+    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);
@@ -114,7 +116,7 @@ void mmalloc_backtrace_fragment_display(xbt_mheap_t mdp, size_t block, size_t fr
 int mmalloc_compare_heap(xbt_mheap_t mdp1, xbt_mheap_t mdp2){
 
   if(mdp1 == NULL && mdp2 == NULL){
-    XBT_DEBUG("Malloc descriptors null\n");
+    fprintf(stderr, "Malloc descriptors null\n");
     return 0;
   }
 
@@ -128,200 +130,480 @@ int mmalloc_compare_mdesc(struct mdesc *mdp1, struct mdesc *mdp2){
 
   int errors = 0;
 
-  if(mdp1->headersize != mdp2->headersize){
-    fprintf(stderr, "Different size of the file header for the mapped files\n");
-    return 1;
-  }
-
-  if(mdp1->refcount != mdp2->refcount){
-    fprintf(stderr, "Different number of processes that attached the heap\n");
-    return 1;
-  }
-
-  if(strcmp(mdp1->magic, mdp2->magic) != 0){
-    fprintf(stderr,"Different magic number\n");
-    return 1;
-  }
-
-  if(mdp1->flags != mdp2->flags){
-    fprintf(stderr,"Different flags\n");  
-    return 1;
-  }
-
-  if(mdp1->heapsize != mdp2->heapsize){
-    fprintf(stderr,"Different number of info entries\n");
-    return 1;
-  }
-  
-
-  if(mdp1->heapbase != mdp2->heapbase){
-    fprintf(stderr,"Different first block of the heap\n");
-    return 1;
-  }
-
-
-  if(mdp1->heapindex != mdp2->heapindex){
-    fprintf(stderr,"Different index for the heap table : %zu - %zu\n", mdp1->heapindex, mdp2->heapindex);
-    return 1;
-  }
-
-
-  if(mdp1->base != mdp2->base){
-    fprintf(stderr,"Different base address of the memory region\n");
-    return 1;
-  }
-
-  if(mdp1->breakval != mdp2->breakval){
-    fprintf(stderr,"Different current location in the memory region\n");
-    return 1;
-  }
-
-  if(mdp1->top != mdp2->top){
-    fprintf(stderr,"Different end of the current location in the memory region\n");
-    return 1;
-  }
-
   if(mdp1->heaplimit != mdp2->heaplimit){
     fprintf(stderr,"Different limit of valid info table indices\n");
     return 1;
   }
 
-  if(mdp1->fd != mdp2->fd){
-    fprintf(stderr,"Different file descriptor for the file to which this malloc heap is mapped\n");
-    return 1;
-  }
-
-  if(mdp1->version != mdp2->version){
-    fprintf(stderr,"Different version of the mmalloc package\n");
-    return 1;
-  }
+  void* s_heap = (char *)mmalloc_get_current_heap() - STD_HEAP_SIZE - getpagesize();
 
+  void *heapbase1 = (char *)mdp1 + BLOCKSIZE;
+  void *heapbase2 = (char *)mdp2 + BLOCKSIZE;
 
   size_t i, j;
   void *addr_block1, *addr_block2, *addr_frag1, *addr_frag2;
   size_t frag_size;
 
-  i = 0;
+  i = 1;
 
   int k;
   int distance = 0;
+  int total_distance = 0;
+
+  int pointer_align;
+  void *address_pointed1, *address_pointed2;
+
+  int block_pointed1, block_pointed2, frag_pointed1, frag_pointed2;
+  void *addr_block_pointed1, *addr_block_pointed2, *addr_frag_pointed1, *addr_frag_pointed2;
 
   /* Check busy blocks*/
 
-  while(i < mdp1->heapindex){
+  while(i < mdp1->heaplimit){
 
     if(mdp1->heapinfo[i].type != mdp2->heapinfo[i].type){
       fprintf(stderr,"Different type of block : %d - %d\n", mdp1->heapinfo[i].type, mdp2->heapinfo[i].type);
       errors++;
     }
 
-    addr_block1 = (char *)mdp1 + sizeof(struct mdesc) + (i * BLOCKSIZE);
-    addr_block2 = (char *)mdp2 + sizeof(struct mdesc) + (i * BLOCKSIZE);
+    /* 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[i].type == 0){ /* busy large block */
 
       if(mdp1->heapinfo[i].busy_block.size != mdp2->heapinfo[i].busy_block.size){
-	fprintf(stderr,"Different size of a large cluster : %zu - %zu\n", mdp1->heapinfo[i].busy_block.size, mdp2->heapinfo[i].busy_block.size);
-	errors++;
-      } 
+        fprintf(stderr,"Different size of a large cluster : %zu - %zu\n", mdp1->heapinfo[i].busy_block.size, mdp2->heapinfo[i].busy_block.size); 
+        fflush(NULL);
+        errors++;
+      }
 
       if(mdp1->heapinfo[i].busy_block.busy_size != mdp2->heapinfo[i].busy_block.busy_size){
-	fprintf(stderr,"Different busy_size of a large cluster : %zu - %zu\n", mdp1->heapinfo[i].busy_block.busy_size, mdp2->heapinfo[i].busy_block.busy_size);
-	errors++;
-      } 
-
-      if(memcmp(addr_block1, addr_block2, (mdp1->heapinfo[i].busy_block.busy_size)) != 0){
-	fprintf(stderr,"\nDifferent data in large block %zu (size = %zu (in blocks), busy_size = %zu (in bytes))\n", i, mdp1->heapinfo[i].busy_block.size, mdp1->heapinfo[i].busy_block.busy_size);
-
-	/* Hamming distance on different blocks */
-	distance = 0;
-	for(k=0;k<mdp1->heapinfo[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, (char *)addr_block2, i); 
-	    distance++;
-	  }
-	}
-
-	fprintf(stderr, "Hamming distance between blocks : %d\n", distance);
-
-	mmalloc_backtrace_block_display(mdp1, i);
-	mmalloc_backtrace_block_display(mdp2, i);
-	errors++;
+        fprintf(stderr,"Different busy_size of a large cluster : %zu - %zu\n", mdp1->heapinfo[i].busy_block.busy_size, mdp2->heapinfo[i].busy_block.busy_size); 
+        fflush(NULL);
+        errors++;
       }
 
-   
-      i = i + mdp1->heapinfo[i].busy_block.size;
+      /* Hamming distance on different blocks */
+      distance = 0;
+
+
+      for(k=0;k<mdp1->heapinfo[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);
+          
+          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;
+          }
+
+          /*if(((char *) address_pointed1 > (char*)((struct mdesc*)s_heap)->heapbase) && (block_pointed1 < mdp1->heapsize) && (block_pointed1 >= 1)){
+            addr_block_pointed1 = ((void*) (((ADDR2UINT((size_t)block_pointed1)) - 1) * BLOCKSIZE + (char*)heapbase1));
+            if(((char *) address_pointed2 > (char*)((struct mdesc*)s_heap)->heapbase) && (block_pointed2 < mdp2->heapsize) && (block_pointed2 >= 1)){
+              addr_block_pointed2 = ((void*) (((ADDR2UINT((size_t)block_pointed2)) - 1) * BLOCKSIZE + (char*)heapbase2));
+            }else{
+              addr_block_pointed2 = addr_block2;
+              block_pointed2 = i;
+            }
+          }else{
+            addr_block_pointed1 = addr_block1;
+            block_pointed1 = i;
+            if(((char *) address_pointed2 > (char*)((struct mdesc*)s_heap)->heapbase) && (block_pointed2 < mdp2->heapsize) && (block_pointed2 >= 1)){
+              addr_block_pointed2 = ((void*) (((ADDR2UINT((size_t)block_pointed2)) - 1) * BLOCKSIZE + (char*)heapbase2));
+            }else{
+              fprintf(stderr, "Unknown pointers ! \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));
+          
+          if(mdp1->heapinfo[block_pointed1].type == mdp2->heapinfo[block_pointed2].type){
+            
+            if(mdp1->heapinfo[block_pointed1].type == 0){ // Large block
+              
+              if(mdp1->heapinfo[block_pointed1].busy_block.busy_size == mdp2->heapinfo[block_pointed2].busy_block.busy_size){
+                
+                if(memcmp(addr_block_pointed1, addr_block_pointed2, mdp1->heapinfo[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))) >> mdp1->heapinfo[block_pointed1].type;
+              frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> mdp2->heapinfo[block_pointed2].type;             
+                            
+              fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+              
+              if((frag_pointed1 < 0) || (frag_pointed1 > (BLOCKSIZE / pow( 2, mdp1->heapinfo[block_pointed1].type))) || (frag_pointed2 < 0) || (frag_pointed2 > (BLOCKSIZE / pow( 2, mdp2->heapinfo[block_pointed2].type)))){
+                fprintf(stderr, "Unknown pointer(s) ! \n");
+                fflush(NULL);
+                distance++;
+                continue;
+              } 
+
+              fprintf(stderr, "Size used in fragments pointed : %d - %d\n", mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1], mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]);  
+              
+              if(mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1] == mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+                addr_frag_pointed1 = (char *)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, mdp1->heapinfo[block_pointed1].type));
+                addr_frag_pointed2 = (char *)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, mdp2->heapinfo[block_pointed2].type));
+                
+                if(memcmp(addr_frag_pointed1, addr_frag_pointed2, mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+                  distance++;
+                }else{
+                  fprintf(stderr, "False difference detected\n");
+                }
+                
+              }else{
+                distance ++;
+              }
+            }
+            
+          }else{
+
+            if(((mdp1->heapinfo[block_pointed1].type == 0) && (mdp2->heapinfo[block_pointed2].type != 0)) || ((mdp1->heapinfo[block_pointed1].type != 0) && (mdp2->heapinfo[block_pointed2].type == 0))){  
+              fprintf(stderr, "Pointers on blocks with different types \n");
+              distance++;
+            }else{
+             
+              frag_pointed1 = ((uintptr_t) (ADDR2UINT (address_pointed1) % (BLOCKSIZE))) >> mdp1->heapinfo[block_pointed1].type;
+              frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> mdp2->heapinfo[block_pointed2].type;
+            
+              fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+              
+              if((frag_pointed1 < 0) || (frag_pointed1 > (BLOCKSIZE / pow( 2, mdp1->heapinfo[block_pointed1].type))) || (frag_pointed2 < 0) || (frag_pointed2 > (BLOCKSIZE / pow( 2, mdp2->heapinfo[block_pointed2].type)))){
+                fprintf(stderr, "Unknown pointer(s) ! \n");
+                fflush(NULL);
+                distance++;
+                continue;
+              } 
+              
+              fprintf(stderr, "Size used in fragments pointed : %d - %d\n", mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1], mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]); 
+              
+              if(mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1] == mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+                addr_frag_pointed1 = (char *)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, mdp1->heapinfo[block_pointed1].type));
+                addr_frag_pointed2 = (char *)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, mdp2->heapinfo[block_pointed2].type));
+                                
+                if(memcmp(addr_frag_pointed1, addr_frag_pointed2, mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+                  distance++;
+                }else{
+                  fprintf(stderr, "False difference detected\n");
+                }
+                
+              }else{
+                distance ++;
+              }
+            }
+          }
+        }
+     
+      }
+
+
+      if(distance>0){
+        fprintf(stderr,"\nDifferent data in large block %zu (size = %zu (in blocks), busy_size = %zu (in bytes))\n", i, mdp1->heapinfo[i].busy_block.size, mdp1->heapinfo[i].busy_block.busy_size);
+        fflush(NULL);
+        fprintf(stderr, "Hamming distance between blocks : %d\n", distance);
+        mmalloc_backtrace_block_display(mdp1, i);
+        mmalloc_backtrace_block_display(mdp2, i);
+        fprintf(stderr, "\n");
+        errors++;
+        total_distance += distance;
+      }
+
+      i++;
 
     }else{
-      
+
       if(mdp1->heapinfo[i].type > 0){ /* busy fragmented block */
 
-	if(mdp1->heapinfo[i].type != mdp2->heapinfo[i].type){
-	  fprintf(stderr,"Different size of fragments in fragmented block %zu : %d - %d\n", i, mdp1->heapinfo[i].type, mdp2->heapinfo[i].type);
-	  errors++;
-	}
+        if(mdp1->heapinfo[i].type != mdp2->heapinfo[i].type){
+          fprintf(stderr,"Different size of fragments in fragmented block %zu : %d - %d\n", i, mdp1->heapinfo[i].type, mdp2->heapinfo[i].type); fflush(NULL);
+          errors++;
+        }
+
+        if(mdp1->heapinfo[i].busy_frag.nfree != mdp2->heapinfo[i].busy_frag.nfree){
+          fprintf(stderr,"Different free fragments in fragmented block %zu : %zu - %zu\n", i, mdp1->heapinfo[i].busy_frag.nfree, mdp2->heapinfo[i].busy_frag.nfree); fflush(NULL);
+          errors++;
+        }
+
+        if(mdp1->heapinfo[i].busy_frag.first != mdp2->heapinfo[i].busy_frag.first){
+          fprintf(stderr,"Different busy_size of a large cluster : %zu - %zu\n", mdp1->heapinfo[i].busy_block.busy_size, mdp2->heapinfo[i].busy_block.busy_size); fflush(NULL);
+          errors++;
+        }
+
+        frag_size = pow(2, mdp1->heapinfo[i].type);
+
+        for(j=0; j< (BLOCKSIZE/frag_size); j++){
+
+          if(mdp1->heapinfo[i].busy_frag.frag_size[j] != mdp2->heapinfo[i].busy_frag.frag_size[j]){
+            fprintf(stderr,"Different busy_size for fragment %zu in block %zu : %hu - %hu\n", j, i, mdp1->heapinfo[i].busy_frag.frag_size[j], mdp2->heapinfo[i].busy_frag.frag_size[j]); fflush(NULL);
+            errors++;
+          }
+
+          if(mdp1->heapinfo[i].busy_frag.frag_size[j] > 0){
+
+            addr_frag1 = (char *)addr_block1 + (j * frag_size);
+            addr_frag2 = (char *)addr_block2 + (j * frag_size);
+
+            /* Hamming distance on different blocks */
+            distance = 0;
+
+            for(k=0;k<mdp1->heapinfo[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 ! \n");
+                  fflush(NULL);
+                  distance++;
+                  continue;
+                }
+
+                /*if(((char *) address_pointed1 > (char*)((struct mdesc*)s_heap)->heapbase) && (block_pointed1 < mdp1->heapsize) && (block_pointed1 >= 1)){
+                  addr_block_pointed1 = ((void*) (((ADDR2UINT((size_t)block_pointed1)) - 1) * BLOCKSIZE + (char*)heapbase1));
+                  pointer1 = 1;
+                  if(((char *) address_pointed2 > (char*)((struct mdesc*)s_heap)->heapbase) && (block_pointed2 < mdp2->heapsize) && (block_pointed2 >= 1)){
+                    addr_block_pointed2 = ((void*) (((ADDR2UINT((size_t)block_pointed2)) - 1) * BLOCKSIZE + (char*)heapbase2));
+                    pointer2 = 1;
+                  }else{
+                    pointer2 = 0;
+                    addr_block_pointed2 = addr_block2;
+                    block_pointed2 = i;
+                  }
+                }else{
+                  addr_block_pointed1 = addr_block1;
+                  block_pointed1 = i;
+                  pointer1 = 0;
+                  if(((char *) address_pointed2 > (char*)((struct mdesc*)s_heap)->heapbase) && (block_pointed2 < mdp2->heapsize) && (block_pointed2 >= 1)){
+                    addr_block_pointed2 = ((void*) (((ADDR2UINT((size_t)block_pointed2)) - 1) * BLOCKSIZE + (char*)heapbase2));
+                    pointer2 = 1;
+                  }else{
+                    fprintf(stderr, "Unknown pointers ! \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));
+                
+                if(mdp1->heapinfo[block_pointed1].type == mdp2->heapinfo[block_pointed2].type){
+                  
+                  if(mdp1->heapinfo[block_pointed1].type == 0){ // Large block
+                    
+                    if(mdp1->heapinfo[block_pointed1].busy_block.busy_size == mdp2->heapinfo[block_pointed2].busy_block.busy_size){
+                      
+                      if(memcmp(addr_block_pointed1, addr_block_pointed2, mdp1->heapinfo[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))) >> mdp1->heapinfo[block_pointed1].type;
+                    frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> mdp2->heapinfo[block_pointed2].type;
+                   
+                    fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+                    
+                    if((frag_pointed1 < 0) || (frag_pointed1 > (BLOCKSIZE / pow( 2, mdp1->heapinfo[block_pointed1].type))) || (frag_pointed2 < 0) || (frag_pointed2 > (BLOCKSIZE / pow( 2, mdp2->heapinfo[block_pointed2].type)))){
+                       fprintf(stderr, "Unknown pointer ! \n");
+                       fflush(NULL);
+                       distance++;
+                       continue;
+                    } 
+
+                    fprintf(stderr, "Size used in fragments pointed : %d - %d\n", mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1], mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]); 
+                                        
+                    if(mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1] == mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+                      addr_frag_pointed1 = (char *)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, mdp1->heapinfo[block_pointed1].type));
+                      addr_frag_pointed2 = (char *)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, mdp2->heapinfo[block_pointed2].type));
+                      
+                      if(memcmp(addr_frag_pointed1, addr_frag_pointed2, mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+                        distance++;
+                      }else{
+                        fprintf(stderr, "False difference detected\n");
+                      }
+                      
+                    }else{
+                      distance ++;
+                    }
+                  }
+
+                }else{
+
+                  if(((mdp1->heapinfo[block_pointed1].type == 0) && (mdp2->heapinfo[block_pointed2].type != 0)) || ((mdp1->heapinfo[block_pointed1].type != 0) && (mdp2->heapinfo[block_pointed2].type == 0))){  
+                    fprintf(stderr, "Pointers on blocks with different types \n");
+                    distance++;
+                  }else{
+
+                    frag_pointed1 = ((uintptr_t) (ADDR2UINT (address_pointed1) % (BLOCKSIZE))) >> mdp1->heapinfo[block_pointed1].type;
+                    frag_pointed2 = ((uintptr_t) (ADDR2UINT (address_pointed2) % (BLOCKSIZE))) >> mdp2->heapinfo[block_pointed2].type;
+                   
+                    fprintf(stderr, "Fragments pointed : %d - %d\n", frag_pointed1, frag_pointed2);
+                    
+                    if((frag_pointed1 < 0) || (frag_pointed1 > (BLOCKSIZE / pow( 2, mdp1->heapinfo[block_pointed1].type))) || (frag_pointed2 < 0) || (frag_pointed2 > (BLOCKSIZE / pow( 2, mdp2->heapinfo[block_pointed2].type)))){
+                       fprintf(stderr, "Unknown pointers ! \n");
+                       fflush(NULL);
+                       distance++;
+                       continue;
+                    } 
+
+                    fprintf(stderr, "Size used in fragments pointed : %d - %d\n", mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1], mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]); 
+                                        
+                    if(mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1] == mdp2->heapinfo[block_pointed2].busy_frag.frag_size[frag_pointed2]){
+
+                      addr_frag_pointed1 = (char *)addr_block_pointed1 + (frag_pointed1 * (int)pow(2, mdp1->heapinfo[block_pointed1].type));
+                      addr_frag_pointed2 = (char *)addr_block_pointed2 + (frag_pointed2 * (int)pow(2, mdp2->heapinfo[block_pointed2].type));
+                      
+                      if(memcmp(addr_frag_pointed1, addr_frag_pointed2, mdp1->heapinfo[block_pointed1].busy_frag.frag_size[frag_pointed1]) != 0){
+                        distance++;
+                      }else{
+                        fprintf(stderr, "False difference detected\n");
+                      }
+                      
+                    }else{
+                      distance ++;
+                    }
+                  }
+                  
+                }
+              }
+
+            }
+
+            if(distance > 0){
+              fprintf(stderr,"\nDifferent data in fragment %zu (size = %zu, size used = %hu) in block %zu \n", j, frag_size, mdp1->heapinfo[i].busy_frag.frag_size[j], i);
+              fprintf(stderr, "Hamming distance between fragments : %d\n", distance);
+              mmalloc_backtrace_fragment_display(mdp1, i, j);
+              mmalloc_backtrace_fragment_display(mdp2, i, j);
+              fprintf(stderr, "\n");
+              errors++;
+              total_distance += distance;
+
+            }
+
+          }
+        }
+
+        i++;
 
-	if(mdp1->heapinfo[i].busy_frag.nfree != mdp2->heapinfo[i].busy_frag.nfree){
-	  fprintf(stderr,"Different free fragments in fragmented block %zu : %zu - %zu\n", i, mdp1->heapinfo[i].busy_frag.nfree, mdp2->heapinfo[i].busy_frag.nfree);
-	  errors++;
-	} 
-	
-	if(mdp1->heapinfo[i].busy_frag.first != mdp2->heapinfo[i].busy_frag.first){
-	  fprintf(stderr,"Different busy_size of a large cluster : %zu - %zu\n", mdp1->heapinfo[i].busy_block.busy_size, mdp2->heapinfo[i].busy_block.busy_size);
-	  errors++;
-	} 
+      }else{ /* free block */
 
-	frag_size = pow(2, mdp1->heapinfo[i].type);
+        i++;
 
-	for(j=0; j< (BLOCKSIZE/frag_size); j++){
+      }
 
-	  if(mdp1->heapinfo[i].busy_frag.frag_size[j] != mdp2->heapinfo[i].busy_frag.frag_size[j]){
-	    fprintf(stderr,"Different busy_size for fragment %zu in block %zu : %hu - %hu\n", j, i, mdp1->heapinfo[i].busy_frag.frag_size[j], mdp2->heapinfo[i].busy_frag.frag_size[j]);
-	    errors++;
-	  }
+    }
 
-	  if(mdp1->heapinfo[i].busy_frag.frag_size[j] > 0){
-	    
-	    addr_frag1 = (char *)addr_block1 + (j * frag_size);
-	    addr_frag2 = (char *)addr_block2 + (j * frag_size);
+  }
 
-	    if(memcmp(addr_frag1, addr_frag2, mdp1->heapinfo[i].busy_frag.frag_size[j]) != 0){
-	      fprintf(stderr,"\nDifferent data in fragment %zu (size = %zu, size used = %hu) in block %zu \n", j, frag_size, mdp1->heapinfo[i].busy_frag.frag_size[j], i);
 
-	      /* Hamming distance on different blocks */
-	      distance = 0;
-	      for(k=0;k<mdp1->heapinfo[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, (char *)addr_frag2, j, i); 
-		  distance++;
-		}
-	      }
+  fprintf(stderr, "Hamming distance between heap regions : %d\n", total_distance);
 
-	      fprintf(stderr, "Hamming distance between fragments : %d\n", distance);
+  return (errors);
+}
 
-	      mmalloc_backtrace_fragment_display(mdp1, i, j);
-	      mmalloc_backtrace_fragment_display(mdp2, i, j);
-	      errors++;
-	    }
 
-	  }
-	}
+/* void *get_end_addr_heap(void *heap){ */
 
-	i++;
+/*   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 *\/ */
 
-      }else{ /* free block */
+/*   fp = fopen("/proc/self/maps", "r"); */
 
-	i++;
+/*   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; */
+
+
+/* } */
 
-  return (errors);
-}
 
 
 void mmalloc_display_info_heap(xbt_mheap_t h){