1 /* mm_diff - Memory snapshooting and comparison */
3 /* Copyright (c) 2008-2012. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "xbt/ex_interface.h" /* internals of backtrace setup */
11 #include "xbt/mmalloc.h"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mm_diff, xbt,
14 "Logging specific to mm_diff in mmalloc");
16 xbt_dynar_t mc_heap_comparison_ignore;
17 xbt_dynar_t stacks_areas;
18 void *maestro_stack_start, *maestro_stack_end;
20 static void heap_area_pair_free(heap_area_pair_t pair);
21 static void heap_area_pair_free_voidp(void *d);
22 static int add_heap_area_pair(xbt_dynar_t list, int block1, int fragment1, int block2, int fragment2);
23 static int is_new_heap_area_pair(xbt_dynar_t list, int block1, int fragment1, int block2, int fragment2);
24 static heap_area_t new_heap_area(int block, int fragment);
26 static size_t heap_comparison_ignore_size(xbt_dynar_t list, void *address);
27 static void add_heap_equality(xbt_dynar_t equals, void *a1, void *a2);
28 static void remove_heap_equality(xbt_dynar_t equals, int address, void *a);
30 static int is_stack(void *address);
31 static int is_block_stack(int block);
32 static int equal_blocks(int b1, int b2);
34 void mmalloc_backtrace_block_display(void* heapinfo, int block){
38 /* if (((malloc_info *)heapinfo)[block].busy_block.bt_size == 0) { */
39 /* fprintf(stderr, "No backtrace available for that block, sorry.\n"); */
43 /* memcpy(&e.bt,&(((malloc_info *)heapinfo)[block].busy_block.bt),sizeof(void*)*XBT_BACKTRACE_SIZE); */
44 /* e.used = ((malloc_info *)heapinfo)[block].busy_block.bt_size; */
46 /* xbt_ex_setup_backtrace(&e); */
47 /* if (e.used == 0) { */
48 /* fprintf(stderr, "(backtrace not set)\n"); */
49 /* } else if (e.bt_strings == NULL) { */
50 /* fprintf(stderr, "(backtrace not ready to be computed. %s)\n",xbt_binary_name?"Dunno why":"xbt_binary_name not setup yet"); */
54 /* fprintf(stderr, "Backtrace of where the block %d was malloced (%d frames):\n", block ,e.used); */
55 /* for (i = 0; i < e.used; i++) /\* no need to display "xbt_backtrace_display" *\/{ */
56 /* fprintf(stderr, "%d ---> %s\n",i, e.bt_strings[i] + 4); */
61 void mmalloc_backtrace_fragment_display(void* heapinfo, int block, int frag){
65 /* memcpy(&e.bt,&(((malloc_info *)heapinfo)[block].busy_frag.bt[frag]),sizeof(void*)*XBT_BACKTRACE_SIZE); */
66 /* e.used = XBT_BACKTRACE_SIZE; */
68 /* xbt_ex_setup_backtrace(&e); */
69 /* if (e.used == 0) { */
70 /* fprintf(stderr, "(backtrace not set)\n"); */
71 /* } else if (e.bt_strings == NULL) { */
72 /* fprintf(stderr, "(backtrace not ready to be computed. %s)\n",xbt_binary_name?"Dunno why":"xbt_binary_name not setup yet"); */
76 /* fprintf(stderr, "Backtrace of where the fragment %d in block %d was malloced (%d frames):\n", frag, block ,e.used); */
77 /* for (i = 0; i < e.used; i++) /\* no need to display "xbt_backtrace_display" *\/{ */
78 /* fprintf(stderr, "%d ---> %s\n",i, e.bt_strings[i] + 4); */
84 void mmalloc_backtrace_display(void *addr){
86 /* size_t block, frag_nb; */
89 /* xbt_mheap_t heap = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit(); */
91 /* block = (((char*) (addr) - (char*) heap -> heapbase) / BLOCKSIZE + 1); */
93 /* type = heap->heapinfo[block].type; */
96 /* case -1 : /\* Free block *\/ */
97 /* fprintf(stderr, "Asked to display the backtrace of a block that is free. I'm puzzled\n"); */
100 /* case 0: /\* Large block *\/ */
101 /* mmalloc_backtrace_block_display(heap->heapinfo, block); */
103 /* default: /\* Fragmented block *\/ */
104 /* frag_nb = RESIDUAL(addr, BLOCKSIZE) >> type; */
105 /* if(heap->heapinfo[block].busy_frag.frag_size[frag_nb] == -1){ */
106 /* fprintf(stderr , "Asked to display the backtrace of a fragment that is free. I'm puzzled\n"); */
109 /* mmalloc_backtrace_fragment_display(heap->heapinfo, block, frag_nb); */
115 void *s_heap = NULL, *heapbase1 = NULL, *heapbase2 = NULL;
116 malloc_info *heapinfo1 = NULL, *heapinfo2 = NULL;
117 size_t heaplimit = 0, heapsize1 = 0, heapsize2 = 0;
118 xbt_dynar_t to_ignore1 = NULL, to_ignore2 = NULL;
120 int ignore_done1 = 0, ignore_done2 = 0;
122 void init_heap_information(xbt_mheap_t heap1, xbt_mheap_t heap2, xbt_dynar_t i1, xbt_dynar_t i2){
124 heaplimit = ((struct mdesc *)heap1)->heaplimit;
126 s_heap = (char *)mmalloc_get_current_heap() - STD_HEAP_SIZE - getpagesize();
128 heapbase1 = (char *)heap1 + BLOCKSIZE;
129 heapbase2 = (char *)heap2 + BLOCKSIZE;
131 heapinfo1 = (malloc_info *)((char *)heap1 + ((uintptr_t)((char *)heap1->heapinfo - (char *)s_heap)));
132 heapinfo2 = (malloc_info *)((char *)heap2 + ((uintptr_t)((char *)heap2->heapinfo - (char *)s_heap)));
134 heapsize1 = heap1->heapsize;
135 heapsize2 = heap2->heapsize;
141 MC_ignore_data_bss(&heaplimit, sizeof(heaplimit));
142 MC_ignore_data_bss(&s_heap, sizeof(s_heap));
143 MC_ignore_data_bss(&heapbase1, sizeof(heapbase1));
144 MC_ignore_data_bss(&heapbase2, sizeof(heapbase2));
145 MC_ignore_data_bss(&heapinfo1, sizeof(heapinfo1));
146 MC_ignore_data_bss(&heapinfo2, sizeof(heapinfo2));
147 MC_ignore_data_bss(&heapsize1, sizeof(heapsize1));
148 MC_ignore_data_bss(&heapsize2, sizeof(heapsize2));
149 MC_ignore_data_bss(&to_ignore1, sizeof(to_ignore1));
150 MC_ignore_data_bss(&to_ignore2, sizeof(to_ignore2));
155 int mmalloc_compare_heap(xbt_mheap_t heap1, xbt_mheap_t heap2){
157 if(heap1 == NULL && heap1 == NULL){
158 XBT_DEBUG("Malloc descriptors null");
162 if(heap1->heaplimit != heap2->heaplimit){
163 XBT_DEBUG("Different limit of valid info table indices");
167 /* Start comparison */
168 size_t i1, i2, j1, j2, k;
169 size_t current_block = -1; /* avoid "maybe uninitialized" warning */
170 size_t current_fragment;
171 void *addr_block1, *addr_block2, *addr_frag1, *addr_frag2;
172 int nb_diff1 = 0, nb_diff2 = 0;
174 xbt_dynar_t previous = xbt_dynar_new(sizeof(heap_area_pair_t), heap_area_pair_free_voidp);
176 int equal, res_compare = 0;
178 /* Check busy blocks*/
182 while(i1 <= heaplimit){
186 if(heapinfo1[i1].type == -1){ /* Free block */
191 addr_block1 = ((void*) (((ADDR2UINT(i1)) - 1) * BLOCKSIZE + (char*)((xbt_mheap_t)s_heap)->heapbase));
193 if(heapinfo1[i1].type == 0){ /* Large block */
195 if(is_stack(addr_block1)){
196 for(k=0; k < heapinfo1[i1].busy_block.size; k++)
197 heapinfo1[i1+k].busy_block.equal_to = new_heap_area(i1, -1);
198 for(k=0; k < heapinfo2[i1].busy_block.size; k++)
199 heapinfo2[i1+k].busy_block.equal_to = new_heap_area(i1, -1);
200 i1 = i1 + heapinfo1[current_block].busy_block.size;
204 if(heapinfo1[i1].busy_block.equal_to != NULL){
213 /* Try first to associate to same block in the other heap */
214 if(heapinfo2[current_block].type == heapinfo1[current_block].type){
216 if(heapinfo2[current_block].busy_block.equal_to == NULL){
218 addr_block2 = ((void*) (((ADDR2UINT(current_block)) - 1) * BLOCKSIZE + (char*)((xbt_mheap_t)s_heap)->heapbase));
220 res_compare = compare_area(addr_block1, addr_block2, previous);
222 if(res_compare == 0){
223 for(k=1; k < heapinfo2[current_block].busy_block.size; k++)
224 heapinfo2[current_block+k].busy_block.equal_to = new_heap_area(i1, -1);
225 for(k=1; k < heapinfo1[current_block].busy_block.size; k++)
226 heapinfo1[current_block+k].busy_block.equal_to = new_heap_area(i1, -1);
228 match_equals(previous);
229 i1 = i1 + heapinfo1[current_block].busy_block.size;
232 xbt_dynar_reset(previous);
238 while(i2 <= heaplimit && !equal){
240 addr_block2 = ((void*) (((ADDR2UINT(i2)) - 1) * BLOCKSIZE + (char*)((xbt_mheap_t)s_heap)->heapbase));
242 if(i2 == current_block){
247 if(heapinfo2[i2].type != 0){
252 if(heapinfo2[i2].busy_block.equal_to != NULL){
257 res_compare = compare_area(addr_block1, addr_block2, previous);
259 if(res_compare == 0){
260 for(k=1; k < heapinfo2[i2].busy_block.size; k++)
261 heapinfo2[i2+k].busy_block.equal_to = new_heap_area(i1, -1);
262 for(k=1; k < heapinfo1[i1].busy_block.size; k++)
263 heapinfo1[i1+k].busy_block.equal_to = new_heap_area(i2, -1);
265 match_equals(previous);
266 i1 = i1 + heapinfo1[i1].busy_block.size;
269 xbt_dynar_reset(previous);
276 XBT_DEBUG("Block %zu not found (size_used = %zu, addr = %p)", i1, heapinfo1[i1].busy_block.busy_size, addr_block1);
281 }else{ /* Fragmented block */
283 for(j1=0; j1 < (size_t) (BLOCKSIZE >> heapinfo1[i1].type); j1++){
285 current_fragment = j1;
287 if(heapinfo1[i1].busy_frag.frag_size[j1] == -1) /* Free fragment */
290 if(heapinfo1[i1].busy_frag.equal_to[j1] != NULL)
293 addr_frag1 = (void*) ((char *)addr_block1 + (j1 << heapinfo1[i1].type));
298 /* Try first to associate to same fragment in the other heap */
299 if(heapinfo2[current_block].type == heapinfo1[current_block].type){
301 if(heapinfo2[current_block].busy_frag.equal_to[current_fragment] == NULL){
303 addr_block2 = ((void*) (((ADDR2UINT(current_block)) - 1) * BLOCKSIZE + (char*)((xbt_mheap_t)s_heap)->heapbase));
304 addr_frag2 = (void*) ((char *)addr_block2 + (current_fragment << ((xbt_mheap_t)s_heap)->heapinfo[current_block].type));
306 res_compare = compare_area(addr_frag1, addr_frag2, previous);
308 if(res_compare == 0){
310 match_equals(previous);
313 xbt_dynar_reset(previous);
318 while(i2 <= heaplimit && !equal){
321 if(heapinfo2[i2].type <= 0){
326 for(j2=0; j2 < (size_t) (BLOCKSIZE >> heapinfo2[i2].type); j2++){
328 if(heapinfo2[i2].type == heapinfo1[i1].type && i2 == current_block && j2 == current_fragment)
331 if(heapinfo2[i2].busy_frag.equal_to[j2] != NULL)
334 addr_block2 = ((void*) (((ADDR2UINT(i2)) - 1) * BLOCKSIZE + (char*)((xbt_mheap_t)s_heap)->heapbase));
335 addr_frag2 = (void*) ((char *)addr_block2 + (j2 << ((xbt_mheap_t)s_heap)->heapinfo[i2].type));
337 res_compare = compare_area(addr_frag1, addr_frag2, previous);
339 if(res_compare == 0){
341 match_equals(previous);
342 xbt_dynar_reset(previous);
346 xbt_dynar_reset(previous);
354 if(heapinfo1[i1].busy_frag.equal_to[j1] == NULL){
355 XBT_DEBUG("Block %zu, fragment %zu not found (size_used = %d, address = %p)", i1, j1, heapinfo1[i1].busy_frag.frag_size[j1], addr_frag1);
370 /* All blocks/fragments are equal to another block/fragment ? */
374 if(heapinfo1[i].type == 0){
375 if(current_block == heaplimit){
376 if(heapinfo1[i].busy_block.busy_size > 0){
377 if(heapinfo1[i].busy_block.equal_to == NULL){
378 if(XBT_LOG_ISENABLED(mm_diff, xbt_log_priority_debug)){
379 addr_block1 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase1));
380 XBT_DEBUG("Block %zu (%p) not found (size used = %zu)", i, addr_block1, heapinfo1[i].busy_block.busy_size);
381 //mmalloc_backtrace_block_display((void*)heapinfo1, i);
387 xbt_free(heapinfo1[i].busy_block.equal_to);
388 heapinfo1[i].busy_block.equal_to = NULL;
390 if(heapinfo1[i].type > 0){
391 addr_block1 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase1));
392 for(j=0; j < (size_t) (BLOCKSIZE >> heapinfo1[i].type); j++){
393 if(current_block == heaplimit){
394 if(heapinfo1[i].busy_frag.frag_size[j] > 0){
395 if(heapinfo1[i].busy_frag.equal_to[j] == NULL){
396 if(XBT_LOG_ISENABLED(mm_diff, xbt_log_priority_debug)){
397 addr_frag1 = (void*) ((char *)addr_block1 + (j << heapinfo1[i].type));
398 XBT_DEBUG("Block %zu, Fragment %zu (%p) not found (size used = %d)", i, j, addr_frag1, heapinfo1[i].busy_frag.frag_size[j]);
399 //mmalloc_backtrace_fragment_display((void*)heapinfo1, i, j);
405 xbt_free(heapinfo1[i].busy_frag.equal_to[j]);
406 heapinfo1[i].busy_frag.equal_to[j] = NULL;
412 if(current_block == heaplimit)
413 XBT_DEBUG("Number of blocks/fragments not found in heap1 : %d", nb_diff1);
418 if(heapinfo2[i].type == 0){
419 if(current_block == heaplimit){
420 if(heapinfo2[i].busy_block.busy_size > 0){
421 if(heapinfo2[i].busy_block.equal_to == NULL){
422 if(XBT_LOG_ISENABLED(mm_diff, xbt_log_priority_debug)){
423 addr_block2 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase2));
424 XBT_DEBUG("Block %zu (%p) not found (size used = %zu)", i, addr_block2, heapinfo2[i].busy_block.busy_size);
425 //mmalloc_backtrace_block_display((void*)heapinfo2, i);
432 if(heapinfo2[i].type > 0){
433 addr_block2 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase2));
434 for(j=0; j < (size_t) (BLOCKSIZE >> heapinfo2[i].type); j++){
435 if(current_block == heaplimit){
436 if(heapinfo2[i].busy_frag.frag_size[j] > 0){
437 if(heapinfo2[i].busy_frag.equal_to[j] == NULL){
438 if(XBT_LOG_ISENABLED(mm_diff, xbt_log_priority_debug)){
439 addr_frag2 = (void*) ((char *)addr_block2 + (j << heapinfo2[i].type));
440 XBT_DEBUG( "Block %zu, Fragment %zu (%p) not found (size used = %d)", i, j, addr_frag2, heapinfo2[i].busy_frag.frag_size[j]);
441 //mmalloc_backtrace_fragment_display((void*)heapinfo2, i, j);
452 if(current_block == heaplimit)
453 XBT_DEBUG("Number of blocks/fragments not found in heap2 : %d", nb_diff2);
455 xbt_dynar_free(&previous);
457 return ((nb_diff1 > 0) || (nb_diff2 > 0));
460 void reset_heap_information(){
465 if(heapinfo1[i].type == 0){
466 xbt_free(heapinfo1[i].busy_block.equal_to);
467 heapinfo1[i].busy_block.equal_to = NULL;
469 if(heapinfo1[i].type > 0){
470 for(j=0; j < (size_t) (BLOCKSIZE >> heapinfo1[i].type); j++){
471 xbt_free(heapinfo1[i].busy_frag.equal_to[j]);
472 heapinfo1[i].busy_frag.equal_to[j] = NULL;
481 if(heapinfo2[i].type == 0){
482 xbt_free(heapinfo2[i].busy_block.equal_to);
483 heapinfo2[i].busy_block.equal_to = NULL;
485 if(heapinfo2[i].type > 0){
486 for(j=0; j < (size_t) (BLOCKSIZE >> heapinfo2[i].type); j++){
487 xbt_free(heapinfo2[i].busy_frag.equal_to[j]);
488 heapinfo2[i].busy_frag.equal_to[j] = NULL;
494 ignore_done1 = 0, ignore_done2 = 0;
495 s_heap = NULL, heapbase1 = NULL, heapbase2 = NULL;
496 heapinfo1 = NULL, heapinfo2 = NULL;
497 heaplimit = 0, heapsize1 = 0, heapsize2 = 0;
498 to_ignore1 = NULL, to_ignore2 = NULL;
502 static heap_area_t new_heap_area(int block, int fragment){
503 heap_area_t area = NULL;
504 area = xbt_new0(s_heap_area_t, 1);
506 area->fragment = fragment;
511 static size_t heap_comparison_ignore_size(xbt_dynar_t ignore_list, void *address){
513 unsigned int cursor = 0;
515 int end = xbt_dynar_length(ignore_list) - 1;
516 mc_heap_ignore_region_t region;
519 cursor = (start + end) / 2;
520 region = (mc_heap_ignore_region_t)xbt_dynar_get_as(ignore_list, cursor, mc_heap_ignore_region_t);
521 if(region->address == address)
523 if(region->address < address)
525 if(region->address > address)
533 int compare_area(void *area1, void* area2, xbt_dynar_t previous){
535 size_t i = 0, pointer_align = 0, ignore1 = 0, ignore2 = 0;
536 void *addr_pointed1, *addr_pointed2;
538 size_t block1, frag1, block2, frag2, size;
539 int check_ignore = 0;
541 void *addr_block1, *addr_block2, *addr_frag1, *addr_frag2;
542 void *area1_to_compare, *area2_to_compare;
546 if(previous == NULL){
547 previous = xbt_dynar_new(sizeof(heap_area_pair_t), heap_area_pair_free_voidp);
551 block1 = ((char*)area1 - (char*)((xbt_mheap_t)s_heap)->heapbase) / BLOCKSIZE + 1;
552 block2 = ((char*)area2 - (char*)((xbt_mheap_t)s_heap)->heapbase) / BLOCKSIZE + 1;
554 if(is_block_stack((int)block1) && is_block_stack((int)block2))
557 if(((char *)area1 < (char*)((xbt_mheap_t)s_heap)->heapbase) || (block1 > heapsize1) || (block1 < 1) || ((char *)area2 < (char*)((xbt_mheap_t)s_heap)->heapbase) || (block2 > heapsize2) || (block2 < 1))
560 addr_block1 = ((void*) (((ADDR2UINT(block1)) - 1) * BLOCKSIZE + (char*)heapbase1));
561 addr_block2 = ((void*) (((ADDR2UINT(block2)) - 1) * BLOCKSIZE + (char*)heapbase2));
563 if(heapinfo1[block1].type == heapinfo2[block2].type){
565 if(heapinfo1[block1].type == -1){
567 }else if(heapinfo1[block1].type == 0){
568 if(heapinfo1[block1].busy_block.equal_to != NULL){
569 if(equal_blocks(block1, block2)){
573 if(heapinfo1[block1].busy_block.size != heapinfo2[block2].busy_block.size)
575 if(heapinfo1[block1].busy_block.busy_size != heapinfo2[block2].busy_block.busy_size)
577 if(!add_heap_area_pair(previous, block1, -1, block2, -1))
580 size = heapinfo1[block1].busy_block.busy_size;
584 area1_to_compare = addr_block1;
585 area2_to_compare = addr_block2;
587 if(heapinfo1[block1].busy_block.ignore == 1 || heapinfo2[block2].busy_block.ignore == 1)
590 frag1 = ((uintptr_t) (ADDR2UINT (area1) % (BLOCKSIZE))) >> heapinfo1[block1].type;
591 frag2 = ((uintptr_t) (ADDR2UINT (area2) % (BLOCKSIZE))) >> heapinfo2[block2].type;
593 if(heapinfo1[block1].busy_frag.frag_size[frag1] != heapinfo2[block2].busy_frag.frag_size[frag2])
595 if(!add_heap_area_pair(previous, block1, frag1, block2, frag2))
598 addr_frag1 = (void*) ((char *)addr_block1 + (frag1 << heapinfo1[block1].type));
599 addr_frag2 = (void*) ((char *)addr_block2 + (frag2 << heapinfo2[block2].type));
601 area1_to_compare = addr_frag1;
602 area2_to_compare = addr_frag2;
604 size = heapinfo1[block1].busy_frag.frag_size[frag1];
609 if(heapinfo1[block1].busy_frag.ignore[frag1] == 1 || heapinfo2[block2].busy_frag.ignore[frag2] == 1)
612 }else if((heapinfo1[block1].type > 0) && (heapinfo2[block2].type > 0)){
613 frag1 = ((uintptr_t) (ADDR2UINT (area1) % (BLOCKSIZE))) >> heapinfo1[block1].type;
614 frag2 = ((uintptr_t) (ADDR2UINT (area2) % (BLOCKSIZE))) >> heapinfo2[block2].type;
616 if(heapinfo1[block1].busy_frag.frag_size[frag1] != heapinfo2[block2].busy_frag.frag_size[frag2])
618 if(!add_heap_area_pair(previous, block1, frag1, block2, frag2))
621 addr_frag1 = (void*) ((char *)addr_block1 + (frag1 << heapinfo1[block1].type));
622 addr_frag2 = (void*) ((char *)addr_block2 + (frag2 << heapinfo2[block2].type));
624 area1_to_compare = addr_frag1;
625 area2_to_compare = addr_frag2;
627 size = heapinfo1[block1].busy_frag.frag_size[frag1];
632 if(heapinfo1[block1].busy_frag.ignore[frag1] == 1 || heapinfo2[block2].busy_frag.ignore[frag2] == 1)
641 if((ignore_done1 < xbt_dynar_length(to_ignore1)) && ((ignore1 = heap_comparison_ignore_size(to_ignore1, (char *)area1 + i)) > 0)){
642 if((ignore_done2 < xbt_dynar_length(to_ignore2)) && ((ignore2 = heap_comparison_ignore_size(to_ignore2, (char *)area2 + i)) == ignore1)){
651 if(memcmp(((char *)area1_to_compare) + i, ((char *)area2_to_compare) + i, 1) != 0){
653 /* Check pointer difference */
654 pointer_align = (i / sizeof(void*)) * sizeof(void*);
655 addr_pointed1 = *((void **)((char *)area1_to_compare + pointer_align));
656 addr_pointed2 = *((void **)((char *)area2_to_compare + pointer_align));
658 if(addr_pointed1 > maestro_stack_start && addr_pointed1 < maestro_stack_end && addr_pointed2 > maestro_stack_start && addr_pointed2 < maestro_stack_end){
659 i = pointer_align + sizeof(void *);
663 res_compare = compare_area(addr_pointed1, addr_pointed2, previous);
668 i = pointer_align + sizeof(void *);
678 match_equals(previous);
685 static void heap_area_pair_free(heap_area_pair_t pair){
692 static void heap_area_pair_free_voidp(void *d)
694 heap_area_pair_free((heap_area_pair_t) * (void **) d);
697 static int add_heap_area_pair(xbt_dynar_t list, int block1, int fragment1, int block2, int fragment2){
699 if(is_new_heap_area_pair(list, block1, fragment1, block2, fragment2)){
700 heap_area_pair_t pair = NULL;
701 pair = xbt_new0(s_heap_area_pair_t, 1);
702 pair->block1 = block1;
703 pair->fragment1 = fragment1;
704 pair->block2 = block2;
705 pair->fragment2 = fragment2;
707 xbt_dynar_push(list, &pair);
715 static int is_new_heap_area_pair(xbt_dynar_t list, int block1, int fragment1, int block2, int fragment2){
717 unsigned int cursor = 0;
718 heap_area_pair_t current_pair;
720 xbt_dynar_foreach(list, cursor, current_pair){
721 if(current_pair->block1 == block1 && current_pair->block2 == block2 && current_pair->fragment1 == fragment1 && current_pair->fragment2 == fragment2)
728 void match_equals(xbt_dynar_t list){
730 unsigned int cursor = 0;
731 heap_area_pair_t current_pair;
732 heap_area_t previous_area;
734 xbt_dynar_foreach(list, cursor, current_pair){
736 if(current_pair->fragment1 != -1){
738 if(heapinfo1[current_pair->block1].busy_frag.equal_to[current_pair->fragment1] != NULL){
739 previous_area = heapinfo1[current_pair->block1].busy_frag.equal_to[current_pair->fragment1];
740 xbt_free(heapinfo2[previous_area->block].busy_frag.equal_to[previous_area->fragment]);
741 heapinfo2[previous_area->block].busy_frag.equal_to[previous_area->fragment] = NULL;
742 xbt_free(previous_area);
744 if(heapinfo2[current_pair->block2].busy_frag.equal_to[current_pair->fragment2] != NULL){
745 previous_area = heapinfo2[current_pair->block2].busy_frag.equal_to[current_pair->fragment2];
746 xbt_free(heapinfo1[previous_area->block].busy_frag.equal_to[previous_area->fragment]);
747 heapinfo1[previous_area->block].busy_frag.equal_to[previous_area->fragment] = NULL;
748 xbt_free(previous_area);
751 heapinfo1[current_pair->block1].busy_frag.equal_to[current_pair->fragment1] = new_heap_area(current_pair->block2, current_pair->fragment2);
752 heapinfo2[current_pair->block2].busy_frag.equal_to[current_pair->fragment2] = new_heap_area(current_pair->block1, current_pair->fragment1);
756 if(heapinfo1[current_pair->block1].busy_block.equal_to != NULL){
757 previous_area = heapinfo1[current_pair->block1].busy_block.equal_to;
758 xbt_free(heapinfo2[previous_area->block].busy_block.equal_to);
759 heapinfo2[previous_area->block].busy_block.equal_to = NULL;
760 xbt_free(previous_area);
762 if(heapinfo2[current_pair->block2].busy_block.equal_to != NULL){
763 previous_area = heapinfo2[current_pair->block2].busy_block.equal_to;
764 xbt_free(heapinfo1[previous_area->block].busy_block.equal_to);
765 heapinfo1[previous_area->block].busy_block.equal_to = NULL;
766 xbt_free(previous_area);
769 heapinfo1[current_pair->block1].busy_block.equal_to = new_heap_area(current_pair->block2, current_pair->fragment2);
770 heapinfo2[current_pair->block2].busy_block.equal_to = new_heap_area(current_pair->block1, current_pair->fragment1);
779 #define max( a, b ) ( ((a) > (b)) ? (a) : (b) )
782 int mmalloc_linear_compare_heap(xbt_mheap_t heap1, xbt_mheap_t heap2){
784 if(heap1 == NULL && heap1 == NULL){
785 XBT_DEBUG("Malloc descriptors null");
789 if(heap1->heaplimit != heap2->heaplimit){
790 XBT_DEBUG("Different limit of valid info table indices");
794 /* Heap information */
795 heaplimit = ((struct mdesc *)heap1)->heaplimit;
797 s_heap = (char *)mmalloc_get_current_heap() - STD_HEAP_SIZE - getpagesize();
799 heapbase1 = (char *)heap1 + BLOCKSIZE;
800 heapbase2 = (char *)heap2 + BLOCKSIZE;
802 heapinfo1 = (malloc_info *)((char *)heap1 + ((uintptr_t)((char *)heap1->heapinfo - (char *)s_heap)));
803 heapinfo2 = (malloc_info *)((char *)heap2 + ((uintptr_t)((char *)heap2->heapinfo - (char *)s_heap)));
805 heapsize1 = heap1->heapsize;
806 heapsize2 = heap2->heapsize;
808 /* Start comparison */
810 void *addr_block1, *addr_block2, *addr_frag1, *addr_frag2;
814 /* Check busy blocks*/
818 while(i <= heaplimit){
820 addr_block1 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase1));
821 addr_block2 = ((void*) (((ADDR2UINT(i)) - 1) * BLOCKSIZE + (char*)heapbase2));
823 if(heapinfo1[i].type != heapinfo2[i].type){
825 distance += BLOCKSIZE;
826 XBT_DEBUG("Different type of blocks (%zu) : %d - %d -> distance = %d", i, heapinfo1[i].type, heapinfo2[i].type, distance);
831 if(heapinfo1[i].type == -1){ /* Free block */
836 if(heapinfo1[i].type == 0){ /* Large block */
838 if(heapinfo1[i].busy_block.size != heapinfo2[i].busy_block.size){
839 distance += BLOCKSIZE * max(heapinfo1[i].busy_block.size, heapinfo2[i].busy_block.size);
840 i += max(heapinfo1[i].busy_block.size, heapinfo2[i].busy_block.size);
841 XBT_DEBUG("Different larger of cluster at block %zu : %zu - %zu -> distance = %d", i, heapinfo1[i].busy_block.size, heapinfo2[i].busy_block.size, distance);
845 /*if(heapinfo1[i].busy_block.busy_size != heapinfo2[i].busy_block.busy_size){
846 distance += max(heapinfo1[i].busy_block.busy_size, heapinfo2[i].busy_block.busy_size);
847 i += max(heapinfo1[i].busy_block.size, heapinfo2[i].busy_block.size);
848 XBT_DEBUG("Different size used oin large cluster at block %zu : %zu - %zu -> distance = %d", i, heapinfo1[i].busy_block.busy_size, heapinfo2[i].busy_block.busy_size, distance);
854 //while(k < (heapinfo1[i].busy_block.busy_size)){
855 while(k < heapinfo1[i].busy_block.size * BLOCKSIZE){
856 if(memcmp((char *)addr_block1 + k, (char *)addr_block2 + k, 1) != 0){
864 }else { /* Fragmented block */
866 for(j=0; j < (size_t) (BLOCKSIZE >> heapinfo1[i].type); j++){
868 addr_frag1 = (void*) ((char *)addr_block1 + (j << heapinfo1[i].type));
869 addr_frag2 = (void*) ((char *)addr_block2 + (j << heapinfo2[i].type));
871 if(heapinfo1[i].busy_frag.frag_size[j] == 0 && heapinfo2[i].busy_frag.frag_size[j] == 0){
876 /*if(heapinfo1[i].busy_frag.frag_size[j] != heapinfo2[i].busy_frag.frag_size[j]){
877 distance += max(heapinfo1[i].busy_frag.frag_size[j], heapinfo2[i].busy_frag.frag_size[j]);
878 XBT_DEBUG("Different size used in fragment %zu in block %zu : %d - %d -> distance = %d", j, i, heapinfo1[i].busy_frag.frag_size[j], heapinfo2[i].busy_frag.frag_size[j], distance);
884 //while(k < max(heapinfo1[i].busy_frag.frag_size[j], heapinfo2[i].busy_frag.frag_size[j])){
885 while(k < (BLOCKSIZE / (BLOCKSIZE >> heapinfo1[i].type))){
886 if(memcmp((char *)addr_frag1 + k, (char *)addr_frag2 + k, 1) != 0){
906 static int is_stack(void *address){
907 unsigned int cursor = 0;
908 stack_region_t stack;
910 xbt_dynar_foreach(stacks_areas, cursor, stack){
911 if(address == stack->address)
918 static int is_block_stack(int block){
919 unsigned int cursor = 0;
920 stack_region_t stack;
922 xbt_dynar_foreach(stacks_areas, cursor, stack){
923 if(block == stack->block)
930 static void add_heap_equality(xbt_dynar_t equals, void *a1, void *a2){
932 if(xbt_dynar_is_empty(equals)){
934 heap_equality_t he = xbt_new0(s_heap_equality_t, 1);
938 xbt_dynar_insert_at(equals, 0, &he);
942 unsigned int cursor = 0;
944 int end = xbt_dynar_length(equals) - 1;
945 heap_equality_t current_equality = NULL;
948 cursor = (start + end) / 2;
949 current_equality = (heap_equality_t)xbt_dynar_get_as(equals, cursor, heap_equality_t);
950 if(current_equality->address1 == a1){
951 if(current_equality->address2 == a2)
953 if(current_equality->address2 < a2)
955 if(current_equality->address2 > a2)
958 if(current_equality->address1 < a1)
960 if(current_equality->address1 > a1)
964 heap_equality_t he = xbt_new0(s_heap_equality_t, 1);
968 if(current_equality->address1 < a1)
969 xbt_dynar_insert_at(equals, cursor + 1 , &he);
971 xbt_dynar_insert_at(equals, cursor, &he);
977 static void remove_heap_equality(xbt_dynar_t equals, int address, void *a){
979 unsigned int cursor = 0;
980 heap_equality_t current_equality;
986 int end = xbt_dynar_length(equals) - 1;
989 while(start <= end && found == 0){
990 cursor = (start + end) / 2;
991 current_equality = (heap_equality_t)xbt_dynar_get_as(equals, cursor, heap_equality_t);
992 if(current_equality->address1 == a)
994 if(current_equality->address1 < a)
996 if(current_equality->address1 > a)
1001 xbt_dynar_remove_at(equals, cursor, NULL);
1005 xbt_dynar_foreach(equals, cursor, current_equality){
1006 if(current_equality->address2 == a){
1013 xbt_dynar_remove_at(equals, cursor, NULL);
1019 int is_free_area(void *area, xbt_mheap_t heap){
1021 void *sheap = (char *)mmalloc_get_current_heap() - STD_HEAP_SIZE - getpagesize();
1022 malloc_info *heapinfo = (malloc_info *)((char *)heap + ((uintptr_t)((char *)heap->heapinfo - (char *)sheap)));
1023 size_t heapsize = heap->heapsize;
1025 /* Get block number */
1026 size_t block = ((char*)area - (char*)((xbt_mheap_t)sheap)->heapbase) / BLOCKSIZE + 1;
1029 /* Check if valid block number */
1030 if((char *)area < (char*)((xbt_mheap_t)sheap)->heapbase || block > heapsize || block < 1)
1033 if(heapinfo[block].type < 0)
1036 if(heapinfo[block].type == 0)
1039 if(heapinfo[block].type > 0){
1040 fragment = ((uintptr_t) (ADDR2UINT(area) % (BLOCKSIZE))) >> heapinfo[block].type;
1041 if(heapinfo[block].busy_frag.frag_size[fragment] == 0)
1049 static int equal_blocks(b1, b2){
1050 if(heapinfo1[b1].busy_block.equal_to != NULL){
1051 if(heapinfo2[b2].busy_block.equal_to != NULL){
1052 if(((heap_area_t)(heapinfo1[b1].busy_block.equal_to))->block == b2 && ((heap_area_t)(heapinfo2[b2].busy_block.equal_to))->block == b1)