-/* Copyright (c) 2010. The SimGrid Team.
+/* Copyright (c) 2010-2013. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
/* Redefine the classical malloc/free/realloc functions so that they fit well in the mmalloc framework */
#include "mmprivate.h"
-#include "gras_config.h"
+#include "internal_config.h"
#include <math.h>
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_mm_legacy, xbt,
- "Logging specific to mm_legacy in mmalloc");
+//#define MM_LEGACY_VERBOSE 1 /* define this to see which version of malloc gets used */
/* The mmalloc() package can use a single implicit malloc descriptor
for mmalloc/mrealloc/mfree operations which do not supply an explicit
__mmalloc_current_heap = new_heap;
}
-#ifdef MMALLOC_WANT_OVERIDE_LEGACY
+
+#ifdef MMALLOC_WANT_OVERRIDE_LEGACY
+#ifdef HAVE_GNU_LD
+
+#undef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#include <dlfcn.h>
+
+static void * (*real_malloc) (size_t);
+static void * (*real_realloc) (void*,size_t);
+static void * (*real_free) (void*);
+
+static void mm_gnuld_legacy_init(void) { /* This function is called from mmalloc_preinit(); it works even if it's static because all mm is in mm.c */
+ real_malloc = (void * (*) (size_t)) dlsym(RTLD_NEXT, "malloc");
+ real_realloc = (void * (*) (void*,size_t)) dlsym(RTLD_NEXT, "realloc");
+ real_free = (void * (*) (void*)) dlsym(RTLD_NEXT, "free");
+ __mmalloc_current_heap = __mmalloc_default_mdp;
+}
+
+/* Hello pimple!
+ * DL needs some memory while resolving the malloc symbol, that is somehow problematic
+ * To that extend, we have a little area here living in .BSS that we return if asked for memory before the malloc is resolved.
+ */
+int allocated_junk=0; /* keep track of whether our little area was already given to someone */
+char junkarea[4096];
+
+/* This version use mmalloc if there is a current heap, or the legacy implem if not */
+void *malloc(size_t n) {
+ xbt_mheap_t mdp = __mmalloc_current_heap;
+ void *ret;
+#ifdef MM_LEGACY_VERBOSE
+ static int warned_raw = 0;
+ static int warned_mmalloc = 0;
+#endif
+
+ if (mdp) {
+ LOCK(mdp);
+ ret = mmalloc(mdp, n);
+ UNLOCK(mdp);
+#ifdef MM_LEGACY_VERBOSE
+ if (!warned_mmalloc) {
+ fprintf(stderr,"Using mmalloc; enabling the model-checker in cmake may have a bad impact on your simulation performance\n");
+ warned_mmalloc = 1;
+ }
+#endif
+ } else {
+ if (!real_malloc) {
+ if (allocated_junk) {
+ fprintf(stderr,
+ "Panic: real malloc symbol not resolved yet, and I already gave my little private memory chunk away. "
+ "Damn LD, we must extend our code to have several such areas.\n");
+ exit(1);
+ } else if (n > sizeof junkarea) {
+ fprintf(stderr,
+ "Panic: real malloc symbol not resolved yet, and I need %zu bytes while my little private memory chunk is only %zu bytes wide. "
+ "Damn LD, we must fix our code to extend this area.\n", n, sizeof junkarea);
+ exit(1);
+ } else {
+ allocated_junk = 1;
+ return junkarea;
+ }
+ }
+#ifdef MM_LEGACY_VERBOSE
+ if (!warned_raw) {
+ fprintf(stderr,"Using system malloc after interception; you seem to be currently model-checking\n");
+ warned_raw = 1;
+ }
+#endif
+ ret = real_malloc(n);
+ }
+ return ret;
+}
+
+
+void *calloc(size_t nmemb, size_t size)
+{
+ void *ret = malloc(nmemb*size);
+ memset(ret, 0, nmemb * size);
+ return ret;
+}
+
+void *realloc(void *p, size_t s)
+{
+ xbt_mheap_t mdp = __mmalloc_current_heap;
+ void *ret;
+
+ if (mdp) {
+ LOCK(mdp);
+ ret = mrealloc(mdp, p, s);
+ UNLOCK(mdp);
+ } else {
+ ret = real_realloc(p,s);
+ }
+
+ return ret;
+}
+
+void free(void *p)
+{
+ if (p==NULL)
+ return;
+ if (p!=junkarea) {
+ xbt_mheap_t mdp = __mmalloc_current_heap;
+
+ if (mdp) {
+ LOCK(mdp);
+ mfree(mdp, p);
+ UNLOCK(mdp);
+ } else {
+ real_free(p);
+ }
+ } else {
+ allocated_junk=0;
+ }
+}
+
+
+#else /* NO GNU_LD */
void *malloc(size_t n)
{
xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
LOCK(mdp);
- void *ret = mcalloc(mdp, nmemb,size);
+ void *ret = mmalloc(mdp, nmemb*size);
UNLOCK(mdp);
+ memset(ret, 0, nmemb * size);
+
return ret;
}
void free(void *p)
{
- xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
-
- LOCK(mdp);
- mfree(mdp, p);
- UNLOCK(mdp);
-}
-#endif
-
-
-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);
-
- return (errors > 0);
-
-}
-
-int mmalloc_compare_mdesc(struct mdesc *mdp1, struct mdesc *mdp2, void *std_heap_addr){
-
- int errors = 0;
-
- 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;
- }
- }
-
- 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;
- }
- }
-
- 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;
- }
- }
-
- if(mdp1->flags != mdp2->flags){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different flags");
- errors++;
- }else{
- return 1;
- }
- }
-
- 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;
- }
- }
-
- //XBT_DEBUG("Heap size : %zu", mdp1->heapsize);
-
- 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;
- }
- }
-
-
- 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;
- }
- }
-
- //XBT_DEBUG("Heap index : %zu", mdp1->heapindex);
-
- 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->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;
- }
- }
-
- 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;
- }
- }
-
- 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;
- }
- }
-
- 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;
- }
- }
+ if (p != NULL) {
+ xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
- 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;
- }
- }
-
-
- size_t block_free1, block_free2 , next_block_free, first_block_free, block_free ;
- size_t i, j;
- void *addr_block1, *addr_block2;
- size_t frag_size;
-
-
- /* Search index of the first free block */
-
- block_free1 = mdp1->heapindex;
- block_free2 = mdp2->heapindex;
-
- while(mdp1->heapinfo[block_free1].free.prev != 0){
- block_free1 = mdp1->heapinfo[block_free1].free.prev;
- }
-
- while(mdp2->heapinfo[block_free2].free.prev != 0){
- block_free2 = mdp1->heapinfo[block_free2].free.prev;
- }
-
- 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;
-
- if(mdp1->heapinfo[first_block_free].free.size != mdp2->heapinfo[first_block_free].free.size){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different size (in blocks) of the first free cluster");
- errors++;
- }else{
- return 1;
- }
- }
-
- /* Check busy blocks (circular checking)*/
-
- i = first_block_free + mdp1->heapinfo[first_block_free].free.size;
-
- if(mdp1->heapinfo[first_block_free].free.next != mdp2->heapinfo[first_block_free].free.next){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different next block free");
- errors++;
- }else{
- return 1;
- }
- }
-
- block_free = first_block_free;
- next_block_free = mdp1->heapinfo[first_block_free].free.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].busy.type != mdp2->heapinfo[i].busy.type){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different type of busy block");
- errors++;
- }else{
- return 1;
- }
- }else{
-
- addr_block1 = (char *)mdp1 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
- addr_block2 = (char *)mdp2 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
-
- switch(mdp1->heapinfo[i].busy.type){
- case 0 :
- if(mdp1->heapinfo[i].busy.info.block.size != mdp2->heapinfo[i].busy.info.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.info.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.info.block.size, addr_block1, (char *)std_heap_addr + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE), addr_block2);
- errors++;
- }else{
- return 1;
- }
- }
- }
- i = i+mdp1->heapinfo[i].busy.info.block.size;
-
- break;
- default :
- if(mdp1->heapinfo[i].busy.info.frag.nfree != mdp2->heapinfo[i].busy.info.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.info.frag.first != mdp2->heapinfo[i].busy.info.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;
- }
- }else{
- frag_size = pow(2,mdp1->heapinfo[i].busy.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;
- }
- }
- }
- }
- }
-
- i++;
-
- break;
- }
-
- }
- }
-
- if( i != first_block_free){
-
- if(mdp1->heapinfo[block_free].free.next != mdp2->heapinfo[block_free].free.next){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different next block free");
- errors++;
- }else{
- return 1;
- }
- }
-
- block_free = mdp1->heapinfo[block_free].free.next;
- next_block_free = mdp1->heapinfo[block_free].free.next;
-
- i = block_free + mdp1->heapinfo[block_free].free.size;
-
- if((next_block_free == 0) && (i != mdp1->heaplimit)){
-
- while(i < mdp1->heaplimit){
-
- if(mdp1->heapinfo[i].busy.type != mdp2->heapinfo[i].busy.type){
- if(XBT_LOG_ISENABLED(xbt_mm_legacy, xbt_log_priority_debug)){
- XBT_DEBUG("Different type of busy block");
- errors++;
- }else{
- return 1;
- }
- }else{
-
- addr_block1 = (char *)mdp1 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
- addr_block2 = (char *)mdp2 + sizeof(struct mdesc) + ((i-1) * BLOCKSIZE);
-
- switch(mdp1->heapinfo[i].busy.type){
- case 0 :
- if(mdp1->heapinfo[i].busy.info.block.size != mdp2->heapinfo[i].busy.info.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.info.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;
- }
- }
- }
-
- i = i+mdp1->heapinfo[i].busy.info.block.size;
-
- break;
- default :
- if(mdp1->heapinfo[i].busy.info.frag.nfree != mdp2->heapinfo[i].busy.info.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.info.frag.first != mdp2->heapinfo[i].busy.info.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;
- }
- }else{
- frag_size = pow(2,mdp1->heapinfo[i].busy.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;
- }
- }
- }
- }
- }
-
- i++;
-
- break;
- }
- }
- }
-
- }
-
- }
+ LOCK(mdp);
+ mfree(mdp, p);
+ UNLOCK(mdp);
}
-
- return (errors>0);
}
+#endif /* NO GNU_LD */
+#endif /* WANT_MALLOC_OVERRIDE */
-
-void mmalloc_display_info_heap(xbt_mheap_t h){
-}
