/* Redefine the classical malloc/free/realloc functions so that they fit well in the mmalloc framework */
#include "mmprivate.h"
+#include "gras_config.h"
+#include <math.h>
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_mm_legacy, xbt,
+ "Logging specific to mm_legacy in mmalloc");
static void *__mmalloc_current_heap = NULL; /* The heap we are currently using. */
__mmalloc_current_heap = new_heap;
}
-#if 1//def MMALLOC_WANT_OVERIDE_LEGACY
+#ifdef MMALLOC_WANT_OVERIDE_LEGACY
void *malloc(size_t n)
{
+ void *mdp = __mmalloc_current_heap;
#ifdef HAVE_MMAP
- if (!__mmalloc_current_heap)
+ if (!mdp)
mmalloc_preinit();
#endif
- LOCK(__mmalloc_current_heap);
- void *ret = mmalloc(__mmalloc_current_heap, n);
- UNLOCK(__mmalloc_current_heap);
+ LOCK(mdp);
+ void *ret = mmalloc(mdp, n);
+ UNLOCK(mdp);
return ret;
}
void *calloc(size_t nmemb, size_t size)
{
size_t total_size = nmemb * size;
+ void *mdp = __mmalloc_current_heap;
#ifdef HAVE_MMAP
- if (!__mmalloc_current_heap)
+ if (!mdp)
mmalloc_preinit();
#endif
- LOCK(__mmalloc_current_heap);
- void *ret = mmalloc(__mmalloc_current_heap, total_size);
- UNLOCK(__mmalloc_current_heap);
+ LOCK(mdp);
+ void *ret = mmalloc(mdp, total_size);
+ UNLOCK(mdp);
/* Fill the allocated memory with zeroes to mimic calloc behaviour */
memset(ret, '\0', total_size);
void *realloc(void *p, size_t s)
{
void *ret = NULL;
+ void *mdp = __mmalloc_current_heap;
#ifdef HAVE_MMAP
- if (!__mmalloc_current_heap)
+ if (!mdp)
mmalloc_preinit();
#endif
- LOCK(__mmalloc_current_heap);
+ LOCK(mdp);
if (s) {
if (p)
- ret = mrealloc(__mmalloc_current_heap, p, s);
+ ret = mrealloc(mdp, p, s);
else
- ret = mmalloc(__mmalloc_current_heap, s);
+ ret = mmalloc(mdp, s);
} else {
- if (p)
- mfree(__mmalloc_current_heap, p);
+ mfree(mdp, p);
}
- UNLOCK(__mmalloc_current_heap);
+ UNLOCK(mdp);
return ret;
}
void free(void *p)
{
- LOCK(__mmalloc_current_heap);
- mfree(__mmalloc_current_heap, p);
- UNLOCK(__mmalloc_current_heap);
+ void *mdp = __mmalloc_current_heap;
+#ifdef HAVE_GTNETS
+ if(!mdp) return;
+#endif
+ LOCK(mdp);
+ mfree(mdp, p);
+ UNLOCK(mdp);
}
#endif
/* Make sure it works with md==NULL */
-#define HEAP_OFFSET (128<<20) /* Safety gap from the heap's break address.
- * Try to increase this first if you experience
- * strange errors under valgrind. */
+/* Safety gap from the heap's break address.
+ * Try to increase this first if you experience strange errors under
+ * valgrind. */
+#define HEAP_OFFSET (128UL<<20)
void *mmalloc_get_default_md(void)
{
static void mmalloc_fork_prepare(void)
{
- if (__mmalloc_default_mdp)
- LOCK(__mmalloc_default_mdp);
+ struct mdesc* mdp = NULL;
+ if ((mdp =__mmalloc_default_mdp)){
+ while(mdp){
+ LOCK(mdp);
+ if(mdp->fd >= 0){
+ mdp->refcount++;
+ }
+ mdp = mdp->next_mdesc;
+ }
+ }
}
-static void mmalloc_fork_finish(void)
+static void mmalloc_fork_parent(void)
{
- if (__mmalloc_default_mdp)
- UNLOCK(__mmalloc_default_mdp);
+ struct mdesc* mdp = NULL;
+ if ((mdp =__mmalloc_default_mdp)){
+ while(mdp){
+ if(mdp->fd < 0)
+ UNLOCK(mdp);
+ mdp = mdp->next_mdesc;
+ }
+ }
+}
+
+static void mmalloc_fork_child(void)
+{
+ struct mdesc* mdp = NULL;
+ if ((mdp =__mmalloc_default_mdp)){
+ while(mdp){
+ UNLOCK(mdp);
+ mdp = mdp->next_mdesc;
+ }
+ }
}
/* Initialize the default malloc descriptor. */
void mmalloc_preinit(void)
{
+ int res;
if (!__mmalloc_default_mdp) {
- __mmalloc_default_mdp =
- mmalloc_attach(-1, (char *) sbrk(0) + HEAP_OFFSET);
+ unsigned long mask = ~((unsigned long)getpagesize() - 1);
+ void *addr = (void*)(((unsigned long)sbrk(0) + HEAP_OFFSET) & mask);
+ __mmalloc_default_mdp = mmalloc_attach(-1, addr);
/* Fixme? only the default mdp in protected against forks */
- if (xbt_os_thread_atfork(mmalloc_fork_prepare,
- mmalloc_fork_finish, mmalloc_fork_finish) != 0)
- abort();
+ res = xbt_os_thread_atfork(mmalloc_fork_prepare,
+ mmalloc_fork_parent, mmalloc_fork_child);
+ if (res != 0)
+ THROWF(system_error,0,"xbt_os_thread_atfork() failed: return value %d",res);
}
xbt_assert(__mmalloc_default_mdp != NULL);
}
// mmalloc_detach(__mmalloc_default_mdp);
mmalloc_pre_detach(__mmalloc_default_mdp);
}
+
+int mmalloc_compare_heap(void *h1, void *h2){
+
+ if(h1 == NULL && h2 == NULL){
+ XBT_DEBUG("Malloc descriptors null");
+ return 0;
+ }
+
+ /* Heapstats */
+
+ struct mstats ms1 = mmstats(h1);
+ struct mstats ms2 = mmstats(h2);
+
+ if(ms1.chunks_used != ms2.chunks_used){
+ XBT_DEBUG("Different chunks allocated by the user : %zu - %zu", ms1.chunks_used, ms2.chunks_used);
+ return 1;
+ }
+
+ if(ms1.bytes_used != ms2.bytes_used){
+ XBT_DEBUG("Different byte total of user-allocated chunks : %zu - %zu", ms1.bytes_used, ms2.bytes_used);
+ return 1;
+ }
+
+ if(ms1.bytes_free != ms2.bytes_free){
+ XBT_DEBUG("Different byte total of chunks in the free list : %zu - %zu", ms1.bytes_free, ms2.bytes_free);
+ return 1;
+ }
+
+ if(ms1.chunks_free != ms2.chunks_free){
+ XBT_DEBUG("Different chunks in the free list : %zu - %zu", ms1.chunks_free, ms2.chunks_free);
+ return 1;
+ }
+
+ struct mdesc *mdp1, *mdp2;
+ mdp1 = MD_TO_MDP(h1);
+ mdp2 = MD_TO_MDP(h2);
+
+ return mmalloc_compare_mdesc(mdp1, mdp2);
+
+}
+
+int mmalloc_compare_mdesc(struct mdesc *mdp1, struct mdesc *mdp2){
+
+ if(mdp1->headersize != mdp2->headersize){
+ XBT_DEBUG("Different size of the file header for the mapped files");
+ return 1;
+ }
+
+ if(mdp1->refcount != mdp2->refcount){
+ XBT_DEBUG("Different number of processes that attached the heap");
+ return 1;
+ }
+
+ if(strcmp(mdp1->magic, mdp2->magic) != 0){
+ XBT_DEBUG("Different magic number");
+ return 1;
+ }
+
+ if(mdp1->flags != mdp2->flags){
+ XBT_DEBUG("Different flags");
+ return 1;
+ }
+
+ if(mdp1->heapsize != mdp2->heapsize){
+ XBT_DEBUG("Different number of info entries");
+ return 1;
+ }
+
+ //XBT_DEBUG("Heap size : %zu", mdp1->heapsize);
+
+ if(mdp1->heapbase != mdp2->heapbase){
+ XBT_DEBUG("Different first block of the heap");
+ return 1;
+ }
+
+
+ if(mdp1->heapindex != mdp2->heapindex){
+ XBT_DEBUG("Different index for the heap table : %zu - %zu", mdp1->heapindex, mdp2->heapindex);
+ return 1;
+ }
+
+ //XBT_DEBUG("Heap index : %zu", mdp1->heapindex);
+
+ if(mdp1->base != mdp2->base){
+ XBT_DEBUG("Different base address of the memory region");
+ return 1;
+ }
+
+ if(mdp1->breakval != mdp2->breakval){
+ XBT_DEBUG("Different current location in the memory region");
+ return 1;
+ }
+
+ if(mdp1->top != mdp2->top){
+ XBT_DEBUG("Different end of the current location in the memory region");
+ return 1;
+ }
+
+ if(mdp1->heaplimit != mdp2->heaplimit){
+ XBT_DEBUG("Different limit of valid info table indices");
+ return 1;
+ }
+
+ //XBT_DEBUG("Heap limit : %zu", mdp1->heaplimit);
+
+
+ if(mdp1->fd != mdp2->fd){
+ XBT_DEBUG("Different file descriptor for the file to which this malloc heap is mapped");
+ return 1;
+ }
+
+ if(mdp1->saved_errno != mdp2->saved_errno){
+ XBT_DEBUG("Different errno");
+ return 1;
+ }
+
+ if(mdp1->version != mdp2->version){
+ XBT_DEBUG("Different version of the mmalloc package");
+ 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){
+ XBT_DEBUG("Different first free block");
+ return 1;
+ }
+
+ first_block_free = block_free1;
+
+ if(mdp1->heapinfo[first_block_free].free.size != mdp2->heapinfo[first_block_free].free.size){
+ XBT_DEBUG("Different size (in blocks) of the first free cluster");
+ 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){
+ XBT_DEBUG("Different next block free");
+ return 1;
+ }
+
+ block_free = first_block_free;
+ next_block_free = mdp1->heapinfo[first_block_free].free.next;
+
+ //XBT_DEBUG("First block free : %zu (size=%zu), Next block free : %zu", first_block_free, mdp1->heapinfo[block_free1].free.size, next_block_free);
+
+ 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){
+ XBT_DEBUG("Different type of busy block");
+ 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.size != mdp2->heapinfo[i].busy.info.size){
+ XBT_DEBUG("Different size of a large cluster");
+ return 1;
+ }else{
+ if(memcmp(addr_block1, addr_block2, (mdp1->heapinfo[i].busy.info.size * BLOCKSIZE)) != 0){
+ XBT_DEBUG("Different data in block %zu", i);
+ return 1;
+ }
+ }
+ i = i+mdp1->heapinfo[i].busy.info.size;
+ break;
+ default :
+ if(mdp1->heapinfo[i].busy.info.frag.nfree != mdp2->heapinfo[i].busy.info.frag.nfree){
+ XBT_DEBUG("Different free fragments in the fragmented block %zu", i);
+ return 1;
+ }else{
+ if(mdp1->heapinfo[i].busy.info.frag.first != mdp2->heapinfo[i].busy.info.frag.first){
+ XBT_DEBUG("Different first free fragments in the block %zu", i);
+ 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){
+ XBT_DEBUG("Different data in fragment %Zu of block %Zu", j + 1, i);
+ return 1;
+ }
+ }
+ }
+ }
+ i++;
+ break;
+ }
+
+ }
+ }
+
+ if(mdp1->heapinfo[block_free].free.next != mdp2->heapinfo[block_free].free.next){
+ XBT_DEBUG("Different next block free");
+ return 1;
+ }
+
+ block_free = mdp1->heapinfo[block_free].free.next;
+ next_block_free = mdp1->heapinfo[block_free].free.next;
+ if(i != first_block_free){
+ if(block_free != 0){
+ if(mdp1->heapinfo[block_free].free.size != mdp2->heapinfo[block_free].free.size){
+ XBT_DEBUG("Different size of block free");
+ return 1;
+ }
+ i = block_free + mdp1->heapinfo[block_free].free.size;
+ }else{
+ i = 1;
+ }
+ }
+
+ }
+
+ return 0;
+
+
+}
+
+
+
+
+
