+++ /dev/null
-/* Copyright (c) 2010-2014. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-/* Redefine the classical malloc/free/realloc functions so that they fit well in the mmalloc framework */
-
-#include "mmprivate.h"
-#include "xbt_modinter.h"
-#include "internal_config.h"
-#include <math.h>
-
-//#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
- descriptor. This allows mmalloc() to provide
- backwards compatibility with the non-mmap'd version. */
-xbt_mheap_t __mmalloc_default_mdp = NULL;
-
-
-static xbt_mheap_t __mmalloc_current_heap = NULL; /* The heap we are currently using. */
-
-xbt_mheap_t mmalloc_get_current_heap(void)
-{
- return __mmalloc_current_heap;
-}
-
-void mmalloc_set_current_heap(xbt_mheap_t new_heap)
-{
- __mmalloc_current_heap = new_heap;
-}
-
-
-#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();
-
- LOCK(mdp);
- void *ret = mmalloc(mdp, n);
- UNLOCK(mdp);
-
- return ret;
-}
-
-void *calloc(size_t nmemb, size_t size)
-{
- xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
-
- LOCK(mdp);
- void *ret = mmalloc(mdp, nmemb*size);
- UNLOCK(mdp);
- memset(ret, 0, nmemb * size);
-
-
- return ret;
-}
-
-void *realloc(void *p, size_t s)
-{
- void *ret = NULL;
- xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
-
- LOCK(mdp);
- ret = mrealloc(mdp, p, s);
- UNLOCK(mdp);
-
- return ret;
-}
-
-void free(void *p)
-{
- if (p != NULL) {
- xbt_mheap_t mdp = __mmalloc_current_heap ?: (xbt_mheap_t) mmalloc_preinit();
-
- LOCK(mdp);
- mfree(mdp, p);
- UNLOCK(mdp);
- }
-}
-#endif /* NO GNU_LD */
-#endif /* WANT_MALLOC_OVERRIDE */
-
-
