+++ /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 */
-#define _GNU_SOURCE
-
-#include <stdlib.h>
-
-#include <dlfcn.h>
-
-#include "../../mc/mc_base.h"
-#include "mmprivate.h"
-#include "xbt_modinter.h"
-#include "internal_config.h"
-#include <math.h>
-#include "../mc/mc_protocol.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 int __malloc_use_mmalloc;
-
-int malloc_use_mmalloc(void)
-{
- return __malloc_use_mmalloc;
-}
-
-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;
-}
-
-xbt_mheap_t mmalloc_set_current_heap(xbt_mheap_t new_heap)
-{
- xbt_mheap_t heap = __mmalloc_current_heap;
- __mmalloc_current_heap = new_heap;
- return heap;
-}
-
-#ifdef MMALLOC_WANT_OVERRIDE_LEGACY
-
-/* Fake implementations, they are used to fool dlsym:
- * dlsym used calloc and falls back to some other mechanism
- * if this fails.
- */
-static void* mm_fake_calloc(size_t nmemb, size_t size) { return NULL; }
-static void* mm_fake_malloc(size_t n) { return NULL; }
-static void* mm_fake_realloc(void *p, size_t s) { return NULL; }
-
-/* Function signatures for the main malloc functions: */
-typedef void* (*mm_malloc_t)(size_t size);
-typedef void (*mm_free_t)(void*);
-typedef void* (*mm_calloc_t)(size_t nmemb, size_t size);
-typedef void* (*mm_realloc_t)(void *ptr, size_t size);
-
-/* Function pointers to the real/next implementations: */
-static mm_malloc_t mm_real_malloc = mm_fake_malloc;
-static mm_free_t mm_real_free;
-static mm_calloc_t mm_real_calloc = mm_fake_calloc;
-static mm_realloc_t mm_real_realloc = mm_fake_realloc;
-
-#define GET_HEAP() __mmalloc_current_heap
-
-/** Constructor functions used to initialize the malloc implementation
- */
-static void __attribute__((constructor(101))) mm_legacy_constructor()
-{
- __malloc_use_mmalloc = getenv(MC_ENV_VARIABLE) ? 1 : 0;
- if (__malloc_use_mmalloc) {
- __mmalloc_current_heap = mmalloc_preinit();
- } else {
- mm_real_realloc = (mm_realloc_t) dlsym(RTLD_NEXT, "realloc");
- mm_real_malloc = (mm_malloc_t) dlsym(RTLD_NEXT, "malloc");
- mm_real_free = (mm_free_t) dlsym(RTLD_NEXT, "free");
- mm_real_calloc = (mm_calloc_t) dlsym(RTLD_NEXT, "calloc");
- }
-}
-
-void* malloc_no_memset(size_t n)
-{
- if (!__malloc_use_mmalloc) {
- return mm_real_malloc(n);
- }
-
- xbt_mheap_t mdp = GET_HEAP();
- if (!mdp)
- return NULL;
-
- LOCK(mdp);
- void *ret = mmalloc_no_memset(mdp, n);
- UNLOCK(mdp);
- return ret;
-}
-
-void *malloc(size_t n)
-{
- if (!__malloc_use_mmalloc) {
- return mm_real_malloc(n);
- }
-
- xbt_mheap_t mdp = GET_HEAP();
- if (!mdp)
- return NULL;
-
- LOCK(mdp);
- void *ret = mmalloc(mdp, n);
- UNLOCK(mdp);
- return ret;
-}
-
-void *calloc(size_t nmemb, size_t size)
-{
- if (!__malloc_use_mmalloc) {
- return mm_real_calloc(nmemb, size);
- }
-
- xbt_mheap_t mdp = GET_HEAP();
- if (!mdp)
- return NULL;
-
- LOCK(mdp);
- void *ret = mmalloc(mdp, nmemb*size);
- UNLOCK(mdp);
- // This was already done in the callee:
- if(!(mdp->options & XBT_MHEAP_OPTION_MEMSET)) {
- memset(ret, 0, nmemb * size);
- }
- return ret;
-}
-
-void *realloc(void *p, size_t s)
-{
- if (!__malloc_use_mmalloc) {
- return mm_real_realloc(p, s);
- }
-
- xbt_mheap_t mdp = GET_HEAP();
- if (!mdp)
- return NULL;
-
- LOCK(mdp);
- void* ret = mrealloc(mdp, p, s);
- UNLOCK(mdp);
- return ret;
-}
-
-void free(void *p)
-{
- if (!__malloc_use_mmalloc) {
- mm_real_free(p);
- return;
- }
-
- if (!p)
- return;
-
- xbt_mheap_t mdp = GET_HEAP();
- LOCK(mdp);
- mfree(mdp, p);
- UNLOCK(mdp);
-}
-#endif /* WANT_MALLOC_OVERRIDE */
