extern struct mdesc *__mmalloc_default_mdp;
-/* Initialize the first use of the default malloc descriptor, which uses
- an sbrk() region. */
-
-extern struct mdesc *__mmalloc_create_default_mdp(void);
-
/* Remap a mmalloc region that was previously mapped. */
-extern void *__mmalloc_remap_core(struct mdesc *mdp);
+extern void *__mmalloc_remap_core(xbt_mheap_t mdp);
/* Get core for the memory region specified by MDP, using SIZE as the
amount to either add to or subtract from the existing region. Works