+++ /dev/null
-/* Finish access to a mmap'd malloc managed region.
- Copyright 1992 Free Software Foundation, Inc.
-
- Contributed by Fred Fish at Cygnus Support. fnf@cygnus.com
- This file was then part of the GNU C Library. */
-
-/* Copyright (c) 2010. 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. */
-
-#include <unistd.h> /* close */
-#include <sys/types.h>
-#include "mmprivate.h"
-
-/* Terminate access to a mmalloc managed region, but do not free its content.
- * This is for example useful for the base region where ldl stores its data
- * because it leaves the place after us.
- */
-void mmalloc_detach_no_free(xbt_mheap_t md)
-{
- struct mdesc *mdp = md;
-
- if(--mdp->refcount == 0){
- LOCK(mdp) ;
- sem_destroy(&mdp->sem);
- }
-}
-
-/* Terminate access to a mmalloc managed region by unmapping all memory pages
- associated with the region, and closing the file descriptor if it is one
- that we opened.
-
- Returns NULL on success.
-
- Returns the malloc descriptor on failure, which can subsequently be used
- for further action, such as obtaining more information about the nature of
- the failure by examining the preserved errno value.
-
- Note that the malloc descriptor that we are using is currently located in
- region we are about to unmap, so we first make a local copy of it on the
- stack and use the copy. */
-
-void *mmalloc_detach(xbt_mheap_t mdp)
-{
- struct mdesc mtemp, *mdptemp;
-
- if (mdp != NULL) {
- /* Remove the heap from the linked list of heaps attached by mmalloc */
- mdptemp = __mmalloc_default_mdp;
- while(mdptemp->next_mdesc != mdp )
- mdptemp = mdptemp->next_mdesc;
-
- mdptemp->next_mdesc = mdp->next_mdesc;
-
- mmalloc_detach_no_free(mdp);
- mtemp = *mdp;
-
- /* Now unmap all the pages associated with this region by asking for a
- negative increment equal to the current size of the region. */
-
- if ((mmorecore(&mtemp,
- (char *) mtemp.base - (char *) mtemp.breakval)) ==
- NULL) {
- /* Deallocating failed. Update the original malloc descriptor
- with any changes */
- *mdp = mtemp;
- } else {
- if (mtemp.flags & MMALLOC_DEVZERO) {
- close(mtemp.fd);
- }
- mdp = NULL;
- }
- }
-
- return (mdp);
-}
