1 /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
2 This file was then part of the GNU C Library. */
4 /* Copyright (c) 2010-2012. The SimGrid Team.
5 * All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
17 # include <sys/types.h> /* for size_t */
18 # include <stdio.h> /* for NULL */
21 /* Datatype representing a separate heap. The whole point of the mmalloc module
22 * is to allow several such heaps in the process. It thus works by redefining
23 * all the classical memory management functions (malloc and friends) with an
24 * extra first argument: the heap in which the memory is to be taken.
26 * The heap structure itself is an opaque object that shouldnt be messed with.
28 typedef struct mdesc *xbt_mheap_t;
30 /* Allocate SIZE bytes of memory. */
31 extern void *mmalloc(xbt_mheap_t md, size_t size);
33 /* Re-allocate the previously allocated block in void*, making the new block
35 extern void *mrealloc(xbt_mheap_t md, void *ptr, size_t size);
37 /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
38 extern void *mcalloc(xbt_mheap_t md, size_t nmemb, size_t size);
40 /* Free a block allocated by `mmalloc', `mrealloc' or `mcalloc'. */
41 extern void mfree(xbt_mheap_t md, void *ptr);
43 /* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
44 extern void *mmemalign(xbt_mheap_t md, size_t alignment, size_t size);
46 /* Allocate SIZE bytes on a page boundary. */
47 extern void *mvalloc(xbt_mheap_t md, size_t size);
49 extern xbt_mheap_t xbt_mheap_new(int fd, void *baseaddr);
51 extern void xbt_mheap_destroy_no_free(xbt_mheap_t md);
53 extern void *xbt_mheap_destroy(xbt_mheap_t md);
55 /* return the heap used when NULL is passed as first argument to any mm* function */
56 extern xbt_mheap_t mmalloc_get_default_md(void);
58 extern void mmalloc_display_info_heap(xbt_mheap_t h);
60 /* To change the heap used when using the legacy version malloc/free/realloc and such */
61 void mmalloc_set_current_heap(xbt_mheap_t new_heap);
62 xbt_mheap_t mmalloc_get_current_heap(void);
64 int mmalloc_compare_heap(xbt_mheap_t mdp1, xbt_mheap_t mdp2, void *std_heap_addr);
67 #endif /* MMALLOC_H */