blob: be52bccaa3b743742274c2e56dd1234dbb6160c8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/* Fast memory allocator.
Copyright (C) 2003, 2007, 2008 Free Software Foundation, Inc.
Written by Neal H Walfield.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3 of the
License, or (at your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef __ZALLOC_H__
#define __ZALLOC_H__
#include <stdint.h>
#include <hurd/stddef.h>
/* The amount of memory available (in PAGESIZE units). */
extern uintptr_t zalloc_memory;
/* Add to the pool the block BLOCK of size SIZE. BLOCK must be
aligned to the system's minimum page size. SIZE must be a multiple
of the system's minimum page size. */
void zfree (uintptr_t block, uintptr_t size);
/* Allocate a block of memory of size SIZE. SIZE must be a multiple
of the system's minimum page size. Clears the allocated
memory. */
uintptr_t zalloc_internal (uintptr_t size);
static inline uintptr_t
zalloc (uintptr_t size)
{
if (size / PAGESIZE > zalloc_memory)
return 0;
return zalloc_internal (size);
}
/* Dump some internal data structures. Only defined if zalloc was
compiled without NDEBUG defined. */
#ifndef NDEBUG
void zalloc_dump_zones (const char *prefix);
#else
#define zalloc_dump_zones(prefix) do {} while (0)
#endif
#endif /* __ZALLOC_H__ */
|