1/*
2 * Copyright (c) 2003-2007 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#include <mach/vm_param.h>
30#include <chud/chud_xnu.h>
31#include <machine/machine_routines.h>
32
33extern unsigned int IODefaultCacheBits(addr64_t pa);
34extern unsigned int vm_page_free_count;
35extern unsigned int vm_page_inactive_count;
36
37__private_extern__ uint64_t
38chudxnu_avail_memory_size(void)
39{
40    return max_mem;
41}
42
43__private_extern__ uint64_t
44chudxnu_phys_memory_size(void)
45{
46    return mem_actual;
47}
48
49/*
50 * This function is not intended to be valid for any amount of time,
51 * it is just an instantaneous snapshot of the current free memory size.
52 */
53__private_extern__
54uint64_t chudxnu_free_memory_size(void)
55{
56    return (uint64_t)vm_page_free_count * (uint64_t)page_size;
57}
58
59/*
60 * This function is not intended to be valid for any amount of time,
61 * it is just an instantaneous snapshot of the current inactive memory size.
62 */
63__private_extern__
64uint64_t chudxnu_inactive_memory_size(void)
65{
66	return (uint64_t)vm_page_inactive_count * (uint64_t)page_size;
67}
68
69