1 /*
2 * Copyright (c) 2000 Apple Computer, 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 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
30 *
31 * HISTORY
32 *
33 */
34
35 #ifndef _OS_OSBASE_H
36 #define _OS_OSBASE_H
37
38 #include <sys/cdefs.h>
39
40 #include <libkern/OSTypes.h>
41
42 #include <stdint.h>
43
44 __BEGIN_DECLS
45
46 #ifdef KERNEL_PRIVATE
47
48 OS_INLINE
49 uint64_t
__OSAbsoluteTime(AbsoluteTime abstime)50 __OSAbsoluteTime(
51 AbsoluteTime abstime)
52 {
53 return *(uint64_t *)&abstime;
54 }
55
56 OS_INLINE
57 uint64_t *
__OSAbsoluteTimePtr(AbsoluteTime * abstime)58 __OSAbsoluteTimePtr(
59 AbsoluteTime *abstime)
60 {
61 return (uint64_t *)abstime;
62 }
63
64 #define AbsoluteTime_to_scalar(x) (*(uint64_t *)(x))
65
66 /* t1 < = > t2 */
67 #define CMP_ABSOLUTETIME(t1, t2) \
68 (AbsoluteTime_to_scalar(t1) > \
69 AbsoluteTime_to_scalar(t2)? (int)+1 : \
70 (AbsoluteTime_to_scalar(t1) < \
71 AbsoluteTime_to_scalar(t2)? (int)-1 : 0))
72
73 /* t1 += t2 */
74 #define ADD_ABSOLUTETIME(t1, t2) \
75 (AbsoluteTime_to_scalar(t1) += \
76 AbsoluteTime_to_scalar(t2))
77
78 /* t1 -= t2 */
79 #define SUB_ABSOLUTETIME(t1, t2) \
80 (AbsoluteTime_to_scalar(t1) -= \
81 AbsoluteTime_to_scalar(t2))
82
83 #define ADD_ABSOLUTETIME_TICKS(t1, ticks) \
84 (AbsoluteTime_to_scalar(t1) += \
85 (int32_t)(ticks))
86
87 #endif /* KERNEL_PRIVATE */
88
89 __END_DECLS
90
91 #endif /* _OS_OSBASE_H */
92