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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: */
25: /*
26: * HISTORY
27: *
28: * Revision 1.1.1.1 1998/09/22 21:05:48 wsanchez
29: * Import of Mac OS X kernel (~semeria)
30: *
31: * Revision 1.1.1.1 1998/03/07 02:25:59 wsanchez
32: * Import of OSF Mach kernel (~mburg)
33: *
34: * Revision 1.2.6.1 1994/09/23 03:13:17 ezf
35: * change marker to not FREE
36: * [1994/09/22 21:58:56 ezf]
37: *
38: * Revision 1.2.2.2 1993/06/09 02:55:33 gm
39: * Added to OSF/1 R1.3 from NMK15.0.
40: * [1993/06/02 21:31:02 jeffc]
41: *
42: * Revision 1.2 1993/04/19 17:17:07 devrcs
43: * Fixes for ANSI C
44: * [1993/02/26 14:02:46 sp]
45: *
46: * Revision 1.1 1992/09/30 02:36:58 robert
47: * Initial revision
48: *
49: * $EndLog$
50: */
51: /* CMU_HIST */
52: /*
53: * Revision 2.3 91/05/14 17:40:25 mrt
54: * Correcting copyright
55: *
56: * Revision 2.2 91/02/05 17:56:58 mrt
57: * Changed to new Mach copyright
58: * [91/02/01 17:49:29 mrt]
59: *
60: */
61: /* CMU_ENDHIST */
62: /*
63: * Mach Operating System
64: * Copyright (c) 1991 Carnegie Mellon University
65: * All Rights Reserved.
66: *
67: * Permission to use, copy, modify and distribute this software and its
68: * documentation is hereby granted, provided that both the copyright
69: * notice and this permission notice appear in all copies of the
70: * software, derivative works or modified versions, and any portions
71: * thereof, and that both notices appear in supporting documentation.
72: *
73: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
74: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
75: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
76: *
77: * Carnegie Mellon requests users of this software to return to
78: *
79: * Software Distribution Coordinator or [email protected]
80: * School of Computer Science
81: * Carnegie Mellon University
82: * Pittsburgh PA 15213-3890
83: *
84: * any improvements or extensions that they make and grant Carnegie Mellon rights
85: * to redistribute these changes.
86: */
87: /*
88: */
89: /*
90: * Time-keeper for kernel IO devices.
91: *
92: * May or may not have any relation to wall-clock time.
93: */
94:
95: #ifndef _SYS_TIME_H_
96: #define _SYS_TIME_H_
97: #include <mach/time_value.h>
98:
99: extern time_value_t time;
100:
101: /*
102: * Definitions to keep old code happy.
103: */
104: #define timeval_t time_value_t
105: #define timeval time_value
106: #define tv_sec seconds
107: #define tv_usec microseconds
108:
109: #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
110: #define timercmp(tvp, uvp, cmp) \
111: ((tvp)->tv_sec cmp (uvp)->tv_sec || \
112: (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
113: #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
114: #endif /* _SYS_TIME_H_ */
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