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Annotation of XNU/osfmk/sys/time.h, revision 1.1

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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