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Annotation of OSKit-Mach/include/sys/time.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  *
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  *
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  *
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  *
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  *
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon rights
        !            24:  * to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     Time-keeper for kernel IO devices.
        !            28:  *
        !            29:  *     May or may not have any relation to wall-clock time.
        !            30:  */
        !            31: 
        !            32: #ifndef _MACH_SA_SYS_TIME_H_
        !            33: #define _MACH_SA_SYS_TIME_H_
        !            34: 
        !            35: #include <mach/time_value.h>
        !            36: 
        !            37: extern time_value_t    time;
        !            38: 
        !            39: /*
        !            40:  * Definitions to keep old code happy.
        !            41:  */
        !            42: #define timeval_t time_value_t
        !            43: #define timeval time_value
        !            44: #define        tv_sec  seconds
        !            45: #define        tv_usec microseconds
        !            46: 
        !            47: #define timerisset(tvp)                ((tvp)->tv_sec || (tvp)->tv_usec)
        !            48: #define timercmp(tvp, uvp, cmp)        \
        !            49:        ((tvp)->tv_sec cmp (uvp)->tv_sec || \
        !            50:         (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
        !            51: #define timerclear(tvp)                (tvp)->tv_sec = (tvp)->tv_usec = 0
        !            52: 
        !            53: #endif /* _MACH_SA_SYS_TIME_H_ */

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