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Annotation of XNU/osfmk/kern/MKTiming.c, 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:  * Copyright (c) 1999 Apple Computer, Inc.  All rights reserved.
        !            24:  *
        !            25:  * HISTORY
        !            26:  *
        !            27:  */
        !            28: 
        !            29: #include <mach/mach_types.h>
        !            30: 
        !            31: #include <kern/clock.h>
        !            32: 
        !            33: #include <mach/MKTraps.h>
        !            34: 
        !            35: void
        !            36: MKGetTimeBaseInfo(
        !            37:        UInt32*         minAbsoluteTimeDelta,
        !            38:        UInt32*         theAbsoluteTimeToNanosecondNumerator,
        !            39:        UInt32*         theAbsoluteTimeToNanosecondDenominator,
        !            40:        UInt32*         theProcessorToAbsoluteTimeNumerator,
        !            41:        UInt32*         theProcessorToAbsoluteTimeDenominator)
        !            42: {
        !            43:        UInt32          result[5];
        !            44: 
        !            45:        clock_get_timebase_info(
        !            46:                                                &result[0],
        !            47:                                                &result[1],     &result[2],
        !            48:                                                &result[3],     &result[4]);
        !            49: 
        !            50:        copyout((void *)&result[0], (void *)minAbsoluteTimeDelta,
        !            51:                sizeof (UInt32));
        !            52: 
        !            53:        copyout((void *)&result[1], (void *)theAbsoluteTimeToNanosecondNumerator,
        !            54:                sizeof (UInt32));
        !            55:        copyout((void *)&result[2], (void *)theAbsoluteTimeToNanosecondDenominator,
        !            56:                sizeof (UInt32));
        !            57: 
        !            58:        copyout((void *)&result[3], (void *)theProcessorToAbsoluteTimeNumerator,
        !            59:                sizeof (UInt32));
        !            60:        copyout((void *)&result[4], (void *)theProcessorToAbsoluteTimeDenominator,
        !            61:                sizeof (UInt32));
        !            62: }

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