OSBase.h

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    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
   50 __OSAbsoluteTime(
   51         AbsoluteTime    abstime)
   52 {
   53         return (*(uint64_t *)&abstime);
   54 }
   55 
   56 OS_INLINE
   57 uint64_t *
   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 */

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FreeBSD/Linux Kernel Cross Reference sys/libkern/libkern/OSBase.h

FreeBSD/Linux Kernel Cross Reference
sys/libkern/libkern/OSBase.h