osfmk/i386/hi_res_clock.h

   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 #ifndef _MACHINE_HI_RES_CLOCK_H_
  27 #define _MACHINE_HI_RES_CLOCK_H_
  28
  29 #include <types.h>
  30 #include <mach/i386/vm_types.h>
  31
  32 extern vm_offset_t hi_res_clk_mmap(
  33         dev_t           dev,
  34         vm_offset_t     off,
  35         int             prot);
  36
  37 extern void clock_thread_386(
  38         int     loop_iterations_per_tick,
  39         int     *high_res_clock);
  40
  41 #endif  /* _MACHINE_HI_RES_CLOCK_H_ */