/********************************************************************************
* sched/clock_internal.h
*
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************/
#ifndef __SCHED_CLOCK_INTERNAL_H
#define __SCHED_CLOCK_INTERNAL_H
/********************************************************************************
* Included Files
********************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <nuttx/clock.h>
#include <nuttx/compiler.h>
/********************************************************************************
* Pre-processor Definitions
********************************************************************************/
/* Configuration ************************************************************/
/* If CONFIG_SYSTEM_TIME64 is selected and the CPU supports long long types,
* then a 64-bit system time will be used.
*/
#ifndef CONFIG_HAVE_LONG_LONG
# undef CONFIG_SYSTEM_TIME64
#endif
/********************************************************************************
* Public Type Definitions
********************************************************************************/
/********************************************************************************
* Global Variables
********************************************************************************/
#ifdef CONFIG_SYSTEM_TIME64
extern uint64_t g_tickbias;
#else
extern uint32_t g_tickbias;
#endif
extern struct timespec g_basetime;
/********************************************************************************
* Public Function Prototypes
********************************************************************************/
void weak_function clock_initialize(void);
void weak_function clock_timer(void);
int clock_abstime2ticks(clockid_t clockid,
FAR const struct timespec *abstime,
FAR int *ticks);
int clock_time2ticks(FAR const struct timespec *reltime, FAR int *ticks);
int clock_ticks2time(int ticks, FAR struct timespec *reltime);
#endif /* __SCHED_CLOCK_INTERNAL_H */
