72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/****************************************************************************
|
|
* sched/clock/clock_realtime2absticks.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <time.h>
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
#include "clock/clock.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: clock_realtime2absticks
|
|
*
|
|
* Description:
|
|
* Convert real time to monotonic ticks.
|
|
*
|
|
* Input Parameters:
|
|
* mono - Return the converted time here.
|
|
* abstime - Convert this absolute time to ticks
|
|
*
|
|
* Returned Value:
|
|
* OK (0) on success; a negated errno value on failure.
|
|
*
|
|
* Assumptions:
|
|
* Interrupts should be disabled so that the time is not changing during
|
|
* the calculation
|
|
*
|
|
****************************************************************************/
|
|
|
|
int clock_realtime2absticks(FAR const struct timespec *reltime,
|
|
FAR clock_t *absticks)
|
|
{
|
|
#ifndef CONFIG_CLOCK_TIMEKEEPING
|
|
struct timespec mono;
|
|
|
|
clock_timespec_subtract(reltime, &g_basetime, &mono);
|
|
|
|
*absticks = clock_time2ticks(&mono);
|
|
|
|
return OK;
|
|
#else
|
|
return -ENOSYS;
|
|
#endif
|
|
}
|