57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
|
/****************************************************************************
|
||
|
|
* libs/libc/time/lib_gethrtime.c
|
||
|
|
*
|
||
|
|
* 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 <sys/time.h>
|
||
|
|
#include <time.h>
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Public Functions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Name: gethrtime
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* Get the current time
|
||
|
|
*
|
||
|
|
* Returned Value:
|
||
|
|
* The current value of the system time in ns
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
hrtime_t gethrtime(void)
|
||
|
|
{
|
||
|
|
struct timespec ts;
|
||
|
|
|
||
|
|
#ifdef CONFIG_CLOCK_MONOTONIC
|
||
|
|
clock_gettime(CLOCK_MONOTONIC, &ts);
|
||
|
|
#else
|
||
|
|
clock_gettime(CLOCK_REALTIME, &ts);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return (hrtime_t)1000000000 * ts.tv_sec + ts.tv_nsec;
|
||
|
|
}
|