f1ed349dd9
here is the reason: 1.clock_systime_timespec(core function) always exist regardless the setting 2.CLOCK_MONOTONIC is a foundamental clock type required by many places Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/****************************************************************************
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* libs/libc/time/lib_gethrtime.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/time.h>
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#include <time.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: gethrtime
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*
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* Description:
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* Get the current time
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*
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* Returned Value:
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* The current value of the system time in ns
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*
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****************************************************************************/
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hrtime_t gethrtime(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return (hrtime_t)1000000000 * ts.tv_sec + ts.tv_nsec;
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}
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