64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
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/****************************************************************************
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* libs/libc/pthread/pthread_getcpuclockid.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 <pthread.h>
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#include <errno.h>
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#include <time.h>
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#include <nuttx/clock.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_getcpuclockid
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*
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* Description:
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* The pthread_getcpuclockid() function using to access a thread CPU-time
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* clock
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*
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* Input Parameters:
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* thread_id - The id of the thread to fetch the running time
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* clockid - The clockid with type CLOCK_THREAD_CPUTIME_ID that required
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*
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* Returned Value:
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* Return 0 on success, return error number on error
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*
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****************************************************************************/
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int pthread_getcpuclockid(pthread_t thread_id, FAR clockid_t *clockid)
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{
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if (pthread_kill(thread_id, 0) != 0)
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{
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return ESRCH;
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}
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/* for pthread_getcpuclockid, the clock type are
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* CLOCK_THREAD_CPUTIME_ID
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*/
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*clockid = (thread_id << CLOCK_SHIFT) | CLOCK_THREAD_CPUTIME_ID;
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return OK;
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}
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