3240540952
pthread_mutex_setprioceiling and pthread_mutex_getprioceiling refers https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutex_setprioceiling.html Signed-off-by: makejian <makejian@xiaomi.com>
75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
/****************************************************************************
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* libs/libc/pthread/pthread_mutex_setprioceiling.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 <nuttx/mutex.h>
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#include <pthread.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_mutex_setprioceiling
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*
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* Description:
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* Set the priority ceiling of a mutex.
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*
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* Input Parameters:
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* mutex - The mutex in which to set the mutex priority ceiling.
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* prioceiling - The mutex priority ceiling value to set.
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* old_ceiling - Location to return the mutex ceiling priority set before.
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*
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* Returned Value:
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* 0, indicating the mutex priority ceiling was successfully set, or
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* EINVAL, indicating 'mutex' or 'old_ceiling' is NULL, or 'prioceiling'
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* is out of range.
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*
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* Assumptions:
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*
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****************************************************************************/
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int pthread_mutex_setprioceiling(FAR pthread_mutex_t *mutex,
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int prioceiling, FAR int *old_ceiling)
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{
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int ret = EINVAL;
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#ifdef CONFIG_PRIORITY_PROTECT
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ret = pthread_mutex_lock(mutex);
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if (ret != OK)
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{
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return ret;
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}
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# ifdef CONFIG_PTHREAD_MUTEX_TYPES
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ret = -nxrmutex_setprioceiling(&mutex->mutex, prioceiling, old_ceiling);
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# else
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ret = -nxmutex_setprioceiling(&mutex->mutex, prioceiling, old_ceiling);
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# endif
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pthread_mutex_unlock(mutex);
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#endif
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return ret;
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}
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