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>
64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/****************************************************************************
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* libs/libc/pthread/pthread_mutexattr_getprioceiling.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 <pthread.h>
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#include <errno.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_mutexattr_getprioceiling
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*
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* Description:
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* Return the mutex ceiling priority from the mutex attributes.
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*
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* Input Parameters:
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* attr - The mutex attributes to query
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* prioceiling - Location to return the mutex ceiling priority
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*
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* Returned Value:
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* 0, if the mutex type was successfully return in 'prioceiling', or
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* EINVAL, if any NULL pointers provided.
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*
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* Assumptions:
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*
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****************************************************************************/
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int pthread_mutexattr_getprioceiling(FAR const pthread_mutexattr_t *attr,
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FAR int *prioceiling)
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{
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#ifdef CONFIG_PRIORITY_PROTECT
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if (attr != NULL && prioceiling != NULL)
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{
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*prioceiling = attr->ceiling;
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return OK;
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}
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#endif
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return EINVAL;
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}
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