nuttx/libs/libc/pthread/pthread_mutexattr_setrobust.c

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/****************************************************************************
* libs/libc/pthread/pthread_mutexattr_setrobust.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 <pthread.h>
#include <errno.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: pthread_mutexattr_setrobust
*
* Description:
* Set the mutex robustness in the mutex attributes.
*
* Input Parameters:
* attr - The mutex attributes in which to set the mutex type.
* robust - The mutex type value to set.
*
* Returned Value:
* 0, if the mutex robustness was successfully set in 'attr', or
* EINVAL, if 'attr' is NULL or 'robust' unrecognized.
*
* Assumptions:
*
****************************************************************************/
int pthread_mutexattr_setrobust(pthread_mutexattr_t *attr, int robust)
{
#if defined(CONFIG_PTHREAD_MUTEX_UNSAFE)
if (attr != NULL && robust == PTHREAD_MUTEX_STALLED)
{
return OK;
}
return EINVAL;
#elif defined(CONFIG_PTHREAD_MUTEX_BOTH)
if (attr != NULL && (robust == PTHREAD_MUTEX_STALLED ||
robust == PTHREAD_MUTEX_ROBUST))
{
attr->robust = robust;
return OK;
}
return EINVAL;
#else /* Default: CONFIG_PTHREAD_MUTEX_ROBUST */
if (attr != NULL && robust == _PTHREAD_MFLAGS_ROBUST)
{
return OK;
}
return EINVAL;
#endif
}