83 lines
3.2 KiB
C
83 lines
3.2 KiB
C
/****************************************************************************
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* libc/pthread/pthread_mutexattr_getrobust.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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_getrobust
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*
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* Description:
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* Return the mutex robustneess from the mutex attributes.
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*
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* Parameters:
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* attr - The mutex attributes to query
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* robust - Location to return the robustness indication
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*
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* Return Value:
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* 0, if the robustness was successfully return in 'robust', 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_getrobust(FAR const pthread_mutexattr_t *attr,
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FAR int *robust)
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{
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if (attr != NULL && robust != NULL)
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{
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#if defined(CONFIG_PTHREAD_MUTEX_UNSAFE)
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*robust = PTHREAD_MUTEX_STALLED;
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#elif defined(CONFIG_PTHREAD_MUTEX_BOTH)
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*robust = attr->robust;
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#else /* Default: CONFIG_PTHREAD_MUTEX_ROBUST */
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*robust = PTHREAD_MUTEX_ROBUST;
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#endif
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return 0;
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}
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return EINVAL;
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}
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