/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Returns the Current Priority Ceiling of the Mutex
*/
/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/posix/muteximpl.h>
#include <rtems/posix/priorityimpl.h>
/*
* 13.6.2 Change the Priority Ceiling of a Mutex, P1003.1c/Draft 10, p. 131
*/
int pthread_mutex_getprioceiling(
#ifdef HAVE_PTHREAD_MUTEX_GETCEILING_CONST
const pthread_mutex_t *mutex,
#else
pthread_mutex_t *mutex,
#endif
int *prioceiling
)
{
POSIX_Mutex_Control *the_mutex;
unsigned long flags;
Thread_queue_Context queue_context;
if ( prioceiling == NULL ) {
return EINVAL;
}
the_mutex = _POSIX_Mutex_Get( RTEMS_DECONST( pthread_mutex_t *, mutex ) );
POSIX_MUTEX_VALIDATE_OBJECT( the_mutex, flags );
_POSIX_Mutex_Acquire( the_mutex, &queue_context );
if ( _POSIX_Mutex_Get_protocol( flags ) == POSIX_MUTEX_PRIORITY_CEILING ) {
*prioceiling = _POSIX_Priority_From_core(
_POSIX_Mutex_Get_scheduler( the_mutex ),
_POSIX_Mutex_Get_priority( the_mutex )
);
} else {
*prioceiling = 0;
}
_POSIX_Mutex_Release( the_mutex, &queue_context );
return 0;
}
