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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Support Call to function Enables Locking of Mutex Object
*/
/*
* COPYRIGHT (c) 1989-2014.
* 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/posixapi.h>
Status_Control _POSIX_Mutex_Seize_slow(
POSIX_Mutex_Control *the_mutex,
const Thread_queue_Operations *operations,
Thread_Control *executing,
const struct timespec *abstime,
Thread_queue_Context *queue_context
)
{
if ( (uintptr_t) abstime != POSIX_MUTEX_ABSTIME_TRY_LOCK ) {
_Thread_queue_Context_set_thread_state(
queue_context,
STATES_WAITING_FOR_MUTEX
);
_Thread_queue_Context_set_deadlock_callout(
queue_context,
_Thread_queue_Deadlock_status
);
_Thread_queue_Enqueue(
&the_mutex->Recursive.Mutex.Queue.Queue,
operations,
executing,
queue_context
);
return _Thread_Wait_get_status( executing );
} else {
_POSIX_Mutex_Release( the_mutex, queue_context );
return STATUS_UNAVAILABLE;
}
}
int _POSIX_Mutex_Lock_support(
pthread_mutex_t *mutex,
const struct timespec *abstime,
Thread_queue_Enqueue_callout enqueue_callout
)
{
POSIX_Mutex_Control *the_mutex;
unsigned long flags;
Thread_queue_Context queue_context;
Thread_Control *executing;
Status_Control status;
the_mutex = _POSIX_Mutex_Get( mutex );
POSIX_MUTEX_VALIDATE_OBJECT( the_mutex, flags );
executing = _POSIX_Mutex_Acquire( the_mutex, &queue_context );
_Thread_queue_Context_set_enqueue_callout( &queue_context, enqueue_callout);
_Thread_queue_Context_set_timeout_argument( &queue_context, abstime, true );
switch ( _POSIX_Mutex_Get_protocol( flags ) ) {
case POSIX_MUTEX_PRIORITY_CEILING:
status = _POSIX_Mutex_Ceiling_seize(
the_mutex,
flags,
executing,
abstime,
&queue_context
);
break;
case POSIX_MUTEX_NO_PROTOCOL:
status = _POSIX_Mutex_Seize(
the_mutex,
flags,
POSIX_MUTEX_NO_PROTOCOL_TQ_OPERATIONS,
executing,
abstime,
&queue_context
);
break;
default:
_Assert(
_POSIX_Mutex_Get_protocol( flags ) == POSIX_MUTEX_PRIORITY_INHERIT
);
status = _POSIX_Mutex_Seize(
the_mutex,
flags,
POSIX_MUTEX_PRIORITY_INHERIT_TQ_OPERATIONS,
executing,
abstime,
&queue_context
);
break;
}
return _POSIX_Get_error( status );
}
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