score/src/coremsgflushwait.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreMessageQueue
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _CORE_message_queue_Flush_waiting_threads().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-1999.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #ifdef HAVE_CONFIG_H
0039 #include "config.h"
0040 #endif
0041
0042 #include <rtems/score/chain.h>
0043 #include <rtems/score/isr.h>
0044 #include <rtems/score/coremsgimpl.h>
0045 #include <rtems/score/thread.h>
0046
0047 #if defined(FUNCTIONALITY_NOT_CURRENTLY_USED_BY_ANY_API)
0048
0049   void _CORE_message_queue_Flush_waiting_threads(
0050     CORE_message_queue_Control *the_message_queue
0051   )
0052   {
0053     /* XXX this is not supported for global message queues */
0054
0055     /*
0056      *  IF there are no pending messages,
0057      *  THEN threads may be blocked waiting to RECEIVE a message,
0058      *
0059      *  IF the pending message queue is full
0060      *  THEN threads may be blocked waiting to SEND a message
0061      *
0062      *  But in either case, we will return "unsatisfied nowait"
0063      *  to indicate that the blocking condition was not satisfied
0064      *  and that the blocking state was canceled.
0065      */
0066
0067     _Thread_queue_Flush(
0068       &the_message_queue->Wait_queue,
0069       NULL,
0070       CORE_MESSAGE_QUEUE_STATUS_UNSATISFIED_NOWAIT
0071     );
0072   }
0073 #endif