score/src/coremsgbroadcast.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_Broadcast().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2008.
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/coremsgimpl.h>
0043 #include <rtems/score/objectimpl.h>
0044
0045 Status_Control _CORE_message_queue_Broadcast(
0046   CORE_message_queue_Control *the_message_queue,
0047   const void                 *buffer,
0048   size_t                      size,
0049   uint32_t                   *count,
0050   Thread_queue_Context       *queue_context
0051 )
0052 {
0053   uint32_t number_broadcasted;
0054
0055   if ( size > the_message_queue->maximum_message_size ) {
0056     _ISR_lock_ISR_enable( &queue_context->Lock_context.Lock_context );
0057     return STATUS_MESSAGE_INVALID_SIZE;
0058   }
0059
0060   number_broadcasted = 0;
0061
0062   _CORE_message_queue_Acquire_critical( the_message_queue, queue_context );
0063
0064   while (
0065     _CORE_message_queue_Dequeue_receiver(
0066       the_message_queue,
0067       buffer,
0068       size,
0069       0,
0070       queue_context
0071     ) != NULL
0072   ) {
0073     number_broadcasted += 1;
0074
0075     _CORE_message_queue_Acquire( the_message_queue, queue_context );
0076   }
0077
0078   _CORE_message_queue_Release( the_message_queue, queue_context );
0079
0080   *count = number_broadcasted;
0081   return STATUS_SUCCESSFUL;
0082 }