score/src/threadqextract.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreThreadQueue
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Thread_queue_Extract().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2014.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  *  Copyright (C) 2015, 2016 embedded brains GmbH & Co. KG
0017  *
0018  * Redistribution and use in source and binary forms, with or without
0019  * modification, are permitted provided that the following conditions
0020  * are met:
0021  * 1. Redistributions of source code must retain the above copyright
0022  *    notice, this list of conditions and the following disclaimer.
0023  * 2. Redistributions in binary form must reproduce the above copyright
0024  *    notice, this list of conditions and the following disclaimer in the
0025  *    documentation and/or other materials provided with the distribution.
0026  *
0027  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0028  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0029  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0030  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0031  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0032  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0033  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0034  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0035  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0036  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0037  * POSSIBILITY OF SUCH DAMAGE.
0038  */
0039
0040 #ifdef HAVE_CONFIG_H
0041 #include "config.h"
0042 #endif
0043
0044 #include <rtems/score/threadqimpl.h>
0045 #include <rtems/score/threadimpl.h>
0046
0047 void _Thread_queue_Extract( Thread_Control *the_thread )
0048 {
0049   Thread_queue_Context  queue_context;
0050   Thread_queue_Queue   *queue;
0051
0052   _Thread_queue_Context_initialize( &queue_context );
0053   _Thread_queue_Context_clear_priority_updates( &queue_context );
0054   _Thread_Wait_acquire( the_thread, &queue_context );
0055
0056   queue = the_thread->Wait.queue;
0057
0058   if ( queue != NULL ) {
0059     _Thread_Wait_remove_request( the_thread, &queue_context.Lock_context );
0060     _Thread_queue_Context_set_MP_callout(
0061       &queue_context,
0062       _Thread_queue_MP_callout_do_nothing
0063     );
0064 #if defined(RTEMS_MULTIPROCESSING)
0065     _Thread_queue_MP_set_callout( the_thread, &queue_context );
0066 #endif
0067     ( *the_thread->Wait.operations->extract )(
0068       queue,
0069       the_thread,
0070       &queue_context
0071     );
0072     _Thread_queue_Resume( queue, the_thread, &queue_context );
0073   } else {
0074     _Thread_Wait_release( the_thread, &queue_context );
0075   }
0076 }