score/src/schedulersimpleyield.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreSchedulerSimple
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Scheduler_simple_Yield().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 2011.
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/schedulersimpleimpl.h>
0043
0044 void _Scheduler_simple_Yield(
0045   const Scheduler_Control *scheduler,
0046   Thread_Control          *the_thread,
0047   Scheduler_Node          *node
0048 )
0049 {
0050   Scheduler_simple_Context *context;
0051   unsigned int              insert_priority;
0052
0053   context = _Scheduler_simple_Get_context( scheduler );
0054
0055   (void) node;
0056
0057   _Chain_Extract_unprotected( &the_thread->Object.Node );
0058   insert_priority = (unsigned int) _Thread_Get_priority( the_thread );
0059   insert_priority = SCHEDULER_PRIORITY_APPEND( insert_priority );
0060   _Scheduler_simple_Insert( &context->Ready, the_thread, insert_priority );
0061   _Scheduler_uniprocessor_Yield(
0062     scheduler,
0063     _Scheduler_simple_Get_highest_ready
0064   );
0065 }