score/src/userextremoveset.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreUserExt
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _User_extensions_Remove_set().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2007.
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/userextimpl.h>
0043 #include <rtems/score/percpu.h>
0044
0045 void _User_extensions_Remove_set (
0046   User_extensions_Control  *the_extension
0047 )
0048 {
0049   ISR_lock_Context lock_context;
0050
0051   _User_extensions_Acquire( &lock_context );
0052   _Chain_Iterator_registry_update(
0053     &_User_extensions_List.Iterators,
0054     &the_extension->Node
0055   );
0056   _Chain_Extract_unprotected( &the_extension->Node );
0057   _User_extensions_Release( &lock_context );
0058
0059   /*
0060    * If a switch handler is present, remove it.
0061    */
0062
0063   if ( the_extension->Callouts.thread_switch != NULL ) {
0064     _Per_CPU_Acquire_all( &lock_context );
0065     _Chain_Extract_unprotected( &the_extension->Switch.Node );
0066     _Per_CPU_Release_all( &lock_context );
0067   }
0068 }