/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSScoreUserExt
*
* @brief This source file contains the implementation of
* _User_extensions_Add_set().
*/
/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/userextimpl.h>
#include <rtems/score/smp.h>
#include <rtems/score/percpu.h>
static void _User_extensions_Set_ancestors( void )
{
#if defined(RTEMS_SMP)
if ( _Chain_Is_empty( &_User_extensions_Switches_list ) ) {
uint32_t cpu_max;
uint32_t cpu_index;
cpu_max = _SMP_Get_processor_maximum();
for ( cpu_index = 0 ; cpu_index < cpu_max ; ++cpu_index ) {
Per_CPU_Control *cpu;
cpu = _Per_CPU_Get_by_index( cpu_index );
cpu->ancestor = cpu->executing;
}
}
#endif
}
void _User_extensions_Add_set(
User_extensions_Control *the_extension
)
{
ISR_lock_Context lock_context;
_User_extensions_Acquire( &lock_context );
_Chain_Initialize_node( &the_extension->Node );
_Chain_Append_unprotected(
&_User_extensions_List.Active,
&the_extension->Node
);
_User_extensions_Release( &lock_context );
/*
* If a switch handler is present, append it to the switch chain.
*/
if ( the_extension->Callouts.thread_switch != NULL ) {
the_extension->Switch.thread_switch =
the_extension->Callouts.thread_switch;
_Per_CPU_Acquire_all( &lock_context );
_User_extensions_Set_ancestors();
_Chain_Initialize_node( &the_extension->Switch.Node );
_Chain_Append_unprotected(
&_User_extensions_Switches_list,
&the_extension->Switch.Node
);
_Per_CPU_Release_all( &lock_context );
}
}
