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/* userext.inl
*
* This file contains the macro implementation of the inlined routines
* from the User Extension Handler
*
* COPYRIGHT (c) 1989-1997.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __USER_EXTENSIONS_inl
#define __USER_EXTENSIONS_inl
/*PAGE
*
* _User_extensions_Handler_initialization
*
* DESCRIPTION:
*
* This routine performs the initialization necessary for this handler.
*/
RTEMS_INLINE_ROUTINE void _User_extensions_Handler_initialization (
User_extensions_Table *initial_extensions
)
{
_Chain_Initialize_empty( &_User_extensions_List );
if ( initial_extensions ) {
_User_extensions_Initial.Callouts = *initial_extensions;
_Chain_Append( &_User_extensions_List, &_User_extensions_Initial.Node );
}
}
/*PAGE
*
* _User_extensions_Add_set
*
* DESCRIPTION:
*
* This routine is used to add a user extension set to the active list.
*/
RTEMS_INLINE_ROUTINE void _User_extensions_Add_set (
User_extensions_Control *the_extension,
User_extensions_Table *extension_table
)
{
the_extension->Callouts = *extension_table;
_Chain_Append( &_User_extensions_List, &the_extension->Node );
}
/*PAGE
*
* _User_extensions_Add_API_set
* DESCRIPTION:
*
* This routine is used to add an API extension set to the active list.
*/
RTEMS_INLINE_ROUTINE void _User_extensions_Add_API_set (
User_extensions_Control *the_extension
)
{
_Chain_Prepend( &_User_extensions_List, &the_extension->Node );
}
/*PAGE
*
* _User_extensions_Remove_set
*
* DESCRIPTION:
*
* This routine is used to remove a user extension set from the active list.
*/
RTEMS_INLINE_ROUTINE void _User_extensions_Remove_set (
User_extensions_Control *the_extension
)
{
_Chain_Extract( &the_extension->Node );
}
/*PAGE
*
* _User_extensions_Thread_switch
*
* DESCRIPTION:
*
* This routine is used to invoke the user extension which
* is invoked when a context switch occurs.
*/
RTEMS_INLINE_ROUTINE void _User_extensions_Thread_switch (
Thread_Control *executing,
Thread_Control *heir
)
{
Chain_Node *the_node;
User_extensions_Control *the_extension;
for ( the_node = _User_extensions_List.first ;
!_Chain_Is_tail( &_User_extensions_List, the_node ) ;
the_node = the_node->next ) {
the_extension = (User_extensions_Control *) the_node;
if ( the_extension->Callouts.thread_switch != NULL )
(*the_extension->Callouts.thread_switch)( executing, heir );
}
}
#endif
/* end of include file */
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