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/**
* @file
*
* @brief User Extension Iteration Helpers
*
* @ingroup ScoreUserExt
*/
/*
* Copyright (c) 2012, 2017 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/config.h>
#include <rtems/score/userextimpl.h>
#include <pthread.h>
User_extensions_List _User_extensions_List = {
CHAIN_INITIALIZER_EMPTY( _User_extensions_List.Active ),
CHAIN_ITERATOR_REGISTRY_INITIALIZER( _User_extensions_List.Iterators )
#if defined(RTEMS_SMP)
,
ISR_LOCK_INITIALIZER( "User Extensions List" )
#endif
};
void _User_extensions_Thread_create_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_create_extension callout = callouts->thread_create;
if ( callout != NULL ) {
User_extensions_Thread_create_context *ctx = arg;
ctx->ok = ctx->ok && (*callout)( executing, ctx->created );
}
}
void _User_extensions_Thread_delete_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_delete_extension callout = callouts->thread_delete;
if ( callout != NULL ) {
(*callout)( executing, arg );
}
}
void _User_extensions_Thread_start_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_start_extension callout = callouts->thread_start;
if ( callout != NULL ) {
(*callout)( executing, arg );
}
}
void _User_extensions_Thread_restart_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_restart_extension callout = callouts->thread_restart;
if ( callout != NULL ) {
(*callout)( executing, arg );
}
}
void _User_extensions_Thread_begin_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_begin_extension callout = callouts->thread_begin;
if ( callout != NULL ) {
(*callout)( executing );
}
}
void _User_extensions_Thread_exitted_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_exitted_extension callout = callouts->thread_exitted;
if ( callout != NULL ) {
(*callout)( executing );
}
}
void _User_extensions_Fatal_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_fatal_extension callout = callouts->fatal;
if ( callout != NULL ) {
const User_extensions_Fatal_context *ctx = arg;
(*callout)( ctx->source, false, ctx->error );
}
}
void _User_extensions_Thread_terminate_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_terminate_extension callout =
callouts->thread_terminate;
if ( callout != NULL ) {
(*callout)( executing );
}
}
void _User_extensions_Iterate(
void *arg,
User_extensions_Visitor visitor,
Chain_Iterator_direction direction
)
{
Thread_Control *executing;
const User_extensions_Table *initial_current;
const User_extensions_Table *initial_begin;
const User_extensions_Table *initial_end;
const Chain_Node *end;
Chain_Node *node;
User_extensions_Iterator iter;
ISR_lock_Context lock_context;
executing = _Thread_Get_executing();
initial_begin = rtems_configuration_get_user_extension_table();
initial_end =
initial_begin + rtems_configuration_get_number_of_initial_extensions();
if ( direction == CHAIN_ITERATOR_FORWARD ) {
initial_current = initial_begin;
while ( initial_current != initial_end ) {
(*visitor)( executing, arg, initial_current );
++initial_current;
}
end = _Chain_Immutable_tail( &_User_extensions_List.Active );
} else {
end = _Chain_Immutable_head( &_User_extensions_List.Active );
}
_User_extensions_Acquire( &lock_context );
_Chain_Iterator_initialize(
&_User_extensions_List.Active,
&_User_extensions_List.Iterators,
&iter.Iterator,
direction
);
if ( executing != NULL ) {
iter.previous = executing->last_user_extensions_iterator;
executing->last_user_extensions_iterator = &iter;
}
while ( ( node = _Chain_Iterator_next( &iter.Iterator ) ) != end ) {
const User_extensions_Control *extension;
_Chain_Iterator_set_position( &iter.Iterator, node );
_User_extensions_Release( &lock_context );
extension = (const User_extensions_Control *) node;
( *visitor )( executing, arg, &extension->Callouts );
_User_extensions_Acquire( &lock_context );
}
if ( executing != NULL ) {
executing->last_user_extensions_iterator = iter.previous;
}
_Chain_Iterator_destroy( &iter.Iterator );
_User_extensions_Release( &lock_context );
if ( direction == CHAIN_ITERATOR_BACKWARD ) {
initial_current = initial_end;
while ( initial_current != initial_begin ) {
--initial_current;
(*visitor)( executing, arg, initial_current );
}
}
}
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