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/**
* @file
*
* @ingroup ScoreUserExt
*
* @brief User Extension Handler API
*/
/*
* COPYRIGHT (c) 1989-2009.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*/
#ifndef _RTEMS_SCORE_USEREXTIMPL_H
#define _RTEMS_SCORE_USEREXTIMPL_H
#include <rtems/score/userext.h>
#include <rtems/score/chainimpl.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup ScoreUserExt User Extension Handler
*
* @ingroup Score
*
* @addtogroup ScoreUserExt
*/
/**@{**/
/**
* @brief List of active extensions.
*/
extern Chain_Control _User_extensions_List;
/**
* @brief List of active task switch extensions.
*/
extern Chain_Control _User_extensions_Switches_list;
/**
* @name Extension Maintainance
*/
/**@{**/
void _User_extensions_Handler_initialization( void );
void _User_extensions_Add_set(
User_extensions_Control *extension
);
RTEMS_INLINE_ROUTINE void _User_extensions_Add_API_set(
User_extensions_Control *extension
)
{
_User_extensions_Add_set( extension );
}
RTEMS_INLINE_ROUTINE void _User_extensions_Add_set_with_table(
User_extensions_Control *extension,
const User_extensions_Table *extension_table
)
{
extension->Callouts = *extension_table;
_User_extensions_Add_set( extension );
}
void _User_extensions_Remove_set(
User_extensions_Control *extension
);
/**
* @brief User extension visitor.
*
* @param[in, out] executing The currently executing thread.
* @param[in, out] arg The argument passed to _User_extensions_Iterate().
* @param[in] callouts The current callouts.
*/
typedef void (*User_extensions_Visitor)(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
typedef struct {
Thread_Control *created;
bool ok;
} User_extensions_Thread_create_context;
void _User_extensions_Thread_create_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
void _User_extensions_Thread_delete_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
void _User_extensions_Thread_start_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
void _User_extensions_Thread_restart_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
void _User_extensions_Thread_begin_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
void _User_extensions_Thread_exitted_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
typedef struct {
Internal_errors_Source source;
bool is_internal;
Internal_errors_t error;
} User_extensions_Fatal_context;
void _User_extensions_Fatal_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
);
/**
* @brief Iterates through all user extensions and calls the visitor for each.
*
* @param[in, out] arg The argument passed to the visitor.
* @param[in] visitor is the visitor for each extension.
*/
void _User_extensions_Iterate(
void *arg,
User_extensions_Visitor visitor
);
/** @} */
/**
* @name Extension Callout Dispatcher
*/
/**@{**/
static inline bool _User_extensions_Thread_create( Thread_Control *created )
{
User_extensions_Thread_create_context ctx = { created, true };
_User_extensions_Iterate( &ctx, _User_extensions_Thread_create_visitor );
return ctx.ok;
}
static inline void _User_extensions_Thread_delete( Thread_Control *deleted )
{
_User_extensions_Iterate(
deleted,
_User_extensions_Thread_delete_visitor
);
}
static inline void _User_extensions_Thread_start( Thread_Control *started )
{
_User_extensions_Iterate(
started,
_User_extensions_Thread_start_visitor
);
}
static inline void _User_extensions_Thread_restart( Thread_Control *restarted )
{
_User_extensions_Iterate(
restarted,
_User_extensions_Thread_restart_visitor
);
}
static inline void _User_extensions_Thread_begin( Thread_Control *executing )
{
_User_extensions_Iterate(
executing,
_User_extensions_Thread_begin_visitor
);
}
static inline void _User_extensions_Thread_switch(
Thread_Control *executing,
Thread_Control *heir
)
{
const Chain_Control *chain = &_User_extensions_Switches_list;
const Chain_Node *tail = _Chain_Immutable_tail( chain );
const Chain_Node *node = _Chain_Immutable_first( chain );
while ( node != tail ) {
const User_extensions_Switch_control *extension =
(const User_extensions_Switch_control *) node;
(*extension->thread_switch)( executing, heir );
node = _Chain_Immutable_next( node );
}
}
static inline void _User_extensions_Thread_exitted( Thread_Control *executing )
{
_User_extensions_Iterate(
executing,
_User_extensions_Thread_exitted_visitor
);
}
static inline void _User_extensions_Fatal(
Internal_errors_Source source,
bool is_internal,
Internal_errors_t error
)
{
User_extensions_Fatal_context ctx = { source, is_internal, error };
_User_extensions_Iterate( &ctx, _User_extensions_Fatal_visitor );
}
/** @} */
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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