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/*  apiext.h

 *

 *  This is the API Extensions Handler.

 *

 *  COPYRIGHT (c) 1989-1999.

 *  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.OARcorp.com/rtems/license.html.

 *

 *  apiext.h,v 1.10 1999/11/17 17:50:35 joel Exp

 */

#ifndef __API_EXTENSIONS_h

#define __API_EXTENSIONS_h

#include <rtems/score/chain.h>

#include <rtems/score/thread.h>

/*

 *  The control structure which defines the points at which an API

 *  can add an extension to the system initialization thread.

 */

typedef void (*API_extensions_Predriver_hook)(void);

typedef void (*API_extensions_Postdriver_hook)(void);

typedef void (*API_extensions_Postswitch_hook)(

                 Thread_Control *

             );

typedef struct {

  Chain_Node                      Node;

  API_extensions_Predriver_hook   predriver_hook;

  API_extensions_Postdriver_hook  postdriver_hook;

  API_extensions_Postswitch_hook  postswitch_hook;

}  API_extensions_Control;

/*

 *  This is the list of API extensions to the system initialization.

 */

SCORE_EXTERN Chain_Control _API_extensions_List;

/*

 *  _API_extensions_Initialization

 *

 *  DESCRIPTION:

 *

 *  This routine initializes the API extension handler.

 *

 */

void _API_extensions_Initialization( void );

/*

 *  _API_extensions_Add

 *

 *  DESCRIPTION:

 *

 *  XXX

 */

void _API_extensions_Add(

  API_extensions_Control *the_extension

);

/*

 *  _API_extensions_Run_predriver

 *

 *  DESCRIPTION:

 *

 *  XXX

 */

void _API_extensions_Run_predriver( void );

/*

 *  _API_extensions_Run_postdriver

 *

 *  DESCRIPTION:

 *

 *  XXX

 */

void _API_extensions_Run_postdriver( void );

/*

 *  _API_extensions_Run_postswitch

 *

 *  DESCRIPTION:

 *

 *  XXX

 */

void _API_extensions_Run_postswitch( void );

#endif

/* end of include file */