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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [eventmp.c] - Blame information for rev 593

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1 30 unneback 
/*
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 *  Multiprocessing Support for the Event Manager
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: eventmp.c,v 1.2 2001-09-27 11:59:19 chris Exp $
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 */
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#include <rtems/system.h>
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#include <rtems/rtems/status.h>
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#include <rtems/rtems/event.h>
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#include <rtems/score/mpci.h>
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#include <rtems/score/mppkt.h>
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#include <rtems/score/object.h>
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#include <rtems/rtems/options.h>
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#include <rtems/score/states.h>
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#include <rtems/score/thread.h>
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#include <rtems/rtems/support.h>
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/*PAGE
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 *
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 *  _Event_MP_Send_process_packet
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 *
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 *  This subprogram is not needed since there are no process
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 *  packets to be sent by this manager.
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 *
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 */
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/*PAGE
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 *
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 *  _Event_MP_Send_request_packet
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 *
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 */
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rtems_status_code _Event_MP_Send_request_packet (
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  Event_MP_Remote_operations operation,
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  Objects_Id                 event_id,
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  rtems_event_set         event_in
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)
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{
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  Event_MP_Packet *the_packet;
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  switch ( operation ) {
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    case EVENT_MP_SEND_REQUEST:
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      the_packet                    = _Event_MP_Get_packet();
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      the_packet->Prefix.the_class  = MP_PACKET_EVENT;
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      the_packet->Prefix.length     = sizeof ( Event_MP_Packet );
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      the_packet->Prefix.to_convert = sizeof ( Event_MP_Packet );
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      the_packet->operation         = operation;
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      the_packet->Prefix.id         = event_id;
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      the_packet->event_in          = event_in;
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      return (rtems_status_code)
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        _MPCI_Send_request_packet(
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          rtems_get_node( event_id ),
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          &the_packet->Prefix,
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          STATES_READY
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        );
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      break;
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    case EVENT_MP_SEND_RESPONSE:
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      break;
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  }
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  /*
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   *  The following line is included to satisfy compilers which
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   *  produce warnings when a function does not end with a return.
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   */
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  return RTEMS_SUCCESSFUL;
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}
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/*PAGE
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 *
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 *  _Event_MP_Send_response_packet
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 *
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 */
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void _Event_MP_Send_response_packet (
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  Event_MP_Remote_operations  operation,
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  Thread_Control             *the_thread
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)
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{
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  Event_MP_Packet *the_packet;
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  switch ( operation ) {
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    case EVENT_MP_SEND_RESPONSE:
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      the_packet = ( Event_MP_Packet *) the_thread->receive_packet;
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/*
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 *  The packet being returned already contains the class, length, and
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 *  to_convert fields, therefore they are not set in this routine.
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 */
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      the_packet->operation = operation;
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      the_packet->Prefix.id = the_packet->Prefix.source_tid;
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      _MPCI_Send_response_packet(
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        rtems_get_node( the_packet->Prefix.source_tid ),
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        &the_packet->Prefix
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      );
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      break;
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    case EVENT_MP_SEND_REQUEST:
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      break;
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  }
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}
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/*PAGE
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 *
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 *
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 *  _Event_MP_Process_packet
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 *
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 */
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void _Event_MP_Process_packet (
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  rtems_packet_prefix  *the_packet_prefix
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)
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{
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  Event_MP_Packet *the_packet;
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  Thread_Control  *the_thread;
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  the_packet = (Event_MP_Packet *) the_packet_prefix;
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  switch ( the_packet->operation ) {
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    case EVENT_MP_SEND_REQUEST:
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      the_packet->Prefix.return_code = rtems_event_send(
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        the_packet->Prefix.id,
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        the_packet->event_in
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      );
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      _Event_MP_Send_response_packet(
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        EVENT_MP_SEND_RESPONSE,
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        _Thread_Executing
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      );
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      break;
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    case EVENT_MP_SEND_RESPONSE:
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      the_thread = _MPCI_Process_response( the_packet_prefix );
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      _MPCI_Return_packet( the_packet_prefix );
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      break;
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  }
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}
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/*PAGE
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 *
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 *  _Event_MP_Send_object_was_deleted
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 *
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 *  This subprogram is not needed since there are no objects
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 *  deleted by this manager.
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 *
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 */
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/*PAGE
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 *
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 *  _Event_MP_Send_extract_proxy
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 *
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 *  This subprogram is not needed since there are no objects
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 *  deleted by this manager.
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 *
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 */
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/*PAGE
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 *
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 *  _Event_MP_Get_packet
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 *
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 */
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Event_MP_Packet *_Event_MP_Get_packet ( void )
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{
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  return ( (Event_MP_Packet *) _MPCI_Get_packet() );
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}
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/* end of file */

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