Subversion Repositories openrisc_2011-10-31

/*

 *  ITRON 3.0 Mailbox Manager

 *

 *  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.

 *

 *  $Id: trcv_mbx.c,v 1.2 2001-09-27 11:59:13 chris Exp $

 */

#include <itron.h>

#include <rtems/itron/mbox.h>

#include <rtems/itron/task.h>

/*

 *  trcv_msg - Receive Message from Mailbox with Timeout

 */

ER trcv_msg(

  T_MSG **ppk_msg,

  ID      mbxid,

  TMO     tmout

)

{

  register ITRON_Mailbox_Control *the_mailbox;

  Watchdog_Interval               interval;

  boolean                         wait;

  Objects_Locations               location;

  unsigned32                      size;

  if (!ppk_msg)

    return E_PAR;

  interval = 0;

  if ( tmout == TMO_POL ) {

    wait = FALSE;

  } else {

    wait = TRUE;

    if ( tmout != TMO_FEVR )

      interval = TOD_MILLISECONDS_TO_TICKS(tmout);

  }

  if ( wait && _ITRON_Is_in_non_task_state() )

    return E_CTX;

  the_mailbox = _ITRON_Mailbox_Get( mbxid, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:

    case OBJECTS_ERROR:

      return _ITRON_Mailbox_Clarify_get_id_error( mbxid );

    case OBJECTS_LOCAL:

      _CORE_message_queue_Seize(

        &the_mailbox->message_queue,

        the_mailbox->Object.id,

        ppk_msg,

        &size,

        wait,

        interval

      );

      break;

  }

  _ITRON_return_errorno(

    _ITRON_Mailbox_Translate_core_message_queue_return_code(

        _Thread_Executing->Wait.return_code ) );

}