Subversion Repositories openrisc_2011-10-31

/*

 *  Signal 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: signalsend.c,v 1.2 2001-09-27 11:59:19 chris Exp $

 */

#include <rtems/system.h>

#include <rtems/rtems/status.h>

#include <rtems/rtems/asr.h>

#include <rtems/score/isr.h>

#include <rtems/rtems/modes.h>

#include <rtems/rtems/signal.h>

#include <rtems/score/thread.h>

#include <rtems/rtems/tasks.h>

/*PAGE

 *

 *  rtems_signal_send

 *

 *  This directive allows a thread to send signals to a thread.

 *

 *  Input parameters:

 *    id         - thread id

 *    signal_set - signal set

 *

 *  Output parameters:

 *    RTEMS_SUCCESSFUL - if successful

 *    error code - if unsuccessful

 */

rtems_status_code rtems_signal_send(

  Objects_Id             id,

  rtems_signal_set signal_set

)

{

  register Thread_Control *the_thread;

  Objects_Locations        location;

  RTEMS_API_Control       *api;

  ASR_Information         *asr;

  the_thread = _Thread_Get( id, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:

#if defined(RTEMS_MULTIPROCESSING)

      return _Signal_MP_Send_request_packet(

        SIGNAL_MP_SEND_REQUEST,

        id,

        signal_set

      );

#endif

    case OBJECTS_ERROR:

      return RTEMS_INVALID_ID;

    case OBJECTS_LOCAL:

      api = the_thread->API_Extensions[ THREAD_API_RTEMS ];

      asr = &api->Signal;

      if ( ! _ASR_Is_null_handler( asr->handler ) ) {

        if ( asr->is_enabled ) {

          _ASR_Post_signals( signal_set, &asr->signals_posted );

          the_thread->do_post_task_switch_extension = TRUE;

          if ( _ISR_Is_in_progress() && _Thread_Is_executing( the_thread ) )

            _ISR_Signals_to_thread_executing = TRUE;

        } else {

          _ASR_Post_signals( signal_set, &asr->signals_pending );

        }

        _Thread_Enable_dispatch();

        return RTEMS_SUCCESSFUL;

      }

      _Thread_Enable_dispatch();

      return RTEMS_NOT_DEFINED;

  }

  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */

}