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/*  inline/asr.inl
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 *
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 *  This include file contains the implemenation of all routines
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 *  associated with the asynchronous signal handler which are inlined.
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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: asr.inl,v 1.2 2001-09-27 11:59:18 chris Exp $
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 */
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#ifndef __INLINE_ASR_inl
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#define __INLINE_ASR_inl
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#include
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/*PAGE
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 *
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 *  _ASR_Initialize
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine initializes the given RTEMS_ASR information record.
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 */
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RTEMS_INLINE_ROUTINE void _ASR_Initialize (
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  ASR_Information *information
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)
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{
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  information->is_enabled      = TRUE;
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  information->handler         = NULL;
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  information->mode_set        = RTEMS_DEFAULT_MODES;
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  information->signals_posted  = 0;
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  information->signals_pending = 0;
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  information->nest_level      = 0;
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}
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/*PAGE
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 *
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 *  _ASR_Swap_signals
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine atomically swaps the pending and posted signal
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 *  sets.  This is done when the thread alters its mode in such a
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 *  way that the RTEMS_ASR disable/enable flag changes.
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 */
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RTEMS_INLINE_ROUTINE void _ASR_Swap_signals (
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  ASR_Information *information
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)
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{
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  rtems_signal_set _signals;
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  ISR_Level        _level;
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  _ISR_Disable( _level );
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    _signals                     = information->signals_pending;
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    information->signals_pending = information->signals_posted;
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    information->signals_posted  = _signals;
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  _ISR_Enable( _level );
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}
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/*PAGE
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 *
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 *  _ASR_Is_null_handler
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 *
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 *  DESCRIPTION:
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 *
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 *  This function returns TRUE if the given asr_handler is NULL and
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 *  FALSE otherwise.
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 */
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RTEMS_INLINE_ROUTINE boolean _ASR_Is_null_handler (
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  rtems_asr_entry asr_handler
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)
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{
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  return asr_handler == NULL;
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}
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/*PAGE
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 *
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 *  _ASR_Are_signals_pending
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 *
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 *  DESCRIPTION:
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 *
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 *  This function returns TRUE if there are signals pending in the
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 *  given RTEMS_ASR information record and FALSE otherwise.
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 */
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RTEMS_INLINE_ROUTINE boolean _ASR_Are_signals_pending (
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  ASR_Information *information
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)
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{
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  return information->signals_posted != 0;
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}
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/*PAGE
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 *
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 *  _ASR_Post_signals
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine posts the given signals into the signal_set
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 *  passed in.  The result is returned to the user in signal_set.
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 *
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 *  NOTE:  This must be implemented as a macro.
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 */
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RTEMS_INLINE_ROUTINE void _ASR_Post_signals(
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  rtems_signal_set  signals,
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  rtems_signal_set *signal_set
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)
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{
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  ISR_Level              _level;
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  _ISR_Disable( _level );
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    *signal_set |= signals;
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  _ISR_Enable( _level );
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}
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#endif
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/* end of include file */

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