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/**
* @file
*
* @ingroup ClassicASRImpl
*
* @brief Classic ASR Implementation
*/
/* COPYRIGHT (c) 1989-2008.
* 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.rtems.com/license/LICENSE.
*/
#ifndef _RTEMS_RTEMS_ASRIMPL_H
#define _RTEMS_RTEMS_ASRIMPL_H
#include <rtems/rtems/asr.h>
#include <rtems/score/isrlevel.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup ClassicASRImpl Classic ASR Implementation
*
* @ingroup ClassicASR
*
* @{
*/
/**
* @brief ASR_Initialize
*
* This routine initializes the given RTEMS_ASR information record.
*/
RTEMS_INLINE_ROUTINE void _ASR_Initialize (
ASR_Information *information
)
{
information->is_enabled = false;
information->handler = NULL;
information->mode_set = RTEMS_DEFAULT_MODES;
information->signals_posted = 0;
information->signals_pending = 0;
information->nest_level = 0;
}
/**
* @brief ASR_Swap_signals
*
* This routine atomically swaps the pending and posted signal
* sets. This is done when the thread alters its mode in such a
* way that the RTEMS_ASR disable/enable flag changes.
*/
RTEMS_INLINE_ROUTINE void _ASR_Swap_signals (
ASR_Information *information
)
{
rtems_signal_set _signals;
ISR_Level _level;
_ISR_Disable( _level );
_signals = information->signals_pending;
information->signals_pending = information->signals_posted;
information->signals_posted = _signals;
_ISR_Enable( _level );
}
/**
* @brief ASR_Is_null_handler
*
* This function returns TRUE if the given asr_handler is NULL and
* FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE bool _ASR_Is_null_handler (
rtems_asr_entry asr_handler
)
{
return asr_handler == NULL;
}
/**
* @brief ASR_Are_signals_pending
*
* This function returns TRUE if there are signals pending in the
* given RTEMS_ASR information record and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE bool _ASR_Are_signals_pending (
ASR_Information *information
)
{
return information->signals_posted != 0;
}
/**
* @brief ASR_Post_signals
*
* This routine posts the given signals into the signal_set
* passed in. The result is returned to the user in signal_set.
*
* NOTE: This must be implemented as a macro.
*/
RTEMS_INLINE_ROUTINE void _ASR_Post_signals(
rtems_signal_set signals,
rtems_signal_set *signal_set
)
{
ISR_Level _level;
_ISR_Disable( _level );
*signal_set |= signals;
_ISR_Enable( _level );
}
/**@}*/
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
|
