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Diffstat (limited to 'cpukit/rtems/inline/rtems/rtems/asr.inl')
-rw-r--r-- | cpukit/rtems/inline/rtems/rtems/asr.inl | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/cpukit/rtems/inline/rtems/rtems/asr.inl b/cpukit/rtems/inline/rtems/rtems/asr.inl new file mode 100644 index 0000000000..93587a312c --- /dev/null +++ b/cpukit/rtems/inline/rtems/rtems/asr.inl @@ -0,0 +1,119 @@ +/** + * @file rtems/rtems/asr.inl + * + * This include file contains the implemenation of all routines + * associated with the asynchronous signal handler which are inlined. + */ + +/* 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. + * + * $Id$ + */ + +#ifndef _RTEMS_RTEMS_ASR_H +# error "Never use <rtems/rtems/asr.inl> directly; include <rtems/rtems/asr.h> instead." +#endif + +#ifndef _RTEMS_RTEMS_ASR_INL +#define _RTEMS_RTEMS_ASR_INL + +#include <rtems/score/isr.h> + +/** + * @addtogroup 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 ); +} + +/**@}*/ + +#endif +/* end of include file */ |