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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-04-16 11:23:29 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-04-16 11:36:48 +0200 |
commit | e98df4d8d03299ded58427ec6b22b2e409af5865 (patch) | |
tree | 2b5672956b25ce6f0c97b216c1141ab3395f06b9 /cpukit/score/include/rtems/score/isrlock.h | |
parent | score: Add const qualifier (diff) | |
download | rtems-e98df4d8d03299ded58427ec6b22b2e409af5865.tar.bz2 |
score: Add _ISR_lock_Flash()
Diffstat (limited to '')
-rw-r--r-- | cpukit/score/include/rtems/score/isrlock.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/cpukit/score/include/rtems/score/isrlock.h b/cpukit/score/include/rtems/score/isrlock.h index d716b3898e..8449d5d64f 100644 --- a/cpukit/score/include/rtems/score/isrlock.h +++ b/cpukit/score/include/rtems/score/isrlock.h @@ -273,6 +273,37 @@ typedef struct { #define _ISR_lock_Release( _lock, _context ) #endif +/** + * @brief Flashes an ISR lock. + * + * On uni-processor configurations this a simple _ISR_Flash(). On SMP + * configurations this function releases an SMP lock, restores the interrupt + * status, then disables interrupts and acquires the SMP lock again. + * + * This function can be used in thread and interrupt context. + * + * @param[in] _lock The ISR lock control. + * @param[in] _context The local ISR lock context for an acquire and release + * pair. + * + * @see _ISR_lock_ISR_disable_and_acquire() and + * _ISR_lock_Release_and_ISR_enable(). + */ +#if defined( RTEMS_SMP ) + #define _ISR_lock_Flash( _lock, _context ) \ + _SMP_lock_Release_and_ISR_enable( \ + &( _lock )->Lock, \ + &( _context )->Lock_context \ + ); \ + _SMP_lock_ISR_disable_and_acquire( \ + &( _lock )->Lock, \ + &( _context )->Lock_context \ + ) +#else + #define _ISR_lock_Flash( _lock, _context ) \ + _ISR_Flash( ( _context )->isr_level ) +#endif + /** @} */ #ifdef __cplusplus |