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score: Add _ISR_lock_Flash()

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This commit is contained in:
Sebastian Huber
2015-04-16 11:23:29 +02:00
parent 64548a3aff
commit e98df4d8d0
2 changed files with 33 additions and 0 deletions
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31
cpukit/score/include/rtems/score/isrlock.h
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@@ -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

2
testsuites/sptests/sp37/init.c
View File

@@ -179,6 +179,8 @@ static void test_isr_locks( void )
_ISR_lock_ISR_disable_and_acquire( &lock, &lock_context );
rtems_test_assert( normal_interrupt_level != _ISR_Get_level() );
_ISR_lock_Flash( &lock, &lock_context );
rtems_test_assert( normal_interrupt_level != _ISR_Get_level() );
_ISR_lock_Release_and_ISR_enable( &lock, &lock_context );
rtems_test_assert( normal_interrupt_level == _ISR_Get_level() );