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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-04-23 10:01:22 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-05-19 12:00:45 +0200 |
| commit | 02c4c441a51b43b55608893efa4a80a62bb9d4d5 (patch) | |
| tree | 709655b1c53afc3ff981890989a5290d1c400ad2 /cpukit/score/src/corerwlockobtainwrite.c | |
| parent | score: Generalize _Event_Timeout() (diff) | |
| download | rtems-02c4c441a51b43b55608893efa4a80a62bb9d4d5.tar.bz2 | |
score: Add Thread_queue_Control::Lock
Move the complete thread queue enqueue procedure into
_Thread_queue_Enqueue_critical(). It is possible to use the thread
queue lock to protect state of the object embedding the thread queue.
This enables per object fine grained locking in the future.
Delete _Thread_queue_Enter_critical_section().
Update #2273.
Diffstat (limited to 'cpukit/score/src/corerwlockobtainwrite.c')
| -rw-r--r-- | cpukit/score/src/corerwlockobtainwrite.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/cpukit/score/src/corerwlockobtainwrite.c b/cpukit/score/src/corerwlockobtainwrite.c index 3499bcd4c8..409d31aeec 100644 --- a/cpukit/score/src/corerwlockobtainwrite.c +++ b/cpukit/score/src/corerwlockobtainwrite.c @@ -32,7 +32,7 @@ void _CORE_RWLock_Obtain_for_writing( CORE_RWLock_API_mp_support_callout api_rwlock_mp_support ) { - ISR_Level level; + ISR_lock_Context lock_context; /* * If unlocked, then OK to read. @@ -41,13 +41,13 @@ void _CORE_RWLock_Obtain_for_writing( * If any thread is waiting, then we wait. */ - _ISR_Disable( level ); + _Thread_queue_Acquire( &the_rwlock->Wait_queue, &lock_context ); switch ( the_rwlock->current_state ) { case CORE_RWLOCK_UNLOCKED: - the_rwlock->current_state = CORE_RWLOCK_LOCKED_FOR_WRITING; - _ISR_Enable( level ); - executing->Wait.return_code = CORE_RWLOCK_SUCCESSFUL; - return; + the_rwlock->current_state = CORE_RWLOCK_LOCKED_FOR_WRITING; + _Thread_queue_Release( &the_rwlock->Wait_queue, &lock_context ); + executing->Wait.return_code = CORE_RWLOCK_SUCCESSFUL; + return; case CORE_RWLOCK_LOCKED_FOR_READING: case CORE_RWLOCK_LOCKED_FOR_WRITING: @@ -59,7 +59,7 @@ void _CORE_RWLock_Obtain_for_writing( */ if ( !wait ) { - _ISR_Enable( level ); + _Thread_queue_Release( &the_rwlock->Wait_queue, &lock_context ); executing->Wait.return_code = CORE_RWLOCK_UNAVAILABLE; return; } @@ -68,18 +68,16 @@ void _CORE_RWLock_Obtain_for_writing( * We need to wait to enter this critical section */ - _Thread_queue_Enter_critical_section( &the_rwlock->Wait_queue ); - executing->Wait.queue = &the_rwlock->Wait_queue; executing->Wait.id = id; executing->Wait.option = CORE_RWLOCK_THREAD_WAITING_FOR_WRITE; executing->Wait.return_code = CORE_RWLOCK_SUCCESSFUL; - _ISR_Enable( level ); - _Thread_queue_Enqueue( + _Thread_queue_Enqueue_critical( &the_rwlock->Wait_queue, executing, STATES_WAITING_FOR_RWLOCK, - timeout + timeout, + &lock_context ); /* return to API level so it can dispatch and we block */ |