From 300f6a481aaf9e6d29811faca71bf7104a01492c Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 22 Jun 2016 17:09:23 +0200 Subject: score: Rework thread priority management Add priority nodes which contribute to the overall thread priority. The actual priority of a thread is now an aggregation of priority nodes. The thread priority aggregation for the home scheduler instance of a thread consists of at least one priority node, which is normally the real priority of the thread. The locking protocols (e.g. priority ceiling and priority inheritance), rate-monotonic period objects and the POSIX sporadic server add, change and remove priority nodes. A thread changes its priority now immediately, e.g. priority changes are not deferred until the thread releases its last resource. Replace the _Thread_Change_priority() function with * _Thread_Priority_perform_actions(), * _Thread_Priority_add(), * _Thread_Priority_remove(), * _Thread_Priority_change(), and * _Thread_Priority_update(). Update #2412. Update #2556. --- cpukit/posix/src/mutexsetprioceiling.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'cpukit/posix/src/mutexsetprioceiling.c') diff --git a/cpukit/posix/src/mutexsetprioceiling.c b/cpukit/posix/src/mutexsetprioceiling.c index 31e54c5fc3..aaea57ddfb 100644 --- a/cpukit/posix/src/mutexsetprioceiling.c +++ b/cpukit/posix/src/mutexsetprioceiling.c @@ -64,7 +64,18 @@ int pthread_mutex_setprioceiling( new_priority = _POSIX_Priority_To_core( scheduler, prioceiling, &valid ); if ( valid ) { - _CORE_ceiling_mutex_Set_priority( &the_mutex->Mutex, new_priority ); + Thread_queue_Context queue_context; + Per_CPU_Control *cpu_self; + + _Thread_queue_Context_clear_priority_updates( &queue_context ); + _CORE_ceiling_mutex_Set_priority( + &the_mutex->Mutex, + new_priority, + &queue_context + ); + cpu_self = _Thread_Dispatch_disable(); + _Thread_Priority_update( &queue_context ); + _Thread_Dispatch_enable( cpu_self ); error = 0; } else { error = EINVAL; -- cgit v1.2.3