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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-05-22 09:31:13 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-05-23 09:04:17 +0200 |
| commit | 272a80b776b862d5432338b39e1e4bcaf74ad4b2 (patch) | |
| tree | c4507601a794a6a4f7822fbd316b82df121c284e /cpukit | |
| parent | posix: fix race condition between pthread_create and capture engine (diff) | |
| download | rtems-272a80b776b862d5432338b39e1e4bcaf74ad4b2.tar.bz2 | |
score: PR2179: Fix initially locked PCP mutexes
Elevate the priority of the creating task to the ceiling priority in
case a semaphore is created as initially locked.
Diffstat (limited to 'cpukit')
| -rw-r--r-- | cpukit/score/src/coremutex.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/cpukit/score/src/coremutex.c b/cpukit/score/src/coremutex.c index dcd2e778fe..9745f82b7e 100644 --- a/cpukit/score/src/coremutex.c +++ b/cpukit/score/src/coremutex.c @@ -64,9 +64,9 @@ CORE_mutex_Status _CORE_mutex_Initialize( the_mutex->holder_id = _Thread_Executing->Object.id; if ( _CORE_mutex_Is_inherit_priority( &the_mutex->Attributes ) || _CORE_mutex_Is_priority_ceiling( &the_mutex->Attributes ) ) { + Priority_Control ceiling = the_mutex->Attributes.priority_ceiling; - if ( _Thread_Executing->current_priority < - the_mutex->Attributes.priority_ceiling ) + if ( _Thread_Executing->current_priority < ceiling ) return CORE_MUTEX_STATUS_CEILING_VIOLATED; #ifdef __RTEMS_STRICT_ORDER_MUTEX__ _Chain_Prepend_unprotected( &_Thread_Executing->lock_mutex, @@ -75,6 +75,7 @@ CORE_mutex_Status _CORE_mutex_Initialize( #endif _Thread_Executing->resource_count++; + _Thread_Change_priority( _Thread_Executing, ceiling, false ); } } else { the_mutex->nest_count = 0; |