posix: Implement self-contained POSIX barriers

POSIX barriers are now available in all configurations and no longer
depend on --enable-posix.

Update #2514.
Update #3114.

1 files changed, 11 insertions, 33 deletions

diff --git a/cpukit/posix/src/pbarrierdestroy.c b/cpukit/posix/src/pbarrierdestroy.c
index 8f85762211..83d06318b5 100644
--- a/cpukit/posix/src/pbarrierdestroy.c
+++ b/cpukit/posix/src/pbarrierdestroy.c
@@ -9,6 +9,8 @@
  *  COPYRIGHT (c) 1989-2007.
  *  On-Line Applications Research Corporation (OAR).
  *
+ *  Copyright (c) 2017 embedded brains GmbH
+ *
  *  The license and distribution terms for this file may be
  *  found in the file LICENSE in this distribution or at
  *  http://www.rtems.org/license/LICENSE.
@@ -20,47 +22,23 @@
 
 #include <rtems/posix/barrierimpl.h>
 
-/**
- *  This directive allows a thread to delete a barrier specified by
- *  the barrier id.  The barrier is freed back to the inactive
- *  barrier chain.
- *
- *  @param[in] barrier is the barrier id
- * 
- *  @return This method returns 0 if there was not an
- *  error. Otherwise, a status code is returned indicating the
- *  source of the error.
- */
-int pthread_barrier_destroy(
-  pthread_barrier_t *barrier
-)
+int pthread_barrier_destroy( pthread_barrier_t *_barrier )
 {
-  POSIX_Barrier_Control *the_barrier;
+  POSIX_Barrier_Control *barrier;
   Thread_queue_Context   queue_context;
 
-  if ( barrier == NULL ) {
-    return EINVAL;
-  }
-
-  _Objects_Allocator_lock();
-  the_barrier = _POSIX_Barrier_Get( barrier, &queue_context );
+  POSIX_BARRIER_VALIDATE_OBJECT( _barrier );
 
-  if ( the_barrier == NULL ) {
-    _Objects_Allocator_unlock();
-    return EINVAL;
-  }
+  barrier = _POSIX_Barrier_Get( _barrier );
 
-  _CORE_barrier_Acquire_critical( &the_barrier->Barrier, &queue_context );
+  _POSIX_Barrier_Queue_acquire( barrier, &queue_context );
 
-  if ( the_barrier->Barrier.number_of_waiting_threads != 0 ) {
-    _CORE_barrier_Release( &the_barrier->Barrier, &queue_context );
-    _Objects_Allocator_unlock();
+  if ( barrier->waiting_threads != 0 ) {
+    _POSIX_Barrier_Queue_release( barrier, &queue_context );
     return EBUSY;
   }
 
-  _Objects_Close( &_POSIX_Barrier_Information, &the_barrier->Object );
-  _CORE_barrier_Release( &the_barrier->Barrier, &queue_context );
-  _POSIX_Barrier_Free( the_barrier );
-  _Objects_Allocator_unlock();
+  barrier->flags = 0;
+  _POSIX_Barrier_Queue_release( barrier, &queue_context );
   return 0;
 }