score: Introduce scheduler nodes

Rename scheduler per-thread information into scheduler nodes using
Scheduler_Node as the base type.  Use inheritance for specialized
schedulers.

Move the scheduler specific states from the thread control block into
the scheduler node structure.

Validate the SMP scheduler node state transitions in case RTEMS_DEBUG is
defined.

1 files changed, 4 insertions, 6 deletions

diff --git a/cpukit/score/src/schedulercbsattachthread.c b/cpukit/score/src/schedulercbsattachthread.c
index 43bf92da66..3892e89aae 100644
--- a/cpukit/score/src/schedulercbsattachthread.c
+++ b/cpukit/score/src/schedulercbsattachthread.c
@@ -18,7 +18,7 @@
 #include "config.h"
 #endif
 
-#include <rtems/score/schedulercbs.h>
+#include <rtems/score/schedulercbsimpl.h>
 #include <rtems/score/threadimpl.h>
 
 int _Scheduler_CBS_Attach_thread (
@@ -43,18 +43,16 @@ int _Scheduler_CBS_Attach_thread (
   the_thread = _Thread_Get(task_id, &location);
   /* The routine _Thread_Get may disable dispatch and not enable again. */
   if ( the_thread ) {
-    Scheduler_CBS_Per_thread *sched_info;
-
-    sched_info = (Scheduler_CBS_Per_thread *) the_thread->scheduler_info;
+    Scheduler_CBS_Node *node = _Scheduler_CBS_Node_get( the_thread );
 
     /* Thread is already attached to a server. */
-    if ( sched_info->cbs_server ) {
+    if ( node->cbs_server ) {
       _Objects_Put( &the_thread->Object );
       return SCHEDULER_CBS_ERROR_FULL;
     }
 
     _Scheduler_CBS_Server_list[server_id].task_id = task_id;
-    sched_info->cbs_server = &_Scheduler_CBS_Server_list[server_id];
+    node->cbs_server = &_Scheduler_CBS_Server_list[server_id];
 
     the_thread->budget_callout   = _Scheduler_CBS_Budget_callout;
     the_thread->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_CALLOUT;