Endless loop bug fix.

On releasing all resources, the node waits for the completion of all
tasks which are associated to a specific action. Since we never
incremented the task counter for actions, this loop spun.

mtapi_c/src/embb_mtapi_scheduler_t.c

@@ -638,14 +638,23 @@ mtapi_boolean_t embb_mtapi_scheduler_schedule_task(
 
   assert(MTAPI_NULL != node);
 
+  if (embb_mtapi_action_pool_is_handle_valid(
+    node->action_pool, task->action)) {
 #ifdef EMBB_HARD_REALTIME
     if (scheduler->mode == GLOBAL_EDF) {
-    embb_mtapi_task_queue_push(&node->global_task_queue, task);
-    pushed = MTAPI_TRUE;
+      /* fetch action and schedule */
+      embb_mtapi_action_t* local_action =
+        embb_mtapi_action_pool_get_storage_for_handle(
+        node->action_pool, task->action);
+      /* one more task in flight for this action */
+      embb_atomic_fetch_and_add_int(&local_action->num_tasks, 1);
+
+      pushed = embb_mtapi_task_queue_push(&node->global_task_queue, task);
+      if (!pushed) {
+        embb_atomic_fetch_and_add_int(&local_action->num_tasks, -1);
+      }
     } else {
 #endif /*EMBB_HARD_REALTIME*/
-    if (embb_mtapi_action_pool_is_handle_valid(
-      node->action_pool, task->action)) {
     embb_mtapi_queue_t* local_queue = MTAPI_NULL;
     /* fetch action and schedule */
     embb_mtapi_action_t* local_action =
@@ -704,10 +713,10 @@ mtapi_boolean_t embb_mtapi_scheduler_schedule_task(
       /* task could not be launched */
       embb_atomic_fetch_and_add_int(&local_action->num_tasks, -1);
     }
-    }
 #ifdef EMBB_HARD_REALTIME
     }
 #endif /*EMBB_HARD_REALTIME*/
+  }
 
   return pushed;
 }