--- libaitsched/src/aitsched.c	2011/10/04 23:12:33	1.2.2.5
+++ libaitsched/src/aitsched.c	2011/12/08 08:02:23	1.3
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: aitsched.c,v 1.2.2.5 2011/10/04 23:12:33 misho Exp $
+* $Id: aitsched.c,v 1.3 2011/12/08 08:02:23 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -140,7 +140,8 @@ schedInit(void ** __restrict data, size_t datlen)
 			if (datlen) {
 				root->root_data.iov_base = *data;
 				root->root_data.iov_len = datlen;
-			} else {
+			} else { /* if datlen == 0, switch to callbacks init mode */
+				 /* little hack :) for correct initialization of scheduler */
 				func = (int(*)(sched_root_task_t*)) data;
 				func(root);
 			}
@@ -284,7 +285,7 @@ schedCancel(sched_task_t * __restrict task)
  * @criteria = find task by criteria [CRITERIA_CALL|CRITERIA_ARG|CRITERIA_FD|CRITERIA_VAL|CRITERIA_TV]
  * @param = search parameter
  * @hook = custom cleanup hook function, may be NULL
- * return: -1 error or 0 ok
+ * return: -1 error, -2 error in sub-stage cancel execution, -3 error from custom hook or 0 ok
  */
 int
 schedCancelby(sched_root_task_t * __restrict root, sched_queue_t * __restrict queue,