--- libaitsched/inc/aitsched.h	2011/12/08 08:02:23	1.3
+++ libaitsched/inc/aitsched.h	2011/12/08 09:17:34	1.3.2.1
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: aitsched.h,v 1.3 2011/12/08 08:02:23 misho Exp $
+* $Id: aitsched.h,v 1.3.2.1 2011/12/08 09:17:34 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -114,8 +114,14 @@ typedef struct sched_HooksTask hooks_task_t;
 /* task callback, like pthread callback! */
 typedef void *(*sched_task_func_t)(sched_task_t * /* current task data*/);
 
+/* task lock helpers */
+#define TASK_LOCK(x)		((x)->task_lock++)
+#define TASK_UNLOCK(x)		((x)->task_lock ^= (x)->task_lock)
+#define TASK_ISLOCKED(x)	((x)->task_lock)
+
 /* task & queue */
 struct sched_Task {
+	volatile int			task_lock;
 	unsigned int			task_id;
 	sched_task_type_t		task_type;