--- libaitsched/inc/aitsched.h	2023/02/25 15:40:48	1.31.2.3
+++ libaitsched/inc/aitsched.h	2026/05/19 15:53:56	1.35
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: aitsched.h,v 1.31.2.3 2023/02/25 15:40:48 misho Exp $
+* $Id: aitsched.h,v 1.35 2026/05/19 15:53:56 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -12,7 +12,7 @@ terms:
 All of the documentation and software included in the ELWIX and AITNET
 Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
 
-Copyright 2004 - 2023
+Copyright 2004 - 2026
 	by Michael Pounov <misho@elwix.org>.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -146,6 +146,8 @@ struct sched_HooksTask {
 		sched_hook_func_t	exception;
 		/* condition(sched_root_task_t *root, intptr_t *stopValue) -> int */
 		sched_hook_func_t	condition;
+		/* profile(sched_task_t *root, intptr_t *stageValue) -> int */
+		sched_hook_func_t	profile;
 	}	hook_exec;
 	struct {
 		/* init(sched_root_task_t *root, void *data) -> int */
@@ -258,7 +260,11 @@ struct sched_RootTask {
 };
 #define ROOT_QUEUE_EMPTY(x, _q)	TAILQ_EMPTY(&((x)->root_##_q))
 #define ROOT_RETURN(x)	(x)->root_ret
+#define ROOT_PROFILING(x, _cb) (x)->root_hooks.hook_exec.profile = (_cb)
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 int sched_GetErrno();
 const char *sched_GetError();
@@ -387,7 +393,7 @@ sched_task_t *schedQueryby(sched_root_task_t * __restr
  *
  * @root = root task
  * @on = Activate or =0 deactivate
- * return: -1 error or 0 ok
+ * return: -1 error, 1 already started, 2 another thread already started or 0 ok
  */
 int schedSignalDispatch(sched_root_task_t * __restrict root, int on);
 
@@ -767,5 +773,8 @@ void *sched_taskExit(sched_task_t *task, intptr_t retc
  */
 #define taskExit(t, x)		return sched_taskExit((t), (intptr_t) (x))
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif