fixed bug: http://bugs.etersoft.ru/show_bug.cgi?id=5230

include/IONotifyController.h

@@ -280,6 +280,7 @@ class IONotifyController:
 
 		void onChangeUndefined( DependsList::iterator it, bool undefined );
 
+		UniSetTypes::uniset_mutex sig_mutex;
 		ChangeSignal changeSignal;
 
 	private:

src/Processes/IONotifyController.cc

@@ -494,6 +494,7 @@ void IONotifyController::localSaveState( IOController::DIOStateList::iterator& i
 
 	try
 	{	
+		uniset_mutex_lock l(sig_mutex,500);
 		changeSignal.emit(&sm);
 	}
 	catch(...){}
@@ -557,6 +558,7 @@ void IONotifyController::localSaveValue( IOController::AIOStateList::iterator& l
 
 	try
 	{	
+		uniset_mutex_lock l(sig_mutex,500);
 		changeSignal.emit(&sm);
 	}
 	catch(...){}
@@ -1201,6 +1203,7 @@ void IONotifyController::localSetState( IOController::DIOStateList::iterator& it
 
 	try
 	{	
+		uniset_mutex_lock l(sig_mutex,500);
 		changeSignal.emit(&sm);
 	}
 	catch(...){}
@@ -1257,6 +1260,7 @@ void IONotifyController::localSetValue( IOController::AIOStateList::iterator& li
 
 	try
 	{	
+		uniset_mutex_lock l(sig_mutex,500);
 		changeSignal.emit(&sm);
 	}
 	catch(...){}