- First working version of the TRICS collision protection module

devexec.w

@@ -175,6 +175,17 @@ take care of invoking the apropriate commands on all registered counting
 devices.
 
 
+\subsubsection{Locking the Device Executor}
+In some instances user code may wish to lock the device executor. An
+example is  a long running data saving operation. In order to do this
+two functions are provided:
+
+@d devlock @{
+	void LockDeviceExecutor(pExeList self);
+	void UnlockDeviceExecutor(pExeList self);
+
+@}
+
 \subsubsection{The Rest}
 The rest of the interface includes initialisation and deletion routines
 and some access routines. With the devexec being such an important system
@@ -266,7 +277,8 @@ to the global SICS device executor.
     connection with non blocking operation  such as motors started
     with run.
   */
-  
+/*--------------------------- Locking ---------------------------------*/
+ @<devlock@> 
 /* -------------------------- Executor management -------------------------*/
 	
 	pExeList GetExecutor(void);