- First working version of the TRICS collision protection module

devexec.tex

@@ -212,6 +212,29 @@ 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:
+
+\begin{flushleft} \small
+\begin{minipage}{\linewidth} \label{scrap4}
+$\langle$devlock {\footnotesize ?}$\rangle\equiv$
+\vspace{-1ex}
+\begin{list}{}{} \item
+\mbox{}\verb@@\\
+\mbox{}\verb@        void LockDeviceExecutor(pExeList self);@\\
+\mbox{}\verb@        void UnlockDeviceExecutor(pExeList self);@\\
+\mbox{}\verb@@\\
+\mbox{}\verb@@$\diamond$
+\end{list}
+\vspace{-1ex}
+\footnotesize\addtolength{\baselineskip}{-1ex}
+\begin{list}{}{\setlength{\itemsep}{-\parsep}\setlength{\itemindent}{-\leftmargin}}
+\item Macro referenced in scrap ?.
+\end{list}
+\end{minipage}\\[4ex]
+\end{flushleft}
 \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
@@ -219,7 +242,7 @@ component a function {\bf GetExecutor} is provided which retrieves a pointer
 to the global SICS device executor. 
 
 \begin{flushleft} \small
-\begin{minipage}{\linewidth} \label{scrap4}
+\begin{minipage}{\linewidth} \label{scrap5}
 \verb@"devexec.h"@ {\footnotesize ? }$\equiv$
 \vspace{-1ex}
 \begin{list}{}{} \item
@@ -308,7 +331,8 @@ to the global SICS device executor.
 \mbox{}\verb@    connection with non blocking operation  such as motors started@\\
 \mbox{}\verb@    with run.@\\
 \mbox{}\verb@  */@\\
-\mbox{}\verb@  @\\
+\mbox{}\verb@/*--------------------------- Locking ---------------------------------*/@\\
+\mbox{}\verb@ @$\langle$devlock {\footnotesize ?}$\rangle$\verb@ @\\
 \mbox{}\verb@/* -------------------------- Executor management -------------------------*/@\\
 \mbox{}\verb@        @\\
 \mbox{}\verb@        pExeList GetExecutor(void);@\\