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% ----------------------------
\subsubsection{Process Isolation}
% ----------------------------
\begin{frame}[fragile]
\frametitle{Why isolating tasks?}
\begin{figure}[h]
\centering
\includegraphics[width=5cm]{images/multithread_norm.png}
\end{figure}
\end{frame}
% ----------------------------
\begin{frame}[fragile]
\frametitle{Multithreaded Application under attack}
\begin{figure}[h]
\centering
\includegraphics[width=5cm]{images/multithread_attack.png}
\end{figure}
\end{frame}
% ----------------------------
\begin{frame}[fragile]
\frametitle{Multi-process vs. Multi-thread}
\begin{figure}[h]
\centering
\includegraphics[width=8cm]{images/multiproc_norm.png}
\end{figure}
\end{frame}
% ----------------------------
\begin{frame}[fragile]
\frametitle{Multi-process under attack}
\begin{figure}[h]
\centering
\includegraphics[width=8cm]{images/multiproc_attack.png}
\end{figure}
\end{frame}
% ----------------------------
\subsubsection{Memory Management}
% ----------------------------
\begin{frame}[fragile]
\frametitle{Memory Manangement}
\begin{itemize}
\item create process context
\item overload VMA
\end{itemize}
\begin{figure}[h]
\centering
\includegraphics[width=8cm]{images/proc_isol.png}
\end{figure}
\end{frame}
% ----------------------------
\subsubsection{Multiprocess Programming}
% ----------------------------
\begin{frame}[fragile]
\frametitle{Multiprocess Programming}
\begin{columns}[onlytextwidth]
\begin{column}{0.45\textwidth}
\begin{beamerboxesrounded}[shadow=true]{Program:}
\begin{tiny}
\begin{verbatim}
[...]
pid = fork();
switch (pid) {
case -1:
/* error handling */
case 0:
/* child processing */
execve(argv[0], &argv[0], envp);
break;
default:
/* parent processing */
[...]
pid = wait(&status);
}
[...]
\end{verbatim}
\end{tiny}
\end{beamerboxesrounded}
\end{column}
\begin{column}{0.45\textwidth}
\begin{beamerboxesrounded}[shadow=true]{Arguments:}
\begin{tiny}
\begin{verbatim}
char *argv[] = {
"/bin/myappl",
"--config",
"/etc/myconfig",
NULL,
};
\end{verbatim}
\end{tiny}
\end{beamerboxesrounded}
\begin{beamerboxesrounded}[shadow=true]{Environment:}
\begin{tiny}
\begin{verbatim}
char *envp[] = {
"HOME=/myhome",
"PATH=/bin:/usr/bin",
"TZ=UTC0",
NULL,
};
\end{verbatim}
\end{tiny}
\end{beamerboxesrounded}
\end{column}
\end{columns}
\end{frame}
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