% ----------------------------
\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}