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Highlighting the fact that debuginfo is not needed for SDT probes to work; rework caller_is example

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Sergio Durigan Junior 2014-10-17 19:47:48 -04:00
parent 3554d9c84c
commit 27a1de29b7
1 changed files with 11 additions and 4 deletions
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gdb-best-friend.tex
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@ -231,7 +231,7 @@ process("./example-stap").mark("my_probe") $arg1:long
\pause \pause
\item{Integrated with the \textit{breakpoint} system. Support for printing a \probe{}'s argument value.} \item{Integrated with the \textit{breakpoint} system. Support for printing a \probe{}'s argument value.}
\pause \pause
\item{Not necessary to include debug information in your binary (\texttt{-g} flag); arguments are encoded directly in the asm.} \item{\textcolor{red}{Not necessary to include debug information in your binary (\texttt{-g} flag); arguments are encoded directly in the asm.}}
\pause \pause
\item{Also possible to use optmization flags (\texttt{-O}).} \item{Also possible to use optmization flags (\texttt{-O}).}
\end{itemize} \end{itemize}
@ -339,7 +339,6 @@ $2 = 10
\begin{frame}[fragile] \begin{frame}[fragile]
\frametitle{\python{}$^3$} \frametitle{\python{}$^3$}
% \begin{itemize}
\begin{block}{caller\_is.py} \begin{block}{caller\_is.py}
\tiny \tiny
\begin{lstlisting}[language=python,showstringspaces=false] \begin{lstlisting}[language=python,showstringspaces=false]
@ -370,8 +369,16 @@ CallerIs()
\begin{frame}[fragile] \begin{frame}[fragile]
\frametitle{\python{}$^4$} \frametitle{\python{}$^4$}
\begin{itemize} \begin{itemize}
\item{\verb|(gdb) source caller_is.py|} \item{To use it:}
\item{\verb|(gdb) break foo if $caller_is ("bar")|} \begin{block}{Using caller\_is.py}
\tiny
\begin{lstlisting}[language=sh,showstringspaces=false]
(gdb) source caller_is.py
(gdb) break foo if $caller_is ("bar")
\end{lstlisting}
\end{block}
\item{Internal variables and functions on \gdb{} start with \verb|$|.}
\item{\texttt{caller\_is.py} is part of upstream \gdb{}.}
\end{itemize} \end{itemize}
\end{frame} \end{frame}