top/memorylayout.tex

   1 \documentclass[tikz]{standalone}
   2 \usetikzlibrary{arrows.meta,shapes.symbols,matrix,positioning}
   3 \begin{document}
   4 \begin{tikzpicture}[%
   5         memory/.style={
   6                 matrix of nodes,
   7                 every node/.append style={
   8                         font=\footnotesize\tt, outer xsep=.4ex,
   9                 anchor=base},
  10                 column 2/.append style={
  11                         every node/.append style=
  12                         {draw,fill=white,
  13                                 minimum width=#1,
  14                         minimum height=1.3em}
  15                 },
  16                 row sep=-.4pt,
  17         },
  18         memory/.default=4em,
  19         descr/.style={draw=none,fill=none},
  20         break above/.style={shape=tape, tape bend top=in and out, tape bend bottom=none},
  21         break below/.style={shape=tape, tape bend top=none, tape bend bottom=in and out},
  22         !!/.style={fill=green!20}, % chktex 26
  23         pointer/.style = {font=\tt, anchor=base, inner sep=2pt},
  24         ]
  25         \matrix (main) [memory] {
  26                 & |[descr]| {\rm high addresses} \\
  27                 & || heap\\
  28                 & || {\normalsize $\downarrow$}\\
  29                 & || \ldots\\
  30                 & || {\normalsize $\uparrow$}\\
  31                 & || stack\\
  32                 & || {\normalsize $\uparrow$}\\
  33                 & || tasks \\
  34                 & |[descr]| {\rm low addresses}\\
  35         };
  36         \matrix (heap) [right=of main,memory,yshift=2em] {
  37                 & || tree\textsubscript{0}\\
  38                 & || tree\textsubscript{1}\\
  39                 & || tree\textsubscript{\ldots}\\
  40                 & || tree\textsubscript{n}\\
  41         };
  42         \matrix (global) [left=of main,memory,yshift=2em] {
  43                 & || task\textsubscript{n}\\
  44                 & || task\textsubscript{\ldots}\\
  45                 & || task\textsubscript{1}\\
  46                 & || task\textsubscript{0}\\
  47         };
  48         \draw[dashed] (main-2-2.north east) -- (heap-1-2.north west);
  49         \draw[dashed] (main-3-2.south east) -- (heap-4-2.south west);
  50
  51         \draw[dashed] (main-7-2.north west) -- (global-1-2.north east);
  52         \draw[dashed] (main-8-2.south west) -- (global-4-2.south east);
  53
  54 %       \node (tree) [right=of heap] {
  55 %\begin{lstlisting}
  56 %struct TaskTree {
  57 %       enum BCTaskType_c task_type;
  58 %       bool trash;
  59 %       uint16_t refresh_min;
  60 %       uint16_t refresh_max;
  61 %       struct TaskTree *parent;
  62 %       union {
  63 %               ...
  64 %               uint16_t readd;
  65 %               ...
  66 %               struct {
  67 %                       struct TaskTree *lhs;
  68 %                       struct TaskTree *rhs;
  69 %               } tand;
  70 %               ...
  71 %       } data;\end{lstlisting}
  72 %       };
  73 %
  74 %       \draw[dashed] (tree.north west) -- (heap-1-2.north east);
  75 %       \draw[dashed] (tree.south west) -- (heap-1-2.south east);
  76 \end{tikzpicture}
  77 \end{document}