malloc/mtrace.awk

   1 #
   2 #  Awk program to analyze mtrace.c output.
   3 #
   4 {
   5   if ($1 == "@") {
   6     where = " (" $2 ")"
   7     n = 3
   8   } else {
   9     where = ""
  10     n = 1
  11   }
  12   if ($n == "+") {
  13     if (allocated[$(n+1)] != "")
  14       print "+", $(n+1), "Alloc", NR, "duplicate:", allocated[$(n+1)], wherewas[$(n+1)], where;
  15     else {
  16       wherewas[$(n+1)] = where;
  17       allocated[$(n+1)] = $(n+2);
  18     }
  19   } else if ($n == "-") {
  20     if (allocated[$(n+1)] != "") {
  21       wherewas[$(n+1)] = "";
  22       allocated[$(n+1)] = "";
  23       if (allocated[$(n+1)] != "")
  24         print "DELETE FAILED", $(n+1), allocated[$(n+1)];
  25     } else
  26       print "-", $(n+1), "Free", NR, "was never alloc'd", where;
  27   } else if ($n == "<") {
  28     if (allocated[$(n+1)] != "") {
  29       wherewas[$(n+1)] = "";
  30       allocated[$(n+1)] = "";
  31     } else
  32       print "-", $(n+1), "Realloc", NR, "was never alloc'd", where;
  33   } else if ($n == ">") {
  34     if (allocated[$(n+1)] != "")
  35       print "+", $(n+1), "Realloc", NR, "duplicate:", allocated[$(n+1)], where;
  36     else {
  37       wherewas[$(n+1)] = $(n+2);
  38       allocated[$(n+1)] = $(n+2);
  39     }
  40   } else if ($n == "=") {
  41     # Ignore "= Start"
  42   } else if ($n == "!") {
  43     # Ignore failed realloc attempts for now
  44   }
  45 }
  46 END {
  47   for (x in allocated)
  48     if (allocated[x] != "")
  49       print "+", x, allocated[x], wherewas[x];
  50 }