usr/src/lib/libsqlite/tool/memleak2.awk

   1
   2 #pragma ident   "%Z%%M% %I%     %E% SMI"
   3
   4 # This AWK script reads the output of testfixture when compiled for memory
   5 # debugging.  It generates SQL commands that can be fed into an sqlite
   6 # instance to determine what memory is never freed.  A typical usage would
   7 # be as follows:
   8 #
   9 #     make -f memleak.mk fulltest 2>mem.out
  10 #     awk -f ../sqlite/tool/memleak2.awk mem.out | ./sqlite :memory:
  11 #
  12 # The job performed by this script is the same as that done by memleak.awk.
  13 # The difference is that this script uses much less memory when the size
  14 # of the mem.out file is huge.
  15 #
  16 BEGIN {
  17   print "CREATE TABLE mem(loc INTEGER PRIMARY KEY, src);"
  18 }
  19 /[0-9]+ malloc / {
  20   print "INSERT INTO mem VALUES(" strtonum($6) ",'" $0 "');"
  21 }
  22 /[0-9]+ realloc / {
  23   print "INSERT INTO mem VALUES(" strtonum($10) \
  24            ",(SELECT src FROM mem WHERE loc=" strtonum($8) "));"
  25   print "DELETE FROM mem WHERE loc=" strtonum($8) ";"
  26 }
  27 /[0-9]+ free / {
  28   print "DELETE FROM mem WHERE loc=" strtonum($6) ";"
  29 }
  30 END {
  31   print "SELECT src FROM mem;"
  32 }