lib/tdb2/test/layout.h

   1 #ifndef TDB2_TEST_LAYOUT_H
   2 #define TDB2_TEST_LAYOUT_H
   3 #include <ccan/tdb2/private.h>
   4
   5 struct tdb_layout *new_tdb_layout(const char *filename);
   6 void tdb_layout_add_freetable(struct tdb_layout *layout);
   7 void tdb_layout_add_free(struct tdb_layout *layout, tdb_len_t len,
   8                          unsigned ftable);
   9 void tdb_layout_add_used(struct tdb_layout *layout,
  10                          TDB_DATA key, TDB_DATA data,
  11                          tdb_len_t extra);
  12 #if 0 /* FIXME: Allow allocation of subtables */
  13 void tdb_layout_add_hashtable(struct tdb_layout *layout,
  14                               int htable_parent, /* -1 == toplevel */
  15                               unsigned int bucket,
  16                               tdb_len_t extra);
  17 #endif
  18 struct tdb_context *tdb_layout_get(struct tdb_layout *layout);
  19 void tdb_layout_free(struct tdb_layout *layout);
  20
  21 enum layout_type {
  22         FREETABLE, FREE, DATA, HASHTABLE,
  23 };
  24
  25 /* Shared by all union members. */
  26 struct tle_base {
  27         enum layout_type type;
  28         tdb_off_t off;
  29 };
  30
  31 struct tle_freetable {
  32         struct tle_base base;
  33 };
  34
  35 struct tle_free {
  36         struct tle_base base;
  37         tdb_len_t len;
  38         unsigned ftable_num;
  39 };
  40
  41 struct tle_used {
  42         struct tle_base base;
  43         TDB_DATA key;
  44         TDB_DATA data;
  45         tdb_len_t extra;
  46 };
  47
  48 struct tle_hashtable {
  49         struct tle_base base;
  50         int parent;
  51         unsigned int bucket;
  52         tdb_len_t extra;
  53 };
  54
  55 union tdb_layout_elem {
  56         struct tle_base base;
  57         struct tle_freetable ftable;
  58         struct tle_free free;
  59         struct tle_used used;
  60         struct tle_hashtable hashtable;
  61 };
  62
  63 struct tdb_layout {
  64         const char *filename;
  65         unsigned int num_elems;
  66         union tdb_layout_elem *elem;
  67 };
  68 #endif /* TDB2_TEST_LAYOUT_H */