lib/tdb2/test/run-30-exhaust-before-expand.c

   1 #include <ccan/tdb2/tdb.c>
   2 #include <ccan/tdb2/open.c>
   3 #include <ccan/tdb2/free.c>
   4 #include <ccan/tdb2/lock.c>
   5 #include <ccan/tdb2/io.c>
   6 #include <ccan/tdb2/check.c>
   7 #include <ccan/tdb2/hash.c>
   8 #include <ccan/tdb2/transaction.c>
   9 #include <ccan/tap/tap.h>
  10 #include <err.h>
  11 #include "logging.h"
  12
  13 static bool empty_freetable(struct tdb_context *tdb)
  14 {
  15         struct tdb_freetable ftab;
  16         unsigned int i;
  17
  18         /* Now, free table should be completely exhausted in zone 0 */
  19         if (tdb_read_convert(tdb, tdb->ftable_off, &ftab, sizeof(ftab)) != 0)
  20                 abort();
  21
  22         for (i = 0; i < sizeof(ftab.buckets)/sizeof(ftab.buckets[0]); i++) {
  23                 if (ftab.buckets[i])
  24                         return false;
  25         }
  26         return true;
  27 }
  28
  29
  30 int main(int argc, char *argv[])
  31 {
  32         unsigned int i, j;
  33         struct tdb_context *tdb;
  34         int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP,
  35                         TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT,
  36                         TDB_NOMMAP|TDB_CONVERT };
  37
  38         plan_tests(sizeof(flags) / sizeof(flags[0]) * 9 + 1);
  39
  40         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  41                 TDB_DATA k;
  42                 uint64_t size;
  43                 bool was_empty = false;
  44
  45                 k.dptr = (void *)&j;
  46                 k.dsize = sizeof(j);
  47
  48                 tdb = tdb_open("run-30-exhaust-before-expand.tdb", flags[i],
  49                                O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
  50                 ok1(tdb);
  51                 if (!tdb)
  52                         continue;
  53
  54                 ok1(empty_freetable(tdb));
  55                 /* Need some hash lock for expand. */
  56                 ok1(tdb_lock_hashes(tdb, 0, 1, F_WRLCK, TDB_LOCK_WAIT) == 0);
  57                 /* Create some free space. */
  58                 ok1(tdb_expand(tdb, 1) == 0);
  59                 ok1(tdb_unlock_hashes(tdb, 0, 1, F_WRLCK) == 0);
  60                 ok1(tdb_check(tdb, NULL, NULL) == 0);
  61                 ok1(!empty_freetable(tdb));
  62
  63                 size = tdb->file->map_size;
  64                 /* Insert minimal-length records until we expand. */
  65                 for (j = 0; tdb->file->map_size == size; j++) {
  66                         was_empty = empty_freetable(tdb);
  67                         if (tdb_store(tdb, k, k, TDB_INSERT) != 0)
  68                                 err(1, "Failed to store record %i", j);
  69                 }
  70
  71                 /* Would have been empty before expansion, but no longer. */
  72                 ok1(was_empty);
  73                 ok1(!empty_freetable(tdb));
  74                 tdb_close(tdb);
  75         }
  76
  77         ok1(tap_log_messages == 0);
  78         return exit_status();
  79 }