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

   1 #include "ntdb-source.h"
   2 #include "tap-interface.h"
   3 #include "logging.h"
   4
   5 static bool empty_freetable(struct ntdb_context *ntdb)
   6 {
   7         struct ntdb_freetable ftab;
   8         unsigned int i;
   9
  10         /* Now, free table should be completely exhausted in zone 0 */
  11         if (ntdb_read_convert(ntdb, ntdb->ftable_off, &ftab, sizeof(ftab)) != 0)
  12                 abort();
  13
  14         for (i = 0; i < sizeof(ftab.buckets)/sizeof(ftab.buckets[0]); i++) {
  15                 if (ftab.buckets[i])
  16                         return false;
  17         }
  18         return true;
  19 }
  20
  21
  22 int main(int argc, char *argv[])
  23 {
  24         unsigned int i, j;
  25         struct ntdb_context *ntdb;
  26         int flags[] = { NTDB_INTERNAL, NTDB_DEFAULT, NTDB_NOMMAP,
  27                         NTDB_INTERNAL|NTDB_CONVERT, NTDB_CONVERT,
  28                         NTDB_NOMMAP|NTDB_CONVERT };
  29
  30         plan_tests(sizeof(flags) / sizeof(flags[0]) * 7 + 1);
  31
  32         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  33                 NTDB_DATA k, d;
  34                 uint64_t size;
  35                 bool was_empty = false;
  36
  37                 k.dptr = (void *)&j;
  38                 k.dsize = sizeof(j);
  39
  40                 ntdb = ntdb_open("run-30-exhaust-before-expand.ntdb", flags[i],
  41                                O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
  42                 ok1(ntdb);
  43                 if (!ntdb)
  44                         continue;
  45
  46                 ok1(ntdb_check(ntdb, NULL, NULL) == 0);
  47                 /* There's one empty record in initial db. */
  48                 ok1(!empty_freetable(ntdb));
  49
  50                 size = ntdb->file->map_size;
  51
  52                 /* Create one record to chew up most space. */
  53                 d.dsize = size - NEW_DATABASE_HDR_SIZE(ntdb->hash_bits) - 32;
  54                 d.dptr = calloc(d.dsize, 1);
  55                 j = 0;
  56                 ok1(ntdb_store(ntdb, k, d, NTDB_INSERT) == 0);
  57                 ok1(ntdb->file->map_size == size);
  58                 free(d.dptr);
  59
  60                 /* Now insert minimal-length records until we expand. */
  61                 for (j = 1; ntdb->file->map_size == size; j++) {
  62                         was_empty = empty_freetable(ntdb);
  63                         if (ntdb_store(ntdb, k, k, NTDB_INSERT) != 0)
  64                                 err(1, "Failed to store record %i", j);
  65                 }
  66
  67                 /* Would have been empty before expansion, but no longer. */
  68                 ok1(was_empty);
  69                 ok1(!empty_freetable(ntdb));
  70                 ntdb_close(ntdb);
  71         }
  72
  73         ok1(tap_log_messages == 0);
  74         return exit_status();
  75 }