git.ozlabs.org Git - ccan/blob - ccan/tdb2/test/run-firstkey-nextkey.c

   1 #include <ccan/tdb2/tdb.c>
   2 #include <ccan/tdb2/free.c>
   3 #include <ccan/tdb2/lock.c>
   4 #include <ccan/tdb2/io.c>
   5 #include <ccan/tdb2/hash.c>
   6 #include <ccan/tdb2/check.c>
   7 #include <ccan/tdb2/traverse.c>
   8 #include <ccan/tap/tap.h>
   9 #include "logging.h"
  10
  11 #define NUM_RECORDS 1000
  12
  13 static bool store_records(struct tdb_context *tdb)
  14 {
  15         int i;
  16         struct tdb_data key = { (unsigned char *)&i, sizeof(i) };
  17         struct tdb_data data = { (unsigned char *)&i, sizeof(i) };
  18
  19         for (i = 0; i < NUM_RECORDS; i++)
  20                 if (tdb_store(tdb, key, data, TDB_REPLACE) != 0)
  21                         return false;
  22         return true;
  23 }
  24
  25 struct trav_data {
  26         unsigned int records[NUM_RECORDS];
  27         unsigned int calls;
  28 };
  29
  30 static int trav(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf, void *p)
  31 {
  32         struct trav_data *td = p;
  33         int val;
  34
  35         memcpy(&val, dbuf.dptr, dbuf.dsize);
  36         td->records[td->calls++] = val;
  37         return 0;
  38 }
  39
  40 int main(int argc, char *argv[])
  41 {
  42         unsigned int i, j;
  43         int num;
  44         struct trav_data td;
  45         TDB_DATA k, k2;
  46         struct tdb_context *tdb;
  47         int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP,
  48                         TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT,
  49                         TDB_NOMMAP|TDB_CONVERT };
  50
  51         plan_tests(sizeof(flags) / sizeof(flags[0])
  52                    * (NUM_RECORDS*4 + (NUM_RECORDS-1)*2 + 20) + 1);
  53         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  54                 tdb = tdb_open("run-traverse.tdb", flags[i],
  55                                O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
  56                 ok1(tdb);
  57                 if (!tdb)
  58                         continue;
  59
  60                 ok1(tdb_firstkey(tdb).dptr == NULL);
  61                 ok1(tdb_error(tdb) == TDB_SUCCESS);
  62
  63                 /* One entry... */
  64                 k.dptr = (unsigned char *)&num;
  65                 k.dsize = sizeof(num);
  66                 num = 0;
  67                 ok1(tdb_store(tdb, k, k, TDB_INSERT) == 0);
  68                 k = tdb_firstkey(tdb);
  69                 ok1(k.dsize == sizeof(num));
  70                 ok1(memcmp(k.dptr, &num, sizeof(num)) == 0);
  71                 k2 = tdb_nextkey(tdb, k);
  72                 ok1(k2.dsize == 0 && k2.dptr == NULL);
  73                 free(k.dptr);
  74
  75                 /* Two entries. */
  76                 k.dptr = (unsigned char *)&num;
  77                 k.dsize = sizeof(num);
  78                 num = 1;
  79                 ok1(tdb_store(tdb, k, k, TDB_INSERT) == 0);
  80                 k = tdb_firstkey(tdb);
  81                 ok1(k.dsize == sizeof(num));
  82                 memcpy(&num, k.dptr, sizeof(num));
  83                 ok1(num == 0 || num == 1);
  84                 k2 = tdb_nextkey(tdb, k);
  85                 ok1(k2.dsize == sizeof(j));
  86                 free(k.dptr);
  87                 memcpy(&j, k2.dptr, sizeof(j));
  88                 ok1(j == 0 || j == 1);
  89                 ok1(j != num);
  90                 k = tdb_nextkey(tdb, k2);
  91                 ok1(k.dsize == 0 && k.dptr == NULL);
  92                 free(k2.dptr);
  93
  94                 /* Clean up. */
  95                 k.dptr = (unsigned char *)&num;
  96                 k.dsize = sizeof(num);
  97                 num = 0;
  98                 ok1(tdb_delete(tdb, k) == 0);
  99                 num = 1;
 100                 ok1(tdb_delete(tdb, k) == 0);
 101
 102                 /* Now lots of records. */
 103                 ok1(store_records(tdb));
 104                 td.calls = 0;
 105
 106                 num = tdb_traverse_read(tdb, trav, &td);
 107                 ok1(num == NUM_RECORDS);
 108                 ok1(td.calls == NUM_RECORDS);
 109
 110                 /* Simple loop should match tdb_traverse_read */
 111                 for (j = 0, k = tdb_firstkey(tdb); j < td.calls; j++) {
 112                         int val;
 113
 114                         ok1(k.dsize == sizeof(val));
 115                         memcpy(&val, k.dptr, k.dsize);
 116                         ok1(td.records[j] == val);
 117                         k2 = tdb_nextkey(tdb, k);
 118                         free(k.dptr);
 119                         k = k2;
 120                 }
 121
 122                 /* But arbitary orderings should work too. */
 123                 for (j = td.calls-1; j > 0; j--) {
 124                         k.dptr = (unsigned char *)&td.records[j-1];
 125                         k.dsize = sizeof(td.records[j-1]);
 126                         k = tdb_nextkey(tdb, k);
 127                         ok1(k.dsize == sizeof(td.records[j]));
 128                         ok1(memcmp(k.dptr, &td.records[j], k.dsize) == 0);
 129                         free(k.dptr);
 130                 }
 131
 132                 /* Even delete should work. */
 133                 for (j = 0, k = tdb_firstkey(tdb); k.dptr; j++) {
 134                         ok1(k.dsize == 4);
 135                         ok1(tdb_delete(tdb, k) == 0);
 136                         k2 = tdb_nextkey(tdb, k);
 137                         free(k.dptr);
 138                         k = k2;
 139                 }
 140
 141                 diag("delete using first/nextkey gave %u of %u records",
 142                      j, NUM_RECORDS);
 143                 ok1(j == NUM_RECORDS);
 144                 tdb_close(tdb);
 145         }
 146
 147         ok1(tap_log_messages == 0);
 148         return exit_status();
 149 }