git.ozlabs.org Git - ccan/blob - ccan/tdb2/test/run-traverse.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/tdb2/transaction.c>
   9 #include <ccan/tap/tap.h>
  10 #include "logging.h"
  11
  12 #define NUM_RECORDS 1000
  13
  14 /* We use the same seed which we saw a failure on. */
  15 static uint64_t fixedhash(const void *key, size_t len, uint64_t seed, void *p)
  16 {
  17         return hash64_stable((const unsigned char *)key, len,
  18                              *(uint64_t *)p);
  19 }
  20
  21 static bool store_records(struct tdb_context *tdb)
  22 {
  23         int i;
  24         struct tdb_data key = { (unsigned char *)&i, sizeof(i) };
  25         struct tdb_data data = { (unsigned char *)&i, sizeof(i) };
  26
  27         for (i = 0; i < NUM_RECORDS; i++)
  28                 if (tdb_store(tdb, key, data, TDB_REPLACE) != 0)
  29                         return false;
  30         return true;
  31 }
  32
  33 struct trav_data {
  34         unsigned int calls, call_limit;
  35         int low, high;
  36         bool mismatch;
  37         bool delete;
  38         enum TDB_ERROR delete_error;
  39 };
  40
  41 static int trav(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
  42                 struct trav_data *td)
  43 {
  44         int val;
  45
  46         td->calls++;
  47         if (key.dsize != sizeof(val) || dbuf.dsize != sizeof(val)
  48             || memcmp(key.dptr, dbuf.dptr, key.dsize) != 0) {
  49                 td->mismatch = true;
  50                 return -1;
  51         }
  52         memcpy(&val, dbuf.dptr, dbuf.dsize);
  53         if (val < td->low)
  54                 td->low = val;
  55         if (val > td->high)
  56                 td->high = val;
  57
  58         if (td->delete) {
  59                 td->delete_error = tdb_delete(tdb, key);
  60                 if (td->delete_error != TDB_SUCCESS) {
  61                         return -1;
  62                 }
  63         }
  64
  65         if (td->calls == td->call_limit)
  66                 return 1;
  67         return 0;
  68 }
  69
  70 struct trav_grow_data {
  71         unsigned int calls;
  72         unsigned int num_large;
  73         bool mismatch;
  74         enum TDB_ERROR error;
  75 };
  76
  77 static int trav_grow(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
  78                      struct trav_grow_data *tgd)
  79 {
  80         int val;
  81         unsigned char buffer[128] = { 0 };
  82
  83         tgd->calls++;
  84         if (key.dsize != sizeof(val) || dbuf.dsize < sizeof(val)
  85             || memcmp(key.dptr, dbuf.dptr, key.dsize) != 0) {
  86                 tgd->mismatch = true;
  87                 return -1;
  88         }
  89
  90         if (dbuf.dsize > sizeof(val))
  91                 /* We must have seen this before! */
  92                 tgd->num_large++;
  93
  94         /* Make a big difference to the database. */
  95         dbuf.dptr = buffer;
  96         dbuf.dsize = sizeof(buffer);
  97         tgd->error = tdb_append(tdb, key, dbuf);
  98         if (tgd->error != TDB_SUCCESS) {
  99                 return -1;
 100         }
 101         return 0;
 102 }
 103
 104 int main(int argc, char *argv[])
 105 {
 106         unsigned int i;
 107         int num;
 108         struct trav_data td;
 109         struct trav_grow_data tgd;
 110         struct tdb_context *tdb;
 111         uint64_t seed = 16014841315512641303ULL;
 112         int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP,
 113                         TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT,
 114                         TDB_NOMMAP|TDB_CONVERT };
 115         union tdb_attribute hattr = { .hash = { .base = { TDB_ATTRIBUTE_HASH },
 116                                                 .hash_fn = fixedhash,
 117                                                 .hash_private = &seed } };
 118
 119         hattr.base.next = &tap_log_attr;
 120
 121         plan_tests(sizeof(flags) / sizeof(flags[0]) * 32 + 1);
 122         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
 123                 tdb = tdb_open("run-traverse.tdb", flags[i],
 124                                O_RDWR|O_CREAT|O_TRUNC, 0600, &hattr);
 125                 ok1(tdb);
 126                 if (!tdb)
 127                         continue;
 128
 129                 ok1(tdb_traverse(tdb, NULL, NULL) == 0);
 130
 131                 ok1(store_records(tdb));
 132                 num = tdb_traverse(tdb, NULL, NULL);
 133                 ok1(num == NUM_RECORDS);
 134
 135                 /* Full traverse. */
 136                 td.calls = 0;
 137                 td.call_limit = UINT_MAX;
 138                 td.low = INT_MAX;
 139                 td.high = INT_MIN;
 140                 td.mismatch = false;
 141                 td.delete = false;
 142
 143                 num = tdb_traverse(tdb, trav, &td);
 144                 ok1(num == NUM_RECORDS);
 145                 ok1(!td.mismatch);
 146                 ok1(td.calls == NUM_RECORDS);
 147                 ok1(td.low == 0);
 148                 ok1(td.high == NUM_RECORDS-1);
 149
 150                 /* Short traverse. */
 151                 td.calls = 0;
 152                 td.call_limit = NUM_RECORDS / 2;
 153                 td.low = INT_MAX;
 154                 td.high = INT_MIN;
 155                 td.mismatch = false;
 156                 td.delete = false;
 157
 158                 num = tdb_traverse(tdb, trav, &td);
 159                 ok1(num == NUM_RECORDS / 2);
 160                 ok1(!td.mismatch);
 161                 ok1(td.calls == NUM_RECORDS / 2);
 162                 ok1(td.low <= NUM_RECORDS / 2);
 163                 ok1(td.high > NUM_RECORDS / 2);
 164                 ok1(tdb_check(tdb, NULL, NULL) == 0);
 165                 ok1(tap_log_messages == 0);
 166
 167                 /* Deleting traverse (delete everything). */
 168                 td.calls = 0;
 169                 td.call_limit = UINT_MAX;
 170                 td.low = INT_MAX;
 171                 td.high = INT_MIN;
 172                 td.mismatch = false;
 173                 td.delete = true;
 174                 td.delete_error = TDB_SUCCESS;
 175                 num = tdb_traverse(tdb, trav, &td);
 176                 ok1(num == NUM_RECORDS);
 177                 ok1(td.delete_error == TDB_SUCCESS);
 178                 ok1(!td.mismatch);
 179                 ok1(td.calls == NUM_RECORDS);
 180                 ok1(td.low == 0);
 181                 ok1(td.high == NUM_RECORDS - 1);
 182                 ok1(tdb_check(tdb, NULL, NULL) == 0);
 183
 184                 /* Now it's empty! */
 185                 ok1(tdb_traverse(tdb, NULL, NULL) == 0);
 186
 187                 /* Re-add. */
 188                 ok1(store_records(tdb));
 189                 ok1(tdb_traverse(tdb, NULL, NULL) == NUM_RECORDS);
 190                 ok1(tdb_check(tdb, NULL, NULL) == 0);
 191
 192                 /* Grow.  This will cause us to be reshuffled. */
 193                 tgd.calls = 0;
 194                 tgd.num_large = 0;
 195                 tgd.mismatch = false;
 196                 tgd.error = TDB_SUCCESS;
 197                 ok1(tdb_traverse(tdb, trav_grow, &tgd) > 1);
 198                 ok1(tgd.error == 0);
 199                 ok1(!tgd.mismatch);
 200                 ok1(tdb_check(tdb, NULL, NULL) == 0);
 201                 ok1(tgd.num_large < tgd.calls);
 202                 diag("growing db: %u calls, %u repeats",
 203                      tgd.calls, tgd.num_large);
 204
 205                 tdb_close(tdb);
 206         }
 207
 208         ok1(tap_log_messages == 0);
 209         return exit_status();
 210 }