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/hash.c>
7 #include <ccan/tdb2/transaction.c>
8 #include <ccan/tdb2/check.c>
9 #include <ccan/tap/tap.h>
12 static uint64_t myhash(const void *key, size_t len, uint64_t seed, void *priv)
14 return *(uint64_t *)key;
17 static void add_bits(uint64_t *val, unsigned new, unsigned new_bits,
21 *val |= ((uint64_t)new << (64 - *done));
24 static uint64_t make_key(unsigned topgroup, unsigned topbucket,
25 unsigned subgroup1, unsigned subbucket1,
26 unsigned subgroup2, unsigned subbucket2)
31 add_bits(&key, topgroup, TDB_TOPLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
33 add_bits(&key, topbucket, TDB_HASH_GROUP_BITS, &done);
34 add_bits(&key, subgroup1, TDB_SUBLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
36 add_bits(&key, subbucket1, TDB_HASH_GROUP_BITS, &done);
37 add_bits(&key, subgroup2, TDB_SUBLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
39 add_bits(&key, subbucket2, TDB_HASH_GROUP_BITS, &done);
43 int main(int argc, char *argv[])
46 struct tdb_context *tdb;
48 struct tdb_used_record rec;
49 struct tdb_data key = { (unsigned char *)&kdata, sizeof(kdata) };
50 struct tdb_data dbuf = { (unsigned char *)&kdata, sizeof(kdata) };
51 union tdb_attribute hattr = { .hash = { .base = { TDB_ATTRIBUTE_HASH },
52 .hash_fn = myhash } };
53 int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP,
54 TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT,
55 TDB_NOMMAP|TDB_CONVERT,
58 hattr.base.next = &tap_log_attr;
60 plan_tests(sizeof(flags) / sizeof(flags[0])
61 * (9 + (20 + 2 * ((1 << TDB_HASH_GROUP_BITS) - 2))
62 * (1 << TDB_HASH_GROUP_BITS)) + 1);
63 for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
66 tdb = tdb_open("run-04-basichash.tdb", flags[i],
67 O_RDWR|O_CREAT|O_TRUNC, 0600, &hattr);
73 for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) {
74 kdata = make_key(0, j, 0, 0, 0, 0);
75 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
77 ok1(tdb_check(tdb, NULL, NULL) == 0);
79 /* Check first still exists. */
80 kdata = make_key(0, 0, 0, 0, 0, 0);
81 ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL) != 0);
82 /* Should have created correct hash. */
83 ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
84 /* Should have located space in group 0, bucket 0. */
85 ok1(h.group_start == offsetof(struct tdb_header, hashtable));
86 ok1(h.home_bucket == 0);
87 ok1(h.found_bucket == 0);
88 ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS);
89 /* Entire group should be full! */
90 for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++)
93 ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
96 /* Now, add one more to each should expand (that) bucket. */
97 for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) {
99 kdata = make_key(0, j, 0, 1, 0, 0);
100 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
101 ok1(tdb_check(tdb, NULL, NULL) == 0);
103 ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL));
104 /* Should have created correct hash. */
105 ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
106 /* Should have moved to subhash */
107 ok1(h.group_start >= sizeof(struct tdb_header));
108 ok1(h.home_bucket == 1);
109 ok1(h.found_bucket == 1);
110 ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS
111 + TDB_SUBLEVEL_HASH_BITS);
112 ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
115 /* Keep adding, make it expand again. */
116 for (k = 2; k < (1 << TDB_HASH_GROUP_BITS); k++) {
117 kdata = make_key(0, j, 0, k, 0, 0);
118 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
119 ok1(tdb_check(tdb, NULL, NULL) == 0);
122 /* This should tip it over to sub-sub-hash. */
123 kdata = make_key(0, j, 0, 0, 0, 1);
124 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
125 ok1(tdb_check(tdb, NULL, NULL) == 0);
127 ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL));
128 /* Should have created correct hash. */
129 ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
130 /* Should have moved to subhash */
131 ok1(h.group_start >= sizeof(struct tdb_header));
132 ok1(h.home_bucket == 1);
133 ok1(h.found_bucket == 1);
134 ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS
135 + TDB_SUBLEVEL_HASH_BITS + TDB_SUBLEVEL_HASH_BITS);
136 ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
142 ok1(tap_log_messages == 0);
143 return exit_status();