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/tap/tap.h>
10 static uint64_t myhash(const void *key, size_t len, uint64_t seed, void *priv)
12 return *(uint64_t *)key;
15 static void add_bits(uint64_t *val, unsigned new, unsigned new_bits,
19 *val |= ((uint64_t)new << (64 - *done));
22 static uint64_t make_key(unsigned topgroup, unsigned topbucket,
23 unsigned subgroup1, unsigned subbucket1,
24 unsigned subgroup2, unsigned subbucket2)
29 add_bits(&key, topgroup, TDB_TOPLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
31 add_bits(&key, topbucket, TDB_HASH_GROUP_BITS, &done);
32 add_bits(&key, subgroup1, TDB_SUBLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
34 add_bits(&key, subbucket1, TDB_HASH_GROUP_BITS, &done);
35 add_bits(&key, subgroup2, TDB_SUBLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
37 add_bits(&key, subbucket2, TDB_HASH_GROUP_BITS, &done);
41 int main(int argc, char *argv[])
44 struct tdb_context *tdb;
46 struct tdb_used_record rec;
47 struct tdb_data key = { (unsigned char *)&kdata, sizeof(kdata) };
48 struct tdb_data dbuf = { (unsigned char *)&kdata, sizeof(kdata) };
49 union tdb_attribute hattr = { .hash = { .base = { TDB_ATTRIBUTE_HASH },
50 .hash_fn = myhash } };
51 int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP,
52 TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT,
53 TDB_NOMMAP|TDB_CONVERT,
56 hattr.base.next = &tap_log_attr;
58 plan_tests(sizeof(flags) / sizeof(flags[0])
59 * (9 + (20 + 2 * ((1 << TDB_HASH_GROUP_BITS) - 2))
60 * (1 << TDB_HASH_GROUP_BITS)) + 1);
61 for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
64 tdb = tdb_open("run-04-basichash.tdb", flags[i],
65 O_RDWR|O_CREAT|O_TRUNC, 0600, &hattr);
71 for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) {
72 kdata = make_key(0, j, 0, 0, 0, 0);
73 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
75 ok1(tdb_check(tdb, NULL, NULL) == 0);
77 /* Check first still exists. */
78 kdata = make_key(0, 0, 0, 0, 0, 0);
79 ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL) != 0);
80 /* Should have created correct hash. */
81 ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
82 /* Should have located space in group 0, bucket 0. */
83 ok1(h.group_start == offsetof(struct tdb_header, hashtable));
84 ok1(h.home_bucket == 0);
85 ok1(h.found_bucket == 0);
86 ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS);
87 /* Entire group should be full! */
88 for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++)
91 ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
94 /* Now, add one more to each should expand (that) bucket. */
95 for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) {
97 kdata = make_key(0, j, 0, 1, 0, 0);
98 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
99 ok1(tdb_check(tdb, NULL, NULL) == 0);
101 ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL));
102 /* Should have created correct hash. */
103 ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
104 /* Should have moved to subhash */
105 ok1(h.group_start >= sizeof(struct tdb_header));
106 ok1(h.home_bucket == 1);
107 ok1(h.found_bucket == 1);
108 ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS
109 + TDB_SUBLEVEL_HASH_BITS);
110 ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
113 /* Keep adding, make it expand again. */
114 for (k = 2; k < (1 << TDB_HASH_GROUP_BITS); k++) {
115 kdata = make_key(0, j, 0, k, 0, 0);
116 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
117 ok1(tdb_check(tdb, NULL, NULL) == 0);
120 /* This should tip it over to sub-sub-hash. */
121 kdata = make_key(0, j, 0, 0, 0, 1);
122 ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
123 ok1(tdb_check(tdb, NULL, NULL) == 0);
125 ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL));
126 /* Should have created correct hash. */
127 ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
128 /* Should have moved to subhash */
129 ok1(h.group_start >= sizeof(struct tdb_header));
130 ok1(h.home_bucket == 1);
131 ok1(h.found_bucket == 1);
132 ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS
133 + TDB_SUBLEVEL_HASH_BITS + TDB_SUBLEVEL_HASH_BITS);
134 ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
140 ok1(tap_log_messages == 0);
141 return exit_status();