+++ /dev/null
-#include "tdb2-source.h"
-#include <ccan/tap/tap.h>
-#include "logging.h"
-
-static uint64_t myhash(const void *key, size_t len, uint64_t seed, void *priv)
-{
- return *(const uint64_t *)key;
-}
-
-static void add_bits(uint64_t *val, unsigned new, unsigned new_bits,
- unsigned *done)
-{
- *done += new_bits;
- *val |= ((uint64_t)new << (64 - *done));
-}
-
-static uint64_t make_key(unsigned topgroup, unsigned topbucket,
- unsigned subgroup1, unsigned subbucket1,
- unsigned subgroup2, unsigned subbucket2)
-{
- uint64_t key = 0;
- unsigned done = 0;
-
- add_bits(&key, topgroup, TDB_TOPLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
- &done);
- add_bits(&key, topbucket, TDB_HASH_GROUP_BITS, &done);
- add_bits(&key, subgroup1, TDB_SUBLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
- &done);
- add_bits(&key, subbucket1, TDB_HASH_GROUP_BITS, &done);
- add_bits(&key, subgroup2, TDB_SUBLEVEL_HASH_BITS - TDB_HASH_GROUP_BITS,
- &done);
- add_bits(&key, subbucket2, TDB_HASH_GROUP_BITS, &done);
- return key;
-}
-
-int main(int argc, char *argv[])
-{
- unsigned int i, j;
- struct tdb_context *tdb;
- uint64_t kdata;
- struct tdb_used_record rec;
- struct tdb_data key = { (unsigned char *)&kdata, sizeof(kdata) };
- struct tdb_data dbuf = { (unsigned char *)&kdata, sizeof(kdata) };
- union tdb_attribute hattr = { .hash = { .base = { TDB_ATTRIBUTE_HASH },
- .fn = myhash } };
- int flags[] = { TDB_INTERNAL, TDB_DEFAULT, TDB_NOMMAP,
- TDB_INTERNAL|TDB_CONVERT, TDB_CONVERT,
- TDB_NOMMAP|TDB_CONVERT,
- };
-
- hattr.base.next = &tap_log_attr;
-
- plan_tests(sizeof(flags) / sizeof(flags[0])
- * (9 + (20 + 2 * ((1 << TDB_HASH_GROUP_BITS) - 2))
- * (1 << TDB_HASH_GROUP_BITS)) + 1);
- for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
- struct hash_info h;
-
- tdb = tdb_open("run-20-growhash.tdb", flags[i],
- O_RDWR|O_CREAT|O_TRUNC, 0600, &hattr);
- ok1(tdb);
- if (!tdb)
- continue;
-
- /* Fill a group. */
- for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) {
- kdata = make_key(0, j, 0, 0, 0, 0);
- ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
- }
- ok1(tdb_check(tdb, NULL, NULL) == 0);
-
- /* Check first still exists. */
- kdata = make_key(0, 0, 0, 0, 0, 0);
- ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL) != 0);
- /* Should have created correct hash. */
- ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
- /* Should have located space in group 0, bucket 0. */
- ok1(h.group_start == offsetof(struct tdb_header, hashtable));
- ok1(h.home_bucket == 0);
- ok1(h.found_bucket == 0);
- ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS);
- /* Entire group should be full! */
- for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++)
- ok1(h.group[j] != 0);
-
- ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
- F_RDLCK) == 0);
-
- /* Now, add one more to each should expand (that) bucket. */
- for (j = 0; j < (1 << TDB_HASH_GROUP_BITS); j++) {
- unsigned int k;
- kdata = make_key(0, j, 0, 1, 0, 0);
- ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
- ok1(tdb_check(tdb, NULL, NULL) == 0);
-
- ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL));
- /* Should have created correct hash. */
- ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
- /* Should have moved to subhash */
- ok1(h.group_start >= sizeof(struct tdb_header));
- ok1(h.home_bucket == 1);
- ok1(h.found_bucket == 1);
- ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS
- + TDB_SUBLEVEL_HASH_BITS);
- ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
- F_RDLCK) == 0);
-
- /* Keep adding, make it expand again. */
- for (k = 2; k < (1 << TDB_HASH_GROUP_BITS); k++) {
- kdata = make_key(0, j, 0, k, 0, 0);
- ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
- ok1(tdb_check(tdb, NULL, NULL) == 0);
- }
-
- /* This should tip it over to sub-sub-hash. */
- kdata = make_key(0, j, 0, 0, 0, 1);
- ok1(tdb_store(tdb, key, dbuf, TDB_INSERT) == 0);
- ok1(tdb_check(tdb, NULL, NULL) == 0);
-
- ok1(find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL));
- /* Should have created correct hash. */
- ok1(h.h == tdb_hash(tdb, key.dptr, key.dsize));
- /* Should have moved to subhash */
- ok1(h.group_start >= sizeof(struct tdb_header));
- ok1(h.home_bucket == 1);
- ok1(h.found_bucket == 1);
- ok1(h.hash_used == TDB_TOPLEVEL_HASH_BITS
- + TDB_SUBLEVEL_HASH_BITS + TDB_SUBLEVEL_HASH_BITS);
- ok1(tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range,
- F_RDLCK) == 0);
- }
- tdb_close(tdb);
- }
-
- ok1(tap_log_messages == 0);
- return exit_status();
-}
projects / ccan / blobdiff