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#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-04-basichash.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();
}
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