--- /dev/null
+#include <ccan/tdb2/tdb.c>
+#include <ccan/tdb2/free.c>
+#include <ccan/tdb2/lock.c>
+#include <ccan/tdb2/io.c>
+#include <ccan/tdb2/hash.c>
+#include <ccan/tdb2/check.c>
+#include <ccan/tap/tap.h>
+#include "logging.h"
+
+static uint64_t myhash(const void *key, size_t len, uint64_t seed, void *priv)
+{
+ return *(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 },
+ .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) != 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) != 0);
+ /* 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) != 0);
+ /* 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