int _ol_set_bucket_no_incr(ol_database *db, ol_bucket *bucket, uint32_t hash) {
/* TODO: error codes? */
unsigned int index = _ol_calc_idx(db->cur_ht_size, hash);
if (db->hashes[index] != NULL) {
db->meta->key_collisions++;
ol_bucket *tmp_bucket = db->hashes[index];
tmp_bucket = _ol_get_last_bucket_in_slot(tmp_bucket);
tmp_bucket->next = bucket;
} else {
db->hashes[index] = bucket;
}
if (db->is_enabled(OL_F_SPLAYTREE, &db->feature_set)) {
/* Put the bucket into the tree */
ol_splay_tree_node *node = NULL;
node = ols_insert(db->tree, bucket->key, bucket->klen, bucket);
/* Make sure the bucket can reference the node. */
bucket->node = node;
}
return 0;
}
ol_transaction *olt_begin(ol_database *db) {
char *name = NULL;
ol_transaction *new_transaction = NULL;
check(db != NULL, "No database specified in transaction begin.");
check(db->cur_transactions != NULL, "No transaction tree.");
/* We initialize on the stack because tx_id is a const parameter. */
ol_transaction stack_tx = {
.tx_id = global_transaction_id,
.dirty = 0,
.parent_db = db,
.transaction_db = NULL
};
/* Setup a ".../tx/" directory for our transaction databases. */
char new_path[PATH_LENGTH] = {0};
_tx_directory(new_path, db);
/* Convert our integer tx_id into a string */
name = tx_to_str(stack_tx.tx_id);
check(name != NULL, "Could not convert tx_id to str.");
/* Make sure implicit transactions is turned OFF, because otherwise we'll
* get endless recursion. Wooo! */
ol_feature_flags flags = OL_F_APPENDONLY | OL_F_SPLAYTREE | OL_F_LZ4 | OL_F_DISABLE_TX;
stack_tx.transaction_db = ol_open(new_path, name, flags);
stack_tx.transaction_db->rcrd_cnt = stack_tx.parent_db->rcrd_cnt;
check(stack_tx.transaction_db != NULL, "Could not open transaction database.");
/* Copy the stack thing into the heap thing. */
new_transaction = malloc(sizeof(ol_transaction));
check_mem(new_transaction);
memcpy(new_transaction, &stack_tx, sizeof(ol_transaction));
free(name);
ols_insert(db->cur_transactions,
stack_tx.transaction_db->name,
strnlen(stack_tx.transaction_db->name, DB_NAME_SIZE),
new_transaction
);
global_transaction_id++;
return new_transaction;
error:
free(new_transaction);
free(name);
return NULL;
}
static void _olt_cleanup_common(ol_transaction *tx, char *values_filename, char *tx_aol_filename) {
/* Yeah, come at me. */
debug("Unlinking values file for transaction, %s", values_filename);
unlink(values_filename);
debug("Unlinking aol file for transaction, %s", tx_aol_filename);
unlink(tx_aol_filename);
free(tx);
}
