Example #1
0
/**
 * Discard all data held in the database.
 *
 * @return TRUE if successful.
 */
gboolean
dbmw_clear(dbmw_t *dw)
{
	if (!dbmap_clear(dw->dm))
		return FALSE;

	dbmw_clear_cache(dw);
	dw->ioerr = FALSE;
	dw->count_needs_sync = FALSE;

	return TRUE;
}
Example #2
0
/**
 * Destroy the DBM wrapper, optionally closing the underlying DB map.
 */
void
dbmw_destroy(dbmw_t *dw, bool close_map)
{
	dbmw_check(dw);

	if (common_stats) {
		s_debug("DBMW destroying \"%s\" with %s back-end "
			"(read cache hits = %.2f%% on %s request%s, "
			"write cache hits = %.2f%% on %s request%s)",
			dw->name, dbmw_map_type(dw) == DBMAP_SDBM ? "sdbm" : "map",
			dw->r_hits * 100.0 / MAX(1, dw->r_access),
			uint64_to_string(dw->r_access), plural(dw->r_access),
			dw->w_hits * 100.0 / MAX(1, dw->w_access),
			uint64_to_string2(dw->w_access), plural(dw->w_access));
	}

	if (dbg_ds_debugging(dw->dbg, 1, DBG_DSF_DESTROY)) {
		dbg_ds_log(dw->dbg, dw, "%s: with %s back-end "
			"(read cache hits = %.2f%% on %s request%s, "
			"write cache hits = %.2f%% on %s request%s)",
			G_STRFUNC, dbmw_map_type(dw) == DBMAP_SDBM ? "sdbm" : "map",
			dw->r_hits * 100.0 / MAX(1, dw->r_access),
			uint64_to_string(dw->r_access), plural(dw->r_access),
			dw->w_hits * 100.0 / MAX(1, dw->w_access),
			uint64_to_string2(dw->w_access), plural(dw->w_access));
	}

	/*
	 * If we close the map and we're volatile, there's no need to flush
	 * the cache as the data is going to be gone soon anyway.
	 */

	if (!close_map || !dw->is_volatile) {
		dbmw_sync(dw, DBMW_SYNC_CACHE);
	}

	dbmw_clear_cache(dw);
	hash_list_free(&dw->keys);
	map_destroy(dw->values);

	if (dw->mb)
		pmsg_free(dw->mb);
	bstr_free(&dw->bs);

	if (close_map)
		dbmap_destroy(dw->dm);

	WFREE_TYPE_NULL(dw->dbmap_dbg);
	dw->magic = 0;
	WFREE(dw);
}
Example #3
0
/**
 * Copy all the data from one DBMW map to another, replacing values if the
 * destination is not empty and already holds some data.
 *
 * @return TRUE on success.
 */
gboolean
dbmw_copy(dbmw_t *from, dbmw_t *to)
{
	dbmw_check(from);
	dbmw_check(to);

	dbmw_sync(from, DBMW_SYNC_CACHE);
	dbmw_sync(to, DBMW_SYNC_CACHE);
	dbmw_clear_cache(to);

	/*
	 * Since ``from'' was sync'ed and the cache from ``to'' was cleared,
	 * we can ignore caches and handle the copy at the dbmap level.
	 */

	return dbmap_copy(from->dm, to->dm);
}
Example #4
0
/**
 * Destroy the DBM wrapper, optionally closing the underlying DB map.
 */
void
dbmw_destroy(dbmw_t *dw, gboolean close_map)
{
	dbmw_check(dw);

	if (common_stats)
		g_debug("DBMW destroying \"%s\" with %s back-end "
			"(read cache hits = %.2f%% on %s request%s, "
			"write cache hits = %.2f%% on %s request%s)",
			dw->name, dbmw_map_type(dw) == DBMAP_SDBM ? "sdbm" : "map",
			dw->r_hits * 100.0 / MAX(1, dw->r_access),
			uint64_to_string(dw->r_access), 1 == dw->r_access ? "" : "s",
			dw->w_hits * 100.0 / MAX(1, dw->w_access),
			uint64_to_string2(dw->w_access), 1 == dw->w_access ? "" : "s");

	/*
	 * If we close the map and we're volatile, there's no need to flush
	 * the cache as the data is going to be gone soon anyway.
	 */

	if (!close_map || !dw->is_volatile) {
		dbmw_sync(dw, DBMW_SYNC_CACHE);
	}

	dbmw_clear_cache(dw);
	hash_list_free(&dw->keys);
	map_destroy(dw->values);

	if (dw->mb)
		pmsg_free(dw->mb);
	bstr_free(&dw->bs);

	if (close_map)
		dbmap_destroy(dw->dm);

	dw->magic = 0;
	WFREE(dw);
}