CHECK_GAP
zs->zs_checkpoint = CHECK_GAP;
zs->zs_checkpoint = zs->zs_in_count + CHECK_GAP;
zs->zs_checkpoint = CHECK_GAP;
db->checkpoint = CHECK_GAP;
db->checkpoint = db->in_count + CHECK_GAP;
zs->zs_checkpoint = CHECK_GAP;
zs->zs_checkpoint = zs->zs_in_count + CHECK_GAP;
zs->zs_checkpoint = CHECK_GAP;
zs->zs_checkpoint = CHECK_GAP;