time_t blerg_get_timestamp(struct blerg *blerg, int record);
int blerg_set_subscription_mark(struct blerg *blerg);
uint64_t blerg_get_subscription_mark(struct blerg *blerg);
time_t blerg_get_timestamp(struct blerg *blerg, int record);
int blerg_set_subscription_mark(struct blerg *blerg);
uint64_t blerg_get_subscription_mark(struct blerg *blerg);