Function clientSubscriptionsCount

app/redis-6.2.6/src/pubsub.c:128–131

Return the number of channels + patterns a client is subscribed to. */

/* Return the number of channels + patterns a client is subscribed to. */
int clientSubscriptionsCount(client *c) {
    return dictSize(c->pubsub_channels)+
           listLength(c->pubsub_patterns);
}

/* Subscribe a client to a channel. Returns 1 if the operation succeeded, or
 * 0 if the client was already subscribed to that channel. */