Function processPendingCommandsAndResetClient

app/redis-6.2.6/src/networking.c:2061–2069

This function will execute any fully parsed commands pending on * the client. Returns C_ERR if the client is no longer valid after executing * the command, and C_OK for all other cases. */

 * the client. Returns C_ERR if the client is no longer valid after executing
 * the command, and C_OK for all other cases. */
int processPendingCommandsAndResetClient(client *c) {
    if (c->flags & CLIENT_PENDING_COMMAND) {
        c->flags &= ~CLIENT_PENDING_COMMAND;
        if (processCommandAndResetClient(c) == C_ERR) {
            return C_ERR;
        }
    }
    return C_OK;
}

/* This function is called every time, in the client structure 'c', there is
 * more query buffer to process, because we read more data from the socket