Function writev

app/redis-6.2.6/src/anet_ff.c:323–336

}

ssize_t
writev(int sockfd, const struct iovec *iov, int iovcnt)
{
    if (unlikely(inited == 0)) {
        INIT_FUNCTION(writev);
        return real_writev(sockfd, iov, iovcnt);
    }

    if (ff_fdisused(sockfd)) {
        return ff_writev(sockfd, iov, iovcnt);
    } else {
        return real_writev(sockfd, iov, iovcnt);
    }
}

ssize_t read(int sockfd, void *buf, size_t count)
{