Amit Shah <amit.s...@redhat.com> wrote:
> Add a non-blocking write handler that can return with -EAGAIN to the
> caller and also callback when the socket becomes writable.
>
> Non-blocking writes are only enabled for sockets that are opened in
> non-blocking mode and only for callers that have registered a callback
> handler for resuming writes.
>
> Signed-off-by: Amit Shah <amit.s...@redhat.com>
I
> static void tcp_chr_connect(void *opaque)
> {
> CharDriverState *chr = opaque;
> TCPCharDriver *s = chr->opaque;
> + IOHandler *write_cb;
> + int flags;
> + bool nonblock;
> +
> + flags = fcntl(s->fd, F_GETFL);
> + if (flags == -1) {
> + flags = 0;
> + }
> + nonblock = flags & O_NONBLOCK;
> +
> + write_cb = NULL;
> + chr->nonblock = false;
> + if (nonblock && chr->chr_write_unblocked) {
> + write_cb = chr->chr_write_unblocked;
> + chr->nonblock = true;
> + }
>
> + chr->write_blocked = false;
> s->connected = 1;
> qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
write_cb is a write-only variable, no?
