Re: [Qemu-devel] [PATCH] qemu-char: Convert socket char backend to parse/kind

[Peter Maydell]

On 30 June 2014 11:57, Gerd Hoffmann <address@hidden> wrote:
> IIRC "wait for client to connect" is a blocking accept() call.  Which
> you certainly don't want do in a qmp command handler.  So if we switch
> over chardevs created via -chardev to use the qmp init code path too we
> need some hackery to make '-chardev socket,wait,...' work without
> introducing a blocking qmp command I suspect ...

We already have blocking code paths in qmp_chardev_open_socket():
for the non-listening case we call socket_connect() with a NULL callback
argument, which will result in our calling connect() in blocking mode.

thanks
-- PMM