[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib |
Date: |
Thu, 14 Mar 2013 11:53:19 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130219 Thunderbird/17.0.3 |
Il 14/03/2013 11:04, Peter Maydell ha scritto:
> On 13 March 2013 12:34, Anthony Liguori <address@hidden> wrote:
>> AioContext is necessary for the block layer because the block layer
>> still has synchronous I/O. I think we should aim to replace all sync
>> I/O in the long term with coroutine based I/O.
>
> I think coroutines are dreadful and we should really not be moving
> towards greater use of them. They're just really really not portable
> and they don't fit with the C language, and they're a constant source
> of problems.(For instance I have a bug I need to look into where we
> seem to hang using the gthread coroutine backend but not sigaltstack.)
The gthread coroutine backend is really more for debugging than anything
else. It works for qemu-io/img, but not for QEMU. Good that you
actually found proof. :)
Paolo
> Use threads, or a genuinely asynchronous API, or a select/poll loop
> with callbacks, but not more coroutines please.
>
> -- PMM
>
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, (continued)
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Anthony Liguori, 2013/03/13
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Anthony Liguori, 2013/03/13
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Paolo Bonzini, 2013/03/13
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Anthony Liguori, 2013/03/13
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Stefan Hajnoczi, 2013/03/14
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Paolo Bonzini, 2013/03/14
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Anthony Liguori, 2013/03/13
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Paolo Bonzini, 2013/03/13
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Anthony Liguori, 2013/03/13
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Peter Maydell, 2013/03/14
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib,
Paolo Bonzini <=
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Peter Maydell, 2013/03/14
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Paolo Bonzini, 2013/03/14
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Peter Maydell, 2013/03/14
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Stefan Hajnoczi, 2013/03/15
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Markus Armbruster, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Peter Maydell, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Paolo Bonzini, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Peter Maydell, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, Paolo Bonzini, 2013/03/19
Re: [Qemu-devel] [RFC PATCH 0/2] port network layer onto glib, liu ping fan, 2013/03/14