[libvirt] [PATCH 10/15] Fully asynchronous monitor I/O processing

Daniel Veillard veillard at redhat.com
Wed Nov 4 17:14:18 UTC 2009

On Tue, Nov 03, 2009 at 02:50:04PM -0500, Daniel P. Berrange wrote:
> Change the QEMU monitor file handle watch to poll for both
> read & write events, as well as EOF. All I/O to/from the
> QEMU monitor FD is now done in the event callback thread.
> When the QEMU driver needs to send a command, it puts the
> data to be sent into a qemuMonitorMessagePtr object instance,
> queues it for dispatch, and then goes to sleep on a condition
> variable. The event thread sends all the data, and then waits
> for the reply to arrive, putting the response / error data
> back into the qemuMonitorMessagePtr and notifying the condition
> variable.
> * src/qemu/qemu_driver.c: XXX this change shouldn't be here
> * src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h: Remove
>   raw I/O functions, and a generic qemuMonitorSend() for
>   invoking a command
> * src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
>   Remove all low level I/O, and use the new qemuMonitorSend()
>   API. Provide a qemuMonitorTextIOProcess() method for detecting
>   command/reply/prompt boundaries in the monitor data stream

  I tried to review it, but honnestly I can't keep up, it's getting
too complex. But I don't want to block, ACK


Daniel Veillard      | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
daniel at veillard.com  | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library  http://libvirt.org/

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