On 08/23/2011 05:10 PM, Jan Kiszka wrote:
On 2011-08-23 16:02, Anthony Liguori wrote: > On 08/23/2011 08:02 AM, Jan Kiszka wrote: >> On 2011-08-23 14:40, Anthony Liguori wrote: >>> You should be able to just use an eventfd or pipe. >>> >>> Better yet, we should look at using GThreadPool to replace posix-aio-compat. >> >> When interacting with the thread pool is part of some time-critical path >> (easily possible with a real-time Linux guest), general-purpose >> implementations like what glib offers are typically out of the game. >> They do not provide sufficient customizability, specifically control >> over their internal synchronization and allocation policies. That >> applies to the other rather primitive glib threading and locking >> services as well. > > We can certainly enhance glib. glib is a cross platform library. I Do you want to carry forked glib bits in QEMU?
We can make real-time depend on a newer glib version.
> don't see a compelling reason to invent a new cross platform library > just for QEMU especially if the justification is future features, not > current features. Tweaking affinity of aio threads is already a current requirement. And we already have a working threading and locking system. One that is growing beyond glib's level of support quickly (think of RCU).
glib will have to support RCU as well. But for this topic, I agree with you for now.
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