[Development] epoll event dispatcher

Thiago Macieira thiago.macieira at intel.com
Fri Aug 9 17:59:21 CEST 2013

On sexta-feira, 9 de agosto de 2013 08:48:12, Thiago Macieira wrote:
> If anything, we'd need to change our interface in QSocketNotifier to
> benefit  from the edge trigger. We toggle our write notifications all the
> time because we need the edge, not the level.
> No, epoll makes no sense until we fix our code first.

I'm sorry about replying to myself. There are two more reasons for which I 
think epoll is not a good idea:

First, it's Linux-only.

Unless we get a significant benefit on Linux, I'd much rather have code shared 
with other platforms. The less we have that is platform-specific, the more we 
ensure all platforms run properly. It's already bad that we've managed to run 
into QNX bugs and have #ifdefs for it (even if the company sponsoring most of 
the work on QNX also has the kernel developers to fix those bugs). I'd rather 
people with one OS also tested things for other OSs.

Second, on Linux almost everyone is using the glib event loop (which is poll-
based). So, if epoll is interesting for us, please join the glib mailing lists 
and submit a patch there.

Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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