GLib Main event loop with IOChannel and order of events? cross-post gtk-list (no answer)
- From: Sune Ahlgren <sune_ahlgren hotmail com>
- To: <gtk-app-devel-list gnome org>
- Subject: GLib Main event loop with IOChannel and order of events? cross-post gtk-list (no answer)
- Date: Thu, 11 Dec 2008 15:11:50 +0100
Hi,
I'm writing a UDP server where I set up 1 socket for multicast messages(SOCKET A) and 1 for the wildcard
address ANY(SOCKET B). These sockets are monitored as IOChannels and added to the main event loop.
Problem
----------
In case of receiving a single multicast message I get 1 event on SOCKET A and 1 event on SOCKET B. This is
expected, but now I want to make sure that the events for SOCKET A is always handled before events SOCKET B.
The reason I don't want to use the event priority feature is that I'm concerned with starvation of low
priority events.
Observation
-------------
I have observed that the order of adding the IOChannels watches (SOCKET A/B) to the Main loop affects the
order of their handling. If I add the SOCKET A event to the Main event loop before I add the SOCKET B event,
SOCKET A events are always handled first which is the behavior I want.
Question
-------------
1) Can this observed behavior be trusted or is it just a fluke?
2) Is my starvation concern unfounded?
3) Is there any other way to achieve what I want?
Thanks for your insights
BRs
/Sune
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