[Galago-devel] libnotify: system freezes for a few secs. on notify_notification_show

[Christian Hammond]

Hi,

libnotify is a thin wrapper around D-BUS, and all communication happens
within D-BUS. I don't have experience with libnotify and threads either (as
I tend to avoid threads in my apps). It's possible that it's libnotify, but
I would start off assuming the issue has to do with your app and D-BUS in
some way.

Christian

-- 
Christian Hammond - chipx86 at chipx86.com
VMware, Inc.


On Thu, Feb 5, 2009 at 1:16 AM, Sundaram <legends2k at yahoo.com> wrote:

> Hi,
> Is libnotify thread safe? Should I call dbus_g_thread_init() to make sure
> it is?
>
> I have written a Eng. thesaurus Artha<http://sourceforge.net/projects/artha>using GLib & GTK+, in which, when I get a particular hot key combination, on
> that key press signal handler, I call notify_notification_show() [before
> this, I close any earlier notifications by notify_notification_close()].
> Everything works fine.
>
> But, when I press that hot key combo more than a few times, say 10, for a
> first few I get notification after notification, but towards the end
> (arbitrary), the app. freezes and even the desktop freezes for a few seconds
> (8 to 10 secs) and then I see the notification and everything gets back to
> normal, including my app. But when this happens,
> notify_notification_show() returns a FALSE (eventhough a notification was
> shown), and GError msg reads thus: *"Did not receive a reply. Possible
> causes include: the remote application did not send a reply, the message bus
> security policy blocked the reply, the reply timeout expired, or the network
> connection was broken.".*
> *
> *As for the code, before calling any other func. I call g_thread_init(),
> then dbus_g_thread_init and notify_init() and then get a notifier handle
> by calling notify_notification_new_with_status_icon() with a GtkStatus
> icon, in my main, all of them only once. After that, when in gtk_main()
> loop, when ever I get a hot key press signal every time, I update the body &
> summary of the same notifier with a new one using
> notify_notification_update() and then call notify_notification_show(). I
> haven't used any thread related functions except the above ones (init). Is
> anything wrong in this approach that libnotify's notify_notification_show()
> chokes the whole system for a few seconds, because of my wrong way of using
> it? Or is it a glitch on libnotify's side?
>
> Thanks!
>
> Regards,
> Sundaram
>
>
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>
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