Re: [dbus-cplusplus-devel] dispatcher timeout

[Theodore A. R. <ta...@gm...>]

On Mon, Dec 6, 2010 at 7:31 AM, Jason Glasgow <jgl...@go...> wrote:
> You might try using g_timeout_add_seconds.  We have used it with dbus-c++.
> http://git.chromium.org/gitweb/?p=cashew.git;a=blob;f=src/device.cc;h=b5ac6f5103d8a1c05e82b0f6633d7bd6b965b6a0;hb=HEAD
> -Jason

Jason,

Right. That's exactly what I want to do, but doesn't using
g_timeout_add_seconds() imply that you are using the glib event loop
and thus have to link to glib?

I need to integrate my dispatcher with our own event loops so need to
be event loop agnostic and we want to avoid using glib if possible.

I was under the (most likely mistaken) impression the the generic
dispatcher provided its own event loop which got started when you
invoke dispatcher.enter(). Sounds like I need to do some more homework
into how the dispatcher works. ;-)

I have written some simple python apps that use the glib event loop to
send a heartbeat signal and  I was hoping to achieve the same thing
using the default dispatcher.

Ted Roth

>
> On Sun, Dec 5, 2010 at 4:58 PM, Andreas Volz <li...@br...> wrote:
>>
>> Am Fri, 3 Dec 2010 16:23:08 -0700 schrieb Theodore A. Roth:
>>
>> > I've been trying to figure out how to register a timeout callback with
>> > the dispatcher so that my callback function will be invoked
>> > periodically by the dispatcher main loop. The
>> > BusDispatcher::add_timeout() method seems to take an internal timeout
>> > object as an argument which leads me to believe that I can't use that.
>> >
>> > I'm still in the learning dbus-c++ phase and my app is a rather simple
>> > server based on the echo demo, but I've stripped it down to only a
>> > Hello method and a single signal. My goal is to invoked the signal in
>> > the timeout.
>> >
>> > None of the examples in the source repo show how to do what I what,
>> > and google hasn't been too helpful. If someone has a link to an
>> > example of this, I would be most appreciative.
>>
>> Hello Ted,
>>
>> yes, BusDispatcher::add_timeout() is for another reason. To be honest I
>> never needed such an feature. Are you sure the C backend of DBus
>> provides such a feature? Could you name a function?
>>
>> I would solve this by writing an interface to a DBus service that
>> provides you with configurable callbacks. :-)
>>
>> regards
>>        Andreas
>>
>>
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>
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