[Freeswitch-dev] sleep()

Anthony Minessale anthony.minessale at gmail.com
Tue Oct 1 19:19:37 MSD 2013

Just putting the channel in a loop calling switch_read_frame() is an ample
way to keep the channel idle.
That really is all switch_sleep does but you can't call it from some other
thread.  The session thread must call it.
You should never call any functions on a session from some other thread
unless it is not related to media and even then should be used sparingly.

On Tue, Oct 1, 2013 at 6:19 AM, Paul-Lists <lists at collisters.com> wrote:

> Hi everyone, I'm developing a bespoke app for freeswitch that communicates
> via modem tones and DTMF with remote devices.
> All is going well and Freeswitch seems an ideal development platform.
> I am struggling with some of the bigger concepts, like threads and
> scheduling.
>  My dial plan, answers the call and calls my app where I am attaching a
> media bug from my main app entry point. the media bug gets the rtp packets
> and happily decodes them until it has received a full block of data. I have
> implemented my own event queue  and timer processes, and my main loop reads
> from its queue, does the work, executes a switch_sleep() then goes round
> the loop until the incoming phone call ends
> My problem is that when the sleep ends, there is some kind of a glitch and
> I lose an RTP packet, containing a few bytes of modem data.  If I make the
> sleep last for 60 seconds, I get stacks of modem data and it all decodes
> fine without a missing bit, just the act of waking, then going back to
> sleep causes the problem.
> Is there a better way to suspend my app for a second or less while I'm
> decoding data in the background, I don't want to hog the processor.
> Any pointers would be much appreciated.
> Best regards,
> Paul Collister
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Anthony Minessale II

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