[asterisk-users] Macro Overlap

[Mojo with Horan & Company, LLC]

set your own mutex using astdb?  It may just be atomic enough for you to 
get by.

Nicholas Blasgen wrote:
> I've got 4 SIP phone lines with a call-limit of 2 for each.  I've 
> written a handy macro to allow my users to dial a phone number and the 
> macro will figure out the next available line to use by first checking 
> if the GROUP() is over 2 and then checking to see if ChanIsAvail() as a 
> backup, and if it can't use the line for either reason it goes to the 
> next line.  The problem is that there are enough situations that the 
> Macro gets called twice without much time seperation.  Both macros check 
> the group() number, it comes back as free, they check the line 
> availability and it's open, and they try dialing.  But because they both 
> started at more or less the same instant, they've both at the same stage 
> in the macro and sometimes (maybe 10% of the time) a macro will try 
> dialing on a line that's already in use.
>  
> My question is this.  Is it possible to tell Asterisk to execute part of 
> a macro as a block without allowing any other commands to be processed 
> during that time?  Some way to LOCK the dialplan (as you'd do in SQL).  
> I want my macro to be able to execute the part of the code that checks 
> line status and then sets the GROUP() without allowing any other 
> dialplans from running during that time.  Anyone know if this is a 
> current feature?
> 
> -- 
> /Nick
> 
> 
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