[Asterisk-Dev] ASTOBJ update

[Kevin P. Fleming]

Olle E. Johansson wrote:

> Just make sure we have portability so we do not get into that black hole 
> again :-) It took a while to get the mutexes going on other platforms 
> than Linux...

Yes, that will be a big issue. rwlocks are also POSIX and SUSv2/3 
specified, so there is a reasonable chance that they will work on other 
platforms as well. The bigger issues right now are recursion (taking the 
same lock multiple times) and upgrading (switching from "reader" to 
"writer" without losing the lock completely).