[issue1520] POSIX message queues port

["Stathis Kamperis \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

Stathis Kamperis <ekamperi@gmail.com> added the comment:

Hey Alex, thanks for commenting.

Some problems for instance:
1. http://www.netbsd.org/cgi-bin/query-pr-single.pl?number=41225
2. Our lack of signal queues has some implications with mq_notify() not working
100% as the standard expects.
3. There is a stale read-only useless (because currently we lack mqueues
support) p1003_1b.mq_open_max sysctl variable, that needs to be removed. When I
took a look at it in the summer it was part of some hackerish code and didnt
touch it.

So things like that. Not fatal, but need to be solved eventually.

As for pkgsrc, I didnt complete the bulk build, because at some point that I
needed to resume it, it started building all the packages from scratch! And
after 14 days of building, I didnt have the patience to start all over again.
Also I didnt check which packages I broke (if any), because that would require a
non-mqueue bulk build to compare with, which I just can't afford resources-wise.

The bottom line is that I didnt introduce any significant breakage. Based on
hassos@ reports, we already have ~700 package failures.

Cheers,
Stathis

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