libreoffice-online/loolwsd/PROBLEMS
2016-04-13 16:12:53 +03:00

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- There is way too much of busy waiting for fairly arbitrarily chosen
timeout periods in the code.
With "busy wait" here I of course don't mean *real* busy wait that
would actually mindlessly spin the CPU.
I mean calling poll() with some short timeout (order of seconds),
and each time a timeout happens (which surely is the large majority
of times), check a condition, which in the large majority of times
will not be true, and then repeat.
Instead the code could use for instance eventfds to enable the
poll() calls to be without timeout. Or something similar, depending
on case.
- Recursive mutexes are evil. In general, I think the consensus is
that recursive mutexes should be avoided. One should use them only
when absolutely necessary because the code-base is so complex that
one has no idea how it works. That was hopefully not the case when
recursive mutexes were introduced here? But probably it is by now...
- Occasionally Control-C (SIGINT) doesn't shut fown loolwsd. One has
to kill it with SIGKILL. Which of course leaves all the chroot jails
around.
- ASCII art? Seriously?