Hi Костя,
Thank you for your comments. Threading discussions have come up many
times over the life of the projects. We have cleaned the code up to help
facilitate multithreading in the client. The general summary of the past
discussions is: We try to make it safe to use different SWModule
instances in different threads, but not the same SWModule instance in
different threads. An SWModule performs work against the data files it
represents. It would be similar in concept to an iterator which operates
on its container. You can think of this way: you shouldn't use the same
iterator in two different threads, but you can create multiple iterators
against the container (as long as you aren't writing to the container :)
), which is the same for us.
Searching is one task often performed in the background, especially
non-lucene searching. These days a non-indexed search on any modern
hardware should take less than a few seconds, but in the older days it
would take longer, so this was often done in a separate thread in the
background.
Anyway, in practice, projects usually keep one SWMgr around per thread,
and then using the threading library of your choice for your platform. I
believe we talked about adding a .clone() method on SWModule to make it
easier to be streamlined.
The alternative is, as you suggest, try to incorporate some kind of
cross-platform threading framework into the engine if we wanted to try
to make some operations safe on the same SWModule object per thread, but
I think conceptually we would be changing the paradigm for how SWModule
is intended to be used.
Thoughts?
Troy
On 03/03/2014 05:01 AM, Костя Маслюк wrote:
Hi, all.
Welcome for your commentaries:
www.crosswire.org/tracker/browse/API-166
Blessings.
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