Re: [naviserver-devel] Upload Progress

[Vlad S. <vl...@cr...>]

I submitted Service Request with new patch with spooler support. Very 
simple but seems to be working well.

Zoran Vasiljevic wrote:
> 
> Am 03.01.2006 um 16:47 schrieb Vlad Seryakov:
> 
>> Spool thread can be a replica of driver thread, it will do the same  
>> as driver and then pass Sock to the conn thread. So making it C- based 
>> is not that hard and still it will be fast and small.
>>
>> Plus, upload statistics now will be handled in the spool thread,  not 
>> driver thread, so no overhead and slowdown.
>>
>> So we read up to maxreradahead, then queue it into spooling thread  
>> and spooling thread will give it to conn thread. Spooling thread  will 
>> use same Sock/Driver structures, actually Sock will not see  any 
>> differences between running in driver thread or spooling thread.
>>
>> I can try to provide test of using spooling thread along with  driver 
>> thread today if i will have time.
> 
> 
> This is all true, and perhaps the easiest way to get
> to the result on the short term. I appreciate very
> much the effort you're doing and we will definitely
> use it, as soon as you get something working stable
> enough.
> 
> Still, our precious (little) server would definitely
> benefit from some additional event-loop-type of
> processing where you need not spawn a thread for
> just about anything. Tcl has come long way with
> their simple event loop and single-thread approach.
> 
> Ultimately I can imagine something like:
> 
>                   ---------
>                       |
>                 driver_thread
>                  /        \
>           conn_threads spool_threads
>                |            |
>           blocking_io  nonblocking-io
> 
> where one would do blocking IO (db stuff etc) whereas
> the other can be used for simple non-blocking ops like
> copy_file_to_socket or vice-versa types of operations.
> 
> 
> Zoran
> 
> 
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-- 
Vlad Seryakov
571 262-8608 office
vl...@cr...
http://www.crystalballinc.com/vlad/