Re: FastCGI multithread programming problems

Hello,

This is correct in case of *CGI* or FastCGI process
that is *backward* compartible with CGI.

This is defenatly not correct in case of 
general FastCGI process.

See FCGX API and multithreaded examples of code.

Artyom

--- "haigui.chen" <[email protected]> wrote:

> Dear Artyom,
> Thanks for your answer, but someone tell me that one
> cgi process just handle
> one request at the same time, use multi-threads to
> perform the same request
> handling job is useless, how do you think about
> this?
> 
> Thanks and BRS
> Harvy
> 
> -----Original Message-----
> From:
>
fastcgi-developers-bounces+harvy.chen=gmail.com-VYFNfGabXYtBDgjK7y7TUQ@public.gmane.org
>
[mailto:fastcgi-developers-bounces+harvy.chen=gmail.com-VYFNfGabXYtBDgjK7y7TUQ@public.gmane.org]
> On
> Behalf Of Artyom
> Sent: 2008Äê1ÔÂ23ÈÕ 3:12
> To: [email protected]
> Subject: Re: [FASTCGI] FastCGI multithread
> programming problems
> 
> Hello,
> 
> First of all:
> 
> 1. Yes you can use many threads
>    There are several examples for this technique
>    in FastCGI sources.
>    
>    The main idea: you listen on socket and wait for
>    the request. After you "accept" it you get
>    ann independent socket you work with it - so
>    you have an independent thread to deal with it.
> 
> 2. There examples in Fcgi sources proposes
>    usage of mutex with accept. I think this
>    is not the best way to do this.
> 
> Nowdays I work on C++ Web Development Framework
> that uses FastCGI protocol as a base.
> I implemented there a thread pool technique
> when the major thread accepts requests and passes
> them to worker threads.
> 
> You can find and example of such usage
> at cppcms.sourceforge.net
> Look at
>
http://cppcms.svn.sourceforge.net/viewvc/cppcms/framework/trunk/
> 
> Files thread_pool/worker_thread
> 
> Several notes:
> 1. You should not work with millons of requests
>    in same time - server does the job for you.
>    You need only create a page
> 2. Asynchronous technique is quite problematic
>    for web development because of 3rd pary API
>    that do not support it.
> 
> NOTE: I'm not big specialist in FastCGI however
> I use it and implemented a framework that is
> still on early development stages.
> I use thread pool technique and work with
> lighttpd web server. 
> 
> Artyom
> 
> http://cppcms.sourceforge.net/
> C++ Web Development Framework
> 
> 
> --- Harvy Chen <[email protected]> wrote:
> 
> > Dears,
> > I'm developping a project which has a
> communication
> > channel(based on HTTP
> > protocol) to recevie request from clients(Maybe
> > million clients), the
> > platform is under linux,
> > now i'm trying use FastCGI to provide a high
> > performance process capacity, I
> > wonder know if the fastcgi can support
> > multi-threads, i means in one cgi
> > process,
> > i create a thread pool to handle the request, But
> i
> > looked up in the
> > internet, found that just one rquest will
> transport
> > to a cgi process to
> > handle at the same time,
> > means the thread pool will be useless. Maybe i'm
> > wrong, will anybody can
> > give me correct answer?
> > 
> > If the fastCGI can support aync processing, it's
> > perfect to me.
> > > ___________________________________
> > fastcgi-developers mailing list
> > http://fastcgi.com/fastcgi-developers/
> > 
> 
> 
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