Epoll + ephttpd2.0 + Coro

Epoll + ephttpd2.0 + Coro

[Philippe Meloche (LMC)]

Hi,

I'm trying to run the ephttpd 2.0 server on a PII with a 2.4.19 kernel 
patched with /dev/epoll.  But I have trouble with the coro ( C 
couroutine ) library.  The server always does a segmentation fault when 
the function dph_exit_conn() calls co_exit(0). It's the fatal() function 
that generates this segmentation fault. Plus, this fault is 
automatically generated each time there is no more requests on a 
connection and that dph_httpd() calls dph_exit_conn().

I would like to know of you ever had this kind of problem and how you 
solved it. The version of coro I use is the 1.1.0-pre2. I need this http 
server to rebuild /dev/epoll tests on my computer for reference results.

Philippe Meloche

Philippe.Meloche@lmc.ericsson.se

Re: Epoll + ephttpd2.0 + Coro

[Davide Libenzi]

On Tue, 25 Mar 2003, Philippe Meloche (LMC) wrote:

> Hi,
>
> I'm trying to run the ephttpd 2.0 server on a PII with a 2.4.19 kernel
> patched with /dev/epoll.  But I have trouble with the coro ( C
> couroutine ) library.  The server always does a segmentation fault when
> the function dph_exit_conn() calls co_exit(0). It's the fatal() function
> that generates this segmentation fault. Plus, this fault is
> automatically generated each time there is no more requests on a
> connection and that dph_httpd() calls dph_exit_conn().
>
> I would like to know of you ever had this kind of problem and how you
> solved it. The version of coro I use is the 1.1.0-pre2. I need this http
> server to rebuild /dev/epoll tests on my computer for reference results.

You better use the latest patch :

http://www.xmailserver.org/linux-patches/epoll-lt-2.4.20-0.3.diff

and the latest library/ephttpd server :

http://www.xmailserver.org/linux-patches/epoll-lib-0.4.tar.gz

The new man pages are available here :

http://www.xmailserver.org/linux-patches/epoll.txt
http://www.xmailserver.org/linux-patches/epoll_create.txt
http://www.xmailserver.org/linux-patches/epoll_ctl.txt
http://www.xmailserver.org/linux-patches/epoll_wait.txt


The crashes you're seen are because of a gcc error compiling the coroutine
library. The one that you'll find inside the epoll-lib should work. If I
remember well the problem was solved by switching from -O3 to -O2 when
building the coro library ...




- Davide