Re: [Libevent-users] sample code for evconnlistener and multi-thread

[Nick Mathewson <nickm@xxxxxxxxxxxxx>]

On Fri, Oct 30, 2009 at 11:34:43PM +0800, Zhuang Yuyao wrote:
> Hi,
> 
> I am wondering if anyone could show me some sample code of using
> evconnlistener with multi-threaded connection handlers.
> 
> I've read the multi-thread code in memcached. in libevent 2.x, there
> are some functions  (ie. evthread_use_pthreads(),
> evthread_make_base_notifiable(), event_queue_insert(),
> event_queue_remove()) which look like the "official" implementation of
> event notification cross threads. but after reading regress_pthread.c
> (the only sample code bundled with libevent 2.x which contains
> evthread_make_base_notifiable()), I still can not figure out how to
> use evconnlistener() with multi-threaded connection handlers.

There is no code yet for explicitly having callbacks happen in
multiple threads.  The multithreading stuff in Libevent 2.0 is there
to make it possible to use a single event base from multiple threads,
but it doesn't handle having the callbacks done by a thread pool.
That is a feature we'd like to add, especially if some volunteer
contributes a patch for it, but it may need to wait for Libevent 2.1.

yrs,
-- 
Nick
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