Re: [libmicrohttpd] Connection timeout notification callback; Dynamically changing thread pool

[Christian Grothoff]

On Thursday 11 February 2010 15:19:25 John Lee wrote:
> I have two questions:
> 1) Is it possible to for my app to receive a notification when MHD has
>  timed out on a connection? At the moment my app also needs to duplicate or
>  maintain timestamp for connection timeout.

Yes, use MHD_OPTION_NOTIFY_COMPLETED (and expect a MHD_RequestTerminationCode 
of MHD_REQUEST_TERMINATED_TIMEOUT_REACHED).

> 2) I'm using MHD_USE_SELECT_INTERNALLY and specifying a thread pool. Is it
> possible to dynamically change the number of threads based on my loading
> conditions? Would it even make sense to do this, in that does one see a
> performance improvement by throwing more threads into the mix?

Depends on what you mean by dynamically.  You can change the number of threads 
in the pool by passing a different value to MHD_daemon_start.  So if you  
figure 
out how many cores you have before that call, you should be able to 
dynamically adjust to the "perfect" number of threads (which is likely #cores 
or #cores/2).

Best,

Christian