Re: [libmicrohttpd] running in main thread

[José Bollo]

On Mon, 2 Dec 2019 22:03:51 +0100
Christian Grothoff <groth...@gnunet.org> wrote:

> On 12/2/19 9:55 PM, José Bollo wrote:
> > 
> > I tried to write something like "while(true) MHD_run();" but strace
> > showed its inefficiency.  
> 
> Oh my. Yes, that'd be bad.
> 
> > IMHO it can make sense: "1. setup 2. run" without exit conditon and
> > not bound to any stdin, i.e. a normal unix daemon.
> >   
> 
> Well, that's trivial. Please consider the attached fragment (not
> tested, but should be very close to what you need, modulo error
> handling).

I know it is trivial (my implementation below) but I advocate to offer
a facility that does the job. It avoids tricky aspects like EPOLL and
get_daemon_info (is working for windows???)

        mhd = MHD_start_daemon(MHD_USE_EPOLL, ...

        if (!mhd)
                return 1;

        info = MHD_get_daemon_info(mhd, MHD_DAEMON_INFO_EPOLL_FD);
        if (info == NULL) {
                MHD_stop_daemon(mhd);
                return 2;
        }

        pfd.fd = info->epoll_fd;
        pfd.events = POLLIN;
        for(;;) {
                if (MHD_get_timeout(mhd, &to) == MHD_NO)
                        i = -1;
                else
                        i = (int)to;
                poll(&pfd, 1,  i);
                MHD_run(mhd);
        }

        MHD_stop_daemon (mhd);
        return 0;