If your platform supports it, you should grab the epoll FD from libmicrohttpd and only plug that single FD into your event loop, effectively cascading the two event loops.
See MHD_DAEMON_INFO_EPOLL_FD for how to grab that FD. On 2/8/22 11:49 PM, Greg Stark wrote: > I have an existing event loop and other events I need to handle so I > was planning to use external select mode. However I'm surprised that > MHD_get_fdset is the only way to get the set of file descriptors. > > It seems pointless to have MHD loop over its file descriptors > constructing an fdset and then I have to loop over the fdset to pick > out the file descriptors to add them to the event loop handler (which > preferentially uses epoll, kqueue, or poll). > > I'm not expecting a large pool of web connections, in fact I would > rarely have more than one concurrent connection however there are a > lot of file descriptors used elsewhere in the application so the > maximum fd number might actually be large. fd_sets are a particularly > impractical api for this. >
