On Mon, 10 Jul 2017, Jan Henning Thorsen wrote: > The reason why you're seeing the polling is because of the implementation > in the CGI plugin. You can see it > here: > https://github.com/jhthorsen/mojolicious-plugin-cgi/blob/master/lib/Mojolicious/Plugin/CGI.pm#L35
There might be portability issues to non-POSIX environments, but you can avoid the polling by using "the selfpipe trick". Install a proper SIGCHILD hander instead of using a polling loop to detect exiting child processes. Your sigchild handler just needs to write a single byte into the pipe where your event loop poll can detect it and do whatever is required. https://cr.yp.to/docs/selfpipe.html https://www.sitepoint.com/the-self-pipe-trick-explained/ https://lwn.net/Articles/177897/
