tree 8569c90681ada207b182ff4b583225c7a70f3d9e
parent 753d0ed85c52fdc42e9ffc7a8a88137bf8ed0e67
author Valentin Bartenev <vbart@nginx.com> 1468585137 +0300
committer Valentin Bartenev <vbart@nginx.com> 1468585137 +0300

Events: support for EPOLLEXCLUSIVE.

This flag appeared in Linux 4.5 and is useful for avoiding thundering herd
problem.

The current Linux kernel implementation walks the list of exclusive waiters,
and queues an event to each epfd, until it finds the first waiter that has
threads blocked on it via epoll_wait().