wepoll - epoll for windows

This library implements the epoll API for Windows applications. It attempts to be efficient, and to match the Linux API and as closely as possible.

Rationale

Unlike Linux, OS X, and many other operating systems, Windows doesn't have a good API for receiving socket state notifications. It only supports the select and WSAPoll APIs, but they don't scale and suffer from other issues.

Using I/O completion ports isn't always practical when software is designed to be cross-platform. Wepoll offers an alternative that is much closer to a drop-in replacement for software that was designed to run on Linux.

Features

can poll 100000s of sockets efficiently
fully thread safe
multiple threads can poll the same epoll port
sockets can be added to multiple epoll sets
polling for EPOLLIN, EPOLLOUT, EPOLLPRI, EPOLLRDHUP, EPOLLHUP, and EPOLLERR events
EPOLLONESTHOT flag

Limitations

only works with sockets
some modes not suported: EPOLLET, EPOLLEXCLUSIVE

How to use

The library is distributed as a single source file (wepoll.c) and a single header file (wepoll.h). Compile the .c file as part of your project, and include the header wherever needed.

Compatibility

Requires Windows 7 or higher.
Can be compiled with recent versions of MSVC and Clang.
GCC (mingw) should work (but is untested).

Compatibility notes

TODO

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