Package rc provides reference-counted file descriptors.
This package solves a very niche problem, namely managing the lifetime
of a file descriptor which is not packaged and used as an *os.File,
or as a net.Conn / net.PacketConn, in the presence of potential
concurrent access.
I originally built package rc to help manage eBPF map file descriptors, but the code is generic enough that it can be used for other similar purposes just as well.
Package rc presents itself as a Go module, and is currently at v2.0.0. The update from v1 to v2 changed the API to be function-based, and removed special handling of Windows file descriptors.
Package rc is distributed under the ISC license. A copy of the license can be found in the LICENSE file.