golang-github-burntsushi-locker-dev 0.0~git20171006.a6e239e-1 (amd64 binary) in ubuntu cosmic

 Package locker is a simple Go package to manage named ReadWrite mutexes.
 These appear to be especially useful for synchronizing access
 to session based information in web applications.
 .
 The common use case is to use the package level functions, which use
 a package level set of locks (safe to use from multiple goroutines
 simultaneously). However, you may also create a new separate set
 of locks.
 .
 All locks are implemented with read-write mutexes. To use them
 like a regular mutex, simply ignore the RLock/RUnlock functions.