Goldylock is a simple file lock library for Go. It is intended to ensure that only a single instance of a process is running. It is implemented without using flock which means it should be cross-platform, but it has only been tested on Linux and OS X.
A LockFile in Goldylock is either locked or unlocked. It can be manually unlocked by calling the
Unlock() method, though most likely you will want to defer that call when the lock is created.
You can optionally choose to have the LockFile unlocked if the process is killed externally.
Well... that's it. I mean, it's less than 70 lines of code after all.