file-lock


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# file-lock: Simple flock based file locking for CL

There's not much to this. Currently only supported on POSIX systems
(so no Windows, though I'll be happy get a PR for that.)

Only supported on SBCL and Lispworks.

On any other CL and OS combination, we revert to a noop lock (i.e. we
won't throw an error, so beware).

This uses a polling mechanism. (i.e.,  it doesn't block on
`flock`. Instead, it keeps polling `flock` in a non-blocking
manner. Otherwise the CL thread would be uninterruptable which isn't a
great developer experience.)

The most common use case is pretty straightforward:

```lisp
(with-file-lock (:file "...")
  (do-stuff))
```

## Author

Arnold Noronha <arnold@screenshotbot.io>


cffi

file-lock

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file-lock

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file-lock/tests

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