global-lock provides a single global lock for Haskell code, implemented without
unsafePerformIO. You can use this, for example, to protect a thread-unsafe C
library. global-lock is usable as-is, or as a template for including a similar
lock in your own Haskell project.
Documentation is hosted at http://hackage.haskell.org/package/global-lock
To build the documentation yourself, run
$ cabal configure && cabal haddock --hyperlink-source
This will produce HTML documentation under dist/doc/html/global-lock