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