Thread-local storage, or TLS, is an important ingredient in many
algorithms and data structures.
The GHC compiler does not provide a built-in notion of TLS either
at the IO-thread or OS thread level. This package provides a few
different implementations of a simple TLS API.
All exported public modules provide exactly the same interface with
different implementations. Run the included criterion benchmark
suite to ascertain which performs the best on your platform.
Example criterion benchmark data can be found here (from an Intel Ivy-Bridge i7-3770 desktop):
http://www.cs.indiana.edu/~rrnewton/datasets/xmen_tls_report.html