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BSD-3-Clause licensed and maintained by Gabriel Wicke
Atomic operations including CAS (compare-and-swap), fetch & add and variants
suitable for low-level shared-memory synchronization.
The implementation is using GCC's builtin atomic operations (available in GCC >=
4) in C wrappers called through the FFI. See these links for background:
Portability: This package is primarily developed on a Linux system, but
should work wherever GCC >= 4 is available. It has been confirmed as working
on OSX. On Windows, it should work with Cygwin but currently fails for
vanilla Haskell-Platform 2010.1.0.0 as it still packages GCC 3.x. An
installer for updated versions of GCC is available at
http://www.mingw.org/ and should make this package work in connection with
Haskell-Platform. Feedback on compatibility would be appreciated.
Testing: The following commands can be used to compile and run the test suite:
cabal unpack bits-atomic && cd bits-atomic-* # if not yet locally available
cabal configure -ftest
cabal build
cabal test
Recent changes:
0.1.3: Documentation updates, especially on portability. No functional
changes.
0.1.2: Avoid using System.FilePath in Setup.hs to fix build failure on hackage