ghc-concurrent-extra

The 'concurrent-extra' package offers among other things the following selection of synchronisation primitives: * 'Broadcast': Wake multiple threads by broadcasting a value. * 'Event': Wake multiple threads by signaling an event. * 'Lock': Enforce exclusive access to a resource. Also known as a binary semaphore or mutex. The package additionally provides an alternative that works in the 'STM' monad. * 'RLock': A lock which can be acquired multiple times by the same thread. Also known as a reentrant mutex. * 'ReadWriteLock': Multiple-reader, single-writer locks. Used to protect shared resources which may be concurrently read, but only sequentially written. * 'ReadWriteVar': Concurrent read, sequential write variables. Please consult the API documentation of the individual modules for more detailed information. This package was inspired by the concurrency libraries of Java and Python.

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