ANN: stm-chans 2.0.0

wren ng thornton wren at
Mon May 13 06:35:17 CEST 2013

-- stm-chans 2.0.0

The stm-chans package offers a collection of channel types, similar to
Control.Concurrent.STM.{TChan,TQueue} but with additional features.

-- Changes (since 1.3.1)

* (by kudah) Added TMQueue and TBMQueue, which are like the corresponding
T*Chans except using the new T*Queue data types in stm >= 2.4. We use CPP
to provide compatibility shims for older versions of stm.

-- Long description

In particular stm-chans offers the following data types:

* Control.Concurrent.STM.TBChan:  Bounded FIFO channels.

    When the channel is full, writers will block/retry. This ensures that
the writers do not get too far ahead of the readers, which helps to
make sure that memory and cpu resources are used responsibly.

* Control.Concurrent.STM.TMChan:   Closeable FIFO channels.
* Control.Concurrent.STM.TMQueue:  Closeable FIFO queues.

    Like TChan (Maybe a) but with a monotonicity guarantee that once
Nothing is returned all future reads will be Nothing as well.

* Control.Concurrent.STM.TBMChan:  Bounded Closeable FIFO channels.
* Control.Concurrent.STM.TBMQueue: Bounded Closeable FIFO queues.

    Combines the capabilities of TBChan and TMChan.

In addition, the stm-chans package offers a (partial) compatibility layer
for various changes to the stm package. These include backwards
compatibility for the T*Queue types, as well as various API improvements
(see ticket #5104 [1]).


-- Links




Haddock (Darcs version):

Live well,

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