Control.Concurrent.STM.TStack

A simple stack implementation with an concurrent STM access functions similar to that of TChan. In contrast to TChan, which is a FIFO buffer, TStack is a LIFO buffer.

Documentation

data TStack a

Concurrent STM stakc.

newTStack :: STM (TStack a)

Build and return a new instance of TStack.

writeTStack :: TStack a -> a -> STM ()

Write a value into the TStack.

readTStack :: TStack a -> STM a

Read the next value from the TStack.

isEmptyTStack :: TStack a -> STM Bool

Check whether the TStack is empty.

tryReadTStack :: TStack a -> STM (Maybe a)

Try to read the next value from the TStack.