[Haskell-cafe] How to use QSem?
S. Alexander Jacobson
haskell at alexjacobson.com
Tue Jun 22 16:43:34 EDT 2004
The GHC documentation on QSem is very sparse. I
would like to give a thread exclusive access to a
My *guess* based on the documentation is that I
can create an exclusive lock using:
logSem <- newQSem 1
And then any thread that wants to lock the
withLogSem x = do waitQSem logSem; y <- x; signalQSem logSem; return y
withLogSem $ rotate curLogPos
Am I misunderstanding QSem?
S. Alexander Jacobson mailto:me at alexjacobson.com
More information about the Haskell-Cafe