| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
UnliftIO.MVar
Description
Unlifted Control.Concurrent.MVar.
Since: 0.1.0.0
Synopsis
- data MVar a
- newEmptyMVar :: MonadIO m => m (MVar a)
- newMVar :: MonadIO m => a -> m (MVar a)
- takeMVar :: MonadIO m => MVar a -> m a
- putMVar :: MonadIO m => MVar a -> a -> m ()
- readMVar :: MonadIO m => MVar a -> m a
- swapMVar :: MonadIO m => MVar a -> a -> m a
- tryTakeMVar :: MonadIO m => MVar a -> m (Maybe a)
- tryPutMVar :: MonadIO m => MVar a -> a -> m Bool
- isEmptyMVar :: MonadIO m => MVar a -> m Bool
- withMVar :: MonadUnliftIO m => MVar a -> (a -> m b) -> m b
- withMVarMasked :: MonadUnliftIO m => MVar a -> (a -> m b) -> m b
- modifyMVar :: MonadUnliftIO m => MVar a -> (a -> m (a, b)) -> m b
- modifyMVar_ :: MonadUnliftIO m => MVar a -> (a -> m a) -> m ()
- modifyMVarMasked :: MonadUnliftIO m => MVar a -> (a -> m (a, b)) -> m b
- modifyMVarMasked_ :: MonadUnliftIO m => MVar a -> (a -> m a) -> m ()
- tryReadMVar :: MonadIO m => MVar a -> m (Maybe a)
- mkWeakMVar :: MonadUnliftIO m => MVar a -> m () -> m (Weak (MVar a))
Documentation
An MVar (pronounced "em-var") is a synchronising variable, used
for communication between concurrent threads. It can be thought of
as a box, which may be empty or full.
Instances
| NFData1 MVar | Since: deepseq-1.4.3.0 |
Defined in Control.DeepSeq | |
| NFData (MVar a) | NOTE: Only strict in the reference and not the referenced value. Since: deepseq-1.4.2.0 |
Defined in Control.DeepSeq | |
| Eq (MVar a) | Since: base-4.1.0.0 |
newEmptyMVar :: MonadIO m => m (MVar a) Source #
Lifted newEmptyMVar.
Since: 0.1.0.0
tryTakeMVar :: MonadIO m => MVar a -> m (Maybe a) Source #
Lifted tryTakeMVar.
Since: 0.1.0.0
tryPutMVar :: MonadIO m => MVar a -> a -> m Bool Source #
Lifted tryPutMVar.
Since: 0.1.0.0
isEmptyMVar :: MonadIO m => MVar a -> m Bool Source #
Lifted isEmptyMVar.
Since: 0.1.0.0
withMVarMasked :: MonadUnliftIO m => MVar a -> (a -> m b) -> m b Source #
Unlifted withMVarMasked.
Since: 0.1.0.0
modifyMVar :: MonadUnliftIO m => MVar a -> (a -> m (a, b)) -> m b Source #
Unlifted modifyMVar.
Since: 0.1.0.0
modifyMVar_ :: MonadUnliftIO m => MVar a -> (a -> m a) -> m () Source #
Unlifted modifyMVar_.
Since: 0.1.0.0
modifyMVarMasked :: MonadUnliftIO m => MVar a -> (a -> m (a, b)) -> m b Source #
Unlifted modifyMVarMasked.
Since: 0.1.0.0
modifyMVarMasked_ :: MonadUnliftIO m => MVar a -> (a -> m a) -> m () Source #
Unlifted modifyMVarMasked_.
Since: 0.1.0.0
tryReadMVar :: MonadIO m => MVar a -> m (Maybe a) Source #
Lifted tryReadMVar.
Since: 0.1.0.0
mkWeakMVar :: MonadUnliftIO m => MVar a -> m () -> m (Weak (MVar a)) Source #
Unlifted mkWeakMVar.
Since: 0.1.0.0