diff options
Diffstat (limited to 'libraries/base/Control/Concurrent.hs')
| -rw-r--r-- | libraries/base/Control/Concurrent.hs | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libraries/base/Control/Concurrent.hs b/libraries/base/Control/Concurrent.hs index 35248bfba3..1786c3ded3 100644 --- a/libraries/base/Control/Concurrent.hs +++ b/libraries/base/Control/Concurrent.hs @@ -3,6 +3,7 @@ , MagicHash , UnboxedTuples , ScopedTypeVariables + , RankNTypes #-} {-# OPTIONS_GHC -fno-warn-deprecations #-} -- kludge for the Control.Concurrent.QSem, Control.Concurrent.QSemN @@ -73,6 +74,7 @@ module Control.Concurrent ( -- $boundthreads rtsSupportsBoundThreads, forkOS, + forkOSWithUnmask, isCurrentThreadBound, runInBoundThread, runInUnboundThread, @@ -180,7 +182,7 @@ attribute will block all other threads. -} --- | fork a thread and call the supplied function when the thread is about +-- | Fork a thread and call the supplied function when the thread is about -- to terminate, with an exception or a returned value. The function is -- called with asynchronous exceptions masked. -- @@ -316,6 +318,11 @@ forkOS action0 return tid | otherwise = failNonThreaded +-- | Like 'forkIOWithUnmask', but the child thread is a bound thread, +-- as with 'forkOS'. +forkOSWithUnmask :: ((forall a . IO a -> IO a) -> IO ()) -> IO ThreadId +forkOSWithUnmask io = forkOS (io unsafeUnmask) + -- | Returns 'True' if the calling thread is /bound/, that is, if it is -- safe to use foreign libraries that rely on thread-local state from the -- calling thread. |