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1. ThreadId :: ThreadId# -> ThreadId

   base	GHC.Conc.Sync

   No documentation available.

2. fromThreadId :: ThreadId -> Word64

   base	GHC.Conc.Sync

   Map a thread to an integer identifier which is unique within the current process.

3. mkWeakThreadId :: ThreadId -> IO (Weak ThreadId)

   base	GHC.Conc.Sync

   Make a weak pointer to a ThreadId. It can be important to do this if you want to hold a reference to a ThreadId while still allowing the thread to receive the BlockedIndefinitely family of exceptions (e.g. BlockedIndefinitelyOnMVar). Holding a normal ThreadId reference will prevent the delivery of BlockedIndefinitely exceptions because the reference could be used as the target of throwTo at any time, which would unblock the thread. Holding a Weak ThreadId, on the other hand, will not prevent the thread from receiving BlockedIndefinitely exceptions. It is still possible to throw an exception to a Weak ThreadId, but the caller must use deRefWeak first to determine whether the thread still exists.

4. myThreadId :: IO ThreadId

   base	GHC.Conc.Sync

   Returns the ThreadId of the calling thread (GHC only).

5. showThreadId :: ThreadId -> String

   base	GHC.Conc.Sync

   No documentation available.

6. DivideByZero :: ArithException

   base	GHC.Exception

   No documentation available.

7. DivideByZero :: ArithException

   base	GHC.Exception.Type

   No documentation available.

8. invalidateDebugCache :: IO ()

   base	GHC.ExecutionStack.Internal

   Free the cached debug data.

9. data ThreadId#

   base	GHC.Exts

   (In a non-concurrent implementation, this can be a singleton type, whose (unique) value is returned by myThreadId#. The other operations can be omitted.)

10. type Void# = (# #)

    base	GHC.Exts

    No documentation available.

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