RE: Yet another Concurrency request

[Sigbjorn Finne (Intl Vendor)]

ghc-4.02 supplies

 Concurrent.myThreadId  :: IO ThreadId

will document.

hth
--sigbjorn

George Russell <[EMAIL PROTECTED]> writes: 
> 
> Yes, it's me again.  Could there be an action in the 
> Concurrent library
> which returns the ThreadId for the current thread?  Argument for:
> (1) this seems easy to implement.
> (2) it can't be simulated using the other functions.  (At 
> least, not so far
>     as I can see.)
> (3) if you want to write a lot of code that involves doing 
> things to this
>     thread (which seems rather likely to me), or identifying 
> this thread in
>     a unique way, you have to (a) get the ThreadID from the 
> parent thread into
>     this one (using an MVar say, ugh!) and then (b) haul it 
> around as an
>     argument all the time (ugh ugh!).  
> I have purely selfish reasons for making this request; namely I have
> a chunk of Haskell to maintain which makes heavy use of such 
> a function, but
> implements it via a _ccall which pokes around with GHC's internals.
> 
> Sorry to keep on about Concurrent, and if this is the wrong 
> mailing list
> for talking about the Hugs/GHC extensions do let me know.
> 
> Many thanks
> 
> George Russell
>