documentation in GHC.Conc, Control.Parallel.Strategies; querying number of CPUs

[Simon Marlow]

Frederik Eaton wrote:
> Hello,
> 
> I am interested in implementing some multi-threaded algorithms in
> Haskell.
> 
> I have run into some documentation dead-ends. The documentation in
> GHC.Conc is what I get when I search for "ghc pseq" on google, but it
> doesn't document pseq and some other functions:
> 
> pseq
> par
> forkOnIO
> childHandler
> ensureIOManagerIsRunning
> 
> In particular, I wonder: How is pseq different from seq?

See the current library docs:

http://www.haskell.org/ghc/dist/current/docs/libraries/base/Control-Parallel.html

This is what will appear in GHC 6.8, except that Control.Parallel has now 
moved into the parallel package (and the online docs don't seem to reflect 
this, which is strange - Ian, any ideas?).

In GHC 6.6.x you need to get pseq from GHC.Conc.  We noticed this mistake 
only after the 6.6 release.

> Also, the following functions in Control.Parallel.Strategies are not
> documented, at least in Haddock:

That module has better documentation now, follow the link above.

Cheers,
	Simon