Re: [Haskell-cafe] Why is TChan GHC specific?

On 14 May 2010 00:10, Derek Elkins wrote:

On Thu, May 13, 2010 at 10:49 AM, Edward Amsden wrote:

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On Wed, May 12, 2010 at 3:29 PM, Peter Robinson wrote:

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As far as I know, TChan needs the 'retry' combinator which requires GHC's RTS. Same is true for TMVar, I think.

(sorry for the doubling peter, I forgot reply-all)

OK. I'm new to this and probably didn't know where to look, but I didn't know that 'retry' was GHC specific.

All of STM (Software Transactional Memory) is GHC-specific.

That's technically true for the "real" STM implementation, but the stm package also contains the module 'Control.Sequential.STM' that provides a sequential implementation which will work even without GHC's runtime. Peter