RE: The Errno Story

"Simon Marlow" <[email protected]> Fri, 25 Jul 2003 09:50:00 +0100

Newsgroups	gmane.comp.lang.haskell.ffi
Message-ID	<3429668D0E777A499EE74A7952C382D1948C89@EUR-MSG-01.europe.corp.microsoft.com>

John Meacham writes:

> I am not a fan of having to stow errno for every ffi call..

As was pointed out to me last time this came up, you don't have to stow
it for every FFI call, only on a context switch.  

Adding one word to a TSO is also very cheap.  The total cost is almost
certainly unmeasurable.

Cheers,
	Simon