[plt-scheme] High precision timing and MrEd/OSX

From: Matthew Flatt (mflatt at cs.utah.edu)
Date: Mon Dec 20 22:28:14 EST 2004

At Tue, 21 Dec 2004 11:30:47 +1100, "Rohan Drape" wrote:
> A recent message on this subject got no response so I will 
> try again and hopefully be clearer.

Sorry - your message came at a busy time for me, and then I forgot.

> This extension works well enough under mzscheme/Linux and
> MrEd/Linux, and under mzscheme/OSX, but fails under MrEd/OSX.
> I think this may be a problem with MrEd/OSX using SIGALRM internally.

MrEd doesn't use SIGALRM internally.

MrEd does start a helper Posix thread under OS X, and maybe the problem
is that the helper thread can't deal with the signal?

But your earlier message didn't say exactly what goes wrong under OS X.
Does the extension simply fail to report the correct time, or does MrEd
itself break?


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