Re: OOC exception handler

[acken@informatik.uni-kl.de]

   Date: Fri, 1 Dec 95 06:58:40 EST
   From: Mike Griebling <grieblm@trt.allied.com>

   [snip]

   Josef Templ actually defines an exception handling mechanism in his OFront
   product.  Maybe we could steal some of his ideas?  He basically installs
   an exception handler in his SYSTEM module which get called by a HALT with
   negative numbers.  This seems a lot simpler than the elaborate Modula-3
   mechanism.  Templ also defines lock variables to protect regions that are
   not reentrant (e.g., X11 library contains non-reentrant procedures).

I agree that the Modula-2 stuff is somewhat of an overkill.  I don't
understand the part about lock variable, though.  What are these
variables guarding, how are locks set and freed?  And why should I
worry about reentrant code?

   Each back-end would be free to implement the exception handler hook as they
   require.

Simple and elegant.  I vote for stealing :-).

-- mva