[slime-devel] SLIME User Survey

[Martin Simmons]

>>>>> On Tue, 22 Jun 2004 10:14:31 +0200, =?ISO-8859-1?Q?Kristian_Elof_S=F8rensen?= <elof at image.dk> said:

  Kristian> Klaus Harbo wrote:

  >> Martin Simmons <martin at xanalys.com> writes:
  >> 
  >> 
  >>>>>>>> On Sun, 20 Jun 2004 18:08:04 +0200, Klaus Harbo <klaus at harbo.net> said:
  >>>>>>>> 
  >>>>>>>> 
  Klaus> I run Lispworks on WinXP and Emacs on my OpenBSD box.  SLIME
  Klaus> occassionally provokes an error: The Lispworks debugger says 'Error in
  Klaus> thread "control-thread"', "PROCESS-WAIT called when scheduling not
  Klaus> allowed".
  >>> 
  Klaus> Note that I run Lispworks on Windows XP and Emacs on my OpenBSD box.
  Klaus> I strongly suspect that the problem is related to Lispworks
  Klaus> multiprocessing.
  >>> 
  >>> The error means that something is mis-using PROCESS-WAIT, but we need to know
  >>> more.  Next time it happens, please try to get a bug report including a
  >>> backtrace by using the :bug-form command.
  >>> 
  >>> 
  >> 
  >> I will do that - any help would be most welcome.
  >> 
  >> 
  >> 
  Kristian> I have been seing the same error maybe once a day when using LispWorks 
  Kristian> Personal 4.3.[67] and various slime versions from cvs over the last 
  Kristian> month or two. I have not been remote controlling other lisps using slime.

  Kristian> I have mostly been doing CAPI work when this has happened, but since I 
  Kristian> have done little else than CAPI work with LispWorks in this period this 
  Kristian> might not be a clue.

The problem might be in SWANK::ENCODE-MESSAGE.  I assume that emacs is on the
other end of the stream, but if it fails to read fast enough then one of the
CL stream functions in SWANK::ENCODE-MESSAGE might block, which will cause the
error because this happens inside the WITHOUT-INTERRUPTS.

__Martin