[Openmcl-devel] slow read-char

Erik Pearson erik at adaptations.com
Thu Jul 27 09:43:26 PDT 2006

Okay, so I discovered xcompile-ccl, which allows things to work  
better since it doesn't load funky stuff as it goes along. It can't  
compile l1-streams:

Compiling "/usr/local/ccl/ccl/level-1/l1-streams.lisp"...
 > Error: While compiling (STREAM-READ-CHAR-NO-HANG (BUFFERED- 
 >        Not enough args in Lambda form: (STREAM ERROR-IF-NIL)  
(STREAM)., in process listener(1).
 > Type :POP to abort, :R for a list of available restarts.
 > Type :? for other options.
1 > (:b)

Without l1-streams compiling, the system can't load from ppc- 
boot.image in order to create the standard image. Of course, in side  
the guts of this thing, I'm hopeless as far as determining what is  
really wrong here... (yeah, it is interesting to glaze over the  
backtrace, but...)


On Jul 26, 2006, at 12:28 PM, Erik Pearson wrote:

> Hi Gary,
> It looks like, as predicted, cvs bleeding is busted -- even using the
> new test image.
> compile-ccl gets to
> ;Loading #P"/usr/local/ccl/ccl/bin/streams.dfsl"...
> ;Compiling "/usr/local/ccl/ccl/lib/pathnames.lisp"...
> Read error between positions 0 and 726 in /usr/local/ccl/ccl/lib/
> pathnames.lisp.
>> Error: Unknown type specifier: BASIC-STREAM
>> While executing: %%TYPEP, in process listener(1).
> and then dies, leaving the REPL in a sad unusable state.
> Dare I guess this is a boostrapping issue? Some of the stream code
> has already been loaded that requires BASIC-STREAM, but basic stream
> hasn't been loaded yet, or incompatible streams have already been
> created, or something like that? Is this a matter of magically
> creating a compatible image, or can it be solved by changing the
> build procedure, or is such an outlier case (messing with system
> fundamentals) that you'd rather just special-case it? I would hope
> that rebuild-ccl (thanks for that!) would be able to handle
> reconstructing the system from pieces. Perhaps a very primitive lisp
> that doesn't rely on high(er) level functionality (single-threaded,
> just reads bytes, etc.) could be invoked to rebuild the system, even
> from the Unix command line? But what the bleep do I know.
> Erik.
> On Jul 22, 2006, at 5:03 AM, Gary Byers wrote:
>> On Sat, 22 Jul 2006, Eric Marsden wrote:
>>>>>>>> "gb" == Gary Byers <gb at clozure.com> writes:
>>>  gb> It's tricky to bootstrap a few of those changes (I actually
>>> managed
>>>  gb> to produce images that were much less functional than yours
>>> seems to
>>>  gb> be ...).
>>>  I have finally found a lisp implementation that is even harder to
>>>  build than CMUCL ; at least CMUCL developers generally provide
>>>  bootstrap files that help automate the build process :-)
>> There are now bootstrapping images for 32/64-bit DarwinPPC and
>> x86-64 Linux in the testing directory; if anyone wants LinuxPPC
>> images, please let me know.
>> I also tagged the current bleeding-edge tree (whose contents match
>> those images) with the tag "work_in_progress_060720".  This may
>> make it easier for anyone who wants to insulate themselves from
>> subsequent changes to do so.  (Recall that CVS tags are "sticky"
>> and that it may be necessary to clear them in order to get back
>> in synch with the head.)
>> Hopefully, these will become obsolete (incompatible with bleeding- 
>> edge
>> CVS and unable to easily build from it) later today (or as soon as
>> I can check in the next round of incompatible, difficult to bootstrap
>> low-level stream changes.)
>> Since this is likely to be pretty volatile - and since I don't really
>> have a better way of keeping all platforms in synch without checking
>> in a lot of incremental (aka half-finished) changes, I think that the
>> advice that I gave the other day still holds: it's likely to be
>> tricky to build the lisp from CVS while these changes are taking
>> place, it's still not likely to take more than a few days, and when
>> that dust settles I'd certainly -want- to provide images and/or
>> snapshot tarballs to make it easy for people to use and test the new
>> code.
>> Aside from the fact that it's evidence of a step in the right
>> direction, I don't think that the 060720 code is particularly
>> interesting.  If people are concerned about I/O performance and
>> want to see evidence of that first step, then I suppose that
>> these images might be of greater interest.
>>> -- 
>>> Eric Marsden
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>>> Openmcl-devel at clozure.com
>>> http://clozure.com/mailman/listinfo/openmcl-devel
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