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bug#11519: "Wrong type argument: characterp" building custom-deps while
From: |
Stefan Monnier |
Subject: |
bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping |
Date: |
Sun, 27 May 2012 22:15:00 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.1.50 (gnu/linux) |
> I didn't mean STRING_CHAR_*. I agree that they should be fixed not to
> have such unexpected side effect. They should be read-only operations.
> As a temporary band-aid for Emacs 24.1, I suggest the change below.
Looks fine (should make the regex.c patch unnecessary).
> You said "malloc", so I took an issue with the MS C runtime
> implementation of malloc. Since all the other implementations suffer
> from fragmentation, there's no reason to believe that the MS
> implementation avoids that danger.
The problem is inherent to the malloc API, pretty much, yes.
> We could easily turn off buffer relocation in ralloc.c for good, by
> fixing the value of use_relocatable_buffers at zero. But I'm worried
> that this would cause Emacs on Windows run out of memory (or act as if
> it were) faster.
AFAIK, Emacs under GNU/Linux and Mac OS X uses non-relocatable buffers,
and they don't seem to suffer more from fragmentation problems than
Emacs under Windows. But yes, unless we use an mmap-style allocation,
it would use more actual memory.
> For example, in an Emacs session that runs for 2
> weeks and has a 200MB working set, I just visited a 1.3GB file, went
> to its middle and typed "C-u 30000 d" to insert 30K characters. Emacs
For sure editing such large file in a 32bit address space might prove
problematic without relocation, (and even with buffer relocation, some
non-buffer allocation might end up fragmenting the address space too
much) but luckily few people do that (you need to compile
with --wide-int to be able to do that).
> Yet another alternative is to emulate mmap on Windows using the
> equivalent Windows API. But that requires a research comparing mmap
> features we need and use on Posix platforms with the features offered
> by Windows, to make sure this is at all feasible.
That would be nice.
> Such a research
> would need to be done by someone who knows enough about mmap and is
> willing to do the job. Do we have such a person on board?
I don't volunteer.
Stefan
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, (continued)
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/22
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Stefan Monnier, 2012/05/22
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/22
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Stefan Monnier, 2012/05/22
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/22
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Stefan Monnier, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Ken Brown, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Stefan Monnier, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/24
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping,
Stefan Monnier <=
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/28
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Stefan Monnier, 2012/05/28
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/28
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Stefan Monnier, 2012/05/28
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/29
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Kenichi Handa, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Stefan Monnier, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Eli Zaretskii, 2012/05/23
- bug#11519: "Wrong type argument: characterp" building custom-deps while boostrapping, Kenichi Handa, 2012/05/22