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[debbugs-tracker] bug#31750: closed (simplify and tune Emacs stack-relat

From: GNU bug Tracking System
Subject: [debbugs-tracker] bug#31750: closed (simplify and tune Emacs stack-related allocation)
Date: Fri, 15 Jun 2018 07:48:02 +0000 
Your message dated Fri, 15 Jun 2018 00:46:58 -0700
with message-id <address@hidden>
and subject line Re: bug#31750: simplify and tune Emacs stack-related allocation
has caused the debbugs.gnu.org bug report #31750,
regarding simplify and tune Emacs stack-related allocation
to be marked as done.

(If you believe you have received this mail in error, please contact
address@hidden)


-- 
31750: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=31750
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--- Begin Message --- Subject: simplify and tune Emacs stack-related allocation Date: Thu, 7 Jun 2018 19:27:52 -0700 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 While looking into the Emacs garbage collector's stack-overflow problems I noticed several opportunities for improving performance and simplifying the code in minor ways. I plan to install the attached patches to take advantage of these opportunities; although they don't address stack overflow, they can be thought of as a first, cleanup step toward addressing stack overflow.
Overall these patches trim about 250 lines from the C source code, and should improve efficiency by not creating objects on the heap to handle stack-related events such as implementing save-excursion. This patch also removes primitives like 'free_misc' that ask for trouble by second-guessing the garbage collector. I'm filing this as a bug report in order to give the patches a bit of time to cool before installing. Comments welcome, as usual.

Attachment: 0001-New-mint_ptr-representation-for-C-pointers.patch
Description: Text Data

Attachment: 0002-Simplify-init_module_assertions.patch
Description: Text Data

Attachment: 0003-Avoid-Lisp_Misc-allocation-if-C-stack-suffices.patch
Description: Text Data

Attachment: 0004-Use-record_unwind_protect_ptr-to-avoid-allocation.patch
Description: Text Data

Attachment: 0005-Avoid-allocating-a-Lisp_Save_Value-in-ftfont.c.patch
Description: Text Data

Attachment: 0006-Just-use-cons-in-macfont_descriptor_entity.patch
Description: Text Data

Attachment: 0007-Avoid-allocating-Lisp_Save_Value-for-excursions.patch
Description: Text Data

Attachment: 0008-Avoid-allocating-Lisp_Save_Value-for-arrays.patch
Description: Text Data

Attachment: 0009-New-type-Lisp_Misc_Ptr.patch
Description: Text Data

Attachment: 0010-Remove-Lisp_Misc_Save_Value.patch
Description: Text Data


--- End Message ---
--- Begin Message --- Subject: Re: bug#31750: simplify and tune Emacs stack-related allocation Date: Fri, 15 Jun 2018 00:46:58 -0700 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 I installed the patches into master after tweaking the mint_ptr comments a bit, and am marking this as done.

--- End Message ---
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