From: Paul Eggert <eggert@cs.ucla.edu>
To: rms@gnu.org, Eli Zaretskii <eliz@gnu.org>
Cc: triska@metalevel.at, emacs-devel@gnu.org
Subject: Re: Using the GNU GMP Library for Bignums in Emacs
Date: Sun, 22 Apr 2018 21:21:02 -0700 [thread overview]
Message-ID: <f31be78f-411c-4d2e-000c-e04ac9b53e29@cs.ucla.edu> (raw)
In-Reply-To: <E1fASFm-0000OZ-BJ@fencepost.gnu.org>
Richard Stallman wrote:
> There are quite a few places in the C code of Emacs
> where execution can get stuck; that's why I added immediate quitting.
> The problems I fixed that way have all come back.
I hope they haven't come back. We tried to be methodical about preventing Emacs
from getting stuck.
> What was the reason for this change?
Allowing immediate quitting from arbitrary points in execution causes problems
when Emacs internals assume that actions are done in a certain order and are not
just partly done when interrupted by a quit. In the old days we could assume
that execution order at the machine level was the same order as in the C program
source code, which meant that as long as the C source code did things in the
right order Emacs could survive immediate quitting. That assumption is no longer
true. To do things safely now, we need to either (1) add critical sections to
Emacs where appropriate, or (2) test the quit flag at appropriate intervals. In
practice (2) is easier to implement and to maintain.
next prev parent reply other threads:[~2018-04-23 4:21 UTC|newest]
Thread overview: 281+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-21 14:15 Using the GNU GMP Library for Bignums in Emacs Siraphob (Ben) Phipathananunth
2018-04-21 14:34 ` Eli Zaretskii
2018-04-21 15:01 ` Siraphob (Ben) Phipathananunth
2018-04-21 15:23 ` Paul Eggert
2018-04-21 15:36 ` Eli Zaretskii
2018-04-21 15:40 ` Siraphob (Ben) Phipathananunth
2018-04-21 15:54 ` Eli Zaretskii
2018-04-21 16:08 ` Paul Eggert
2018-04-26 3:17 ` Tom Tromey
2018-04-26 3:33 ` Stefan Monnier
2018-04-27 15:56 ` Richard Stallman
2018-04-27 16:08 ` Stefan Monnier
2018-04-21 22:42 ` Richard Stallman
2018-04-22 2:48 ` dancol
2018-04-22 13:00 ` Philipp Stephani
2018-04-22 17:43 ` Paul Eggert
2018-04-22 18:04 ` Daniel Colascione
2018-04-22 18:34 ` Clément Pit-Claudel
2018-04-23 3:39 ` Richard Stallman
2018-04-22 8:00 ` Siraphob (Ben) Phipathananunth
2018-04-22 9:06 ` Paul Eggert
2018-04-23 5:19 ` Helmut Eller
2018-04-23 8:39 ` Andreas Schwab
2018-04-23 14:36 ` Paul Eggert
2018-04-23 19:22 ` Helmut Eller
2018-04-23 20:26 ` Paul Eggert
2018-04-23 3:36 ` Richard Stallman
2018-04-22 12:43 ` Helmut Eller
2018-04-22 17:47 ` Paul Eggert
2018-04-23 3:39 ` Richard Stallman
2018-04-23 4:41 ` Paul Eggert
2018-04-24 2:54 ` Richard Stallman
2018-04-24 4:35 ` Paul Eggert
2018-04-24 5:45 ` Helmut Eller
2018-06-03 23:44 ` Jefferson Carpenter
2018-04-25 1:05 ` Richard Stallman
2018-04-25 1:19 ` Paul Eggert
2018-04-25 22:40 ` Richard Stallman
2018-04-25 23:29 ` Paul Eggert
2018-04-30 3:07 ` Richard Stallman
2018-04-30 5:00 ` Michael Welsh Duggan
2018-04-30 12:34 ` Stefan Monnier
2018-05-01 3:01 ` Richard Stallman
2018-04-30 7:04 ` Paul Eggert
2018-05-01 3:01 ` Richard Stallman
2018-05-01 21:45 ` Paul Eggert
2018-05-03 3:34 ` Richard Stallman
2018-05-03 5:53 ` Paul Eggert
2018-05-03 6:26 ` Helmut Eller
2018-05-03 17:49 ` Eli Zaretskii
2018-05-03 18:26 ` Paul Eggert
2018-05-04 4:26 ` Richard Stallman
2018-05-05 5:03 ` Ken Raeburn
2018-05-06 3:12 ` Richard Stallman
2018-05-07 17:24 ` Ken Raeburn
2018-05-08 1:55 ` Richard Stallman
2018-05-07 18:40 ` Andreas Schwab
2018-05-03 18:51 ` Helmut Eller
[not found] ` <83sh78o6af.fsf@gnu.org>
2018-05-03 20:30 ` Helmut Eller
2018-05-03 21:48 ` Paul Eggert
2018-05-04 4:22 ` Richard Stallman
2018-04-24 2:54 ` Richard Stallman
2018-04-23 3:03 ` Stefan Monnier
2018-07-05 21:29 ` Tom Tromey
2018-07-05 21:53 ` John Wiegley
2018-07-06 20:43 ` Tom Tromey
2018-07-06 21:00 ` Paul Eggert
2018-07-07 4:27 ` Tom Tromey
2018-07-07 4:53 ` Paul Eggert
2018-07-07 6:20 ` Tom Tromey
2018-07-07 6:38 ` Paul Eggert
2018-07-09 5:37 ` Tom Tromey
2018-07-09 16:22 ` Paul Eggert
2018-07-09 22:56 ` Tom Tromey
2018-07-09 23:02 ` Paul Eggert
2018-07-09 23:13 ` Tom Tromey
2018-07-10 4:01 ` Tom Tromey
2018-07-10 13:46 ` Tom Tromey
2018-07-08 15:59 ` Tom Tromey
2018-07-09 5:43 ` Tom Tromey
2018-07-10 4:10 ` Stefan Monnier
2018-07-07 23:43 ` Richard Stallman
2018-07-08 4:58 ` Paul Eggert
2018-07-08 22:55 ` Richard Stallman
2018-07-08 5:01 ` Tom Tromey
2018-07-08 22:55 ` Richard Stallman
2018-07-09 5:39 ` Tom Tromey
2018-07-09 20:15 ` Stefan Monnier
2018-07-09 23:25 ` Paul Eggert
2018-07-10 3:41 ` Stefan Monnier
2018-07-10 5:32 ` Helmut Eller
2018-07-10 13:54 ` Stefan Monnier
2018-07-10 16:01 ` Paul Eggert
2018-07-10 16:48 ` Helmut Eller
2018-07-10 17:45 ` Paul Eggert
2018-07-10 19:14 ` Helmut Eller
2018-07-11 1:31 ` Stefan Monnier
2018-07-11 5:59 ` Helmut Eller
2018-07-11 14:23 ` Stefan Monnier
2018-07-11 2:04 ` Tom Tromey
2018-07-11 2:36 ` Paul Eggert
2018-07-10 20:33 ` Stefan Monnier
2018-07-11 1:52 ` Tom Tromey
2018-07-11 2:35 ` Paul Eggert
2018-07-11 3:16 ` Stefan Monnier
2018-07-11 3:30 ` Paul Eggert
2018-07-11 3:42 ` Stefan Monnier
2018-07-11 22:48 ` Richard Stallman
2018-07-12 4:51 ` Tom Tromey
2018-07-12 23:35 ` Richard Stallman
2018-07-15 15:02 ` Stefan Monnier
2018-07-18 10:20 ` Paul Eggert
2018-07-18 13:17 ` Stefan Monnier
2018-07-27 21:14 ` Making 'eq' == 'eql' in bignum branch Paul Eggert
2018-07-28 14:26 ` Stefan Monnier
2018-07-29 3:34 ` Paul Eggert
2018-07-29 4:09 ` Stefan Monnier
2018-07-29 14:35 ` Eli Zaretskii
2018-07-30 17:07 ` Stefan Monnier
2018-07-30 18:49 ` Eli Zaretskii
2018-07-30 20:10 ` Stefan Monnier
2018-07-30 21:58 ` Paul Eggert
2018-07-31 2:38 ` Eli Zaretskii
2018-07-31 7:10 ` Paul Eggert
2018-07-31 16:12 ` Eli Zaretskii
2018-07-31 22:44 ` Paul Eggert
2018-08-01 5:51 ` Eli Zaretskii
2018-08-01 6:43 ` Paul Eggert
2018-08-01 8:53 ` Eli Zaretskii
2018-08-03 7:40 ` Paul Eggert
2018-08-03 7:55 ` Eli Zaretskii
2018-08-10 11:12 ` Pip Cet
2018-08-10 15:15 ` Stefan Monnier
2018-08-10 15:43 ` Pip Cet
2018-08-10 15:55 ` Stefan Monnier
2018-08-10 16:52 ` John Yates
2018-08-10 19:45 ` Eli Zaretskii
2018-08-10 20:48 ` Paul Eggert
2018-08-10 7:05 ` Elias Mårtenson
2018-08-10 8:02 ` Paul Eggert
[not found] ` <<83d0v4p1si.fsf@gnu.org>
2018-07-31 15:08 ` Drew Adams
2018-07-31 16:24 ` Eli Zaretskii
2018-07-31 22:21 ` Paul Eggert
2018-08-20 0:04 ` Stefan Monnier
2018-08-20 1:33 ` Paul Eggert
2018-08-20 15:20 ` Stefan Monnier
2018-08-20 6:35 ` Pip Cet
2018-08-20 7:05 ` Paul Eggert
2018-08-20 7:19 ` Pip Cet
2018-08-20 7:27 ` Paul Eggert
2018-08-20 8:49 ` Andy Moreton
2018-08-20 16:03 ` Paul Eggert
2018-08-20 16:41 ` Andy Moreton
2018-08-20 16:51 ` Paul Eggert
2018-08-20 16:58 ` Andy Moreton
2018-08-20 19:50 ` Pip Cet
2018-08-20 21:54 ` Andy Moreton
2018-08-21 3:38 ` Richard Stallman
2018-08-20 17:23 ` Eli Zaretskii
2018-08-20 17:35 ` Paul Eggert
2018-08-20 15:13 ` Eli Zaretskii
2018-08-20 15:26 ` Stefan Monnier
2018-08-20 16:19 ` Eli Zaretskii
2018-08-21 15:01 ` Robert Pluim
2018-08-21 19:09 ` Robert Pluim
2018-08-21 19:35 ` Paul Eggert
2018-08-22 8:26 ` Lars Ingebrigtsen
2018-08-22 13:22 ` Herring, Davis
2018-08-22 13:28 ` Lars Ingebrigtsen
2018-08-22 13:55 ` Paul Eggert
2018-08-22 20:01 ` Stefan Monnier
2018-08-23 8:13 ` Robert Pluim
2018-08-23 13:45 ` Eli Zaretskii
2018-08-23 14:48 ` Robert Pluim
2018-08-23 18:43 ` Stefan Monnier
2018-08-24 9:51 ` Robert Pluim
2018-08-25 17:59 ` Stefan Monnier
2018-08-20 16:01 ` Paul Eggert
2018-08-20 16:26 ` Eli Zaretskii
2018-08-21 3:37 ` Richard Stallman
2018-08-20 15:12 ` Eli Zaretskii
2018-08-20 15:26 ` Lars Ingebrigtsen
2018-08-20 16:18 ` Eli Zaretskii
2018-08-22 19:59 ` Stefan Monnier
2018-08-21 3:38 ` Richard Stallman
2018-08-25 23:27 ` Paul Eggert
2018-08-26 12:45 ` Tramp and fixnum (was: Making 'eq' == 'eql' in bignum branch) Michael Albinus
2018-08-26 15:34 ` Paul Eggert
2018-08-26 16:06 ` Eli Zaretskii
2018-08-26 16:44 ` Tramp and fixnum Michael Albinus
2018-08-28 4:47 ` Tramp and fixnum (was: Making 'eq' == 'eql' in bignum branch) Paul Eggert
2018-08-26 16:49 ` Tramp and fixnum Michael Albinus
2018-08-28 4:48 ` Paul Eggert
2018-08-28 11:50 ` Michael Albinus
2018-08-28 14:33 ` Michael Albinus
2018-08-28 15:18 ` Paul Eggert
2018-08-29 8:09 ` Michael Albinus
2018-08-26 16:34 ` Making 'eq' == 'eql' in bignum branch Tom Tromey
2018-08-26 16:59 ` Stefan Monnier
2018-08-26 20:19 ` Alan Mackenzie
2018-08-26 20:31 ` Stefan Monnier
2018-08-27 2:31 ` Eli Zaretskii
2018-08-27 4:45 ` Stefan Monnier
2018-08-27 5:10 ` Paul Eggert
2018-08-27 14:59 ` Eli Zaretskii
2018-08-27 15:18 ` Stefan Monnier
2018-08-27 15:37 ` Eli Zaretskii
2018-08-27 15:47 ` Stefan Monnier
2018-08-27 18:57 ` Paul Eggert
2018-08-26 20:45 ` Richard Stallman
2018-08-26 22:10 ` Clément Pit-Claudel
2018-08-27 0:23 ` Paul Eggert
2018-08-27 22:50 ` Richard Stallman
2018-08-28 1:44 ` Paul Eggert
2018-08-28 14:12 ` Tom Tromey
2018-08-28 21:30 ` Richard Stallman
2018-08-28 22:03 ` Clément Pit-Claudel
2018-08-29 22:10 ` Richard Stallman
2018-08-28 18:03 ` Clément Pit-Claudel
2018-08-29 3:53 ` Stefan Monnier
2018-08-29 18:49 ` Clément Pit-Claudel
2018-08-28 1:33 ` Lars Ingebrigtsen
2018-08-28 2:25 ` Pip Cet
2018-08-28 3:45 ` Paul Eggert
2018-08-28 7:34 ` Ken Raeburn
2018-08-28 9:11 ` Helmut Eller
2018-08-28 12:15 ` Stefan Monnier
2018-08-28 18:00 ` Clément Pit-Claudel
2018-08-28 22:57 ` Pip Cet
2018-08-29 3:42 ` Herring, Davis
2018-08-29 5:40 ` Helmut Eller
2018-08-29 13:15 ` Pip Cet
2018-08-31 19:59 ` Alan Mackenzie
2018-08-31 20:30 ` Clément Pit-Claudel
2018-08-31 21:58 ` Alan Mackenzie
2018-09-01 1:26 ` Herring, Davis
2018-08-31 21:15 ` Stefan Monnier
2018-09-01 1:05 ` Herring, Davis
2018-09-02 10:57 ` Alan Mackenzie
2018-09-04 6:14 ` Herring, Davis
2018-09-01 4:47 ` Clément Pit-Claudel
2018-08-29 3:22 ` Elias Mårtenson
2018-08-29 18:56 ` Clément Pit-Claudel
2018-08-29 19:30 ` Stefan Monnier
2018-08-31 0:09 ` Stefan Monnier
2018-09-01 2:32 ` Richard Stallman
2018-08-31 16:41 ` Paul Eggert
2018-08-28 21:25 ` Richard Stallman
2018-08-30 19:13 ` Johan Bockgård
2018-08-30 21:14 ` Clément Pit-Claudel
2018-08-30 21:35 ` Tom Tromey
2018-08-30 21:56 ` Clément Pit-Claudel
2018-08-20 15:37 ` Stefan Monnier
2018-08-20 16:23 ` Eli Zaretskii
2018-08-20 16:12 ` Paul Eggert
2018-08-20 17:21 ` Helmut Eller
2018-08-20 14:02 ` Stefan Monnier
2018-07-18 15:55 ` Using the GNU GMP Library for Bignums in Emacs Eli Zaretskii
2018-07-18 21:42 ` Paul Eggert
2018-07-22 12:06 ` Ken Raeburn
2018-07-22 16:44 ` Paul Eggert
2018-08-01 7:57 ` Paul Eggert
2018-08-01 11:59 ` Eli Zaretskii
2018-08-02 2:06 ` Paul Eggert
2018-08-02 13:49 ` Eli Zaretskii
2018-07-22 19:57 ` Achim Gratz
2018-04-21 16:46 ` Markus Triska
2018-04-21 17:09 ` Eli Zaretskii
2018-04-21 17:27 ` Markus Triska
2018-04-21 18:37 ` Paul Eggert
2018-04-21 22:42 ` Richard Stallman
2018-04-22 2:43 ` Eli Zaretskii
2018-04-23 3:34 ` Richard Stallman
2018-04-23 4:21 ` Paul Eggert [this message]
2018-04-23 13:13 ` Stefan Monnier
2018-04-24 2:54 ` Richard Stallman
2018-04-24 4:34 ` Paul Eggert
2018-04-25 1:05 ` Richard Stallman
2018-04-23 15:18 ` Eli Zaretskii
2018-04-24 18:56 ` Emanuele Santoro
2018-04-26 15:52 ` Glenn Morris
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