From: Chong Yidong <cyd@gnu.org>
To: Dov Grobgeld <dov.grobgeld@gmail.com>
Cc: 10580@debbugs.gnu.org
Subject: bug#10580: 24.0.92; gdb initialization takes more than one minute at 100% CPU
Date: Mon, 07 May 2012 14:11:42 +0800 [thread overview]
Message-ID: <874nrswme9.fsf@gnu.org> (raw)
In-Reply-To: <CA++fsGEQ9yyhBvsHzfeKZDpGYQ9g9r7w2cKZudmZtWcDv-Ma5Q@mail.gmail.com> (Dov Grobgeld's message of "Mon, 7 May 2012 08:07:44 +0300")
Dov Grobgeld <dov.grobgeld@gmail.com> writes:
> I put breakpoints at the lines that you indicated, but as you
> suspected, the breakpoints are only reached when I exit gdb with the
> "quit" command.
>
> What's next? Thanks again for looking into this.
Please apply the following patch, then, when Emacs is taking 100% CPU,
set a breakpoint at process.c:4854, i.e. at
if (p->pid == -2)
;
This captures the state just after Emacs calls read_process_output on
the pty passed to your program. If this breakpoint is triggered, please
report the value of nread and errno, and step through to the end of the
subsequent if/else block and report the gdb session. Thanks.
=== modified file 'src/process.c'
*** src/process.c 2012-04-20 06:39:29 +0000
--- src/process.c 2012-05-07 06:09:25 +0000
***************
*** 4847,4852 ****
--- 4847,4859 ----
buffered-ahead character if we have one. */
nread = read_process_output (proc, channel);
+
+ {
+ struct Lisp_Process *p = XPROCESS (proc);
+ if (p->pid == -2)
+ ;
+ }
+
if (nread > 0)
{
/* Since read_process_output can run a filter,
next prev parent reply other threads:[~2012-05-07 6:11 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-22 12:42 bug#10580: 24.0.92; gdb initialization takes more than one minute at 100% CPU Dov Grobgeld
2012-01-23 0:53 ` Glenn Morris
[not found] ` <CA++fsGG4YuTtb2VC9R+GRcPN5+JSaKpkb+uO3WAX0+VXmh8HDQ@mail.gmail.com>
2012-01-23 9:21 ` Glenn Morris
2012-01-25 0:37 ` Glenn Morris
2012-01-25 8:49 ` Dov Grobgeld
2012-01-25 9:39 ` Dov Grobgeld
2012-01-25 19:05 ` Glenn Morris
2012-04-30 5:33 ` Dov Grobgeld
2012-04-30 6:36 ` Dov Grobgeld
2012-05-06 4:13 ` Chong Yidong
2012-05-06 4:55 ` Dov Grobgeld
2012-05-06 5:39 ` Chong Yidong
2012-05-06 7:06 ` Dov Grobgeld
2012-05-07 2:53 ` Chong Yidong
2012-05-07 5:07 ` Dov Grobgeld
2012-05-07 6:11 ` Chong Yidong [this message]
2012-05-07 6:26 ` Chong Yidong
2012-05-08 5:33 ` Dov Grobgeld
2012-05-08 7:56 ` Dov Grobgeld
2012-05-08 8:28 ` Chong Yidong
2012-05-08 11:59 ` Dov Grobgeld
2012-05-08 16:25 ` Chong Yidong
2012-05-08 17:47 ` Eli Zaretskii
2012-05-08 21:07 ` Dov Grobgeld
2012-05-08 21:24 ` Andreas Schwab
2012-05-08 21:30 ` Dov Grobgeld
2012-05-09 7:47 ` Andreas Schwab
2012-05-09 8:44 ` Dov Grobgeld
2012-05-09 17:36 ` Eli Zaretskii
2012-05-10 6:00 ` Dov Grobgeld
2012-05-10 14:13 ` Chong Yidong
2012-05-10 19:07 ` Dov Grobgeld
2012-05-10 20:25 ` Stefan Monnier
2012-05-11 6:33 ` Chong Yidong
2012-05-11 8:29 ` Dov Grobgeld
2012-05-11 9:47 ` Eli Zaretskii
2012-05-11 13:27 ` Chong Yidong
2012-11-05 20:36 ` Dov Grobgeld
2012-11-05 20:46 ` Eli Zaretskii
2012-11-05 23:51 ` Stefan Monnier
2012-05-10 16:32 ` Eli Zaretskii
2012-05-10 18:43 ` Dov Grobgeld
2012-05-08 17:38 ` Eli Zaretskii
2012-12-14 4:14 ` bug#10580: 24.0.92; gdb initialization takes more than one minute at 100 Jean-Philippe Gravel
2012-12-18 4:45 ` Jean-Philippe Gravel
2012-12-21 4:01 ` Chong Yidong
2013-03-01 3:31 ` Jean-Philippe Gravel
2013-03-11 17:14 ` Stefan Monnier
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